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<p>The aim of the study was to dissect the effects of stratified fertilization on peanut (<i>Arachis hypogaea</i> L.) growth, yield and seed quality. A 3-year field experiment was conducted with none (N), double (D), and treble (T)-stratified fertilization patterns and 100%, 90%, and 80% of the fertilizer application amounts were also generated. Double (DS100) and treble-stratified (TS100) fertilization significantly increased the peanut pod yield by 15.56 and 19.05%, respectively, compared with non-stratified fertilization (NS). Meanwhile, DS100 and TS100 significantly increased the total protein content and the oleic acid/linoleic acid (O/L) in peanut seed, which was associated with the elevation of oleic acid and reduction of linoleic acid. In addition, the plant total biomass, SPAD value, leaf photosynthetic rate, activities of antioxidant enzymes, as well as the activities of sucrose synthase, sucrose phosphate synthase, nitrate reductase, and glutamine synthetase were dramatically increased by DS100 and TS100. Notably, 90% and 80% of the fertilizer application partially abolished the beneficial effects of DS100 and TS100 in boosting peanut yield but they still exhibited higher yields and seed quality compared with NS, suggesting that stratified fertilization compensated the side effects of fertilization application reduction. We advocate that double and treble-stratified fertilization could enhance the photosynthesis, coordinate the antioxidant system, and modulate enzyme activities related to carbon and nitrogen metabolisms. This promising technique could be utilized to increase pod yield for peanut growers. Meanwhile, the enhancement of seed O/L could help to extend the oil’s storage period for peanut industry.</p>

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Stratified Fertilization Increases Peanut Yield and Quality by Enhancing Photosynthesis and Modulating Antioxidative, Carbon and Nitrogen Metabolic Enzymes

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • Tong Si,
  • Jinhao Lu,
  • Zhaojun Liang,
  • Jie Kong,
  • Xiaona Yu,
  • Xiaojun Zhang,
  • Xiaoxia Zou

摘要

The aim of the study was to dissect the effects of stratified fertilization on peanut (Arachis hypogaea L.) growth, yield and seed quality. A 3-year field experiment was conducted with none (N), double (D), and treble (T)-stratified fertilization patterns and 100%, 90%, and 80% of the fertilizer application amounts were also generated. Double (DS100) and treble-stratified (TS100) fertilization significantly increased the peanut pod yield by 15.56 and 19.05%, respectively, compared with non-stratified fertilization (NS). Meanwhile, DS100 and TS100 significantly increased the total protein content and the oleic acid/linoleic acid (O/L) in peanut seed, which was associated with the elevation of oleic acid and reduction of linoleic acid. In addition, the plant total biomass, SPAD value, leaf photosynthetic rate, activities of antioxidant enzymes, as well as the activities of sucrose synthase, sucrose phosphate synthase, nitrate reductase, and glutamine synthetase were dramatically increased by DS100 and TS100. Notably, 90% and 80% of the fertilizer application partially abolished the beneficial effects of DS100 and TS100 in boosting peanut yield but they still exhibited higher yields and seed quality compared with NS, suggesting that stratified fertilization compensated the side effects of fertilization application reduction. We advocate that double and treble-stratified fertilization could enhance the photosynthesis, coordinate the antioxidant system, and modulate enzyme activities related to carbon and nitrogen metabolisms. This promising technique could be utilized to increase pod yield for peanut growers. Meanwhile, the enhancement of seed O/L could help to extend the oil’s storage period for peanut industry.