Vol. 7, Issue 4 (2019)
Effect of different drip irrigation levels on quality parameters of coloured capsicum hybrids (Capsicum annuum var. grossum L.) under shade net
Author(s): B Kiruthiga, K Avil Kumar, K Sreenivasa Kumar and A Srinivas
Abstract: A field experiment was conducted at Horticultural farm, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad during rabi 2018-19. The experiment was laid out in a split plot design and the treatment comprises of four irrigation levels viz., drip irrigation at 0.4 Epan (I1), drip irrigation at 0.6 Epan (I2), drip irrigation at 0.8 Epan (I3), drip irrigation at 1.0 Epan (I4) as main treatments and three hybrids viz., Indra (green) (V1), Orobelle (yellow) (V2), Bomby (red) (V3) as sub treatments and replicated thrice. The recommended dose (RD) of nutrients were 100:80:60 N, P2O5 and K2O kg ha-1 and entire dose of 80 P2O5 ha-1 was applied as basal, N and K2O applied as fertigation in three days interval. The crop was transplanted at 45cm × 40 cm spacing in September inside a tape type green shade net with 50 per cent shade. The experimental soil was sandy loam in texture, slightly alkaline in reaction, non saline, low in available nitrogen, available potassium and organic carbon content. Irrigation scheduling was done based on daily evaporation data recorded from USWB class ‘A’ pan evaporimeter. The cumulative daily evaporation during crop growth period was 737.5 mm. Amount of water applied including special operations of 26 mm and effective rainfall during crop growth period were 245.3, 392.0, 546.5 and 698.5 mm and 58.6, 64.2, 74.6, 82.6 mm for 100, 80, 60 and 40 per cent irrigation treatments respectively out of 127.4 mm of rainfall as per water balance method. The water source for irrigation was from a bore well. The irrigation water used to the experiment was neutral and categorized under Class II (C2S1). Bed size was 7.6 m × 0.9 m and plants were transplanted in zig-zag manner. The interaction effect between drip irrigation levels and hybrids was not significant on quality characters. TSS (ºBrix), ascorbic acid (mg 100 g-1), Oleoresin (%), Capsanthin (EOA values) and Capsaicin (%) were recorded significantly higher with drip irrigation at 1.0 Epan. TSS, ascorbic acid and Oleoresin of capsicum were not significantly effected by different drip irrigation levels. Drip irrigation at 0.8 Epan recorded significantly higher capsanthin than 0.6 and 0.4 Epan and was on par with 1.0 Epan. Capsaisin recorded significantly higher with drip irrigation at 1.0 Epan than rest of the drip irrigation levels. Among hybrids, Bomby recorded significantly higher TSS, Oleoresin, Capsanthin and Capsaicin than other Orobelle and Indra. Orobelle recorded significantly higher ascorbic acid than other two hybrids.
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How to cite this article:
B Kiruthiga, K Avil Kumar, K Sreenivasa Kumar, A Srinivas. Effect of different drip irrigation levels on quality parameters of coloured capsicum hybrids (Capsicum annuum var. grossum L.) under shade net. Int J Chem Stud 2019;7(4):987-989.
