SOME ENGINEERING PROPERTIES OF MAIZE PLANTS, EARS AND KERNELS UNDER DIFFERENT IRRIGATION SYSTEMS | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 28, Issue 6, June 2003, Page 4339-4360 PDF (852.44 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.244640 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. M. EI-Gindy,; M. F. Abd EI - Salam; A. A. Abdel-Aziz; E. A. EI-Sahar | ||||
| Agrlc. Eng. Dept., Fae. of Agrie., Ai" Shams Unlv., Cairo, Egypt | ||||
| Abstract | ||||
| An experiment was conducted for !WO growing seasons at the Experimental Farm of Faculty of Agriculture. Ain Shams University (loamy clay soli). to study the effect of different irrigation systems on some physical-engineering propertias of zea maize. Sprinkler. pivot. surface and subsurface dl1p and modfied surface (gated pipes) irrigation systems were selected for this study. Data revealed that the ear and kernel dimensions. length and width of kernel were better when using sub-surface drip than those under other irrigation systems, while the kernel thickness was nol affected significantly due to different irrigation systems. Geometry diameter and spherecity. which may be considered the main criteria for grain separation and sieving operations, show significant effect with different irrigation systems. Ear weight. hectoliter weight of kernels, seed index and kernel coefficient were affected significantly with different irrigation systems or other agricultural. practices tested at the site. These properties are quite important characteristics concerning kernel storage, oeratlon and drying. Moisture content of kernet and ear, as the grain storage Guslity parameter was higher under sprinkler irrigation system than that under the other irrigation systems. Angle of repose. coefficient of friction. shelling energy. broken percent, bruised percentage and germination of kernels were affected SignifICantly with different irrigation systems. while shelling effi&iency was not affected significantly with different Irrigation systems. On the other hand. the maximum energy required for kernels shelling was 0.85 Joule when using sprinkler irrigation system, while the minimum energy required for kernels shelling was 0.65 Joule under pivot irrigation system. The lowest value of kernels visible damaged was 4% when using pivot irrigation systems. while lhe highest value was 13 % sprinkler under irrigation system. On the other hand, the lowest value of kemels invisible damaged was 23% when using pivot irrigation systems, while the highest value was 37% under sprinkler and drip surface or subsurface irrigation systems. | ||||
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