Vol. 16 No. 3
Effect of integrated nutrient management on the performance of cassava + green manure cowpea system in lowlands
Author(s): A. P. POOJA AND O. K. SWADIJA
Abstract: An experiment was undertaken at College of Agriculture Vellayani, Thiruvananthapuram, Kerala during 2017-18 to study the effect of integrated nutrient management on the performance of cassava+ green manure cowpea system in lowlands. Short duration variety of cassava (Vellayani Hraswa) and cowpea variety (Anaswara) were used for the study. The experiment was laid out in factorial randomized block design with three replication, comprising three sources of organic manure [M1 : FYM @ 12.5 t ha-1, M2 : FYM @ 6.25 t ha-1 + green manuring in situ with cowpea and M3 - poultry manure (PM) @ 2.5 t ha-1 + green manuringin situ with cowpea], two levels of N (50 and 75 kg ha-1) and two levels of P (25 and 50 kg P2O5 ha-1) along with a uniform dose of 100 kg K2O ha-1. The study revealed that the performance of lowland cassava was improved in cassava + green manure cowpea system than cassava alone. Combined application of poultry manure @ 2.5 t ha-1 + green manuring in situ with cowpea + 75 : 25 : 100 kg NPK ha-1 registered superior growth characters of cassava and cowpea, highest green matter yield of cowpea and tuber yield of cassava and profitability of cassava+ green manure cowpea system in lowlands.
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