Abstract
The study was undertaken with an objective to improve the indigenous phosphorus (P) recommendation system by the inclusion of soil test values and P- fixation tendencies of a specific site. To assess the applicability of quick test methodology (Mclean's model), field experiments were started on different soil series i.e. Pindorian and Kamonke. Wheat was grown as a test crop. Phosphorus dose to get 95 and 99% yield targets were calculated for both soils by McLean's model. It was observed that phosphorus fertilizer dose for both sites to get 95% yield target was lower (15-19 Kg PiOs ha1 ) than the generalized rate by the Punjab Agriculture Department for wheat crop. Non-significant difference in grain yield was recorded for the treatments receiving the generalized and calculated dose (for 95% yield target) of P fertilizer. However, P application at the rate calculated for 99% yield target based on soil test resulted in significantly higher yield as compared to generalized dose. Phosphorus concentration in the diagnostic plant tissue also depicted the same trend. Initial data on the application of quick test in the field was quite satisfactory but its use for advisory service to the farmers needs extensive experimentation.
Z. Ahmad, , M. Akram, , S. M. Mian, K. H. Gill1 . (1996) USE OF QUICK TEST METHODOLOGY FOR PHOSPHORUS FERTILIZER RECOMENDATIONS, The Journal Soil & Environment , Volume 12, Issue (3-4).
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