Effect of grading and planting methods on corn crop production [electronic resource].

Includes references.

Field experiments were carried out in salty clayey loam soil at the experimental farm of Gemmiza Agricultural Research Station Garbia Governorate to study the effect of different grading levels ofgrain corn and different planting methods on crop yield productivity during two successfUl summer seasons 200912010. The results indicated that the highest and lowest values of emergence ratio, number of plantlm2 and grain yield ardab!fed (96.1 and 71.5 %), (5.48 and 3.9 plantslm2 ) and (3. 745 and 2.678 ton!fed.j were obtained by using pneumatic planter at a medium level of gradation and mechanical planter at large level of gradation respectively by using single cross 10. Meanwhile with using varieties of Giza 2, the highest and lowest values of emergence ratio, number of plantslm2 and grain yield ton/fed (94.9 and 76.5 %), (5.47 and 4.3 plantslm7)and (2.982 and 2.. 160 ton!fed) were obtained by using pneumatic planter at medium level ofgradation and mechanical planter at large level ofgradation respectively.

Summary in Arabic.

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