Scholarlink

<p>Pearl millet is the principal staple food crop for many smallholder farmers in semi-arid North-Central Namibia, where production is predominantly rainfed and grain yields remain low partly because of limited agronomic management information. This study evaluated the effects of nitrogen fertilizer rate and plant population on pearl millet yield components and grain yield under field conditions at the University of Namibia, Ogongo Campus. The experiment was laid out in a split-plot design with three replications. Nitrogen fertilizer rate was assigned to the main plots at two levels, 0 and 60&#xa0;kg N ha⁻¹, while plant population was assigned to the subplots at nine levels ranging from 22,222 to 133,333 plants ha⁻¹. Yield components and grain yield data were subjected to parametric analysis of variance. The interaction between nitrogen fertilizer rate and plant population was significant for panicle weight. The combination of 60&#xa0;kg N ha⁻¹ and 133,333 plants ha⁻¹ produced the highest panicle weight of 2.25 t ha⁻¹, whereas the lowest value of 0.39 t ha⁻¹ was recorded under 0&#xa0;kg N ha⁻¹ and 44,444 plants ha⁻¹. Under nitrogen application, grain yield was positively correlated with panicle weight and shoot biomass, indicating that improved vegetative growth and reproductive development contributed to yield enhancement. The findings suggest that applying 60&#xa0;kg N ha⁻¹ in combination with a plant population of 133,333 plants ha⁻¹ may improve pearl millet productivity among farmers in North-Central Namibia.</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

Effects of plant population and nitrogen fertilizer on yield and yield components of pearl millet (Pennisetum glaucum L.) in North-Central Namibia

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月3日

查看全文
  • Anna Maria Haufiku,
  • Simon Kamwele Awala,
  • Bertha Mudamburi,
  • Maliata Athon Wanga,
  • Johanna Shekupe Valombola,
  • Samuel Chibuike Chukwu,
  • Kudakwashe Hove

摘要

Pearl millet is the principal staple food crop for many smallholder farmers in semi-arid North-Central Namibia, where production is predominantly rainfed and grain yields remain low partly because of limited agronomic management information. This study evaluated the effects of nitrogen fertilizer rate and plant population on pearl millet yield components and grain yield under field conditions at the University of Namibia, Ogongo Campus. The experiment was laid out in a split-plot design with three replications. Nitrogen fertilizer rate was assigned to the main plots at two levels, 0 and 60 kg N ha⁻¹, while plant population was assigned to the subplots at nine levels ranging from 22,222 to 133,333 plants ha⁻¹. Yield components and grain yield data were subjected to parametric analysis of variance. The interaction between nitrogen fertilizer rate and plant population was significant for panicle weight. The combination of 60 kg N ha⁻¹ and 133,333 plants ha⁻¹ produced the highest panicle weight of 2.25 t ha⁻¹, whereas the lowest value of 0.39 t ha⁻¹ was recorded under 0 kg N ha⁻¹ and 44,444 plants ha⁻¹. Under nitrogen application, grain yield was positively correlated with panicle weight and shoot biomass, indicating that improved vegetative growth and reproductive development contributed to yield enhancement. The findings suggest that applying 60 kg N ha⁻¹ in combination with a plant population of 133,333 plants ha⁻¹ may improve pearl millet productivity among farmers in North-Central Namibia.