Claudia F Nicola - Academia.edu (original) (raw)
Papers by Claudia F Nicola
Annals of "Valahia" University of Târgovişte, Oct 1, 2016
The aim of the study is to try a systematic and rational exploration of regeneration potential of... more The aim of the study is to try a systematic and rational exploration of regeneration potential of extinct taxons, starting from old seeds found in the soil or in the herbarium, to study their germination potential with the purpose of biodiversity conservation. The species involved in this study are: Achillea spinosa, Chenopodium wolfii. Several protocols for the in vitro propagation of the species, starting from the seed are described in this study. The presence of callus during micropropagation of plants has also been the object of research for different compositions of nutritive medium.
Schimbări Bioclinice Datorate Influenţei Virusului PDV Asupra Unor Soiuri De Prun Şi Cele Datorate Virusului Aclsv Asupra Unor Soiuri De Măr Biochemical Changes Following the Influence of PDV Virus in Some Varieties of Plum and of Aclsv Virus in Some Varieties of Apple
Acta horticulturae, Mar 1, 2013
In fruit growing, an important problem is the process of the annual supply with chemical fertiliz... more In fruit growing, an important problem is the process of the annual supply with chemical fertilizers, which overestimated may lead to water and soil pollution. Before 1990's the manure use every 3-4 years, at a rate of 40-50 t/ha, especially on heavy soils, was a method for nitrogen fixation and its progressive release to plants. By application of black charcoal into the orchard soil, we aimed to ensure nitrogen fixation and its progressive release to the plants, as a replacement for manure use. The researches regarding application of the black charcoal were conducted at the Research Institute for Fruit Growing Pitesti Romania, in a 5 years old high density apple orchard. The experience type is a bifactorial one, 2 x 4: A factor-the application depth with the graduations a1-0-0.2 m; a2-0-0.4 m; B factor the charcoal dose: with the graduations b1-untreated control treatment-without black charcoal use, b2-black charcoal 1 kg m-2 ; b3-black charcoal 5 kg m-2 and b4-black charcoal 10 kg m-2. In the third year after the black charcoal application, the fruits yield increase ranged between 11.0-49.7% depending on the dose of charcoal compared to the untreated control. An increase in total nitrogen content of the soil was registered two years after black charcoal application compared with untreated control and according to the rate and incorporation depth. The phenomenon should be explained by the fact that the organic nitrogen was adsorbed inside and on charcoal particles and after three years the phenomena of desorbtion began, and the accumulated nitrogen was released to the plants.
The purpose of this research was to study the behaviour of two new Romanian thorn blackberry cult... more The purpose of this research was to study the behaviour of two new Romanian thorn blackberry cultivars DAR 24 and DAR 8 in process of micropropagation, compared with Darrow cultivar usually commercially micropropagated in our laboratory. Due to several drawbacks of the conventional propagation of Rubus, the efficiency of micropropagation was tested in order to obtain high quality planting material and to introduce rapidly these new cultivars in a certification program. Thorn blackberry cultivars DAR 8 and DAR 24 with resistance to winter colds was successfully micropropagated. Blackberry plants were found without virus infection after biological and ELISA tests. Axillary buds from the branches in full growth were used as the initial explants. After four weeks of growth, aseptic cultures was established on MS basal mineral salts, LS vitamins with 0.3 mg/l BAP, 0.1mg/l GA 3 and 0.001mg/l NAA. The rate of successfully established cultures was on average 65.11%. Good proliferation of the regenerated shoots was obtained on the same medium composition used for initiation phase, whereas medium MS with mineral salts reduced to ½ and LS vitamins with 0.1 mg/l IBA and 0.1 mg/l GA 3 was used in the rooting phase. Dar 24 and Dar 8 cultivars responded by good rates of micropropagation on medium culture B as compared to control Darrow cultivar, even if the obtained shoots length was lower than on medium A. The statistical analysis reveled that the highest MR (20.66 plantlets/explant) was obtained for Dar 24. In this case the length of shoots was 1.92 cm. The highest rooting percentages (over 85%) were obtained with shoots multiplied on medium B. High quality of rooted plants induced a high percentage of acclimatization of cultivar Dar 8, 86.36% under mist system in green house whereas the percentage of acclimatization of cultivar Dar 24 was lower, 51.85%.
Fruit Growing Research, Dec 22, 2022
The berries are rich in polyphenols, vitamins, and other bioactive compounds, and exhibit antioxi... more The berries are rich in polyphenols, vitamins, and other bioactive compounds, and exhibit antioxidant, antimicrobial, anti-inflammatory and anticancer activities. In this work, antioxidant activity (AA) and a phenolic profile of berries fruits belonging to the Aronia melanocarpa (Michx.) Elliott, ʹMelromʹ cv., Lonicera caerulea var. kamtschatica, ʹKamiʹ cv., and Sambucus nigra L., ʹElromʹ cv. were studied. All three cvs. were previously patented by the Research Institute for Fruit Growing Pitesti, Romania. Alcoholic extracts from berries were obtained by four methods: continuous, maceration, ultrasounds and microwaves-assisted. The antioxidant content of extracts was evaluated by an HPLC method. AA was determined by DPPH free radical scavenging method. Total phenol, flavonoid, and anthocyanin contents were determined by spectrophotometric methods. The AA values were reported as equivalents (µg mL-1 extract) caffeic and gallic acids, morin, quercetin, rutin, and are in concordance with the results of the chromatographic method. In addition, the chromatographic method allowed identifying the pcoumaric acid, caffeic acid, chlorogenic acid, rutin, and epicatechin. The experimental results have shown that analyzed fruit extracts have high antioxidant activity, due mainly to flavonoids and anthocyanins in high concentration. Therefore, extracts from mentioned berries can be used in different nutraceutical products with high antioxidant potential.
Horticulturae
Raspberry is a delicious fruit with important nutritional and health properties for consumers. Th... more Raspberry is a delicious fruit with important nutritional and health properties for consumers. The efficiency of achieving raspberry breeding aims such as productivity, fruit quality, and adequate response to stressors, etc., depends directly on knowledge of the inheritance of traits and genetic factors of influence and their pragmatic use. In this study, the main morphological characteristics and chemical components of fruits of 24 raspberry genotypes were studied in a comparative field trial; 14 were promising selections and the other 10 included their parental forms (Autumn Bliss, Glen Moy, Glen Prosen, Opal, Pathfinder, Titan, Tulameen, Veten, Willamette) and Glen Ample cultivar, which was used as control. The results highlighted significant differences and a large variation among the genotypes (between 2.40 and 4.90 g for fruit weight, 0.19–0.47 kg/cane for yield, 50–106 for drupelets/fruit, 10.0–12.7% for dry matter, 0.23–2.00% pectin, 1.61–2.72% glucose, etc.). The inheritanc...
Fruit Growing Research, 2021
This study shows the influence of compost fertilization derived from sludge obtained from wastewa... more This study shows the influence of compost fertilization derived from sludge obtained from wastewater treatment on the nutrition of an eight-year-old apple orchard, ʹJonathanʹ cv. A field experiment was conducted to demonstrate the beneficial and negative aspects of (urban) sludge compost fertilization in apples and to assess the risk of soil contamination with heavy metals from municipal sewage sludge compost. The experimental factor was the compost with the following gradations: V1 = 0 t/ha, V2 = 20 t/ha, V3 = 40 t/ha, V4 = 60 t/ha, V5 = 80 t/ha. After two years (2019-2021) from soil fertilization with compost, the nitrogen content of the leaves increased in the treatment with the maximum fertilization dose (80 t/ha) by 30% compared to the unfertilized control, while the phosphorus content of leaves increased by 80% compared to non-fertilization control. The potassium content of the leaves increased by 36% in the 80 t/ha treatment compared to the unfertilized control, but still rem...
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008
SUMMARY The glucides results of the photosyntesis process a nd therefore, the basis for the synte... more SUMMARY The glucides results of the photosyntesis process a nd therefore, the basis for the syntesis of the most organic substances in the plants. The data rep orted so far (1) showed that the most of the total glucides produced by photosynthesis is used by the vegetative growths (about 45%). Following the studies carried out by Paul-Bădescu in 1993 regarding the glucides dynamics over the year before the leaves fall, the sugar percentage is increased in t he tissues because of the running of the carbohydra tes from leaves to the stocking points (branch, trunck or root tissues). It is a trifactorial experiment: A factor‐represents the age of branches studied, with graduations:a1-annual shoots, a2-biannual shoots; B factor‐represents the treatment applied with grad uations:b1-control, b2-Nutrinaft (A+B+C), gradually applied, one per physiological stage, b3- Nutrinaft (A+B+C)+soil fertilizers (the soil fertilizers are applied each time with the foliar a pplications), b4-soil fertilize...
Erwerbs-Obstbau, 2017
The paper deals with the spatial distribution of root density in highbush blueberry plantations o... more The paper deals with the spatial distribution of root density in highbush blueberry plantations of various ages for a proper planting distance recommendation and a better irrigation and fertilization management. The environmental conditions consist of sandy-loamy soils and a continental temperate climate. Two highbush blueberry cultivars were studied, 'Bluecrop' and 'Blueray'. Root density (RD) and density of root cross-sectional area (RCSA) were investigated for various root diameters. It was found that the prevalent type of roots in highbush blueberry crops is the hair type, with root diameters less than 0.1 mm. Both RD and RCSA decreased with distance from plant and with soil depth; the 38-year-old crop showed a more developed root system versus the 8-year-old crop. In both cases the roots did not grow more than 0.6 m laterally and more than 0.7 m deep. According to these results, the planting distances in highbush blueberry could be reduced to substantially increase the number of plants/ha and fruit yield. Irrigation application should be carried out to wet a proper soil volume, about 0.6-0.7 m deep for older crops, and about 0.5 m deep for younger crops.
FRUIT GROWING RESEARCH, 2018
The present paper show the results of the quality study of some recently introduced cherry fruits... more The present paper show the results of the quality study of some recently introduced cherry fruits varieties as regard the fruit biometric indicators (weight, diameter, color, firmness, pH) and biochemical (dry mater content % Brix, malic acid, citric acid, tartaric acid) at two years from planting. 'Vanda', 'Heartford', 'Areko', 'Penny', 'Karina', 'Kordia', 'Folfer' varieties were grafted on the Gi 5 rootstock. The plantation was established in 2016 at the Research Institute for Fruit Growing Pitesti.
The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry Cultivars
Bulletin UASVM …, 2010
... The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry C... more ... The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry Cultivars Mihai IANCU, Irina ANCU, Silvia NICOLAE, Claudia NICOLA ... J. American. Soc. Hort. SCI.118:337-382. 4. Iancu, M., I. Ancu and P. Mladin (2010). ...
II. Tehnologii Pomicole Durabile - Protecţia Mediului Fruit Sustainable Technologies - Environment Protection Compozitia Chimic Ă Esential Ă a Frunzelor Si Fructelor De Afin Crescut Pe Trei Substraturi De Plantare the Essential Chemical Composition of Leaves and Fruits to Highbush Blueberry Growt...
Fruit Growing Research, Dec 22, 2022
Different fertilization systems cause changes in the content of mobile forms of Al (aluminum) in ... more Different fertilization systems cause changes in the content of mobile forms of Al (aluminum) in the soil, due to changes in pH. The toxicity Al is one of the major limitations that inhibits the growth and development of plants in acidic soils. In acidic soils (pH <5.0), phytotoxic aluminum (Al 3+) rapidly inhibits root growth and subsequently affects the absorption of water and nutrients by plants. Stationary fertilization experiments with wastewater sludge compost treatments to blueberry plants were evaluated. In the spring of 2020, an experiment with increasing doses of compost of 0, 20, 40, 60, 80 t /ha in vegetation pots, under soil water controlled conditions, was organized. Three years after compost fertilization, a 4.2 pH level (strong acid) was experimentally induced in the soil of all vegetation vessels planted with blueberries. The content of phytotoxic forms of aluminum increased with increasing dose of compost, compared to unfertilized control. At the induction of the soil pH of 4.2, in the variant fertilized with the maximum dose of compost (80 t/ha) the mobile and phytotoxic content of Al increased 30 times compared to the same experimental variant from the pre-acidification conditions. In the same time, under the newly created conditions, the mobile phosphorus content in the soil decreased dramatically. In the compost maximum fertilization dose, the mobile phosphorus content from the soil was significantly lower than the unfertilized control.
Acta Horticulturae, 2016
The aim of this study was to evaluate the influence of the planting substrates on the basic chemi... more The aim of this study was to evaluate the influence of the planting substrates on the basic chemical fruit composition of six blueberry cultivars: 'Brigita Blue', 'Bluetta', 'Bluecrop', 'Sunrise', 'Blueray', and 'Safir'. Research has been conducted at the experimental field of the Research Institute for Fruit Growing Pitesti, in the period of 2010-2012. On average, 'Safir' fruits had the highest content of L-ascorbic acid on three planting substrates tested in all years of study. The average values of dry matter, total acidity and ash showed no significant differences between the planting substrates and cultivars. The mean values of reducing sugars, tannin substances and potassium contents on the b3 planting substrate (50% acid peat + 25% sawdust + 20% native soil + 40 g powder sulphur) were significantly higher for 12.23% compared to the average values obtained on b2 planting substrate (70% sawdust + 25% native soil) and for 12.42% higher than the values obtained using b1 planting substrate (50% peat + 25% manure + 25% native soil + 60 g powder sulphur).
FRUIT GROWING RESEARCH, 2018
Since 1995, the genetic improvement of strawberry (Fragaria x ananassa Duch.), in Romania, was de... more Since 1995, the genetic improvement of strawberry (Fragaria x ananassa Duch.), in Romania, was developed mainly at RIFG Pitesti, within The Small Fruits Laboratory, which accumulated an experience in the field of more than 35 years (the first hybrids were obtained in 1978). As in the past, the classic selection scheme was followed. The choice of the parents was based on the productivity, quality and diseases tolerance of some Romanian and foreign varieties studied over a long period of time. The hybridizations were done in the field in individual bags and the selection of the obtained hybrids was carried out according to the known phases: the vegetative propagation of the selected plants, the organization of contest trial (linear) and contest microcultures (randomized) with number of plants and replicates specific to strawberry culture. The evaluated hybrids with a high percentage of selected plants in the hybrid fields were: `Queen Elisa x Mira`, `Queen Elisa x Marmolada x (Addie x Dana)`, `Queen Elisa x Real`, `Mira x Real` and `Mira x Queen Elisa`. The paper presents the behavior of eight strawberry selections and three parental varieties in field conditions during 2015-2017. The characteristics studied are: plant yield (g/plant), average fruit weight (g), firmness (N), shape, color, chemical content and tolerance to diseases. As a result of the researches carried out on `08-19-9` (`Queen Elisa x Real`), it was registered at ISTIS Bucharest in 2016 for promotion as a new variety in 2019. Cuvinte cheie: Fragaria x ananassa Dutch., productivitate, caracteristici de calitate, toleranța la boli
Priochem 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
International Agrophysics, 2013
During three years a deficit irrigation experiment was performed on peach response under the semi... more During three years a deficit irrigation experiment was performed on peach response under the semi-arid conditions of south-eastern Romania. Three sprinkler-irrigated treatments were investigated: fully irrigated, deficit irrigation treatment, and non-irrigated control treatment. Soil water content ranged between 60 and 76% of the plant available soil water capacity in fully irrigated, between 40 and 62% in deficit irrigation treatment, and between 30 and 45% in control. There were significant differences in fruit yield between the treatments. Irrigation water use efficiency was maximum in deficit irrigation treatment. Fruit yield correlated significantly with irrigation application. Total dry matter content, total solids content and titrable acidity of fruit were significantly different in the irrigated treatments vs. the control. Significant correlation coefficients were found between some fruit chemical components. For the possible future global warming conditions, when water use ...
During three years a deficit irrigation experiment was performed on peach response under the semi... more During three years a deficit irrigation experiment was performed on peach response under the semi-arid conditions of southeastern Romania. Three sprinkler-irrigated treatments were investigated: fully irrigated, deficit irrigation treatment, and non-irrigated control treatment. Soil water content ranged between 60 and 76% of the plant available soil water capacity in fully irrigated, between 40 and 62% in deficit irrigation treatment, and between 30 and 45% in control. There were significant differences in fruit yield between the treatments. Irrigation water use efficiency was maximum in deficit irrigation treatment. Fruit yield correlated significantly with irrigation application. Total dry matter content, total solids content and titrable acidity of fruit were significantly different in the irrigated treatments vs. the control. Significant correlation coefficients were found between some fruit chemical components. For the possible future global warming conditions, when water use becomes increasingly restrictive, deficit irrigation will be a reasonable solution for water conservation in regions with similar soil and climate conditions.
Annals of "Valahia" University of Târgovişte, Oct 1, 2016
The aim of the study is to try a systematic and rational exploration of regeneration potential of... more The aim of the study is to try a systematic and rational exploration of regeneration potential of extinct taxons, starting from old seeds found in the soil or in the herbarium, to study their germination potential with the purpose of biodiversity conservation. The species involved in this study are: Achillea spinosa, Chenopodium wolfii. Several protocols for the in vitro propagation of the species, starting from the seed are described in this study. The presence of callus during micropropagation of plants has also been the object of research for different compositions of nutritive medium.
Schimbări Bioclinice Datorate Influenţei Virusului PDV Asupra Unor Soiuri De Prun Şi Cele Datorate Virusului Aclsv Asupra Unor Soiuri De Măr Biochemical Changes Following the Influence of PDV Virus in Some Varieties of Plum and of Aclsv Virus in Some Varieties of Apple
Acta horticulturae, Mar 1, 2013
In fruit growing, an important problem is the process of the annual supply with chemical fertiliz... more In fruit growing, an important problem is the process of the annual supply with chemical fertilizers, which overestimated may lead to water and soil pollution. Before 1990's the manure use every 3-4 years, at a rate of 40-50 t/ha, especially on heavy soils, was a method for nitrogen fixation and its progressive release to plants. By application of black charcoal into the orchard soil, we aimed to ensure nitrogen fixation and its progressive release to the plants, as a replacement for manure use. The researches regarding application of the black charcoal were conducted at the Research Institute for Fruit Growing Pitesti Romania, in a 5 years old high density apple orchard. The experience type is a bifactorial one, 2 x 4: A factor-the application depth with the graduations a1-0-0.2 m; a2-0-0.4 m; B factor the charcoal dose: with the graduations b1-untreated control treatment-without black charcoal use, b2-black charcoal 1 kg m-2 ; b3-black charcoal 5 kg m-2 and b4-black charcoal 10 kg m-2. In the third year after the black charcoal application, the fruits yield increase ranged between 11.0-49.7% depending on the dose of charcoal compared to the untreated control. An increase in total nitrogen content of the soil was registered two years after black charcoal application compared with untreated control and according to the rate and incorporation depth. The phenomenon should be explained by the fact that the organic nitrogen was adsorbed inside and on charcoal particles and after three years the phenomena of desorbtion began, and the accumulated nitrogen was released to the plants.
The purpose of this research was to study the behaviour of two new Romanian thorn blackberry cult... more The purpose of this research was to study the behaviour of two new Romanian thorn blackberry cultivars DAR 24 and DAR 8 in process of micropropagation, compared with Darrow cultivar usually commercially micropropagated in our laboratory. Due to several drawbacks of the conventional propagation of Rubus, the efficiency of micropropagation was tested in order to obtain high quality planting material and to introduce rapidly these new cultivars in a certification program. Thorn blackberry cultivars DAR 8 and DAR 24 with resistance to winter colds was successfully micropropagated. Blackberry plants were found without virus infection after biological and ELISA tests. Axillary buds from the branches in full growth were used as the initial explants. After four weeks of growth, aseptic cultures was established on MS basal mineral salts, LS vitamins with 0.3 mg/l BAP, 0.1mg/l GA 3 and 0.001mg/l NAA. The rate of successfully established cultures was on average 65.11%. Good proliferation of the regenerated shoots was obtained on the same medium composition used for initiation phase, whereas medium MS with mineral salts reduced to ½ and LS vitamins with 0.1 mg/l IBA and 0.1 mg/l GA 3 was used in the rooting phase. Dar 24 and Dar 8 cultivars responded by good rates of micropropagation on medium culture B as compared to control Darrow cultivar, even if the obtained shoots length was lower than on medium A. The statistical analysis reveled that the highest MR (20.66 plantlets/explant) was obtained for Dar 24. In this case the length of shoots was 1.92 cm. The highest rooting percentages (over 85%) were obtained with shoots multiplied on medium B. High quality of rooted plants induced a high percentage of acclimatization of cultivar Dar 8, 86.36% under mist system in green house whereas the percentage of acclimatization of cultivar Dar 24 was lower, 51.85%.
Fruit Growing Research, Dec 22, 2022
The berries are rich in polyphenols, vitamins, and other bioactive compounds, and exhibit antioxi... more The berries are rich in polyphenols, vitamins, and other bioactive compounds, and exhibit antioxidant, antimicrobial, anti-inflammatory and anticancer activities. In this work, antioxidant activity (AA) and a phenolic profile of berries fruits belonging to the Aronia melanocarpa (Michx.) Elliott, ʹMelromʹ cv., Lonicera caerulea var. kamtschatica, ʹKamiʹ cv., and Sambucus nigra L., ʹElromʹ cv. were studied. All three cvs. were previously patented by the Research Institute for Fruit Growing Pitesti, Romania. Alcoholic extracts from berries were obtained by four methods: continuous, maceration, ultrasounds and microwaves-assisted. The antioxidant content of extracts was evaluated by an HPLC method. AA was determined by DPPH free radical scavenging method. Total phenol, flavonoid, and anthocyanin contents were determined by spectrophotometric methods. The AA values were reported as equivalents (µg mL-1 extract) caffeic and gallic acids, morin, quercetin, rutin, and are in concordance with the results of the chromatographic method. In addition, the chromatographic method allowed identifying the pcoumaric acid, caffeic acid, chlorogenic acid, rutin, and epicatechin. The experimental results have shown that analyzed fruit extracts have high antioxidant activity, due mainly to flavonoids and anthocyanins in high concentration. Therefore, extracts from mentioned berries can be used in different nutraceutical products with high antioxidant potential.
Horticulturae
Raspberry is a delicious fruit with important nutritional and health properties for consumers. Th... more Raspberry is a delicious fruit with important nutritional and health properties for consumers. The efficiency of achieving raspberry breeding aims such as productivity, fruit quality, and adequate response to stressors, etc., depends directly on knowledge of the inheritance of traits and genetic factors of influence and their pragmatic use. In this study, the main morphological characteristics and chemical components of fruits of 24 raspberry genotypes were studied in a comparative field trial; 14 were promising selections and the other 10 included their parental forms (Autumn Bliss, Glen Moy, Glen Prosen, Opal, Pathfinder, Titan, Tulameen, Veten, Willamette) and Glen Ample cultivar, which was used as control. The results highlighted significant differences and a large variation among the genotypes (between 2.40 and 4.90 g for fruit weight, 0.19–0.47 kg/cane for yield, 50–106 for drupelets/fruit, 10.0–12.7% for dry matter, 0.23–2.00% pectin, 1.61–2.72% glucose, etc.). The inheritanc...
Fruit Growing Research, 2021
This study shows the influence of compost fertilization derived from sludge obtained from wastewa... more This study shows the influence of compost fertilization derived from sludge obtained from wastewater treatment on the nutrition of an eight-year-old apple orchard, ʹJonathanʹ cv. A field experiment was conducted to demonstrate the beneficial and negative aspects of (urban) sludge compost fertilization in apples and to assess the risk of soil contamination with heavy metals from municipal sewage sludge compost. The experimental factor was the compost with the following gradations: V1 = 0 t/ha, V2 = 20 t/ha, V3 = 40 t/ha, V4 = 60 t/ha, V5 = 80 t/ha. After two years (2019-2021) from soil fertilization with compost, the nitrogen content of the leaves increased in the treatment with the maximum fertilization dose (80 t/ha) by 30% compared to the unfertilized control, while the phosphorus content of leaves increased by 80% compared to non-fertilization control. The potassium content of the leaves increased by 36% in the 80 t/ha treatment compared to the unfertilized control, but still rem...
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008
SUMMARY The glucides results of the photosyntesis process a nd therefore, the basis for the synte... more SUMMARY The glucides results of the photosyntesis process a nd therefore, the basis for the syntesis of the most organic substances in the plants. The data rep orted so far (1) showed that the most of the total glucides produced by photosynthesis is used by the vegetative growths (about 45%). Following the studies carried out by Paul-Bădescu in 1993 regarding the glucides dynamics over the year before the leaves fall, the sugar percentage is increased in t he tissues because of the running of the carbohydra tes from leaves to the stocking points (branch, trunck or root tissues). It is a trifactorial experiment: A factor‐represents the age of branches studied, with graduations:a1-annual shoots, a2-biannual shoots; B factor‐represents the treatment applied with grad uations:b1-control, b2-Nutrinaft (A+B+C), gradually applied, one per physiological stage, b3- Nutrinaft (A+B+C)+soil fertilizers (the soil fertilizers are applied each time with the foliar a pplications), b4-soil fertilize...
Erwerbs-Obstbau, 2017
The paper deals with the spatial distribution of root density in highbush blueberry plantations o... more The paper deals with the spatial distribution of root density in highbush blueberry plantations of various ages for a proper planting distance recommendation and a better irrigation and fertilization management. The environmental conditions consist of sandy-loamy soils and a continental temperate climate. Two highbush blueberry cultivars were studied, 'Bluecrop' and 'Blueray'. Root density (RD) and density of root cross-sectional area (RCSA) were investigated for various root diameters. It was found that the prevalent type of roots in highbush blueberry crops is the hair type, with root diameters less than 0.1 mm. Both RD and RCSA decreased with distance from plant and with soil depth; the 38-year-old crop showed a more developed root system versus the 8-year-old crop. In both cases the roots did not grow more than 0.6 m laterally and more than 0.7 m deep. According to these results, the planting distances in highbush blueberry could be reduced to substantially increase the number of plants/ha and fruit yield. Irrigation application should be carried out to wet a proper soil volume, about 0.6-0.7 m deep for older crops, and about 0.5 m deep for younger crops.
FRUIT GROWING RESEARCH, 2018
The present paper show the results of the quality study of some recently introduced cherry fruits... more The present paper show the results of the quality study of some recently introduced cherry fruits varieties as regard the fruit biometric indicators (weight, diameter, color, firmness, pH) and biochemical (dry mater content % Brix, malic acid, citric acid, tartaric acid) at two years from planting. 'Vanda', 'Heartford', 'Areko', 'Penny', 'Karina', 'Kordia', 'Folfer' varieties were grafted on the Gi 5 rootstock. The plantation was established in 2016 at the Research Institute for Fruit Growing Pitesti.
The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry Cultivars
Bulletin UASVM …, 2010
... The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry C... more ... The Influence of Planting Substrate on the Fruit Quality Characteristics of Seven Blueberry Cultivars Mihai IANCU, Irina ANCU, Silvia NICOLAE, Claudia NICOLA ... J. American. Soc. Hort. SCI.118:337-382. 4. Iancu, M., I. Ancu and P. Mladin (2010). ...
II. Tehnologii Pomicole Durabile - Protecţia Mediului Fruit Sustainable Technologies - Environment Protection Compozitia Chimic Ă Esential Ă a Frunzelor Si Fructelor De Afin Crescut Pe Trei Substraturi De Plantare the Essential Chemical Composition of Leaves and Fruits to Highbush Blueberry Growt...
Fruit Growing Research, Dec 22, 2022
Different fertilization systems cause changes in the content of mobile forms of Al (aluminum) in ... more Different fertilization systems cause changes in the content of mobile forms of Al (aluminum) in the soil, due to changes in pH. The toxicity Al is one of the major limitations that inhibits the growth and development of plants in acidic soils. In acidic soils (pH <5.0), phytotoxic aluminum (Al 3+) rapidly inhibits root growth and subsequently affects the absorption of water and nutrients by plants. Stationary fertilization experiments with wastewater sludge compost treatments to blueberry plants were evaluated. In the spring of 2020, an experiment with increasing doses of compost of 0, 20, 40, 60, 80 t /ha in vegetation pots, under soil water controlled conditions, was organized. Three years after compost fertilization, a 4.2 pH level (strong acid) was experimentally induced in the soil of all vegetation vessels planted with blueberries. The content of phytotoxic forms of aluminum increased with increasing dose of compost, compared to unfertilized control. At the induction of the soil pH of 4.2, in the variant fertilized with the maximum dose of compost (80 t/ha) the mobile and phytotoxic content of Al increased 30 times compared to the same experimental variant from the pre-acidification conditions. In the same time, under the newly created conditions, the mobile phosphorus content in the soil decreased dramatically. In the compost maximum fertilization dose, the mobile phosphorus content from the soil was significantly lower than the unfertilized control.
Acta Horticulturae, 2016
The aim of this study was to evaluate the influence of the planting substrates on the basic chemi... more The aim of this study was to evaluate the influence of the planting substrates on the basic chemical fruit composition of six blueberry cultivars: 'Brigita Blue', 'Bluetta', 'Bluecrop', 'Sunrise', 'Blueray', and 'Safir'. Research has been conducted at the experimental field of the Research Institute for Fruit Growing Pitesti, in the period of 2010-2012. On average, 'Safir' fruits had the highest content of L-ascorbic acid on three planting substrates tested in all years of study. The average values of dry matter, total acidity and ash showed no significant differences between the planting substrates and cultivars. The mean values of reducing sugars, tannin substances and potassium contents on the b3 planting substrate (50% acid peat + 25% sawdust + 20% native soil + 40 g powder sulphur) were significantly higher for 12.23% compared to the average values obtained on b2 planting substrate (70% sawdust + 25% native soil) and for 12.42% higher than the values obtained using b1 planting substrate (50% peat + 25% manure + 25% native soil + 60 g powder sulphur).
FRUIT GROWING RESEARCH, 2018
Since 1995, the genetic improvement of strawberry (Fragaria x ananassa Duch.), in Romania, was de... more Since 1995, the genetic improvement of strawberry (Fragaria x ananassa Duch.), in Romania, was developed mainly at RIFG Pitesti, within The Small Fruits Laboratory, which accumulated an experience in the field of more than 35 years (the first hybrids were obtained in 1978). As in the past, the classic selection scheme was followed. The choice of the parents was based on the productivity, quality and diseases tolerance of some Romanian and foreign varieties studied over a long period of time. The hybridizations were done in the field in individual bags and the selection of the obtained hybrids was carried out according to the known phases: the vegetative propagation of the selected plants, the organization of contest trial (linear) and contest microcultures (randomized) with number of plants and replicates specific to strawberry culture. The evaluated hybrids with a high percentage of selected plants in the hybrid fields were: `Queen Elisa x Mira`, `Queen Elisa x Marmolada x (Addie x Dana)`, `Queen Elisa x Real`, `Mira x Real` and `Mira x Queen Elisa`. The paper presents the behavior of eight strawberry selections and three parental varieties in field conditions during 2015-2017. The characteristics studied are: plant yield (g/plant), average fruit weight (g), firmness (N), shape, color, chemical content and tolerance to diseases. As a result of the researches carried out on `08-19-9` (`Queen Elisa x Real`), it was registered at ISTIS Bucharest in 2016 for promotion as a new variety in 2019. Cuvinte cheie: Fragaria x ananassa Dutch., productivitate, caracteristici de calitate, toleranța la boli
Priochem 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
International Agrophysics, 2013
During three years a deficit irrigation experiment was performed on peach response under the semi... more During three years a deficit irrigation experiment was performed on peach response under the semi-arid conditions of south-eastern Romania. Three sprinkler-irrigated treatments were investigated: fully irrigated, deficit irrigation treatment, and non-irrigated control treatment. Soil water content ranged between 60 and 76% of the plant available soil water capacity in fully irrigated, between 40 and 62% in deficit irrigation treatment, and between 30 and 45% in control. There were significant differences in fruit yield between the treatments. Irrigation water use efficiency was maximum in deficit irrigation treatment. Fruit yield correlated significantly with irrigation application. Total dry matter content, total solids content and titrable acidity of fruit were significantly different in the irrigated treatments vs. the control. Significant correlation coefficients were found between some fruit chemical components. For the possible future global warming conditions, when water use ...
During three years a deficit irrigation experiment was performed on peach response under the semi... more During three years a deficit irrigation experiment was performed on peach response under the semi-arid conditions of southeastern Romania. Three sprinkler-irrigated treatments were investigated: fully irrigated, deficit irrigation treatment, and non-irrigated control treatment. Soil water content ranged between 60 and 76% of the plant available soil water capacity in fully irrigated, between 40 and 62% in deficit irrigation treatment, and between 30 and 45% in control. There were significant differences in fruit yield between the treatments. Irrigation water use efficiency was maximum in deficit irrigation treatment. Fruit yield correlated significantly with irrigation application. Total dry matter content, total solids content and titrable acidity of fruit were significantly different in the irrigated treatments vs. the control. Significant correlation coefficients were found between some fruit chemical components. For the possible future global warming conditions, when water use becomes increasingly restrictive, deficit irrigation will be a reasonable solution for water conservation in regions with similar soil and climate conditions.