تلخیص
The effect of ammonium sulphate ((NH4)2SO4), potassium nitrate (KNO3), ammonium nitrate (NR4NO3) and urea (CO( NI12)2) forms of N on P mobilization by `Dirk' and `Inglab-917 genotypes of wheat ( Tritcum aestivum L) was studied on an alkaline calcareous sandy clay loam soil. Phosphorus was added, as single super phosphate, C nil and 100 mg kg4 soil. Nitrogen was added at a uniform rate of 150 mg ke, from its various sources. Quantities of K added with KNO3 were balanced in other pots using KCl. There was a. significant ( p< 0.001) main and first and second order interactive effect of N forms, P application and wheat genotypes on shoot growth and P uptake by plants. Wheat genotype 'Mg:all-91' was relatively more responsive than `Dirk' to P application. Relative increase in shoot growth and P uptake by two wheat genotypes were maximum with (NII4).3SO4 followed by urea and KNO.3while NI-1003 produced minimum relative increase in shoot growth and P uptake in the two genotypes.
M. Imran, Rahmatullah, M. A. Gill , Tariq Aziz. (2003) Differential P mobilization by two wheat genotypes on a calcareous soil fertilized with ammonium sulphate, potassium nitrate, ammonium nitrate and U, The Journal Soil & Environment , Volume 22, Issue 4.
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