Author(s): S.S. MONDAL AND ARUP GHOSH

Abstract: A field experiment was conducted during 2003 and 2004 iri farmer\'s field of West Bengal inentisol soil of neutral reaction having 0.068% total N, 26.8 and 195 kg/ha available P and K, respectively to study the effect of Integrated Nutrient Management on the productivity of the crops in rice-lathyrus - (as utera}-sesame cropping system under rainfed condition. The results revealed that the yield of crops differed significantly with different nutrient management with organic and inorganic sources in rice-lathyrus (as utera}-sesame cropping system. The highest grain yield of rice (4912.7 kg/ha} was recorded in the treatment receiving 75% RD of NPK to rice and sesame only + in situ green manuring to rice witll dhaincha (Sesbania aculeata) + FYM @ 10Vha to rice (T 11), which was as good as the yield of the crops recorded in the treatments receiving 100% RD of NPK to rice and sesame only+ FYM@ 10 t/ha to rice (T8}, 150% of RD to rice only (T4} and 100% RD of NPK to rice and sesame only+ in situ green manuring of rice with dhaincha (T8). In rice, applying higher dose of fertilizer (150% of RD to rice only) increased the grain yield of rice but this treatment was not consistent in increasing the yield of the other erops in sequence. The highest seed yield of lathyrus {1096.1 kg/ha) and sesame {659.5 kg/ha) was recorded under the treatment, T.11. followed by that obtained under T6 and T8 treatments. Higher yields of the crops were also obtained with the application of reduced rate of fertilizer {75% RD of NPK to rice and sesame) in conjunction with FYM@ 10 t/ha to rice (T5} or in situ green manuring of rice with dhaincha (T7) or application of crop residues (T10}. The lowest yields of the crops were recorded by imbalanced application of nutrients (Farmers practice). Plant nutrient uptake of all the crops in sequence was also favourably influenced by integrated nutrient management in rice-lathyrus (as utera)-sesame cropping system by application of reduced dose of inorganic fertmzers to rice and sesame when used in combination with FYM. Application and in situ green manuring with dhaincha to rice crop.

Download Full Article: Click Here