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

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Journal : Journal of Tropical Crop Science

 1 
Maximizing Bulb Yield and Quality of Onion (Allium Cepa L.) Through Agronomic Management of Phosphorus Fertilizer and Transplanting Date Under Irrigation in Alaba, Ethiopia. Anbes, Tilaye; Worku, Walelign; Beshir, Hussien Mohammed
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): 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.9.02.96-104

Abstract

Bulb yield and quality of the onion is constrained by a number of factors, including inappropriate transplanting age and poor fertilizer management practices. Therefore, a field experiment was conducted to determine the best transplanting date on quality, combined with phosphorus level, on onion yield of onion. The study was conducted at Alaba, Ethiopia, during 2018/19 season. The treatments consisted of four phosphorus levels, i.e., 0, 20, 40 and 60 kg.ha-1, and three transplanting dates, i.e., 42, 49 and 56 days, from sowing. The experiment was laid out in randomized complete block design with four replications. The result showed that transplanting date and phosphorus rate significantly affected bulb dry weight and marketable bulb yield which includes medium and large sized bulbs. Among these parameters, marketable bulb yield was also significantly affected by the interaction of transplanting date and phosphorus rate. In this study, onion fertilized with P at 60 kg.ha-1 transplanted at 56 days had the highest marketable bulb yield. The economic analysis revealed that the highest net benefit with the lowest cost of production was obtained from the application of P at 40 kg.ha-1 and the transplanting at 56 days. The marginal rate of return for this treatment was economically feasible for producing onion bulb in the districts.
Maximizing Seed Quality and Seed Yield of Bread Wheat (Tritium aestivum L.) Through Agronomic Management in Amhara Region, Northwestern Ethiopia Derebe, Bitwoded; Assefa, Alemayehu; Abate, Alemu; Anbes, Tilaye
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): 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.9.02.114-123

Abstract

A study was conducted to determine the optimum seed rate and row spacing on Kekeba bread wheat seed yield and quality performance at Adet and Wonberema, Ethiopia. The study consists of field experiments that were conducted at Adet Research Center and Wonberema farmer’s field during the 2018 and 2019 cropping seasons, and laboratory experiments at the Seed Science Laboratory at Adet Research Centre. A factorial combination of eight seed rates (75, 100,125, 150, 175, 200, 225, and 250 kg.ha-1) and two-row spacing (20 cm and 30 cm) was arranged in a randomized complete block design with three replications, and laboratory experiment in a complete randomized design with four replications. The results showed that the interaction effect of seed rate and row spacing was significantly (P<0.05) affected seed yield but had non-significant (P>0.05) on physical quality, physiological, and seedling vigor. Seed rate and row spacing had a significant (P<0.05) effect on standard germination, speed of germination, vigor index-I, and vigor index-II, but a pure seed was not significantly affected by the main effects and interaction. Based on the economic analysis at Adet, the maximum seed yield (4.4 t.ha-1) was obtained from a seed rate of 125 kg.ha-1 with 20 cm row spacing, and at Wonberema the maximum seed yield (3.26 or 3.17 t.ha-1) were obtained from a seed rate of 150 or 125 kg.ha-1 with 30 cm row spacing. Therefore, a seed rate of 125 kg.ha-1 with 20 cm row spacing was recommended at Adet, and at Wonberema seed rates of 150 and 125 kg.ha-1 with 30 cm row spacing was recommended for high seed yield and quality seed production as the 1st and the 2nd options, respectively.
Co-Authors Abate, Alemu Abebe, Dereje Asredie, Semagn Assefa, Alemayehu Beshir, Hussien Mohammed Chanie, Yematew Derebe, Bitwoded Elmihun, Melkamu Ewenetu, Wasihune Shibe, Belayneh Worku, Walelign