Abstract
In general, soils are deficient in nitrogen therefore its use has become inevitable for obtaining high cop yields. Nitrogenous fertilizes play dominant role in increasing the crop yield and also enhancing the protein contents of crop, as nitrogen is a contituent of proteins. Majority of the farmers are not applying proper doses of nitrogen fertilizers at proper time due to which a considerable fraction of the applied nitrogen is lost. To evaluate the effect of source of nitrogen and its time of application on yield and uptake in crop, a field experiment was conducted on maize in a randomized complete block design with three replications. Two nitrogen sources i.e. Urea and calcium ammonium nitrate (CAN) were tested @ 150 Kg N ha'1 each applied at various stages of growth (all at sowing, 1/2 at sowing + 1/2 with 2nd irrigation, 1/3 at sowing +1/3 with 2nd irrigation +1/3 at tasseling). After harvesting, stover and grain yield recorded and representative plant samples of both stover and grain were taken and analysed for total nitrogen. It showed that both the sources (urea and CAN) gave maximum yield when applied in two splits and uptake of nitrogen is also high with the above metioned treatment
Amer Sohail Cheema,, Zammurad Iqbal Ahmed,, Ch. Muhammad Azam1 , Shah Muhammad. (1997) EFFECT OF SOURCE AND TIME OF NITROGEN APPLICATION ON YIELD AND UPTAKE IN MAIZE CROP, The Journal Soil & Environment , Volume 13, Issue (1-4).
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