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<p>A decline in soil fertility is the major factor for global food production. Determining the extent of plant nutrient deficiencies for a given crop, soil, and environment is key to nutrient management. Thus, this experiment was initiated to investigate the yield-limiting plant nutrients for maize productivity in North West Ethiopia. It was arranged in a randomized complete block design with three replications. The treatments were comprised of omitting N (All-N), P (All-P), K (All-K), S (All-S), B (All-B), and Zn (All-Zn) nutrients. Then, NPKSZnB (All), recommended NP (RNP), no fertilizer (NF), and recommended NP with S (RNP + Sx1) treatments were included. The application of different nutrient kinds significantly (<i>p</i> ≤ 0.001) affected grain yield. The highest grain yield (7.1 t ha<sup>− 1</sup>) was achieved from the treatment that received N and P nutrients. While the omission of KSZnB nutrients had no discernible effect as compared to NP nutrients. The lowest grain yield (1.3 t ha<sup>− 1</sup>) was recorded from the no-fertilized treatment, followed by N omitted treatment (1.4 t ha<sup>− 1</sup>). Without N nutrient application, grain yield was decreased by 29–80%, while the absence of P decreased grain yield by 5–40%. Therefore, N, followed by P nutrients, is the most yield-limiting nutrient for maize productivity in Ethiopian soils. So, optimizing the rate of yield-limiting nutrients is required for judicious use of fertilizers and contributes to food systems. We suggest a timely assessment of the inherent nutrient-supplying capacity of soils for fertilizer addition to improve crop productivity and environmental sustainability.</p>

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Diagnosing plant nutrient deficiencies for maize (Zea mays) yield under mixed farming systems of Northwest Ethiopia

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月20日

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  • Zerfu Bazie,
  • Erkihun Alemu,
  • Tadele Amare,
  • Bitewelegn Kerebeh,
  • Abere Tenagn,
  • Abrham Awoke,
  • Zmie Ambaw,
  • Zelalem Addise,
  • Beamlaku Alemayehu,
  • Anteneh Abewa,
  • Ataklte Abebe,
  • Desalegn Getaneh,
  • Tesfaye Feyisa,
  • Dires Tewabe,
  • Alebachew Enyew

摘要

A decline in soil fertility is the major factor for global food production. Determining the extent of plant nutrient deficiencies for a given crop, soil, and environment is key to nutrient management. Thus, this experiment was initiated to investigate the yield-limiting plant nutrients for maize productivity in North West Ethiopia. It was arranged in a randomized complete block design with three replications. The treatments were comprised of omitting N (All-N), P (All-P), K (All-K), S (All-S), B (All-B), and Zn (All-Zn) nutrients. Then, NPKSZnB (All), recommended NP (RNP), no fertilizer (NF), and recommended NP with S (RNP + Sx1) treatments were included. The application of different nutrient kinds significantly (p ≤ 0.001) affected grain yield. The highest grain yield (7.1 t ha− 1) was achieved from the treatment that received N and P nutrients. While the omission of KSZnB nutrients had no discernible effect as compared to NP nutrients. The lowest grain yield (1.3 t ha− 1) was recorded from the no-fertilized treatment, followed by N omitted treatment (1.4 t ha− 1). Without N nutrient application, grain yield was decreased by 29–80%, while the absence of P decreased grain yield by 5–40%. Therefore, N, followed by P nutrients, is the most yield-limiting nutrient for maize productivity in Ethiopian soils. So, optimizing the rate of yield-limiting nutrients is required for judicious use of fertilizers and contributes to food systems. We suggest a timely assessment of the inherent nutrient-supplying capacity of soils for fertilizer addition to improve crop productivity and environmental sustainability.