Sunnhemp Research Station, Central Research Institute for Jute and Allied Fibres, Pratapgarh-230 001, India
*Corresponding author's address: Division of Crop Production, Central Research Institute for Jute & Allied Fibres, Barrackpore, Kolkata-700 120, India
A field experiment was conducted during summer and rainy seasons of 2001–08 at Sunnhemp Research Station, Pratapgarh, Uttar Pradesh to study the inftuence of organics in combination with inorganics on fibre productivity, nutrient uptake by sunnhemp (Crotalaria juncea L), and residual effect on rice (Oryza sativa L.) and soil fertility. Integration of Rhizobium, PSB and FYM with 50 and 15%NPK recorded equivalent fibre yieldof sunnhemp (1.04 and 1.14t/ha respectively), which were at par with 100% NPK (1.04 t/ha) and 100% NPK + FYM (1.12 t/ha). The highest grain yield of residual rice (4.45 t/ha) was recorded with 15% NPK + Rhizobium + PSB + FYM which was at par with 50% NPK + Rhizobium + PSB + FYM (4.30 t/ha) and 100% NPK + FYM (4.36 t/ha). The residual soil fertility improved considerably with the combined application of inorganic fertilizer and organics. It was concluded that integration of organics (Rhizobium, PSB & FYM) with inorganics led to 50% saving of inorganic fertilizer without scarifying the yield of sunnhemp-rice cropping sequence and improved soil fertility status.
Nutrient management, Nutrient uptake, Rice, Soil fertility, Sunnhemp
