title: Effect of sulphur and phosphorus on yield, quality and nutrient status of pigeonpea (Cajanus cajan).
abstract: A field experiment was conducted to study the impact of Sulphur(S) and Phosphorus (P) on yield, nutrient status of soil and their contents in pigeonpea (Cajanus cajan) during the year 2008-2009. Seven treatments were studied in Factorial Randomized Block Design with three replications. The treatment combinations were derived from three levels of sulphur (0, 20 and 40 kg S ha(-1)) and four levels of phosphorus (0, 25, 50 and 75 kg ha(-1)). The experimental soil was medium black, slightly calcareous, clay in texture and slightly alkaline in reaction. The results indicated a significant increase in grain yield (14.81 q ha(-1)) and straw yield (41.26 q ha(-1)) of pigeonpea after 20 kg S ha(-1) and 50 kg P2O5 ha(-1) treatment with common dose of nitrogen @ 30 kg ha(-1). The increase in grain and straw yield was 102.77 and 52.87% as compare to higher over control. Maximum number of pods plant(-1), maximum number of grains pod and test weight by this treatment was also observed as compared to control. Application of S and P improved soil fertility status and S alone did not influence P availability. Hence, in order to maintain the fertility status of the soil at high level, combine application of 20 kg S ha(-1) with 50 kg P2O5 ha(-1) is essential. The residual fertility status of soil is advocated for rainfed pigeonpea crop grown on vertisol in Vidarbha region.
authors.affiliation: Environmental Impact and Risk Assessment Division, National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur--440 020, India. Pb_deshbhratar@neeri.res.in
authors.forename: P B
authors.initials: PB
authors.lastname: Deshbhratar
authors.forename: P K
authors.initials: PK
authors.lastname: Singh
authors.forename: A P
authors.initials: AP
authors.lastname: Jambhulkar
authors.forename: D S
authors.initials: DS
authors.lastname: Ramteke
mesh_terms: D036561:Cajanus / Q000254:growth & development*; D005308:Fertilizers; D010758:Phosphorus / Q000737:chemistry / Q000494:pharmacology*; D012987:Soil / Q000737:chemistry; D013455:Sulfur / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D005308:Fertilizers; D012987:Soil; D010758:Phosphorus; D013455:Sulfur