EFFECT OF INTERPLANTS SPACING AND METHODS OF NITROGEN APPLICATION ON GROWTH OF THREE SYNTHETIC CORN VARIETIES (Zea mays L.)
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 1, Pages 212-224
AbstractTwo Field experiments were conducted during the growing season 2007 in Mosul and Tikrit to determine the influence of application method of nitrogen fertilizer (Broadcasting or band fertilization 10 cm in row far from seed) and different spaces between plants (15, 25, 35 cm) in growth of three varieties (Buhooth 106, Rabi, Safa) . Data were subjected to the conventional analysis of Randomized Complete Block Design (RCBD) with three replications .Result of Mosul location apperared that the variety Buhooth 106 was superior to gave less ear flowering period and gave more height in plant length. moreover the distance (15 , 35)cm were significant increase in plant length. Fertilizer application method did not show any significant differences in field growth characters except the leaf area which showed superiority in the method of adding fertilizer by spray in Tikret location. while in Mosul location the band fertilization method was the beast for leaf area, the distance 35cm appeared superiority in these two locations. The interaction between varieties and inter plants spacing Buhooth 106 and Safa with 15cm appeared superiority in their early ear flowering period in Tikret location ,while in Mosul location the variety Safa with 15cm showed an early female flowering period . Buhooth 106 gave high plant height for the two distance (15,35) cm .the variety Rabee with distance (35) cm showed higher leaf area .where as in Tikret location the Buhooth 106 and Rabee with 35 cm gave larger leaf area per plant.Buhooth 106 in its interaction with (15,35) cm gave higher leaf area index .As for the interaction between the distance and the method of adding fertilizes ,the distance (35) cm with adding fertilizers in band fertilization method was superiority in leaf area for individual plant , Adding fertilizer in broadcasting way showed superiority in leaf area index in the two studied locations.The tri-interaction in Mosul location ,Buhooth 106 for 15 cm distance with broadcasting method for fertilization showed superiority in plant height , again the same variety with 35 cm distance with adding fertilizer in row gave high avarge of leaf area character an individual plant . Safa variety with 15 cm distance by adding fertilizers in broadcasting way gave superiority in leaf area index , as for Buhooth 106 with 15 cm distance to adding fertilizers in row way , it gave higher significant for the same previous character.
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