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All Journal Journal of Tropical Crop Science International Journal on Food, Agriculture and Natural Resources (IJFANRES)
Sisay, Kassa
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Agriculture, Biological Sciences & Forestry

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Journal : Journal of Tropical Crop Science

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Diagnostic Trials on Sorghum (Sorghum bicolor L. Moench) for Developing Site-specific Nutrient Management Practices in the Lowlands of Eastern Amhara, Ethiopia Teshome, Habtemariam; Adissie, Samuel; Sisay, Kassa; Hailu, Tadesse
Journal of Tropical Crop Science Vol. 12 No. 02 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.02.408-416

Abstract

Soil fertility heterogeneity significantly influences crop productivity and the effectiveness of nutrient management strategies. In Ethiopia, various types and sources of inorganic fertilizers are distributed to enhance crop production. Therefore, selecting appropriate fertilizers based on specific soil nutrient deficiencies is essential. A field experiment was conducted in Kobo using sorghum as the test crop to identify yield-limiting nutrients through crop response. The experiment employed a randomized complete block design with farmers’ fields serving as replications. Biological yield data were collected and analyzed using analysis of variance (ANOVA). When significant differences among treatments were detected, means were separated using the LSD test at P ≤ 0.05. Results showed that omitting nutrients from inorganic fertilizers, either individually or in combination, significantly reduced grain yield. The highest grain yield was achieved with the combined application of NPS (nitrogen, phosphorus, sulphur) fertilizer and farmyard manure (FYM). In contrast, the lowest yield occurred in the control treatment, where all nutrients were omitted. Biomass yield did not differ significantly between treatments across both years. The study indicates that applying farmyard manure in combination with inorganic fertilizers, such as NPS, NPSK (NPS + potassium), and NPSKZn (NPSK + Zinc), effectively meets the nutrient requirements of sorghum. Grain yield under nutrient omission treatments ranked as follows: NPS + FYM > NPS > NPSK > NPSKZn > NP > NS > PS > N > S > P. Among the nutrients tested, farmyard manure had the greatest impact on yield, followed by nitrogen, sulphur, and phosphorus fertilizers.
Teff and Wheat Yield Variation With Phosphorus Application In Jamma District, Ethiopia Teshome, Habtemariam; Sisay, Kassa; Degu, Adise; Wubu, Tesfaye; Hailu, Tadesse
Journal of Tropical Crop Science Vol. 10 No. 02 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.02.94-100

Abstract

Different plant species has different nutrient requirements and utilize nutrients in different ways. Biological activity contributes to P solubilization through mineralization, wheathering, and other physicochemical reactions so that the soil plow layer is the major source of soil availabile P for crops. Ethiopia Ministry of Agriculture and Natural Resource and ATA recommended six types of blended fertilizers (NPSZnB, NPKSB, NPKSZnB, NPSZn, NPSB and NPS) for the Amhara region. Our study was conducted in Jamma districts of eastern Amhara, Ethiopia, during 2018 cropping season to attest the yield of teff (Dega teff) and wheat (Danda’a) due to phosphorus fertilizer application. Fertilizer treatments tested were the recommended dose of N only, recommended dose of NP, 50 kg.ha-1 NPS, 100 kg.ha-1 NPS, and 150kg. ha-1 NPS, set up in a. randomized complete block design with three replication, and conducted on four sites. Our study demonstrated that applications of N and P fertilizers significantly improved grain yield of wheat and teff, and that there was significant yield differences (P < 0.05) between different rates of P fertilizer. Therefore, even though the soil P levels were shown to be sufficient, application of both N and P fertilizer in the Jamma district is essential to increase yield of teff and wheat.
Co-Authors Abate, Sisay Dessale Abere, Eyeberu Adisie, Samuel Adissie, Samuel Andre Andre, Andre Biyazen, Brihanu Degu, Adise Fenta, Tigabu Feyisa, Tesfaye Getnet, Abera Hailu, Tadesse Mihret, Tewabe Teshome, Habtemariam Tilahun, Gebeyaw Wubu, Tesfaye Yitayew, Asresu