Scholarlink

<p>Potato (<i>Solanum tuberosum</i> L.) production in Kenya’s acidic highland soils is constrained by low nutrient availability, nutrient fixation, and poor fertilizer recovery, which limit crop productivity. Integrated nutrient management combining organic and inorganic nutrient sources offers potential for improving nutrient use efficiency (NUE) and sustaining soil fertility. This study evaluated the effects of organic manure (farmyard manure, FYM), diammonium phosphate (DAP), NPK fertilizer, and lime on nitrogen (N), phosphorus (P), and potassium (K) use efficiency of potato under acidic Nitisols in Nakuru County, Kenya. Field experiments were conducted during the 2024 short rains and 2025 long rains using a randomized complete block design with nine treatments replicated three times. Nutrient uptake, agronomic efficiency (AE), physiological efficiency (PE), apparent recovery efficiency (ARE), partial factor productivity (PFP), internal efficiency (IE), and marketable tuber yield were assessed. Integrated OM + NPK recorded the highest nutrient uptake and NUE indices compared with sole fertilizer or lime applications. The treatment also produced the highest marketable tuber yield (62.0 t ha⁻<sup>1</sup>), representing a 108.6% increase over the control. Seasonal effects significantly influenced nutrient uptake and NUE responses, with generally higher values observed during the long rains season. The results suggest that integrating farmyard manure with mineral fertilizers can improve nutrient recovery, nutrient use efficiency, and potato productivity under acidic highland conditions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Combined Effects of Organic and Inorganic Fertilizer Sources on Nutrient (N, P, and K) Use Efficiency of Potato (Solanum tuberosum L.)

  • 期刊论文

  • 发表日期：

    2026年7月20日

查看全文
  • Emmanuel R. Mwakidoshi,
  • Mekhled M. Alenazi,
  • Catherine Muui,
  • Esther M. Muindi,
  • Sagar Maitra,
  • Majed Alotaibi,
  • Nawab Ali,
  • Harun I. Gitari,
  • Mahmoud F. Seleiman

摘要

Potato (Solanum tuberosum L.) production in Kenya’s acidic highland soils is constrained by low nutrient availability, nutrient fixation, and poor fertilizer recovery, which limit crop productivity. Integrated nutrient management combining organic and inorganic nutrient sources offers potential for improving nutrient use efficiency (NUE) and sustaining soil fertility. This study evaluated the effects of organic manure (farmyard manure, FYM), diammonium phosphate (DAP), NPK fertilizer, and lime on nitrogen (N), phosphorus (P), and potassium (K) use efficiency of potato under acidic Nitisols in Nakuru County, Kenya. Field experiments were conducted during the 2024 short rains and 2025 long rains using a randomized complete block design with nine treatments replicated three times. Nutrient uptake, agronomic efficiency (AE), physiological efficiency (PE), apparent recovery efficiency (ARE), partial factor productivity (PFP), internal efficiency (IE), and marketable tuber yield were assessed. Integrated OM + NPK recorded the highest nutrient uptake and NUE indices compared with sole fertilizer or lime applications. The treatment also produced the highest marketable tuber yield (62.0 t ha⁻1), representing a 108.6% increase over the control. Seasonal effects significantly influenced nutrient uptake and NUE responses, with generally higher values observed during the long rains season. The results suggest that integrating farmyard manure with mineral fertilizers can improve nutrient recovery, nutrient use efficiency, and potato productivity under acidic highland conditions.