Background Adequate phosphorus (P) and foliar zinc (Zn) in groundnut required for obtaining Zn-enriched grain and optimum yield. However, it was very low in the area. Due to that objective of the study was to investigate the response of groundnut genotypes to combined application of phosphorus and zinc on yield and nutritional contents. A field experiment was conducted at Sheka-Tekli in 2017/18 cropping season. Methods The treatments were consisted of three groundnut genotypes (ICGV00308, ICGV91114 and Sedi) as main plot and four combined PZn fertilizer levels (00), 10 kg P/ha + 0.50 g Zn/L, 20 kg P/ha + 1 g Zn/L and 30 kg P/ha + 1.5 g Zn/L as sub plot were assigned in split plot design with tree replications. Result The result indicated that yield and yield components respond significantly to the main and interaction effects. The highest significant seed yield (2529 kg/ha) and protein content (37.79%) were obtained in response to the application of P 30 Zn 1.5 fertilizer on sedi variety in the loamy sand soil. The percentage of crude protein and fat content had significantly affected by interaction components. Most of the yield component traits showed strong positive correlation with seed yield. While the lowest seed yield was recorded from ICGV00308 without fertilizer. The highest fat content (43.95%) was gained from genotype ICGV00308 at P 30 Zn 1.5 fertilizer. From the interaction of sedi with P 30 Zn 1.5 fertilizer was recorded highest protein content. Based on economic analysis the highest MRR (380.58%) was obtained from ICGV00308 genotype at P 10 Zn 0.5 fertilizer. Conclusion From the result of the study, application of PZn fertilizer increases seed yield of groundnut. Therefore, based on the MRR result ICGV00308 genotype at P 10 Zn 0.5 fertilizer was optimum for groundnut production in the study area and similar agro-ecologies.

中文翻译：

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埃塞俄比亚中部提格雷地区花生 (Arachis hypogaea L.) 基因型对磷肥和叶面锌肥复合施用的响应

背景 花生中充足的磷 (P) 和叶面锌 (Zn) 是获得富含锌的谷物和最佳产量所必需的。但是，该地区的价格非常低。由于该研究的目的是调查花生基因型对磷和锌的联合施用对产量和营养含量的响应。2017/18 作物季节在 Sheka-Tekli 进行了田间试验。方法 以3个花生基因型（ICGV00308、ICGV91114和Sedi）为主小区，4个磷锌复合肥水平（00），10 kg P/ha+0.50 g Zn/L，20 kg P/ha+1 g Zn /L 和 30 kg P/ha + 1.5 g Zn/L 作为子区在裂区设计中分配树重复。结果 结果表明，产量和产量成分对主效应和交互作用响应显着。在肥沃的沙质土壤中，对 Sedi 品种施用 P 30 Zn 1.5 肥料可获得最高的显着种子产量 (2529 kg/ha) 和蛋白质含量 (37.79%)。粗蛋白和脂肪含量的百分比受相互作用成分的影响显着。大多数产量成分性状与种子产量呈强正相关。而在没有施肥的情况下，ICGV00308 记录的种子产量最低。在 P 30 Zn 1.5 肥料下，基因型 ICGV00308 的脂肪含量最高 (43.95%)。从 sedi 与 P 30 Zn 1.5 肥料的相互作用记录到最高的蛋白质含量。根据经济分析，最高 MRR (380.58%) 来自 ICGV00308 基因型在 P 10 Zn 0.5 肥料。结论 从研究结果来看，施用PZn肥可提高花生的种子产量。因此，根据 MRR 结果，ICGV00308 基因型在 P 10 Zn 0.5 肥料下是研究区和类似农业生态区花生生产的最佳选择。