A. Gorfu

发表

On-farm Research to Derive Fertilizer Recommendations for Small-Scale Bread Wheat Production Methodological Issues and Technical Results

A. Taa, D. Tanner, W. Mwangi, 1991 .

The effect of crop rotation in two wheat production zones of Southeastern Ethiopia.

D. Tanner, A. Gorfu, 1990 .

Optimizing Fertilizer Use in Ethiopia Correlation of Soil Analysis with Fertilizer Response in Hetosa Wereda, Arsi Zone

T. Gebre, D. Tanner, M. Hassena, 2002 .

Recovery of 15N-Labelled Urea Applied to Wheat (Triticum aestivum L.) in the Ethiopian Highlands as Affected by P Fertilization

P. Vlek, D. Tanner, R. Kühne, 2003 .

Grain yield of barley as affected by cropping sequence and fertilizer application in southeastern Ethiopia

K. Girma, A. Taa, D. Tanner, 1997 .

The role of fertilizers and faba bean (Vicia faba) in sustaining production of cereals in different crop rotations in the southeastern Ethiopian highlands.

A. Gorfu, 1998 .

Fertiliser effects on sustainability in the wheat-based small-holder farming systems of southeastern Ethiopia

A. Taa, D. Tanner, A. Gorfu, 1993 .

Effect of crop rotation and fertilizer application on wheat yield performance across five years at two locations in south-eastern Ethiopia.

K. Girma, A. Taa, D. Tanner, 2000 .

Derivation of economic fertilizer recommendations for bread wheat in the Ethiopian highlands: on farm trials in the peasant sector.

M. Ginkel, E. Elias, Zewdu Yilma, 1990 .