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EFFECT OF PHOSPHORUS APPLIED FOLIARY AND MIXED IN SOIL ON THE AVAILABILITY AND UPTAKE OF P, Zn AND Cu BY MAIZE | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 37, Issue 2, 2006, Pages 15-22 | ||
| Author | ||
| H. Y. Al-Dilaimi | ||
| Abstract | ||
| A field experiment was conducted in fall season of 2000 at the College of Agriculture, University of Baghdad, to study the effect of levels and methods of phosphorus fertilizer application on availability and absorption of phosphorus, zinc and copper by corn (Zea mays L). Results showed that there was a significant increase in the dry matter, P, Zn, Cu uptake and concentration by soil or foliar application over control except Cu with soil application. In the case of soil application phosphorus absorption efficiency was (%57) while in the foliar application phosphorus absorption efficiency was (%97). The correlation between phosphorus absorption and Zn or Cu uptake was r = 0.94 for Zn and r = 0.99 for Cu and in the case of foliar application r = 0.80 for Zn and r = 0.74 for Cu. In general, the absorption and concentration of P, Zn and Cu in plant was superior with foliar than in soil phosphorus application. | ||
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