Effect of various forms and application time of mineral nitrogen on wheat productivity in the newly reclaimed lands [electronic resource].

Includes reference.

The best combination of forms and application time of chemical nitrogen fertilizer is considered one of the primary factors for high grain yield in wheat. The present investigation was designed to study the response of Giza 163 wheat cultivar to three forms and fourteen different times for appfication of nitrogen fertilizer in the newly reclaimed land conditions. Two field experiments were carried out in two consecutive winter seasons of 2001 / 2002 and 2002 / 2003 located at EL-Bustan Experimental Farm. Faculty of Agriculture, Damanhour. A split-plot design in a randomized complete block arrangment, with three replicates, was used. The three nitrogen forms (ammonium sulphate 20.5 % N, ammoninm nitrate 33.5 % N and urea 46 % N) were assigned to the main plots, whereas the fourteen times of applying the three formes [either adding one dose. or equal splitting doses at different stages of growth( at sowing, 1st irrigation, tillering and at heading)] were allocated to the sub - plots.

Summary in Arabic.

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