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| dc.contributor.author | Enyew, Alebachew | |
| dc.date.accessioned | 2020-06-12T06:06:32Z | |
| dc.date.available | 2020-06-12T06:06:32Z | |
| dc.date.issued | 2019-12 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/11025 | |
| dc.description.abstract | The development of irrigation and agricultural water management holds significant potential to improve productivity and reduce vulnerability to climatic change. Improper on-farm irrigation water management, however, shifts to ineffective water use, poor water distribution, yield reduction and leaching of nutrients. This study dealt evaluating the effect of water management technologies on partial nutrient balance under irrigated wheat production at Koga irrigation scheme. The experimental factors include three irrigation blocks (Chihona, Adibera, and Teleta) and three irrigation water management practices (wetting front detector, chameleon soil moisture sensor, and farmer’s practices), and 27 farm plots were selected as replications. To do the partial nutrient balance of nitrogen, phosphorus and potassium, the amount of irrigation water applied and its nutrient content, agronomic attributes of wheat, plant nutrient content, leaching and nutrient content were collected and three nutrient fluxes entering and leaving at the farmers’ field were considered. The result showed that on average 33% and 22% of irrigation water was saved using wetting front detector and chameleon, respectively compared with control and the higher water productivity, grain yield, and the adequate timing of irrigation was achieved in the same order. The WFD and CHS were accounted for 20% and 15.8 % of yield respectively more than the control plot. The irrigation field has a higher nutrient concentration in groundwater compared with non- irrigated fields. The partial nutrient balance of nitrogen, phosphorus and potassium were -48kg N/ha, -47kg N/ha, -43kg N/ha; 38kg P/ha, 22kg P/ha, 39kg P/ha and 9.5kg K/ha, -8.5kg K/ha and -2.6kg K/ha for WFD, CHS and control (FP) respectively. The depletion of nitrogen, potassium and enrichment of phosphorus were achieved for the three treatments. This study concludes that the implementation of irrigation water management is appropriate for improving yield, water productivity, and nutrient management but, the technologies can not indicate the sustainability of soil fertility status clearly. However, further research should be conducted on full nutrient balance to indicate soil nutrient status sustainability collaborative with novel irrigation management technologies. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | Irrigation Engineering | en_US |
| dc.title | Evaluations of the Effect of Water Management Technologies on Partial Nutrient Balance for Wheat (Triticumaestive L.) Production in Koga Watershed, Ethiopia | en_US |
| dc.type | Thesis | en_US |
