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Farmers’ knowledge helps develop practically applicable site-specific fertilizer rate recommendations for improving yield and grain quality of malt barley
Journal of Plant Nutrition ( IF 1.6 ) Pub Date : 2020-05-27 , DOI: 10.1080/01904167.2020.1771575
Adamu Molla 1
Affiliation  

Abstract Many participatory research works in Ethiopia and elsewhere proved that peasant farmers can classify soils according to their fertility/productivity status but these studies did not use this knowledge for developing practically applicable site-specific fertilizer rate recommendations. Experiment comprising factorial combinations of four levels of nitrogen (N) (0, 60, 120, and 180 kg ha−1) and two contrasting malt barley varieties (V1 = Miscal-21 versus V2 = Holker) was conducted on 10 sites representing soils of less fertility/less productivity (S1) and fertile/productive (S2) according to farmers’ classification in 2010–2012. The objectives were to confirm and use farmers’ knowledge for developing practically applicable site specific N fertilizer rate recommendations; and generate information for developing malt barley varieties with lower grain protein accumulation and higher productivity in higher N application rates. The results revealed that farmers knowledge could be used to develop practically applicable site-specific fertilizer rate recommendations. Therefore, applications of 110.5, 45.0, 137.5 and 110.5 kg N ha−1 in S1V1, S2V1, S1V2 and S2V2, respectively, are suggested for production of malt barley having 11.85% dry grain protein content with the relative higher productivity in the highlands of Ethiopia. Results also revealed that there is opportunity to develop malt barley varieties with lower grain N accumulation and higher productivity in higher N rates.

中文翻译:

农民的知识有助于制定切实可行的特定地点施肥量建议,以提高麦芽大麦的产量和谷物质量

摘要 埃塞俄比亚和其他地方的许多参与性研究工作证明,农民可以根据其肥力/生产力状况对土壤进行分类,但这些研究并未利用这些知识来制定实际适用的特定地点施肥率建议。在代表土壤的 10 个地点进行了包含四种氮 (N) 水平(0、60、120 和 180 kg ha-1)和两种对比麦芽大麦品种(V1 = Miscal-21 与 V2 = Holker)的因子组合的实验根据 2010-2012 年农民的分类,较低的生育率/较低的生产力(S1)和肥沃的/生产力(S2)。目标是确认和利用农民的知识来制定实际适用的特定地点的氮肥施用量建议;并为开发具有较低谷物蛋白质积累和较高产量的麦芽大麦品种提供信息。结果表明,农民的知识可用于制定实际适用的特定地点施肥率建议。因此,建议在 S1V1、S2V1、S1V2 和 S2V2 中分别施用 110.5、45.0、137.5 和 110.5 kg N ha-1,用于生产干粒蛋白质含量为 11.85% 的麦芽大麦,并且在高地具有较高的生产力。埃塞俄比亚。结果还表明,有机会在较高的氮含量下开发具有较低谷物氮积累和较高生产力的麦芽大麦品种。结果表明,农民的知识可用于制定实际适用的特定地点施肥率建议。因此,建议在 S1V1、S2V1、S1V2 和 S2V2 中分别施用 110.5、45.0、137.5 和 110.5 kg N ha-1,用于生产干粒蛋白质含量为 11.85% 的麦芽大麦,并且在高地具有较高的生产力。埃塞俄比亚。结果还表明,有机会在较高的氮含量下开发具有较低谷物氮积累和较高生产力的麦芽大麦品种。结果表明,农民的知识可用于制定实际适用的特定地点施肥率建议。因此,建议在 S1V1、S2V1、S1V2 和 S2V2 中分别施用 110.5、45.0、137.5 和 110.5 kg N ha-1,用于生产干粒蛋白质含量为 11.85% 的麦芽大麦,并且在高地具有较高的生产力。埃塞俄比亚。结果还表明,有机会在较高的氮含量下开发具有较低谷物氮积累和较高生产力的麦芽大麦品种。85%的干粮蛋白质含量,在埃塞俄比亚高地生产力相对较高。结果还表明,有机会在较高的氮含量下开发具有较低谷物氮积累和较高生产力的麦芽大麦品种。85%的干粮蛋白质含量,在埃塞俄比亚高地生产力相对较高。结果还表明,有机会在较高的氮含量下开发具有较低谷物氮积累和较高生产力的麦芽大麦品种。
更新日期:2020-05-27
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