Soil fertility management in barley
1996
Taye Bekele (IAR, Addis Abebe (Ethiopia)) | Yeshanew Ashagrie | Balesh Tulema | Girma Gebrekidan
This paper presents an overview of several fertilizer trials that have been conducted in different parts of the country with the aim of improving the soil nutrient balance and availability and finding out the optimum level of N and P fertilizer for barley. Results at Holetta showed that the responses of food and malt barley to N and P and N/P interaction was significant on the Nitosols and vertisols, which are the two major soil types in the area. The best levels of N and P on both soil type were 60 and 26 kg ha-1 of N and P respectviley. The application of lime significantly increased the grain yield of barley by almost tenfold at Chencha. After a series of investigations at Sheno it was found out that soil burning could be replaced by deep ploughing or camber-beds and the use of fertilizers. It was established that sources of phosphate such as bone meal, basic slag and rock phosphate can effectively be used to increase yield of barley. The results of EPID fertilizer trials showed that N/P response at the level of 41 kg N and 20 kg P was more economical than other levels tested. More recently ADD and NFIU revised the recommendation based on soil color, region and crop.
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