Response several Genotypes of maize to Different levels of Phosphate fertilizer and Estimate the Genotypic and Phenotypic correlations

	Response several Genotypes of maize to Different levels of Phosphate fertilizer and Estimate the Genotypic and Phenotypic correlations
Euphrates Journal of Agriculture Science
Article 1, Volume 5, Issue 4, 2013, Pages 384-400
Abstract
ABSTRACT : Afield experiment was conducted at the farm of Instait Agriculture in Al- heendia- Karbala province during the autumn season 2011. Asplit plot arrangement within Rondomized Complete Block Design with three replicates was used. The objectives of this experiment were to investigate the response of five genetic structures of maize were assigned in subplot (shahd- single haybord, syn-maha, syn ـــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــ 5012, sye 106, syn 5018) to four phosphorus fertilize levels. (0, 100, 200 and 300 kg P2O5/ ha) were assigned in the main plots.analysis the variance was significant at 5%. The results the cultivar 106 for higher total uptake of phosphours (147.97 kg/ ha) number rows of ear (16.67 row) number grains in row (57.27 grain) number grain in ear (954.90 grain) biomass yield (25959 kg/ ha). the showed the highest interaction (300 kg P2O5/ ha) and shaheed single cross for concentrations phosphours % gave in (0.66%), ear length (23.03 cm), 100 grain weight (294.40 gm) and the cultivar 5018 gave in the highest interaction for yield efficiency (284.30 gm/ m2) and The interaction between 300 kg P2O5.ha-1 and syn gave the highest grain yield (12313kg/ha). It could be concluded from this experiment that planting 106 syn and shahd with 300 kg P2O5.ha-1 of planting the two genotypes and 5018 syn control were of important active to increase grain yield of corn.

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