An agronomic and economic analysis of a long-term wheat-based crop rotation trial in Ethiopia
Material type:
TextPublication details: Addis Ababa (Ethiopia) CIMMYT : 1999ISBN: - 92-9146-058-3
- Agronomic characters AGROVOC
- Cropping systems AGROVOC
- Economic analysis AGROVOC
- Ethiopia
- Fertilizer application
- Hordeum vulgare
- Prices
- Profitability
- Soil types
- Statistical analysis
- Vicia faba AGROVOC
- CIMMYT
- Rotational - Término tomado de AGROVOC -- Término tomado de AGROVOC
- Triticum aestivum AGROVOC
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Conference proceedings | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Publications Collection | Look under series title (Browse shelf(Opens below)) | 1 | Available | V629146 |
Browsing CIMMYT Knowledge Center: John Woolston Library shelves, Collection: CIMMYT Publications Collection Close shelf browser (Hides shelf browser)
| Look under series title The effect of green manuring and application of fertilizer on the yield of bread wheat at Adet in North-Western Ethiopia | Look under series title Indigenous agroforestry: | Look under series title A study of variety by management interaction in bread wheat varieties released in Ethiopia | Look under series title An agronomic and economic analysis of a long-term wheat-based crop rotation trial in Ethiopia | Look under series title Determination of economic threshold densities for the mayor weed species competing with bread wheat in Ethiopia | Look under series title Determination of economic optimum fertilizer levels using discrete and continuous analytical methods | Look under series title The response of bread wheat to N and P application under improved drainage on bichena vertisols in North-Western Ethiopia |
Cropping systems in the- Ethiopian highlands consist primarily of cereals in rotation with grain legume and oilseed crops; the proportional allocation among crop species varies with altitude, rainfall, and soil type. Barley (Hordeum vulgare) tends to dominate in the highest altitudinal zones, while bread wheat (Triticum aestivum) is more common at medium altitudes on well-drained soils. A trial was established in 1992 at the Kulumsa and Asasa research sites in southeastern Ethiopia to evaluate interactions among wheat- based cropping sequences and annua1 app1ications of inorganic nitrogen (N) and phosphorus (P) fertilizer. Rotational crops included Ethiopian rapeseed (Brassica carinata), faba bean (Vicia faba), and barley. The results indicated significant rotational effects on wheat grain yield (GY), including enhanced GY in dicot vs. cereal rotations, in two year vs. three year rotations, in first year wheat after any break crop, and in rotation with faba bean vs. rapeseed. Interactions among cropping sequences and N and P application were also significant. Response to N was markedly reduced in two year rotations with any break crop, in first year wheat after any break crop, and after faba bean, in particular. Conversely, P response was occasionally enhanced in two year rotations and in the first wheat crop after any break crop, and in dicot-based rotations, particularly with faba bean. Presumably, this enhancement was the result of simultaneous improvement in soil N status and a reduction in wheat root pathogen and grass weed populations in these cropping sequences. Across all fertilizer and seed price scenarios considered in the economic analysis, the faba bean-wheat 3 year rotation (with an annual application of 60 kg N/ha) was economically optimal at Kulumsa; however, this recommendation may have to be modified to minimize the anticipated long-term impact of mining of soil P. In the drier environment at Asasa, the faba bean-wheat 3 year rotation (with an annual application of 30 kg N and 20 kg P/ha) was economically optimal. Alternate recommendations are discussed for farmers with lower levels of cash to invest in crop production.
English
0007|AGRIS 0101|R99-00CIMPU|AL-Wheat Program|AL-Economics Program
Jose Juan Caballero
CIMMYT Publications Collection