Vol. 6, Issue 6 (2018)
Effect of chemicals & bagging along with chemical attributes of rainy season guava (Psidium guajava Linn.) cv. Lucknow-49
Author(s): Nitesh Kumar Sharma, Sanjay Pathak, Ravi Pratap Singh, Anshuman Singh, Mritunjay Rai, AP Singh and Anand Singh
Abstract: The study was started from June 2017 to assess the “Effect of chemicals & baggingalong with cemical attributes of rainy season guava (Psidium guajava linn.) cv. lucknow-49†at the Main Experiment Station and Post Harvest Technology Laboratory of Horticulture, Narendra Deva University of Agriculture and Technology, Faizabad (U.P.). The fruits of rainy season or Ambe bahar guava crop are very poor in quality, having poor shelf life and numbers of fruits are infested with insect pests and diseases particularly fruit flies and anthracnose respectively. These problems occur due to prevalence of warm and humid condition in rainy season. To overcome these problems, the present investigation was formulated with nine pre-harvest treatments viz. T1 (CaCl2 @ 2%), T2 (salicylic acid @ 3%), T3 (polythene + CaCl2 @ 2%), T4 (polythene + salicylic acid @ 3%), T5 (blue polythene + CaCl2 @ 2%), T6 (blue polythene + salicylic acid @ 3%), T7 (violet polythene + CaCl2 @ 2%), T8 (violet polythene + salicylic acid @ 3%)and T9 (Control). The treated fruits were harvested at ripe stage and stored at ambient condition. The result revealed that all pre harvest treatments found superior than control and the pre harvest treatment ofpolythene + salicylic acid@ 3 % proved the most efficient in improving fruit size and weight(length 5.37 cm and width 5.23 cm), weight (133 g), and treatment violet polythene + CaCl2 @ 2% improve the bio-chemical quality, TSS (12.68 %), acidity (0.48 mg/100g), TSS: acid ratio (30.19 %), ascorbic acid (164.67 mg/100g), reducing sugar (5.20%), non reducing sugar (4.46%), total sugar (9.66%). violet polythene + salicylic acid, @ 3% proved the best in producing fruits having minimum spots (0.82%) and very less infestation along with more fruit firmness increased (9.51 kg/cm2). Application of violet polythene + CaCl2 @ 2%followed by violet polythene + salicylic acid @ 3% give a better quality and economics return therefore, this pre-harvest treatment may be the option of crop regulation of guava crop.
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How to cite this article:
Nitesh Kumar Sharma, Sanjay Pathak, Ravi Pratap Singh, Anshuman Singh, Mritunjay Rai, AP Singh, Anand Singh. Effect of chemicals & bagging along with chemical attributes of rainy season guava (Psidium guajava Linn.) cv. Lucknow-49. Int J Chem Stud 2018;6(6):2687-2690.
