Effect of Planting Techniques on Tef (Eragrostis tef) Yield and Yield Components
Issue:
Volume 11, Issue 4, August 2023
Pages:
87-90
Received:
28 July 2023
Accepted:
15 August 2023
Published:
28 August 2023
Abstract: Without a crop management cooperation, only genetically modified cultivars may not be able to overcome the crop's expected yield gap in any research. Tef grain yield is low as a result of inadequate management practices. The current study was conducted on the research field of the Holeta Agricultural Research Center during the main cropping seasons of 2021 and 2022 to evaluate the three planting/sowing methods (Broad casting, Row sowing, and transplanting) of improved Quncho tef variety by randomized complete block design with three replications for two consecutive years. This study revealed that there is no statistically significant difference between row planting and broadcasting at 5 and 25 kg/ha at row spacing of 15 and 20cm at 5kg, both row sowing and broadcasting gave highest grain yield than transplanting. Tef transplanting gave the lowest grain yield as well as straw in addition to high cost of labor. Row planting at a 15 cm spacing and 5 kg per ha seed and broadcast sowing at 5kg per ha were the most economically effective tef planting method according to this finding. However, it is advisable to undertake further research across soil type, years and locations to draw sound recommendation on a wider scale.
Abstract: Without a crop management cooperation, only genetically modified cultivars may not be able to overcome the crop's expected yield gap in any research. Tef grain yield is low as a result of inadequate management practices. The current study was conducted on the research field of the Holeta Agricultural Research Center during the main cropping seasons...
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Response of Newly Released Late Maturing Maize Variety to Nitrogen and Plant Population Density at Jimma, Southwestern Ethiopia
Sisay Gurmu,
Eshetu Yadete
Issue:
Volume 11, Issue 4, August 2023
Pages:
91-96
Received:
7 August 2023
Accepted:
29 August 2023
Published:
8 September 2023
Abstract: The study was performed at two sites around Jimma Agricultural Research Center (Melko) and Kersa districts, Jimma Zone, from 2017 up to 2019 main cropping seasons. Five Nitrogen fertilizer rates (69, 92, 115, 138 and 161 kg N ha-1), and four plant population densities (66,666 (75*20cm), 53,333 (75*25cm), 44,444 (75*30cm) and 62500plants ha-1(80*40cm two plants per hill)) were factorial combined and laid down in a randomized complete block design (RCBD) with three replications. Late maturing maize variety BH661was used. The analysis of variance showed that all parameters of maize were significantly affected (p<0.05) by the main effects of N fertilizer rates and plant population densities except plant height but the interaction effects of the two factors had not significant effect (p>0.05) on any of the measured parameters. The highest grain yield of 6.75 and 6.87 t ha-1 and above ground biomass yield of 15.36 and16.39 t ha-1, were obtained from the highest N fertilizer rate of 161 kg ha-1 and highest plant population density of 66,666 plants ha-1(75*20cm) respectively. This is due to the late maturing habit of the crop variety that highly responsive to the highest N rate. In conclusion, sensitivity analysis on coexisting changes in field prices of inputs and maize grain (±15%) showed that, N fertilizer rates are sensitive under prevailing market conditions and based the partial budget analysis, application of 161 N kg ha-1 gave the highest net benefit (41800.72 ETB ha-1) with acceptable marginal rate of return (MRR) (122.38%). Concerning main effect of plant population density 66,666plants ha-1 (75*20cm) gave the highest net benefit (47802.00 EtB ha-1) with acceptable MRR (688.32%). Therefore, for a late-maturing maize varieties application of 161 kg N ha-1(further research also needed because this treatment is sensitive to price fluctuation) with plant population density of 66,666 plant ha-1(75*20cm) recommended for farmer’s under rain fed condition at Melko and Kersa district, Jimma zone and other similar agro-ecology of the Southwest of Ethiopia.
Abstract: The study was performed at two sites around Jimma Agricultural Research Center (Melko) and Kersa districts, Jimma Zone, from 2017 up to 2019 main cropping seasons. Five Nitrogen fertilizer rates (69, 92, 115, 138 and 161 kg N ha-1), and four plant population densities (66,666 (75*20cm), 53,333 (75*25cm), 44,444 (75*30cm) and 62500plants ha-1(80*40c...
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