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تاثير نظم الحراثة في نمو وحاصل الذرة الصفراء Zea mays L المزروعة بطريقتي المروز والسطور . == Effect of Tillage system on the growth and production of corn (Zea mays L. ) that cultivation by ridge and seed drilling
Author name:
نور صالح عبد الجليل حسون الحميداوي
Supervisor name:
شاكر حنتوش عداي | وليد عبد الرضا جبيل
General topic:
Agricultural sciences
Specific topic:
Plant - Field Crops
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture
Language:
Arabic
University location:
Basrah
First pages:
31T1875 - p.pdf
Abstract:
field experiments was conducted in Almdiana district in autumn season 2014 - 2015 in ALmalha Irrigation project , to study effect the tillage system in the growth and yield of ( Zea mays L. ) that cultivated by ridge and seed drilling .The tillage system represent the main plots while the planting methods represent the sub - plots .The tillage system includes four plows namely, subsoiler , combined subsoiler , moldboard plow , harrowing chisel and zero tillage. The methods of planting include idge and seed drilling , The results were analyzed using complete randomize design within split - plots.The results showed that the tillage and planting methods them significantly effected on soil physical properties ( soil bulk density , penetration resistance , Ec and pH ) but the interaction was not significant .The highest soil bulk density was recorded for zero tillage and for the three periods of sample collection . the values of the soil bulk densities are 1.399 Mg.m - 3 while the lowest values were record for the combined subsoiler plow , the values are 1.254 Mg.m - 3 . For the other tillage being medium the values for the subsoiler plow are 1.346 Mg.m - 3 , they are harrowing chisel 1.336 Mg.m - 3, and moldboard plow are 1.316 Mg.m - 3 .For soil penetration resistance, the results showed that the combined subsoiler surpassed the other tillage in reducing soil penetration resistance , the values are 360.370 KN/m2 for the three periods respectively . while zero tillage treatment gave the highest values which they are 502.407 KN/m2 for the three periods respectively .The combined subsoiler plow also surpassed the other plow types in reducing Ec and pH . the lowest values were recorded for combined subsoiler , while the heights values were recorded for zero tillage.The results also showed that the tillage and planting methods significantly Effected the plant growth and production parameters , while the interaction was not significant in its effect on the studied parameters. The combined subsoiler surpassed the other plowing methods in all plant parameters studied which they are plant height , leaf area , ear length , number of ears per plant , seed production , biological production , number of seeds per row
