Author(s): K. Ramah

Affiliation: Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam-641301, Tamil Nadu, India

Abstract: Field experiments were carried out at Agricultural Research Station, Tamil Nadu Agricultural University, Bhavanisagar during 2013 and 2014 to optimize the fertilizer level and form of fertilizers for maize - blackgram cropping system under drip fertigation. The experiment consisted of five treatments with two levels of recommended dose of fertilizer (RDF) viz., 100% and 75% by means of normal fertilizer and water soluble fertilizers (WSF) and drip irrigation with surface application of 100% RDF. The experiment was laid out in Randomized Block Design with four replications. The cropping system followed was maize (kharif) - blackgram (rabi). Among the fertigation treatments studied, the drip fertigation with 100% RDF as WSF recorded the highest yield parameters followed by drip fertigation with 75% RDF as WSF and both the treatments were statistically on par. However, drip fertigation with 100% RDF as WSF recorded significantly higher grain yield of 6144 kg ha^-1 in maize and 807 kg ha^-1 in black gram with total net income of Rs.50,473 ha^-1 for the cropping system as a whole.

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