Author(s):

M Thenmozhi and SV Kottiswaran

Abstract:
The experiments were conducted (Field No. NA5) in naturally ventilated polyhouse and open field conditions at PFDC farm, TNAU, Coimbatore to study the effect of drip fertigation with different polyethylene mulches in Capsicum crop under polyhouse and open field conditions. The experiments were laid out in completely randomized design with six treatments which included three mulching levels, viz. 25 micron black plastic mulch, 50 micron black plastic mulch and no mulch, two fertigation levels, viz. 100 and 80% of recommended N and K fertigation through drip irrigation and replicated thrice. In polyhouse, the higher yield was obtained in the treatment of 25 micron thickness with 100 per cent RDF and the minimum yield was obtained in treatment T₅. In open field conditions, the higher yield was obtained in the treatment of 25 micron thickness with 100 per cent RDF and minimum yield was obtained in treatment T₅. Drip irrigation with fertigation, water use is reduced, nutrient application is precise and yields of crops also increased. With fertigation, nutrient use efficiency is increased and the risk of loss of nutrients to the ground water is reduced. Hence the research was conducted to study the effect of fertigation with plastic mulching in polyhouse and open field.

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