Mengie Yechale, Assefa Alemayehu, Jenber Abaynew Jemal
Adet Agricultural Research Center, Adet, P.O.Box 08, Bahir Dar, Ethiopia.
AmharaRegional Agricultural Research Institute, Bahir Dar, P.O.Box 527, Bahir Dar, Ethiopia.
Heliyon. 2021 Mar 20;7(3):e06519. doi: 10.1016/j.heliyon.2021.e06519. eCollection 2021 Mar.
Tef is one of the most important staple cereal crops in Ethiopia. However, the production and productivity of the crop remain low due to lack of appropriate agronomic recommendations. Lack of optimum sowing methods and seed rates are key agronomic factors limit the productivities of the crop. Hence, field experiment was conducted to study the effects of seed rates and sowing methods on growth, yield and yield components of tef. The treatments contains factorial combination of two sowing methods (row and broadcast) and five seeding rates (5, 7.5,10, 12.5, and 15 kg hain randomized factorial complete block design with three replications. Days to heading, days to maturity, plant height, spike length, total number of tiller, total number of effective tiller, above ground dry biomass yield, grain yield and straw yield collected and subjected to analysis of variance using SAS system. The main effect seed rate significantly affect days to physiological maturity, plant height, panicle length, and straw yield and the maximum values of these parameters were recorded at the seed rate of 5 kg ha. Similarly, number of total tillers, fertile tillers, total biomass, grain yield, and lodging percent were significantly (p < 0.05) influenced by interaction effect of sowing methods and seeding rates. The highest grain yield (2.301 kg/ha) and other growth parameters recorded at the interaction effect of 5 kg ha of seed rate and row planting method compared to other treatments. Maximum net benefit (795,689.21ETB) with acceptable marginal rate of return (104.32) also recorded at the interaction effect of 5 kg ha of seeding rate and row planting. Hence, 5 kg ha seed rate with row planting method could be recommended for maximum yield of tef in Adet soil and climatic conditions.
画眉草是埃塞俄比亚最重要的主粮谷类作物之一。然而，由于缺乏合适的农艺建议，该作物的产量和生产率仍然很低。缺乏最佳播种方法和播种量是限制该作物生产率的关键农艺因素。因此，开展了田间试验，以研究播种量和播种方法对画眉草生长、产量及产量构成因素的影响。试验处理包括两种播种方法（条播和撒播）与五种播种量（5、7.5、10、12.5和15千克/公顷）的析因组合，采用随机析因完全区组设计，重复三次。记录抽穗天数、成熟天数、株高、穗长、总分蘖数、有效分蘖总数、地上部干生物量产量、籽粒产量和秸秆产量，并使用SAS系统进行方差分析。播种量的主效显著影响生理成熟天数、株高、穗长和秸秆产量，这些参数的最大值出现在播种量为5千克/公顷时。同样，播种方法和播种量的交互效应显著（p<0.05）影响总分蘖数、有效分蘖数、总生物量、籽粒产量和倒伏率。与其他处理相比，在播种量为5千克/公顷和条播种植方法的交互效应下，籽粒产量最高（2.301千克/公顷），其他生长参数也最高。在播种量为5千克/公顷和条播种植的交互效应下，还获得了最大净收益（795,689.21埃塞俄比亚比尔）和可接受的边际收益率（104.32）。因此，在阿代特的土壤和气候条件下，对于获得画眉草的最高产量，推荐采用条播种植方法和5千克/公顷的播种量。
