Efficacy of bio-chemical amendments on phosphate availability and wheat yield in salt affected soils
2010
Khan, Q.U. (Gomal Univ., Dera Ismail Khan (Pakistan). Dept. of Soil Science) | Khan, A.N. (Gomal Univ., Dera Ismail Khan (Pakistan). Dept. of Soil Science) | Saif-ur-Rehman (Agricultural Research Inst., Dera Ismail Khan (Pakistan)) | Sanaullah (Agricultural Research Inst., Dera Ismail Khan (Pakistan))
In a field experiment conducted at Agricultural Research Institute, Dera Ismail Khan, Pakistan during 2004-06 effect of bio-chemical amendments {FYM, gypsum, press mud and dhaincha (green manure)} on phosphate availability and wheat yield was studied under rice-wheat cropping pattern in salt affected soil. The result showed that all treatments significantly (P less than 0.05) influenced the wheat yield. The highest yield (4525 kg/ha) was observed in green manure with dhaincha (Sesbania aculeata), which was at par with pressumd. The phosphate content in soil increased each year and was significantly affected by various treatments. At the end of study, the highest P content (8.09 mug P/g soil) was recorded in green manure treatment. There was a positive correlation between P-uptake and extractable phosphate (r = 0.99). A close relationship (r = 0.99) between P-uptake and wheat yield was also observed.
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