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The Ethiopian Agricultural Research is one of the oldest and largest agricultural research system in Africa. Ethiopian Agricultural Research System (EARS) has evolved through several stages since its first initiation during the late 1940s, following the establishment of agricultural and technical schools at Ambo and Jimma. In 1955, a full-fledged agricultural experiment station was established at Debre Zeit (now named Debre Zeit Agricultural Research Center) under the then Imperial College of Agricultural and mechanical Arts (now called Haramay [...]

Journal Article

Journal Article

Response of Barley to Nitrogen and Phosphorus application in Wello highlands of Ethiopia: II. Nutrient uptake and use efficiency.  [2003]

Getachew Alemu and Tekalign Mamo(Researchers); Ethiopian Society of Soil Science [Corporate Author]

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Barley (Hordeum vulgare L.) is a commonly grown crop in the dry highlands of Wello. The soils in this area are very poor in nutrients owing to intensive soil erosion and a long cropping history. Hence, it was considered important to use mineral fertilizers for sustainable crop production and ultimately to respond to the current high demand for food. However, no study had been conducted to verify this. Therefore, with the objective of elucidating the response of barley to applied N and P fertilizers a field experiment was conducted at Estayesh, North Wello, during the 1997 and 1999 main cropping seasons. Four rates of N (0, 23, 46, and 69 kg ha-1as urea) in factorial combination with four levels of P (0, 10, 20, and 30 kg ha-1 as TSP) were studied. The results indicated that applied N influenced nitrogen and phosphorus concentrations of both grain and straw, while applied P had little effect on the same parameters. Application of N and P significantly (P0.01 and P0.05) increased (in a linear response) N and P uptake in grain, straw and total biomass in both seasons. Generally, the grain and straw N uptakes were grater in the relatively wetter season (1997) than in the drier season (1999). Apparent N recovery (ANR), nitrogen agronomic efficiency (NAE) and nitrogen physiological efficiency (NPE) were significantly affected by N application rates in both seasons except for NUE in 1999. Apparent p recovery (APR),. Phosphorus agronomic efficiency (PAE) and phosp
horus physiological efficiency (PPE) were not significantly affected by P application rate in either season. Nitrogen and phosphorus harvest indexes (NHI and PHI) were significantly affected by applied N and P rate, while grain protein concentration was affected only by N rate. Thus, it is concluded that soil fertility management particularly mineral fertilizer application, cannot be ignored if t he productivity of barley is to be improved in the study area in the short-term.

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Bibliographic information

Language:
English
Type:
Other
In AGRIS since:
2010
Extent:
39-56p.
All titles:
" Response of Barley to Nitrogen and Phosphorus application in Wello highlands of Ethiopia: II. Nutrient uptake and use efficiency. "
Other:
" 2 Figures "
" 5 Tables "
" 18 References "
" 2 Figures;5 Tables;18 References; "

From the journal

Ethiopian Journal of Natural Resources.

ISSN : 1563-3705