Population dynamics of the sting nematode in California turfgrass
Population dynamics of the sting nematode in California turfgrass
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DOI：
10.1094/pdis.2000.84.10.1081
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发表时间：
2000-10-01
期刊：
影响因子：
4.5
通讯作者：
Becker, JO
中科院分区：
文献类型：
--
作者：
Bekal, S;Becker, JO
人口密度的Belonolaimus longicaudatus进行了监测，每月一次，在Tambirk乡村俱乐部高尔夫球场（1993年至1994年），并在安嫩堡庄园和荒岛高尔夫球场（1998年）。所有三个球场都位于加利福尼亚州科切拉谷的兰乔米拉奇。在取样区的百慕大草典型地表现出褪绿在4月初，当刺线虫种群开始增加。在塔穆罗克高尔夫球场，线虫种群密度在10月达到峰值，每100 cm 3土壤中有1000条线虫，但很快下降，12月出现最低密度，每100 cm 3土壤中约有50条线虫。在安嫩堡庄园和荒岛高尔夫球场，线虫种群密度在6月和7月达到峰值，但迅速下降到不到该密度的一半，可能是因为B。longicaudatus引起的宿主衰退。土壤温度和线虫密度的波动在所有地点显着相关。线虫的分布是最大的顶部15厘米的土壤中，除了在最热的夏季，当人口较高的深度为15至30厘米。
Population densities of Belonolaimus longicaudatus were monitored at monthly intervals at the Tamarisk country club golf course (1993 to 1994) and at the Annenburg Estates and Desert Island golf courses (1998). All three courses are located at Rancho Mirage, Coachella Valley, CA. The bermuda grass in the sampling area typically exhibited chlorosis at the beginning of April when the sting nematode populations began to increase. At the Tamarisk golf course, population density peaked in October, with 1.000 nematodes per 100 cm(3) of soil, but declined rapidly, with the lowest population density occurring in December with approximately 50 nematodes per 100 cm3 of soil. At the Annenburg Estates and Desert Island golf courses, the nematode population densities peaked in June and July but declined rapidly to less than half of that density, presumably because of B. longicaudatus-caused host decline. Soil temperature and fluctuation of nematode densities were significantly correlated at all locations. Nematode distribution was greatest in the top 15 cm of soil except during the hottest summer months, when the population was higher at depths of 15 to 30 cm.