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Updated: Jun 20, 2025

Evaluating Dryocosmus Kuriphilus-induced Damage on Castanea Sativa

Evaluating Dryocosmus Kuriphilus-induced Damage on Castanea Sativa

Published on: August 30, 2018

树的树皮强度与对冲剪除方法的关系

Clive H Bock¹, David I Shapiro-Ilan¹, Michael W Hotchkiss¹

¹Southeastern Fruit and Tree Nut Research Station, USDA-ARS, Byron, GA.

|July 19, 2024

概括

高于15米的花生树可以改善杀菌剂喷雾覆盖面,可能减少花生 (由*Venturia effusa*引起). 然而,结果各不相同,一些实例显示,在砍伐的树木上,疾病的严重程度增加.

关键词:

这就是Carya illinoinensis.疾病管理疾病管理流行病学流行病学杀菌剂是一种杀菌剂.套期对冲套期对冲套期对冲

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Last Updated: Jun 20, 2025

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科学领域:

园艺园艺园艺园艺
植物病理学植物病理学
农业工程农业工程

背景情况:

由*Venturia effusa*引起的花生,是美国东南部花生生产的主要限制因素.
在高高的树木 (15-25米以上) 中,由于在实现足够的喷雾覆盖方面存在挑战,因此很难管理坚果.
围修剪是一种用于管理树木大小和结构的技术.

研究的目的:

评估对冲修剪对高高的核桃树皮发生率和严重性的影响.
为了确定子修剪是否可以提高杀菌剂喷雾覆盖率和有效性.
评估修剪时间 (冬季与夏季) 和强度对皮管理的影响.

主要方法:

在成熟的核桃树上进行了三次实地试验 (cvs. 理想的,斯图尔特,卡多) 的不同高度.
树木接受了不同的对冲修剪处理 (交替侧面,两侧,冬季与夏季修剪) 并与未修剪的对照进行了比较.
杀菌剂的应用均地使用空气喷雾器进行.
在三个生长季节 (2020-2022) 评估了发病率和严重程度,在不同的树冠高度,在3个生长季节 (2020-2022) 评估了树枝,树叶和果实.

主要成果:

在一个地点,与对照组相比,被修剪的树木在树叶和水果上表现出稍微更严重的.
在另一个地点,被修剪的树木在水果上的数量明显减少,水果的重度较低的频率更高.
在两个地点,的严重程度通常随着树冠的高度而增加.
修剪时间 (冬季与夏季) 在低疾病条件下没有显著影响的严重性.

结论:

对花生削对花生皮管理的好处可能会随着树木的高度而增加,这可能会改善较高树木 (>15米) 的喷雾覆盖面.
围修剪的有效性可以根据特定的果园条件和品种而有所不同.
需要进一步的研究,以优化对冲修剪策略,以实现综合性坚果皮管理.