Teressa Dejene, Kibret Kibebew, Dechasa Nigussie, Wogi Lemma
School of Natural Resources Management and Environmental Sciences, Haramaya University, Ethiopia.
School of Plant Sciences, Haramaya University, Ethiopia.
Heliyon. 2024 Aug 3;10(16):e35784. doi: 10.1016/j.heliyon.2024.e35784. eCollection 2024 Aug 30.
The deteriorating state of soil fertility and low agricultural productivity in Ethiopia can be traced to the lack of equivalent consideration given to the soil's biological, chemical, and physical properties. A pot experiment was conducted to investigate the effect of mixed manure and blended nitrogen, phosphorus, sulfur and boron (NPSB) fertilizer on phosphorus adsorption, and other properties of Vertisols, nutrient uptake, and growth performance of maize. The study findings indicate that the combined application of mixed manure and blended NPSB significantly reduced soil pH from 7.87 to 7.68, phosphorus adsorption efficiency from 93 to 88.5 %, and Freundlich adsorption capacity from 194 to 100.75 mg kg , intensity from 1.96 to 1.27 compared to control. However, combined application of these two treatments significantly increased the organic carbon from 0.81 to 1.64 %, total nitrogen from 0.04 to 0.13 %, and available phosphorus from 6.96 to 73.82 g kg. The study further revealed that mixed manure and blended NPSB resulted in significantly (p ≤ 0.05) higher contents of nitrogen and phosphorus in the maize leaves as well as their uptake compared to their sole application and control. The highest values of these parameters were observed in plots treated with a combined application of 15 t ha mixed manure with each rate of 100 and 150 kg ha blended NPSB. Additionally, the maize plant height (p ≤ 0.05) and above-ground biomass (p ≤ 0.01) also exhibited significant increase. Compared to the control and full dose of NPSB, all the treatments that received a combined application of 15 t ha mixed manure with blended NPSB ranging from 50 to 150 kg ha resulted in significantly higher above-ground biomass of maize. The results suggest that the combined use of mixed manure and blended NPSB could be a practical and effective approach to improve soil properties and maize above-ground biomass yield.
埃塞俄比亚土壤肥力不断恶化以及农业生产率低下的状况可归因于未对土壤的生物、化学和物理性质给予同等重视。开展了一项盆栽试验，以研究混合肥料和氮磷硫硼（NPSB）混合肥料对磷吸附、变性土的其他性质、养分吸收及玉米生长性能的影响。研究结果表明，与对照相比，混合肥料和NPSB混合肥料的联合施用显著降低了土壤pH值，从7.87降至7.68，磷吸附效率从93%降至88.5%，弗罗因德利希吸附容量从194降至100.75毫克/千克，强度从1.96降至1.27。然而，这两种处理的联合施用显著提高了有机碳含量，从0.81%提高到1.64%，全氮含量从0.04%提高到0.13%，有效磷含量从6.96克/千克提高到73.82克/千克。该研究进一步表明，与单独施用和对照相比，混合肥料和NPSB混合肥料显著（p≤0.05）提高了玉米叶片中氮和磷的含量及其吸收量。在施用15吨/公顷混合肥料与100和150千克/公顷的各施用量NPSB混合肥料的地块中，观察到这些参数的最高值。此外，玉米株高（p≤0.05）和地上生物量（p≤0.01）也显著增加。与对照和全量NPSB相比，所有施用15吨/公顷混合肥料与50至150千克/公顷NPSB混合肥料的处理均显著提高了玉米地上生物量。结果表明，混合肥料和NPSB混合肥料的联合使用可能是改善土壤性质和玉米地上生物量产量的一种切实有效的方法。
