RESPONSE OF CORN  TO SOIL  AND  FOLIAR FERTILIZATION WITH N, P AND K

H.  Faraj, A.

	RESPONSE OF CORN TO SOIL AND FOLIAR FERTILIZATION WITH N, P AND K
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 12, Issue 1, 2007, Pages 0-0
Author
A. H. Faraj
Abstract
This study was conducted at the State Board for Agriculture Research Experimental Station, Abu-Ghraib on silty clay loam soil during two seasons (2001 and 2002). The purpose was to justify the effect of soil and foliar application of N, P and K on response of Corn( Zea mays L.) cv. using (RCBD) design with three replications .The experiment contained 16 treatments prepared from four levels of N,P and K as soil application; (S0) without application; (S1) 300, 60 and 120; (S2)150, 30 and 60 and (S3) 75, 15 and 30 Kg . ha-1 respectively along with four treatments of foliar application: with water only (Fw) control; F1NPK (1000N+500P+1000K), F2NPK (3000N+1500P+3000K) and F3NPK (5000N+2500P+5000) K mg.l-1. Foliar application treatments were used with all soil application treatments. The results showed that the application of the recommended soil of fertilization dose gave the highest biological and grain yields, the weight of 1000 seeds and plant height compared with the other soil fertilization treatments. Foliar fertilization with (5000N +2500P+5000K mg.l-1) showed the highest increase in all examined parameters compared with the all other soil fertilization treatments. The results also showed that the interaction effects between soil and foliar application of S1F3NPK and S2F3NPK gave significant differences in all examined parameters compared with other soil and foliar fertilization treatments. There were no significant differences between the last above mentioned treatments.

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