Abstract
Field experiments were conducted in Almdiana district in autumn season 2014 – 2015 in ALmalha Irrigation project, to study the effect of plowing and planting methods on the growth and production of corn crop (Zea mays L.). The plowing methods represent the main plots while the planting methods represent the sub-plots. The plowing method includes four plows namely, subsoiler, combined subsoiler, moldboard plow, harrowing chisel and zero tillage. The methods of planting include rows and furrows. The results were analyzed using complete randomize design within split – plots. The plowing and planting methods significantly affected the plant growth and production parameters. The combined subsoiler surpassed the other plowing methods in plant height, leaf area, number of ears per plant, seeds production per signal plant and seed production, biological production, number of seeds per row and weight of 500 seeds. It gave the highest values which they are 129.6 cm, 10531.9 cm2, 1.667 ears per plant-1, 166 g.plant-1, 6684.16 kg.ha-1, 14.187 kg.ha-1, and 113.70 g, respectively. The combined subsoiler recorded the highest seeds per ear while zero tillage recorded the lowest values in 89.8 cm, 6489.0 cm2, 1.000 ear per plant-1, 92 g.plant-1, 3975.21kg.ha-1, 12.468 kg.ha-1 , and 85.70 g, respectively. Furrows planting method surpassed the rows in 121.4 cm , 8803.5 cm2, 1.333 ears per plant-1, 138 g.plant-1 , 5180.18 kg.ha-1, 13.63 kg.ha-1, 100.66g respectively, Expect number of seeds per row surpassed furrows planting it gave the highest value (27.40. The results showed that the moldboard plow and the subsoiler gave the highest values after the combined subsoiler.
Shaker H. Aday /Agric. College/ Basra University
Walled A. Gubiel /Agric. College/ Basra University
Noor S. Abdul jalel / Basra University
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