影响春季死亡点流行病的环境和发育因素
W J Hutchens1, C A Henderson1, C M Straw2
1School of Plant and Environmental Sciences, Virginia Polytechnic Institute, 675 Old Glade Road, Blacksburg, VA 24060.
Phytopathology
|June 19, 2023
概括
春季死斑 (SDS) 是一种草草病. 诸如土壤pH值和草深度之类的性因素可以影响SDS流行病,但在本研究中没有任何单一因素与其发生有着一致的联系.
科学领域:
- 植物病理学 植物病理学
- 土壤科学 土壤科学
- 草皮草管理 草皮草管理
背景情况:
- 由*Ophiosphaerella* spp.引起的春季死斑 (SDS) 在冬季休眠期间影响温暖季节的草草.
- 驱动SDS流行病的特定土壤 (化) 因素尚未得到充分理解.
研究的目的:
- 调查"TifSport"杂交百慕大草中形因素和SDS发展之间的关系.
- 确定影响高尔夫球场球道SDS强度的关键土壤条件.
主要方法:
- 无人机的空中图像被用来绘制SDS强度区域 (低,中等,高).
- 土壤样本,坚固度,草深度和有机物被测量在120块土地上,遍布四个场地.
- 多变量相关性和逐步回归分析确定了影响性因素.
主要成果:
- 与增加的SDS相关的EDAPHIC因素在fairways和年之间有显著差异.
- 在某些情况下,土壤pH值和草深度被确定为SDS的潜在预测因素.
- 没有一个单一的性因素在所有疾病中与SDS发生有一致的相关性.
结论:
- 这项基础研究突出了SDS发展中的性因素的复杂和可变性质.
- 结果为未来的研究提供了基础,以更好地预测和管理SDS流行病.
- 了解这些关系可以引导针对草健康的有针对性的管理策略.
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