EFFECT OF BIO-REGULATORS AND BORON ON GROWTH AND YIELD ATTRIBUTES OF CHILLI (Capsicum annuum L.)
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Date
2022-12-22
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College of Horticulture, Mudigere, Keladi Shivappa Nayaka Univeristy of Agricultural and Horticultural Sciences, Iruvakki, Shivamogga
Abstract
An investigation was carried out at Amble village of Chikkamagaluru taluk, during the year 2021-22. The main aim of this study was to find the effect of bio-regulators and boron on growth, yield and quality attributes of chilli. The study was conducted in RCBD design with nine treatments by adopting three replications. The treatments consist of T1: (Control), T2: (Triacontanol @ 0.25 %), T3: (Triacontanol @ 0.50%), T4: (Seaweed extract @ 0.25 %), T5: (Seaweed extract @ 0.50 %), T6: (Humic acid @ 0.25 %), T7: (Humic acid @ 0.50 %), T8: (Boron @ 0.10 %) and T9: (Boron @ 0.20 %). Among the various treatments, foliar application of T2: (Triacontanol @ 0.25 %) recorded significantly maximum plant height (72.05 cm), canopy spread (N-S and E-W) (62.23 and 56.23 cm, respectively), total number of primary branches (12.70), total number of secondary branches (19.44), total number of branches per plant (39.14), total number of leaves per plant (278.44), leaf area per plant (7570.86 cm2) and leaf area index (2.10). The foliar application of Ts: (Boron @ 0.10%) recorded significantly minimum days to 50 per cent flowering (41.65) and first fruit set (42.23). However, maximum number of flowers per plant (287.18), number of fruits per plant (205.00), percentage fruit set (71.38), fruit length (12.30 cm), fruit girth (14.78 mm), 100 fruits fresh weight (615.00 g), green chilli yield per plant (1.230 kg) and hectare (34.17 t/ha), chlorophyll-a (1.64 mg/g fr. wt.), chlorophyll-b (0.70 mg/g fr. wt.), total chlorophyll (2.35 mg/g fr. wt.), reducing sugars (2.00 %), non-reducing sugars (0.81 %), total sugars (2.81 %), ascorbic acid (134.30 mg/100 g). The same treatment also registered maximum gross returns (6,30,357 ₹/ha), net returns (4,85,590 ₹/ha) and B:C ratio (3.35) in chilli.