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EFFECT OF FOLIAR POTASSIUM APPLICATION ON CORN YIELD IN TWO IRAQI SOILS | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 4, 2012, Pages 183-187 | ||
| Authors | ||
| H.M. Ali; ; ; and Salman; | ||
| Abstract | ||
| Two field experiments were conducted in two research sites one on a clay soil at Wasit Governorate and the other on a sandy loam soil at Kirkuk Governorate, to study the response of corn crop to foliar potassium application. Trials at the two sites included four levels of potassium 0, 21, 42 and 63 kg K ha-1 applied in six split foliar applications. Results of the two sites indicated that potassium fertilization had significant effect on dry matter and grain yields. Foliar potassium application at the rate of 63 Kg K ha-1 increased dry matter yield from 8213 (for control) to 10293 kg ha-1 (an increase of 25 %) for Wasit Site and from 3923 to 5425 Kg ha-1(an increase of 38 %) for Kirkuk site. Grain yield increased at the rate of 63 kg K ha-1 from 4667 (for control) to 9520 kg ha-1 with an increase of 104% at Wasit Site and from 6424 to 8473 kg ha-1 (with an increase of 32%) for Kirkuk site. Fertilizers productivity ranged between32.4 to 49.6 kg grain Kg-1 K fertilizer and 3.7 to 13.7 kg grain kg-1 K fertilizer applied for Wasit and Kirkuk sites respectively. | ||
| Keywords | ||
| Corn; Iraq | ||
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