POTASSIUM FERTILIZATION FOR SOME INTERCROPPING PATTERNS IN EGYPTIAN NORTHERN DELTA SOILS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 3, Volume 73, Issue 1, March 1995, Pages 25-35 PDF (3.7 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1995.433173 | ||
| Authors | ||
| MOHAMED H. HEGAZY; SAEED A. GENAIDY | ||
| Soil and Water Research Institute, Agricultural Research Centre, Giza, Egypt | ||
| Abstract | ||
| Two factorial field expeeriments were conducted during 1991/ 1992 season, the first on sugar beet/faba bean and the second on maize/soybean intercropping patterns to evaluate the relative efficiencies and economic optimum rates of k- sulfate fertilizer. The soil experimental sites were clayey in texture and the average values of chemical characteristics were as follows : Eco -2.20 dSm-1, pH -8.26, O.M. -1.36% and the available N-, P- and k- were 51, 9 and 347 mg.kg 1, respectively. The results showed that potassium fertilization as k- sulfate was beneficial for sugar beet, faba bean, maize and soybean whether grown in monocropped or intercropped patterns. The relative k- fertilizer efficiencies were reduced in intercropped patterns compared to monocropping systems. The economic optimum k- fertilizer rates inceased in inter-cropped patterns relative to monocropped patterns. The values of (E.O. k- rate)/(E.O. crop yield) ratio were lower under monocropped patterns relative to intercropped ones. | ||
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