Riegel C, Noe J P
Department of Plant Pathology, University of Georgia, Athens 30602.
Plant Dis. 2000 Dec;84(12):1275-1281. doi: 10.1094/PDIS.2000.84.12.1275.
The effects of chicken litter incorporated 28, 14, and 0 days before planting on Meloidogyne incognita in cotton and soil organisms were determined in the greenhouse. Treatments consisted of field soil amended with litter at rates of 0, 0.125, 0.25, 0.5, and 1% by weight. At 45 and 90 days after planting, numbers of M. incognita decreased as rates of litter increased. Microbivorous nematode densities increased as litter rates increased only in the first experiment. Plant growth increased as litter rates increased, regardless of when the litter was incorporated, or the presence or absence of M. incognita. Bacterial and fungal CFU fluctuated during both experiments, but generally had positive linear relationships with litter rate. Population densities of M. incognita decreased with increasing bacterial and fungal counts in amended soil. Bacterial genera identified from the litter-amended soil included Arthrobacter, Bacillus, Cellulomonas, Mi-crococcus, Pseudomonas, and Rhodococcus.
在温室中测定了在种植前28天、14天和0天施入鸡粪对棉花中南方根结线虫及土壤生物的影响。处理包括按重量比0%、0.125%、0.25%、0.5%和1%用鸡粪改良的田间土壤。种植后45天和90天，南方根结线虫的数量随着鸡粪施用量的增加而减少。仅在第一个实验中，食微生物线虫密度随着鸡粪施用量的增加而增加。无论鸡粪何时施入，也无论南方根结线虫是否存在，植物生长都随着鸡粪施用量的增加而增加。在两个实验中，细菌和真菌的菌落形成单位（CFU）都有波动，但总体上与鸡粪施用量呈正线性关系。在改良土壤中，南方根结线虫的种群密度随着细菌和真菌数量的增加而降低。从鸡粪改良土壤中鉴定出的细菌属包括节杆菌属、芽孢杆菌属、纤维单胞菌属、微球菌属、假单胞菌属和红球菌属。
