Effect of organic manures and rock phosphate on growth and yield of Bengal gram (Cicer arietinum L.)

A field experiment was conducted on vertisolsat Natural Resources Protection and Development Society Research Station, Namakkal during Rabi season of 2012-13 and 2013-14 to study the effect of organic manure sand rock phosphate on growth and yield of Bengal gram (Cicer arietinum L.) in vertisols of Tamil Nadu. Significantly higher grain yield was recorded with rock phosphate application @ 200 kg/ha (2140 kg/ha) over 50 kg and 100 kg of rock phosphate per hectare except rock phosphate @ 150 kg /ha (2069kg/ha). Interaction effect of compost 5 t along with rock phosphate 200 kg/ha recorded significantly higher grain yield 2130 kg/ha) and haulm yield (3300kg/ha) over other treatment combinations except either for organic manures FYM 5 to rcompost 5 t along with 150 to 200 kg rock phosphate per ha. Significantly higher B:C ratio (3.32)was recorded with rock phosphate @ 200 kg / ha over other lower levels. Similarly, combination of compost @ 5 t/ ha with 150 kg rock phosphate resulted in higher B:C ratio (3.37).