Studies on different grades and times of application of micro nutrient mixture on growth yield and quality of custard apple (annona squamosa L.) cv. Balanagar
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Date
2018-05-30
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Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
The experimentation entitled, “Studies on different grades and times of application of micronutrient mixture on growth yield and quality of Custard apple (Annona squamosa L.) Cv. Balanagar” was carried out on thefield of Custard apple Research Station, Ambejogai, Dist.-Beed, during mrig bahar in 2017-18. The experiment was laid out in factorial randomized block design with two factors i.e. factor A- micronutrient mixture grade (G) and factor B- time of application (T). These factors consist of four and three levels respectively, twelve treatment combinations with three replications.
The experiment was conducted on nine years old custard apple plants of Balanagar cultivar. The micronutrient mixtures i.e. Grade-1 sulphate by soil application, Grade-2 chelate by soil application, Grade-3 sulphate by foliar application and Grade-4 chelate by foliar application were applied monthly, bimonthly and tri monthly time variation.
Among the different treatment combination the treatment G4T1 (Grade-4 chelated by foliar application monthly) noted the highest vegetative growth, reproductive growth and yield in respect to, plant height (52.25 cm), plant spread east-west (50.08 cm) and north-south (49.68 cm), stem girth (6.47 cm), plant volume (13.23 m3),days required for flowering (150.17 days), days required for fruit set (10.67 days), days required for fruit maturity (101.00 days), number of flowers/m3 (24.67), number of fruits/m3 (20.33), fruit set (82.47 %), weight of fruit (222.61g), number of fruit per tree (68.33), yield/tree (14.75 kg), marketable yield per tree (10.31 kg), yield/ha (5.90 tonnes).The physico-chemical parameters also recorded maximum in respect to length of fruit (8.50 cm), breadth of fruit (8.50 cm), number of seeds/fruit (38.67), weight of seeds (24.58 g), weight of pulp (89.22 g), weight of peel (109.13 g), pulp (40.08%), peel (49.01 %), pulp to peel ratio (0.82), TSS (24.13 %), ascorbic acid ( 22.43 %), reducing sugar of fruit (13.55%), non-reducing sugar (3.08%) and total reducing sugar (16.63%) with reduction in acidity (0.35%).
In this experiment the treatment G4T1 (Grade-4 chelated by foliar application monthly) also performed well in respect of growth and yield which showed results viz. reduction in days required for flowering (150.17 days) and fruit set (10.67 days and number of flowers per m3 (24.67).
Therefore, amongst all the treatment combinations Grade-4 chelate by foliar monthly application can be considered as most beneficial in terms of growth, yield and quality.
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