BIOCHEMICAL CHANGES IN GREEN AND RIPE FRUIT OF CHILLI (CAPSICUM ANNUUM L.) AS INFLUENCED BY LEVELS OF DRIP IRRIGATION AND NITROGEN FERTILIZER WITH OR WITHOUT MULCHING
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Date
1996
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AAU, Anand
Abstract
Chilli (Capsicum annuum L.) is an important vegetable crop with industrial and medicinal values. Different agronomic practices are known to affect the yield and quality of chilli fruit. In present studies an attempt was made to understand the influence of different levels of irrigation, mulch and nitrogen fertilizer on biochemical composition of chilli fruit at two different growth stages i.e. green mature and red mature. The various levels for irrigation were drip irrigations at 40% (I1), 60% (I2), 30% (I3) replenishment of PE and surface irrigation at 0.7 IW/CPE ratio (I4 ). The mulch treatments were no mulching (M0) and mulching with black polythene (M1). The nitrogen fertilizer levels were 75 (F1 ), 100 (F2 ) and 125 (F3) kg ha-1 . Jwala variety of chilli was grown in replicated plots and subjected to all possible treatment combinations. The fruits were analyzed for moisture, chlorophyll, ascorbic acid, capsaicin, total carbohydrate, protein, oil and fibre content at two growth stages. The results showed that quality of chilli fruits was improved when the crop was supplemented with surface irrigation at 0.7 IW/CPE ratio with 125 kg N ha-1 under black polythene mulch treatment at green mature stage; while at red mature stage, drip irrigation at 80% replenishment of PE applied with 125 kg N ha-1 and black polythene mulch treatment gave good quality of chillies. The treatment combinations I4M1F3 and I3M1F3 at green mature and red mature stages, respectively were pinpointed for producing chillies with good quality.
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BIOCHEMISTRY, AGRICULTURE, A CASE STUDY