Skip to content
J

Johnson M. R. Semoka

Publications (4)

Assessment of Soil Fertility Status for Bambara Groundnut Production in South-eastern Tanzania

John J. Tenga, Johnson M. R. Semoka, Ernest Semu & Balthazar M. Msanya · International Journal of Plant & Soil Science · 2018

Intensive farming practised in the agro-ecological zones of Makonde plateau (C2) and Inland plain (E5) of south-eastern Tanzania without proper soil management has led to nutrient depletion. The objective of the study was to assess the fertility status of soils in Bambara groundn...

Open access Research Article 10.9734/IJPSS/2018/41970

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