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Assefa Menna

Publications (6)

Cations and Related Soil Variables as the Basis for Nutrients Management Strategies in Central Ethiopian Agricultural Soils - I

Assefa Menna · International Journal of Plant & Soil Science · 2019

The study was aimed at assessing the fertility status of soils with special emphasis on cation “concepts” and related physico-chemical variables as decision-support tools in making fertilizer recommendations. Thirty six soil samples collected from three representative locations,...

Open access Research Article 10.9734/ijpss/2019/v29i630160

Assessment of Sulfur Deficiency in Soils through Plant Analysis in Three Representative Areas of the Central Highlands of Ethiopia-IV

Assefa Menna · Journal of Agriculture and Ecology Research International · 2017

Field survey was conducted in Arsi(Ar), East Shewa(ES) and Oromia Liuu(OL) zones in 2012-15 cropping seasons, aimed at assessing sulfur(S) status of soils through plant analysis. The general information on land-use, soil types, were collected using semi-structured questionnaire t...

Open access Research Article 10.9734/JAERI/2017/34287

Estimation of Optimum Rate of Sulfur for Application in Soils for Wheat Production in Ethiopia –III

Assefa Menna, Johnson M. R. Semoka, Tekalign Mamo & Nyambilila Amuri · Journal of Agriculture and Ecology Research International · 2016

Six on-farm experiments were conducted in 2013/2014 seasons, in the Central Highlands (CHLs) of Ethiopia, with the main aim of estimating optimum sulfur rate for wheat. The treatments were, 4-levels of S(S0 =0, S1 =5, S2 =10, and S3 =20 kg S/ha); 2-levels of N(N0 =0, N =N1 =69 kg...

Open access Research Article 10.9734/JAERI/2016/23550

Wheat Response to Applied Nitrogen, Sulfur, and Phosphorous in three Representative Areas of the Central Highlands of Ethiopia -I

Assefa Menna, Johnson M. R. Semoka, Nyambilila Amuri & Tekalign Mamo · International Journal of Plant & Soil Science · 2015

Eighteen explorative field experiments were conducted in 2012/2013 seasons in three representative areas in central highlands of Ethiopia, to evaluate the effects of sulfur (S) vis-à-vis nitrogen (N) and phosphorous (P) on wheat. Furthermore, an assessment was made on the status...

Open access Research Article 10.9734/IJPSS/2015/20055

Evaluation of Different Indices of Sulfur Availability in Soils for Wheat (Triticum aestivum L.) Production in Ethiopia –II

Assefa Menna, Nyambilila Amuri, Tekalign Mamo & Johnson M. R. Semoka · International Journal of Plant & Soil Science · 2015

Using high-analysis fertilizers lacking adventitious sulfur (S), coupled with traditional cropping-systems that mine S from native soil, leads to S deficiency. However, under field conditions, S deficiency symptoms are not easily identifiable in cereals, because they are mistaken...

Open access Research Article 10.9734/IJPSS/2015/20513