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Browsing Volume 20 by Title

Browsing Volume 20 by Title

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  • RELATIONSHIPS BETWEEN LABILE PHOSPHORUS AND OLSEN PHOSPHORUS TEST VALUES OF ALKALINE SOILS 
    A. Rashid; T. Hussain; A. Razzaq (Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2001-09-07)
    For the development of soil and plant phosphate (P) model, the soil labile-P values are required in addition to fertilizer P availability indices. This study was conducted to determine the relationship of labile-P (IRA-400 ...
  • ROLE OF PYROPHOSPHATE AND ORGANIC ACIDS IN ORTHOPHOSPHATE SORPTION BY CALCIUM CARBONATE 
    fiaz Ahmad; Kelso, William Ian (Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2001-09-08)
    Since the recovery of phosphate in calcareous soils Is tow, the effectiveness of added pyrophosphate (PP) and organic acids in reducing phosphate sorption by calcium carbonate (CaCOs) was studied in the laboratory. ...
  • ZINC REQUIREMENT OF WHEAT CROP 
    Chaudkary, Rehman, A.; M. Akram; K. H. Gill; M. Akram Qazi' (Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2001-12-14)
    Zinc requirement of wheat crop was investigated through a field experiment laid oat in farmer's field on a zinc (Zn) deficient soil near Kasur in Lahore Division during 1997-98. Levels of Zn (kg ha'1 ) tried were 0, 2.5, ...

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