Enhancing spray coverage in peanut canopies using prohexadione calcium

IF 3.3 4区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Agricultural & Environmental Letters Pub Date : 2026-07-15 DOI:10.1002/ael2.70085

Satinderpal Singh, Kulpreet Singh, Akash Shah, Anmoldeep Singh, Barry Tillman, Sudeep S. Sidhu, Hardeep Singh

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Abstract

Excessive vine growth in peanut (Arachis hypogaea L.) can limit fungicide spray penetration, reducing protection against foliar diseases. Prohexadione calcium suppresses vine growth and may improve spray distribution, but its effects on fungicide coverage in peanut remain unclear. A 2-year field study (2024–2025) was conducted at the West Florida Research and Education Center, Jay, FL, to evaluate prohexadione calcium applied at 75% and 100% of the labeled rate on plant height, specific leaf area (SLA), and spray coverage. Prohexadione calcium significantly reduced plant height and SLA, indicating a more compact canopy with thicker leaves. SLA declined from 14.6 to 12.2 cm² g⁻¹ at the 100% rate. Mid-canopy spray coverage increased at the 100% application rate, whereas lower canopy coverage was unaffected. These results demonstrate that prohexadione calcium can improve spray coverage in the peanut mid-canopy. Future research should investigate whether these changes lead to reduced disease severity and yield benefits.

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丙己二酮钙提高花生冠层喷雾覆盖率

花生（arachhis hypogaea L.）蔓生过度会限制杀菌剂喷雾的渗透，降低对叶面疾病的保护。丙己二酮钙抑制植株生长，可能改善喷雾分布，但对花生杀菌剂覆盖的影响尚不清楚。在佛罗里达州杰伊的西佛罗里达研究和教育中心进行了一项为期2年的实地研究（2024-2025），以评估75%和100%标记率施用prohexadione钙对株高、比叶面积（SLA）和喷雾覆盖率的影响。丙己二酮钙显著降低了株高和叶片密度，表明冠层更致密，叶片更厚。SLA以100%的速率从14.6下降到12.2 cm2 g−1。中冠层喷淋盖度在100%施用量下增加，而下冠层盖度不受影响。综上所述，预己二酮钙能提高花生冠层中部的喷淋覆盖率。未来的研究应该调查这些变化是否会降低疾病严重程度并产生益处。

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来源期刊

Agricultural & Environmental Letters Multiple-

CiteScore

3.70

自引率

3.80%

发文量