Influence of foliar application of gibberellic acid, calcium and boron on fruit drop, yield and quality attributes of aonla (Emblica officinalis) cv. NA 7 (original) (raw)
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Journal of Applied Horticulture
Investigations on the pre-harvest sprays of 1.0% calcium nitrate, 0.1% Topsin-M, 0.1% Bayleton and their combinations were conducted on aonla cv NA-6. The spray treatments were given only at 20 d and 10 d before harvest. Treatment of 1.0% calcium nitrate + 0.1% Topsin-M was the best followed by 1.0% calcium nitrate + 0.1% Bayleton and 1.0% calcium nitrate. This treatment had maximum effect on all the attributes of fruit quality namely increased levels of TSS (8.4%), total sugars (6.93%) and total phenol (13.3%) with low levels of losses in acidity (8.8%), ascorbic acid (22.32%) and reducing sugars (12.8%) along with prolonged shelf-life of fruits upto 20 days as compared to 10 days in control. Thus, this treatment doubled the shelf-life of aonla fruit in storage at ambient temperatures. + 0.1% Topsin-M and (6) 1.0% calcium nitrate + 0.1% Bayleton. These treatments were given to the fruited trees on 10 th and 20 th November 1998. The fruits were harvested at full maturity on 30 th November at the best physiological stage and size. Three kg randomly selected fruits for each treatment were packed in CFB boxes with paper cutting as packing material and stored at ambient temperature (18 ± 5 o C) from 30 th November till spoiled and all the treatments were replicated three times, keeping one box as one replicate. Three fruits per replicate were taken at random at 5 days intervals from each treatments for determination of total soluble solids (TSS), sugars, acidity, ascorbic acid (vitamin C) and total phenols. Total soluble solids were determined by using hand refractometer of 0-32 per cent range and expressed as per cent TSS of the fruit juice. Acidity was determined by titration with 0.1N NaOH and results were expressed as g citric acid per 100 g of fruit pulp. Ascorbic acid content was determined by titration against 2, 6-dichlorophenol indophenol dye and the results were expressed as mg ascorbic acid per 100 g of fruit pulp. Sugars were estimated by Fehling's Solution as described by Lane and Eynon (1943) and the total phenol in fruit pulp was estimated by the method of Swain and Hills (1959). The results were expressed as per cent sugars and per cent phenols in fruit pulp.
2018
The result showed that the application of higher concentration (10%) of NPK liquid fertilizer gave the better result in terms of length of fruit (32.50 mm), diameter of fruit (41.62 mm), T.S.S. (14.58 B), Vitamin-C content (565.68 mg/100gm of pulp) with minimum acidity percentage (1.98 %) and longest shelf life of aonla fruit. Among the different levels of micronutrients, application of micronutrients @ of 5% gave the better results in cash of length of fruit (31.46 mm) and diameter of fruit (40.09 mm), highest total soluble solid (13.57 B), highest Vitamin-C (mg/100g of pulp), i.e.563.37 mg, lowest acidity (2.08%) with maximum shelf life (5.25 days) which was at par with micronutrients application @ 7.5%. Among the combinations of liquid fertilizers and micronutrients, the combination effect of NPK3 (10%) & MN1 (5%) gave the better quality and long shelf life. From the foregoing discussion it can be concluded that higher concentration (10%) of NPK liquid fertilizer and Micronutrien...
Effect of Nutrients on Fruit Quality of Aonla (Emblica officinallis Gaertn.) cv. Chakaiya
The present investigation entitled “Effect of nutrients on fruit quality of Aonla (Emblica officinallis Gaertn.) cv. Chakaiya” was carried out at the Main Experiment Station, Horticulture, Narendra Deva University of Agriculture & Technology, Faizabad (U.P.) during the year 2012-2013. The experiment was conducted in Randomized Block Design with eight treatments and replicated in four times, considering one plant as a unit. The observations were recorded for quality of aonla fruits. The maximum Total soluble solids (TSS), Acidity, Ascorbic acid, Reducing sugars, Non-reducing sugars and Total sugars were recorded with foliar application of ZnSO4+ MgSO4 + CuSO4 (0.5 per cent each). More ever it can be concluded that combined application of ZnSO4+ MgSO4 + CuSO4 (0.5 per cent each) judged the best for produced better fruit quality and yield of aonla.
EFFECT OF GIBBERELLIC ACID ON FRUIT QUALITY OF KINNOW MANDARIN
Plant growth regulators play vital role in citrus fruits production. Kinnow mandarin (Citrus reticulata Blanco) is the major citrus fruit of Pakistan. Present study was planned to observe the effects of pre-harvest foliar spray of GA3 to improve the Kinnow mandarin fruit yield and quality. Foliar application of GA3 was made at pre-harvest stage in four different concentrations i.e., 25, 45, 65 and 85ppm. Experiment was laid out according to RCBD with five treatments (four GA3 concentrations and one control) with three replications. Fruits were harvested and observed based on physical and biochemical properties. The results revealed that GA3 application significantly improved the physical (peel color, fruit weight and juice weight) and biochemical properties (TSS, acidity, ascorbic acid, antioxidants, phenols, flavonoids and carotenoids) of Kinnow fruit. It was found that out of all the treatments GA3 @ 65ppm was the best regarding the physical parameters while application of GA3 @ 25ppm and 45ppm performed better on biochemical quality attributes of Kinnow mandarin. It is concluded that GA3 (25 or 45ppm) may be applied as foliar spray to improve the quality in Kinnow fruit.
Indian Journal Of Agricultural Research, 2022
Background: Mango is national fruit of India and it is suffering with many problems in cultivation among which fruit drop is major which leads to low production. So, the application of nutrients and plant growth regulators would be helpful to minimize fruit drop and to get better yield with quality fruits. The aim of the present study to study the effect of foliar feeding of nutrients and gibberellic acid on yield and quality of mango (Mangifera indica L.) fruits cv. Dashehari. Methods: This study was conducted at Horticulture Farm, Rajawala and in PG Laboratory of Doon (PG) College of Agriculture Science and Technology, Camp Road, Selaqui, Dehradun during the years 2017-2018 with the use of GA3 (100 ppm), Urea (1.5%) and Boron (0.2%) alone and in combinations, these all were compared with control treatment. Result: All the treatments used were found better to improve the yield and quality of fruit but the treatment combination of Boron (0.2%) + Urea (1.5%) + GA3 (100 ppm) was found...
Association of Gibberellic Acid (GA3) with Fruit Set and Fruit Drop of Sweet Orange
Journal of Biology Agriculture and Healthcare, 2014
To determine the association of Gibberellic acid with fruit set and fruit drop of sweet orange, a research study was conducted at Agricultural Research Institute Tarnab, Peshawar, Pakistan during the year 2012. Three different concentrations(10, 20 and 30ppm excluding control) of Gibberellic acid (GA 3 ) were applied as foliar spray at full bloom stage of three different sweet orange cultivars namely Blood Red, Musambi and Succari. Fruit set as well as fruit drop at different developmental stages of fruit were calculated. The results of the experiment revealed that 30 ppm GA 3 application significantly reduced the percent fruit drop, percent June drop and increased yield tree -1 . While fruit set branch -1 , pre harvest fruit drop and fruit weight was significantly affected by 10 ppm GA 3 application. It was concluded from the research study that the foliar application of 30 ppm GA 3 at blooming stage could be applied in order to improve fruit set, control fruit drop and to increase the yield of sweet orange.
Journal of Pharmacognosy and Phytochemistry, 2018
The present study was conducted with aim to assess the effect of plant growth regulators and micro-nutrients on physical and biochemical properties of aonla. The present investigation was carried out during two consecutive years (Y1=2015-16 & Y2=2016-17) and pooled analysis was also carried out. The physical and biochemical characters of fruit viz., specific gravity, fruit pulp weight, fruit juice content, fruit pulp stone ratio, acidity, TSS, ascorbic acid, reducing sugars, non-reducing sugars, total sugars and stone weight were significantly varied due to foliar spray of micronutrients and plant growth regulators during both the years and in pooled analysis. The maximum specific gravity, fruit pulp weight, fruit juice content, fruit pulp stone ratio, acidity, TSS, ascorbic acid, reducing sugars, non-reducing sugars, total sugars and stone weight were recorded in treatment of GA3 (50 ppm) + NAA (50 ppm) (T10) followed by spray of GA3 (25 ppm) + NAA (25 ppm) (T9) as compared with ot...
Open Agriculture, 2019
Poor uptake of nutrients not only deteriorates the quality but also the yield of horticultural crops. Among various macro and micronutrients, the role of K, Ca and B is very important. Therefore, balanced application and uptake of K and Ca and B can improve the quality and yield of mango trees. So, a field study was conducted with the hypothesis that combined application of K and Ca along with B would be effective to improve yield and quality of Mango cv. Summer Bahisht (SB) Chaunsa. There were two sources of Ca(CaCl2 and Ca(NO3)2) and three sources of K(KNO3, K2SO4 and K-Citrate) combined with boric acid (BA). All Ca and K sources were applied at the rate of 1% while BA was applied at 0.2%. As compared to control, a significant improvement in fruit set panicle-1 (35.7% and 50.0%), fruit retention (125% and 40%), shelf life (73.3% and 36.6%), total soluble solids (35.1% and 40.6%) and fruit yield (52.5% and 49.2%) in 2016 and 2017 respectively, confirmed the effectiveness of KNO3 (1...
2014
To determine the association of Gibberellic acid with fruit set and fruit drop of sweet orange, a research study was conducted at Agricultural Research Institute Tarnab, Peshawar, Pakistan during the year 2012. Three different concentrations(10, 20 and 30ppm excluding control) of Gibberellic acid (GA 3 ) were applied as foliar spray at full bloom stage of three different sweet orange cultivars namely Blood Red, Musambi and Succari. Fruit set as well as fruit drop at different developmental stages of fruit were calculated. The results of the experiment revealed that 30 ppm GA 3 application significantly reduced the percent fruit drop, percent June drop and increased yield tree -1 . While fruit set branch -1 , pre harvest fruit drop and fruit weight was significantly affected by 10 ppm GA 3 application. It was concluded from the research study that the foliar application of 30 ppm GA 3 at blooming stage could be applied in order to improve fruit set, control fruit drop and to increase the yield of sweet orange.
2020
Purpose: The effect of foliar application of gibberellic acid and boric acid on bioactive compounds and quality of pomegranate fruit cv. Shishe-Kab was investigated. Research Method: This was accomplished through the field and laboratory experiments at the Faculty of Agriculture, University of Birjand, Iran, during 2017 and 2018 seasons. Gibberellic acid (50 and 150 mg L-1) and Boric acid (200 and 600 mg L-1) were applied three times at one-month interval; late in May, June, and July during growth and developmental stages of fruits. The experiment was set in a completely randomized block design. Fruits were harvested at full maturity stage late in October, and physicochemical properties were evaluated. Findings: Results showed that anthocyanin content and antioxidant activity significantly decreased while fruit firmness, ascorbic acid content, and fruit cracking increased in gibberellic acid treatments. Application of 50 mg L-1 gibberellic acid significantly increased total soluble ...