ROLE OF APPLICATION LEVELS OF PHOSPHORUS TO SOIL AND SPRAY ON GRAIN YIELD AND ITS QUALITY BY MAIZE

J. Al-Tememi, Ali; M. Abu-dahi, Yousef

	ROLE OF APPLICATION LEVELS OF PHOSPHORUS TO SOIL AND SPRAY ON GRAIN YIELD AND ITS QUALITY BY MAIZE
The Iraqi Journal of Agricultural Science
Article 1, Volume 41, Issue 4, 2010, Pages 92-103
Authors
Ali J. Al-Tememi; Yousef M. Abu-dahi
Abstract
A field experiment was conducted at the field of college of Agriculture – Univ. of Baghdad in Abu – Ghraib during the spring season of 2008 in silty clay loam soil texture classified as a Typic Torrifluvent. This was to study the role of applying phosphorus fertilizer to soil and with foliar feeding on grain yield and its quality 0f maize, cv. Bohooth 106. Three levels of phosphorus 0, 40 and 60 kg P.ha-1 were added to soil and three concentrations 0, 3000 and 6000 mg P.L-1 were used as foliar. Triplesuperphosphate (20% P) was used as phosphorus source. A randomized complete block design was used with three replications. A fixed amounts of N and K were used they were 200 kg N.ha-1 as urea (46% N) and 160 kg K.ha-1 as potassium chloride (50% K) as source for N and K respectively. Results showed that the interaction treatment of 40 kg P.ha-1 added to the soil and 3000 mg P.l-1 as foliar feeding had significant results and had the superiority to give the highest value of grain yield and the weight of 500 grain and the protein percentage of grain, that were 7.25 ton.ha-1 for grain yield, 137.70 g for 500 grain weight and 13.99% for protein percentage in grain respectively. Also result showed that the same treatment had that superiority to give the highest value of protein yield and oil yield that were 1014.30 kg.ha-1 and 319.10 for protein yield and oil yield compared with the control treatment respectively.

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