Effect of foliar spray of boron and zinc on fruit quality of papaya (Carica papaya L.) cv. Red Lady in Chitwan, Nepal
Agriculture and Forestry University, Rampur, Chitwan, Nepal
International Journal of Horticulture, 2019, Vol. 9, No. 2 doi: 10.5376/ijh.2019.09.0002
Received: 10 Jan., 2019 Accepted: 23 May, 2019 Published: 10 Jun., 2019
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Preferred citation for this article:
Subedi A., Shrestha A.K., Tripathi K.M., and Shrestha B., 2019, Effect of foliar spray of boron and zinc on the fruit quality of papaya (Carica papaya L.) cv. Red Lady in Chitwan, Nepal, International Journal of Horticulture, 9(2): 10-14 (doi: 10.5376/ijh.2019.09.0002)
A field experiment was carried out at the commercial papaya farm, Chanauli, Chitwan, from January 2016 to December 2016 to find out the effect of foliar spray of boron and zinc on the quality of papaya (Carica papaya L.) cv. Red Lady. The experiment consisted of eleven treatments viz., "T1-Control (No spray), T2-Water Spray, T3-Borax at 0.1 % and ZnSO4 at 0.1 %, T4-Borax at 0.1 % and ZnSO4 at 0.2 %, T5-Borax at 0.1 % and ZnSO4 at 0.3 %, T6-Borax at 0.2 % and ZnSO4 at 0.1 %, T7-Borax at 0.2 % and ZnSO4 at 0.2 %, T8-Borax at 0.2 % and ZnSO4 at 0.3 %, T9-Borax at 0.3 % and ZnSO4 at 0.1 %, T10-Borax at 0.3 % and ZnSO4 at 0.2 % and T11-Borax at 0.3 % and ZnSO4 at 0.3 %." Post-harvest analysis of the harvested fruits was done at the post-harvest laboratory of Agriculture and Forestry University, Rampur, Chitwan. Significantly the highest values were observed for the quality parameters like ascorbic acid content (4.67 mg/100 g pulp), TSS (11.68 °Brix), PH of fruit juice (5.53), TSS/TA ratio (101.63), and fruit firmness (2.73 Kg/cm2) with the application of borax at 0.3 % and ZnSO4 at 0.2 %. Similarly, the lowest values for titratable acidity (0.115 %) and physiological loss in weight during 3 days (1.60 %), 5 days (2.00 %), 7 days (3.05 %), and 9 days (4.75 %) after storage at room temperature were found in the same treatment.
Boron; Zinc; Papaya; Quality; Foliar Spray; Red Lady
International Journal of Horticulture
• Volume 9