Melon Research Papers - Academia.edu (original) (raw)
It is known that, currently sugar is obtained from sugar beets or sugar cane. The need for sugar in our republic is more than 500 thousand tons per year, this includes both consumption by the private sector and industrial consumption. The... more
It is known that, currently sugar is obtained from sugar beets or sugar cane. The need for sugar in our republic is more than 500 thousand tons per year, this includes both consumption by the private sector and industrial consumption. The lion's share of this amount is imported from Russia, Ukraine, Kazakhstan, and others. There are no own sugar factories in Uzbekistan, with the exception of Khorezm, which refuses cane yellow sugar coming from Iran [1].
The research aims to 1) know the response of plant growth and yield of melon by fertilizing it with NPK fertilizer, and to know the optimal dose of NPK fertilizer, 2) know the response of plant growth and yield of melon by fertilizing it... more
The research aims to 1) know the response of plant growth and yield of melon by fertilizing it with NPK fertilizer, and to know the optimal dose of NPK fertilizer, 2) know the response of plant growth and yield of melon by fertilizing it with biofertilizers, and 3) know the response of plant growth and yield of melon on the various combinations of NPK and biofertilizers. The research is conducted in Screen House, Cilengko Farm, Pandak, Baturraden on May 2015 through August 2015. The field experimental design used is Randomized Block Design (RBD) factorial with three replications. Factors that tested in the research are as follows NPK: N0: control, N1: 50 g/plant, N2: 100 g/plant, and biofertilizers: O0: control, O1: 10 ml/plant, O2: 15ml/plant. Data are analyzed by F test, if is significantly different, it will be continued by DMRT (Duncan’s Multiple Range Test) at the error rate 5%. The results show that 1) dose of NPK fertilizer 50 g/plants show a better response to the variable length of the plant, sum of leaves and greenish levels, 2) treatment of multiple doses of biofertilizers does not show any response to the variables of research at all, and 3) the combination of NPK and biofertilizers does not show any response to the variables of research and melon crops.
A field experiment comprising five different supporting systems viz., T = vertical support system 1 by bamboo branches, T = vertical support system by rope wire, T = horizontal support system by bamboo 23 macha (trellis), T = horizontal... more
A field experiment comprising five different supporting systems viz., T = vertical support system 1 by bamboo branches, T = vertical support system by rope wire, T = horizontal support system by bamboo 23 macha (trellis), T = horizontal support system by bamboo branches just lying over ground, T = control 45 (without support) was conducted at the Hill Agricultural Research Station, Raikhali, Chandraghona, Rangamati Hill District during 2012 and 2013 to find out the proper supporting system for the growth and yield of honeydew melon (chinal) in hill valley of Chittagong Hill Tracts. The number of node at 1 male (8.63) st and female flowers (17.95) were higher in control. The maximum number of fruits (9.08) was found in T that was 3
Melon shelling machine was designed, constructed and evaluated. Shelling efficiency and cleaning efficiency were evaluated for on the machine. The design adopted the method of shelling by attrition. The major machine elements of the... more
Melon shelling machine was designed, constructed and evaluated. Shelling efficiency and cleaning efficiency were evaluated for on the machine. The design adopted the method of shelling by attrition. The major machine elements of the shelling machine are the hopper, shelling chamber and the separating chamber. The hopper is made up of welded galvanized sheet slanted at 23⁰ which is the coefficient of static friction of melon on galvanized sheet. The shelling chamber has an impeller which consists of two circular disks with 24 vanes positions in between the disks. The vanes are inclined at an angle of 45⁰ to the horizontal axis. The minimum power required for the impeller was calculated to be 598.2W and the terminal velocity was calculated to be 7.6 m/s. Evaluation was carried out for the machine shelling efficiency and cleaning efficiency using three levels of moisture content (3.79% d.b., 6.61% d.b. and 9.53% d.b.) and three levels of impeller speeds (800, 1000, and 1200 rpm). The results showed that the moisture content had a significant effect (at P<0.05) on the shelling efficiency and cleaning efficiency. However, the impeller speed has a significant effect only on shelling efficiency. The optimal values of the shelling efficiency and cleaning efficiency were 39.1% and 70.3% respectively with machine loss of 4.5% at 3.79% d.b. and 1200 rpm
The study traces the development of the notion of luxury in religious discourse and the literature of ideas from the late sixteenth to the mid-eighteenth century. The topic is considered against a background of general movements in... more
The study traces the development of the notion of luxury in religious discourse and the literature of ideas from the late sixteenth to the mid-eighteenth century. The topic is considered against a background of general movements in post-Renaissance thought (examining in particular the influence of Augustinianism on both clerical and lay moral discourse) and is linked to the social, political and economic factors that significantly affected attitudes to luxury.
La quitina es el segundo biopolímero más abundante en la naturaleza después de la celulosa y puede ser ob-tenida por diversas técnicas. Este trabajo propone la extracción de quitina a partir de desechos agroindustriales y la producción de... more
La quitina es el segundo biopolímero más abundante en la naturaleza después de la celulosa y puede ser ob-tenida por diversas técnicas. Este trabajo propone la extracción de quitina a partir de desechos agroindustriales y la producción de quitosano como bioestimulante de semillas de melón (Cucumis melo L). La quitina fue ais-lada del exoesqueleto de camarón (Litopenaeus schmitti) por el proceso biotecnológico de fermentación ácido láctica (FAL) en biorreactores estacionarios, usando las bacterias endémicas del cefalotórax del camarón y los Lactobacillus sp. de lactosuero. La optimización de los parámetros de FAL se analizó por análisis de varianza con la metodología de superfi cie de respuesta, usando como variable de repuesta el porcentaje de desproteinización. La quitina fue purifi cada y desacetilada (NaOH 45 %) para obtener quitosano, el cual se evaluó por FTIR y TGA. Se determinó la solubilidad del quitosano (>98 %), grado de desacetilación (90 %) y peso molecular (157,68 kg.mol-1). Semillas de melón se trataron con una solución de quitosano, en dos concentraciones, 0,75 y 1 % (p/v), Q1 y Q2 respectivamente, evaluando 4 tratamientos en semillas (control T0, desinfección T1, desinfección + escarifi cación T2 y escarifi cación T3) y se comparó el efecto del quitosano con un producto comercial. Los resul-tados de porcentaje de germinación para los tratamientos de Q1 y producto comercial fueron 100,00 y 47,21 %; el índice de germinabilidad fue de 1 día y 2,7 días, respectivamente. Los tratamientos T0 y T3 mostraron mejores resultados con el uso de suelo local como sustrato.
RESUMEN En México, el melón es una hortaliza importante, ya que es el tercer producto agrícola en captación de divisas por exportación, además de que es generadora de empleos. Las aplicaciones agrícolas de la quitina y de sus derivados... more
RESUMEN
En México, el melón es una hortaliza importante, ya que es el tercer producto agrícola en captación de divisas por exportación, además de que es generadora de empleos. Las aplicaciones agrícolas de la quitina y de sus derivados está en las áreas siguientes: bioestimulación del crecimiento vegetal;
protección de la planta contra hongos, bacterias y virus; y protección favorable en poscosecha.
El presente trabajo se realizó en el Centro de Investigación en Química Aplicada, en el cultivo de melón híbrido Cruiser F1, se realizaron dos experimentos: Experimento 1. Efecto del quitosán en la semilla de melón influye en el crecimiento en plántula bajo condiciones de invernadero con diferentes concentraciones en ppm: 1250 Q, 1000 Q, 750 Q, 500 Q, 250 Q y Testigo. Se uso un diseño de bloques al azar con 6 tratamientos y 4 repeticiones. Las variables evaluadas fueron peso seco de raíz, tallo, hoja y planta. El quitosán de 250 Q originó los mayores valores de peso seco por planta lo que indica que el
quitosán tiene un efecto positivo en la inducción del crecimiento, pero después de que ha pasado el estado óptimo de trasplante. En el Experimento 2 se estudió el efecto del quitosán como promotor de crecimiento y rendimiento,
además se examinó la aplicación de diferentes concentraciones de quitosán con fungicidas en diferentes dosis para controlar el mildiu de las cucurbitáceas (Pseudoperonospora cubensis Berk & Curt) en melón, bajo condiciones de campo abierto. Los tratamientos fueron fungicidas más quitosán en porcentajes
de 100% Quitosán (100Q), 100% Fungicida (F), 75F25Q, 50Q50F y Testigo. Se uso un diseño de bloques al azar con 5 tratamientos y 4 repeticiones. El quitosán indujo el crecimiento del área foliar, el peso seco de tallo, de hoja y de planta obteniéndose los mayores valores con el tratamiento 50F50Q, parece ser que a concentraciones por arriba o por debajo de la indicada de quitosán no tienen un efecto positivo. El tratamiento de quitosán 100Q presentó el mayor rendimiento por planta respecto al resto de los tratamientos.
En este trabajo se encontró que, no fue posible el control de mildiu de las cucurbitáceas mediante la aplicación de quitosán de peso molecular alto a las concentraciones estudiadas.
Melon has undergone an intense process of selection and crossbreeding, resulting in many landraces distributed all over Europe, Africa and Asia. Due to this huge variability, the systematic position of this taxon has been reviewed many... more
Melon has undergone an intense process of selection and crossbreeding, resulting in many landraces distributed all over Europe, Africa and Asia. Due to this huge variability, the systematic position of this taxon has been reviewed many times in the last two decades. The goal of this article is to compare the phenotypic characterization achieved by seed features with the molecular analysis on melon genotypes. A set of 124 accessions of Cucumis melo has been selected for molecular and morpho-colourimetric analyses plus an additional selection of accessions of Cucumis sativus, Citrullus lanatus and Citrullus colocynthis used to highlight seed morphology distances among genus and species. Genotyping was performed on the basis of 211 polymorphic SNPs and was executed using the iPLEX® Gold MassARRAY Sequenom technology. A total of 137 parameters were specifically designed to evaluate seed colour, size, shape and texture. Both molecular and seed morpho-colourimetrical analyses confirm the existence of two melon subspecies while an intermediate group has also been found. A non random allelic distribution in SNPs located in specific genomic regions suggests that some of these regions may account for a part of the observed variation in seed size. Six major groups of varieties can be discriminated on the basis on seed traits.
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were... more
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were planted, tagged at anthesis, and harvested at two maturity stages: 21 and 28 d after anthesis (DAA). Harvested fruit were stored at 5 or 13 °C for up to 3 weeks and various quality parameters including color, firmness, titratable acidity (TA), total soluble solids (TSS), weight loss, chilling injury (CI), ethylene production, protein content, glucose content, fructose content, sucrose content, and maltose content were assessed during storage. After 3 weeks of storage at 13 °C, early-harvested fruit (21 DAA) had relatively similar color values (L*, lightness; a*, green–red tones; b*, blue–yellow tones) and TA compared with late-harvested fruit (28 DAA); however, some quality traits, such as TSS, were not similar. Ethylene content decreased initially af...
Effects of chitosan, calcium chloride, and their combination on preventing quality and safety deterioration of postharvest fresh-cut honeydew melon at 7 C were investigated. Treatments of all these three delayed weight loss, improved... more
Effects of chitosan, calcium chloride, and their combination on preventing quality and safety deterioration
of postharvest fresh-cut honeydew melon at 7 C were investigated. Treatments of all these three
delayed weight loss, improved firmness, delayed colour changes and moderately inhibited microbial
growth. Interestingly, combined treatment of chitosan and calcium chloride was the most effective,
leading to 40% less weight loss, 45% (3.70 N) increase in firmness, less overall colour difference, and more
than 0.5 log CFU/g inhibition on mesophilic and psychrotropic growths on day 13 of storage as compared
to control group. In addition, these treatments also inhibited degradation of pectin chains. Nanostructural
analysis of fruit pectin via atomic force microscopy (AFM) indicated that firmness was closely
related to the nanostructure of sodium carbonate-soluble pectin (SSP). Short and narrow SSP chains were
observed more in samples with less firmness. We conclude that edible coating of chitosan combined
with calcium chloride treatment synergistically extends the shelf-life of fresh-cut honeydew melon by
maintaining the integrity of SSP via interactions between SSP and calcium ions or protonated chitosan
groups.
Melons are grown in Israel in ‘walk-through’ tunnel greenhouses. We compared honey bee (Apis mellifera) foraging activity and melon nectar characteristics in well-ventilated and in closed greenhouses. Foraging activity in the open... more
Melons are grown in Israel in ‘walk-through’
tunnel greenhouses. We compared honey bee
(Apis mellifera) foraging activity and melon nectar
characteristics in well-ventilated and in
closed greenhouses. Foraging activity in the
open greenhouses was two- to five-fold greater
than that in the closed greenhouses. This higher
activity could be explained by higher flower
attractivity due to a higher nectar sugar concentration
both in hermaphroditic flowers and
male flowers. The higher sugar concentration
in the open, ventilated greenhouses was probably
as a result of the relatively lower humidity
there. The greater foraging activity in the open
greenhouses also may have been due to lower
air temperatures and better accessibility for the
bees. It seems that greenhouse ventilation can
improve honey bee pollination activity in melon
and probably other greenhouse crops as well.
- by Arnon Dag
- •
- Pollination, Melon
Heterosis is the superiority of an F1 hybrid over its parents. Since this phenomenon is still unclear in melon, a half diallel experiment based on eight genetically distant breeding lines was conducted in six environments of Central... more
Heterosis is the superiority of an F1 hybrid over its parents. Since this phenomenon is still unclear in melon, a half diallel experiment based on eight genetically distant breeding lines was conducted in six environments of Central Italy, assessing commercially important traits: yield, total soluble solids (TSS), and days to ripening (DTR). To estimate the additive (general combining ability; GCA) and the non-additive gene effects (specific combining ability; SCA), yield was analyzed by Griffing’s methods two and four, and the results were compared to the GGE (Genotype plus Genotype by Environment interaction) biplot methodology; TSS and earliness were evaluated only by Griffing’s method four. Overall, GCAs were significantly more relevant than SCAs for all examined traits. Least square means (LsM), mid-parent heterosis (MPH), best-parent heterosis (BPH), as well as Euclidean and Mahalanobis’ distances were calculated and compared with the genetic distance (GD). As a few correlatio...
Two field experiments were conducted in two successive spring-summer seasons at the Newe Ya'ar Research Center (northern Israel) to examine source-sink relationships in ‘Noy Amid’, a Casaba-type melon. The source and sink were... more
Two field experiments were conducted in two successive spring-summer seasons at the Newe Ya'ar Research Center (northern Israel) to examine source-sink relationships in ‘Noy Amid’, a Casaba-type melon. The source and sink were artificially manipulated by removing leaves and fruit shortly after fruit-set. Highest fruit yield and fruit quality were obtained in control plants and any reduction in source size (by leaf removal) resulted in yield decline. In ‘Noy Amid’ melon, plants with 4-8 leaves could not support more than one fruit and all other young fruits aborted. The weight of mature fruits was reduced with decreasing source size (leaf number). The sink size (number of young fruits) at the beginning of treatment application had a significant effect on assimilate production and translocation to the fruits. Plants with 2 young fruits as compared to a single fruit, and with 4 young fruits as compared to 2 fruits produced larger mature fruits with the same number of leaves. These ...
- by Haim Nerson
- •
- Horticulture, Biology, Melon
Thirty-six (36) cantaloupe melon fruits were used for the weight loss and firmness level trial. Eighteen (18) fruits were coated with Natralife TM coating while the 18 of the fruits were not coated and were used as control fruits. Six... more
Thirty-six (36) cantaloupe melon fruits were used for the weight loss and firmness level trial. Eighteen (18) fruits were coated with Natralife TM coating while the 18 of the fruits were not coated and were used as control fruits. Six fruits each of coated and uncoated fruits were stored in a cold store at 2°C, another six fruits each of coated and uncoated were stored at 9°C cold storage, while the other six fruits each of the coated and uncoated fruit were kept in shelf life room of 20°C and a relative humidity of 85-90% for 30 days. The coating of melons with Natralife TM coatings was by hand brushing with sponge and allowed for 30-45 minutes to dry under natural ventilation before been stored at the various storage conditions. In regard to weight loss Melon fruits coated with Natralife TM coating had a signficant effect at 0.05% on weight loss stored at cold storage of 2°C and 9°C and shelf life room of 20°C and had reduced weight loss compared to uncoated control melons. Cantal...
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were... more
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were planted, tagged at anthesis, and harvested at two maturity stages: 21 and 28 d after anthesis (DAA). Harvested fruit were stored at 5 or 13 °C for up to 3 weeks and various quality parameters including color, firmness, titratable acidity (TA), total soluble solids (TSS), weight loss, chilling injury (CI), ethylene production, protein content, glucose content, fructose content, sucrose content, and maltose content were assessed during storage. After 3 weeks of storage at 13 °C, early-harvested fruit (21 DAA) had relatively similar color values (L*, lightness; a*, green–red tones; b*, blue–yellow tones) and TA compared with late-harvested fruit (28 DAA); however, some quality traits, such as TSS, were not similar. Ethylene content decreased initially af...
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were... more
Dudaim melon (Cucumis melo Group Dudaim) is a unique edible melon for which few postharvest physiology studies have been conducted. To investigate the postharvest behavior of dudaim melon, two cultivars (Zangi-Abad and Kermanshah) were planted, tagged at anthesis, and harvested at two maturity stages: 21 and 28 d after anthesis (DAA). Harvested fruit were stored at 5 or 13 °C for up to 3 weeks and various quality parameters including color, firmness, titratable acidity (TA), total soluble solids (TSS), weight loss, chilling injury (CI), ethylene production, protein content, glucose content, fructose content, sucrose content, and maltose content were assessed during storage. After 3 weeks of storage at 13 °C, early-harvested fruit (21 DAA) had relatively similar color values (L*, lightness; a*, green-red tones; b*, blue-yellow tones) and TA compared with late-harvested fruit (28 DAA); however, some quality traits, such as TSS, were not similar. Ethylene content decreased initially after harvest and then started to increase during storage at 13 °C. For most treatments, glucose and fructose contents decreased whereas sucrose and maltose contents increased with advancing maturity. Increased ethylene production, in concert with color development at 13 °C, similar to ripe fruit, and the changing balance of measured mono-and disaccharide sugars in harvested fruit likely indicates 'Kermanshah' is climacteric. Results for 'Zangi-Abad' were not as definitive. Dudaim melon fruit can be harvested at an optimum stage of maturity, similar to known climacteric melon fruit, and then allowed to ripen at proper storage temperatures before consumption. Based on the results of this study, we recommend that harvest at 21 DAA and storage at a nonchilling temperature such as 13 °C are the optimal stage and temperature for long storage purposes.
- by mohsen hatami and +1
- •
- Postharvest Horticulture, Melon, Dudaim
Nine genotypes of melon (Cucumis melo L.) were selected for the investigation of regeneration. Most of the tested varieties showed regeneration ability on medium containing 0.5 mg l⁻¹ or 1 mg l⁻¹ BA, but following the appearance of shoot... more
Nine genotypes of melon (Cucumis melo L.) were selected for the investigation of regeneration. Most of the tested varieties showed regeneration ability on medium containing 0.5 mg l⁻¹ or 1 mg l⁻¹ BA, but following the appearance of shoot buds, only six varieties produced leafy shoots. The effect of combinations of BA with different auxins (IAA, NA, 2,4-D) and ABA in the culture medium on shoot regeneration was tested on cotyledon explants of 'Hógolyó' and 'Hale's Best'. To establish optimal conditions for the adventitious shoot induction six types of seedling-derived explants were prepared from seedlings of four different ages. The best results for shoot forming capacity were achieved with cotyledons followed by decapitated seedlings and hypocotyls derived from 4-day-old seedlings. Cotyledon segments of 'Hógolyó' and 'Hale's Best' were also cultivated on media with different concentrations of IAA and BA supplemented with 0.26 mg l⁻¹ ABA. The highest number of well-formed plantlets was counted for 'Hógolyó' on the medium supplemented with 0.9 mg l⁻¹ BA+ 0.6 mg l⁻¹ IAA+ 0.26 mg l⁻¹ ABA. This is the first report on the in vitro regeneration of 'Hógolyó' from decapitated seedling and hypocotyl explants and of 'JavÍtott Zentai', 'Muskotály', 'Hógolyó', 'Tétényi csereshéjú' and 'Magyar Kincs' from cotyledon explants.
Manual depodding of melon pods for the purpose of extracting the edible seeds is a time consuming and tedious operation. A melon depodding machine was therefore designed, fabricated and evaluated for performance. The major components of... more
Manual depodding of melon pods for the purpose of extracting the edible seeds is a time consuming and tedious operation. A melon depodding machine was therefore designed, fabricated and evaluated for performance. The major components of the machine are the frame, hopper, depodding chamber and discharge outlet. The machine is powered by a 1.5 kW, 1420 rpm single-phase electric motor. All materials used for fabricating the components were sourced locally. The performance characteristics of the machine, including Depodding Efficiency, Material Discharge Efficiency (product of Seed Discharge Efficiency and Pulp Discharge Efficiency) and Overall Efficiency, were evaluated at six operating speeds (200 rpm, 250 rpm, 300 rpm, 350 rpm, 367 rpm and 400 rpm) and one clearance setting (10 mm) between the spiked-screw conveyor and the cylinder wall. The Depodding Efficiency varies between 31.8 % and 62.1% while Seed Discharge Efficiency varies between 29.7 % and 74.4%. The Pulp Discharge Efficie...
- by Leo Agbetoye
- •
- Nigeria, Development, Key words, Melon
Fertilizer application may promote significant changes in soil reaction and on the availability of important nutrients for plants. The utilization of rock biofertilizers is a practical process that reduces energy consumption and increases... more
Fertilizer application may promote significant changes in soil reaction and on the availability of important nutrients for plants. The utilization of rock biofertilizers is a practical process that reduces energy consumption and increases nutrient availability in soils. In a field experiment, the effect of biofertilizers produced with phosphate and potash rocks plus Acidithiobacillus inoculation were evaluated on the chemical attributes of an Argisoil from the São Francisco Valley, Pernambuco State, Brazil, after melon cultivation. The experiment was arranged in a factorial 32+2 scheme in randomized block design, with four replicates. Two sources of P biofertilizer (PB) and K biofertilizer (KB) were applied in the same doses recommended for simple superphosphate (SS) and potassium chloride (KCl), and in doses which corresponded to two and three times the recommended ones. Additional treatments were carried out (soluble fertilizers (SS) and potassium chloride KCl), applied in the recommended dose, and control treatment with no addition of P and K (P0+K0)). Biofertilizers reduced soil pH and higher available P and K values were obtained when higher doses of biofertilizers (PB and KB) were applied. Mg content increased when KB biofertilizers were applied in higher rates, probably due to the solubilization of Mg present in the biotite. The rock biofertilizers with Acidithiobacillus may be recommended as an alternative to soluble fertilizers by the residual effect in nutrient availability, especially in sodic soils or in limed acid soils.
The aim of the study was to research different irrigation levels affect on forages water melon yield and some plant characteristics at Research Site of Agricultural Faculty of Selcuk University, Konya – Turkey in 2010. Forages water melon... more
The aim of the study was to research different irrigation levels affect on forages water melon yield and some plant characteristics at Research Site of Agricultural Faculty of Selcuk University, Konya – Turkey in 2010. Forages water melon cultivar of ‘Citrullus lanatus var. citroides’ obtaining from Merv and Tecen provinces of Turkmenistan was used. In each irrigation event, same amount of irrigation water was applied to plots by different irrigation intervals of 5 (S1), 10 (S2) and 15 (S3) days. Total applied water for S1, S2 and S3 treatments were about 398.4 mm, 199.2 mm and 132.8 mm, respectively. The result showed that the highest fruit yield was found as 6.6 t/ha from the greatest water applied plot of S1. Thus, S1 treatment would be more advantageous if the farmer’s goal is to maximize fruit yield, but if the goal is to put more area into production under limited water supply or minimizing irrigation cost S3 treatment can be recommended since the highest irrigation water use ...
- by Mithat Direk
- •
- Geography, Agronomy, Irrigation, Melon
In the challenge of fossil fuel substitution, lignocellulosic biomass is considered the feedstock of the future, due to its economic and environmental advantages in comparison with bioethanol from starch or sugar. However, physical and... more
In the challenge of fossil fuel substitution, lignocellulosic biomass is considered the feedstock of the future, due to its economic and environmental advantages in comparison with bioethanol from starch or sugar. However, physical and chemical barriers caused by the close association of the main components of lignocellulosic biomass hinder the hydrolysis of cellulose and hemicellulose to fermentable sugars. For this reason, biomass must be pretreated to expose the cellulose of the vegetable fibers. These processes intend to eliminate lignin and hemicellulose, decrease cellulose crystallinity and increase the porosity of lignocellulosic materials. Melon is one of the main horticultural crops of San Juan Province, Argentina. From its industrialization, hundreds of tons of melon husk are discarded, generating environmental problems. Since this material has potential as second generation biofuel feedstock, a study for the enhancement of sugars bioavailability for ethanol production is proposed. An acid pretreatment with sulfuric acid, followed by enzymatic hydrolysis and fermentation was applied. The most influential variables were determined and the optimal route to use this residue as energy source is proposed.Fil: Montoro, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Ingeniería Química; ArgentinaFil: Mamaní, Arminda Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Ingeniería Química; ArgentinaFil: Herrero, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Ingeniería Química; ArgentinaFil: Sardella, Maria Fabiana. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Deiana, Ana Cristina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Ingeniería Química; Argentin
- by Laura Montoro
- •
- BIOETHANOL, Melon, Acid, Pretreatment
Debido a que no existe información sobre el efecto de la poda y la densidad de siembra sobre el cultivo de melón en invernadero en Costa Rica, se planteó el siguiente estudio con el objetivo de evaluar el efecto de tres densidades de... more
Debido a que no existe información sobre el efecto de la poda y la densidad de siembra sobre el cultivo de melón en invernadero en Costa Rica, se planteó el siguiente estudio con el objetivo de evaluar el efecto de tres densidades de siembra (1,9; 3,2 y 3,9 plantas/m2) y tres tipos de poda (un tallo secundario, dos tallos secundarios y plantas sin poda) sobre el rendimiento y la calidad del melón Cantaloupe Torreón F-1. El cultivo se manejó con fertirrigación, en sustrato de fibra de coco. No se presentaron diferencias significativas entre tratamientos para los días a inicio de la cosecha ni para la relación pulpa:cavidad. Se registraron diferencias significativas entre tratamientos, tanto para el rendimiento como para el porcentaje de sólidos solubles totales. El mayor rendimiento correspondió a las plantas sin poda con una densidad de siembra de 3,9 plantas/m2, que obtuvo 2,76 y 2,62 kg m-2 de rendimiento total y comercial, respectivamente. En cuanto a sólidos solubles totales, a ...
... Ensayo de cultivares de melón. Autores: Pedro Hoyos Echevarría, Sotero Molina Vivaracho, Ruth Pérez Rodríguez, Diana Ramos Ramos, Patricia Robles Mañas, Alicia Rodríguez Castro, Patricia Tena Paniagua; Localización ...
- by antonio martínez
- •
- Horticulture, Biology, Melon
Penggunaan media tumbuh dan volume air yang tepat menentukan pertumbuhan dan hasil tanaman melon. Penelitian ini bertujuan untuk mengetahui volume air optimum pada media tumbuh tertentu yang dapat menghasilkan pertumbuhan dan hasil yang... more
Penggunaan media tumbuh dan volume air yang tepat menentukan pertumbuhan dan hasil tanaman melon. Penelitian ini bertujuan untuk mengetahui volume air optimum pada media tumbuh tertentu yang dapat menghasilkan pertumbuhan dan hasil yang optimum. Penelitian menggunakan rancangan split plot 4 x 3, dengan tiga ulangan. Petak utama yaitu volume irigasi tetes dengan empat taraf; 600 ml hari-1 tan-1 , 1200 ml hari-1 tan-1 , 1800 ml hari-1 tan-1 dan 2400 ml hari-1 tan-1 sedangakan anakan petak yaitu media tumbuh dengan tiga taraf; tanah + arang sekam, tanah + cocopeat, serta tanah + bokhasi. Parameter yang diamati yaitu tinggi tanaman, jumlah daun, total panjang akar tanaman, luas daun, kandungan air nisbi daun, prolin, lebar bukaan stomata, kerapatan stomata, kadar klorofil, umur berbunga, bobot tanaman basah, bobot tanaman kering, bobot buah, lingkaran buah, brix buah, kadar air buah melon, dan kandungan NPK jaringan daun melon. Hasil penelitian menunjukkan volume air 600 ml hari-1 tan-1 optimum dengan media tumbuh tanah + bokhasi pada bobot tanaman segar (1083.33 g) sedangkan volume air 1200 ml hari-1 tan-1 dengan media tumbuh tanah + bokhasi memberikan pengaruh terhadap bobot tanaman kering (95.80 g). Jenis media tumbuh memiliki kapasitas volume air yang berbeda untuk pertumbuhan dan hasil tanaman yang optimal.
- by Didi Carsidi
- •
- Agronomy, Horticulture, Melon, Irigasi
Fertilizer application may promote significant changes in soil reaction and on the availability of important nutrients for plants. The utilization of rock biofertilizers is a practical process that reduces energy consumption and increases... more
Fertilizer application may promote significant changes in soil reaction and on the availability of important nutrients for plants. The utilization of rock biofertilizers is a practical process that reduces energy consumption and increases nutrient availability in soils. In a field experiment, the effect of biofertilizers produced with phosphate and potash rocks plus Acidithiobacillus inoculation were evaluated on the chemical attributes of an Argisoil from the São Francisco Valley, Pernambuco State, Brazil, after melon cultivation. The experiment was arranged in a factorial 32+2 scheme in randomized block design, with four replicates. Two sources of P biofertilizer (PB) and K biofertilizer (KB) were applied in the same doses recommended for simple superphosphate (SS) and potassium chloride (KCl), and in doses which corresponded to two and three times the recommended ones. Additional treatments were carried out (soluble fertilizers (SS) and potassium chloride KCl), applied in the recommended dose, and control treatment with no addition of P and K (P0+K0)). Biofertilizers reduced soil pH and higher available P and K values were obtained when higher doses of biofertilizers (PB and KB) were applied. Mg content increased when KB biofertilizers were applied in higher rates, probably due to the solubilization of Mg present in the biotite. The rock biofertilizers with Acidithiobacillus may be recommended as an alternative to soluble fertilizers by the residual effect in nutrient availability, especially in sodic soils or in limed acid soils.
The effect of malic acid and essential oils (EOs) of cinnamon, palmarosa and lemongrass and their main active compounds as natural antimicrobial substances incorporated into an alginate-based edible coating on the shelf-life and safety of... more
The effect of malic acid and essential oils (EOs) of cinnamon, palmarosa and lemongrass and their main active compounds as natural antimicrobial substances incorporated into an alginate-based edible coating on the shelf-life and safety of fresh-cut “Piel de Sapo” melon (Cucumis melo L.) was investigated. Melon pieces (50 g) were coated with alginate-based edible coating containing malic acid (EC) and EOs