تلخیص
A field study was conducted to generate specific information an effect of single and combined application of mineral and organic sources of nitrogen in conjunction with effective microorganisms (EM) inoculum as a biological component of Integrated Plant Nutrition System (IPNS) for wheat production. The results showed a significant increase in all growth parameters, yield and quality of crop through integrated use of organic and mineral sources of N as compared to control. Amongst the various N sources, mineral N applied alone was found to be the best giving maximum grain and straw yields (3146.3 kg grain he and 4105.3 kg straw ha'), protein contents in grain (13.36 To) and net return (Rs.13793). However, economic analysis suggested the use of mineral N + 0 organic N along with EM whereby a poorer farmer can get substantial and comparable yield (2882 kg grain he and 3965 kg straw ha-'), a better quality (i.e. protein contents in grain = 12.39 %) and higher rate of return (9.65 VCR). EM application was found to increase the efficiency of organic N sources as well as integrated form of organic + mineral N sources but alone was proved to be ineffective for increasing wheat yield.
Iftikhar Ahmed, Moazzam Jamil, Munir Hussain Zia , Aslant John. (1999) Nitrogen management for wheat production through integrated plant nutrition system, The Journal Soil & Environment , Volume 17, Issue (3-4).
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