"1854","8","archive","14",,,"disk0/00/00/18/54","2011-09-22 08:15:24","2011-09-22 08:15:24","2011-09-22 08:15:24","article",,,"show","Library-ICRISAT@cgiar.org",,,"","","","","","","","","","","0",,,"Sahrawat","K L","","","","","","","Sahrawat","K L","","","","",,,,,"","",,,,,"","","ICRISAT(Patancheru)","India","Residual phosphorus and management strategy for grain sorghum on a vertisol","pub","s1.4","","","restricted",,,,,,"Fertilizer phosphorus (P) use on Vertisols of the semi-arid zone in India is becoming more common, so it is important that for developing P management strategies the residual value of P is allowed. Little information is available on this aspect for crops such as sorghum under rainfed cropping. A field experiment was conducted for three years to study the response of sorghum to fertilizer P (0, 10, 20, and 40 kg P ha-1) in the absence and presence of P residues from the preceding year on a Vertisol (Typic Pellustert), low in extractable P (0.4 mg kg-1 soil Olsen-P). Despite the variable rainfall received during the cropping season (June-September), P applied in the previous season had strong residual effects. Sorghum yield and P uptake in treatments in which P was applied at 20 or 40 kg P ha-1 once in two years was at par with or higher than in treatments in which 10 kg or 20 kg P ha-1 was added every year. Ninety percent relative grain yield was achieved at about 20 kg ha-1 of fresh P and the results presented show that application of 40 kg P ha-1 once in two years can satisfactorily meet the P requirement of sorghum on the Vertisol.","2000","published",,"Communications in Soil Science and Plant Analysis","31","19/20","Taylor & Francis",,"3103-3112",,,,,,,,,,,"TRUE",,"0010-3624",,,,,,"","http://dx.doi.org/10.1080/00103620009370653","http://scholar.google.co.in/scholar?as_q=Residual+Phosphorus+and+Management+Strategy+for+Grain+Sorghum+on+a+Vertisol&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdtf=&","author",,"","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,