Summary Soil treatments with formulated plant biomasses or waste materials can be an effective alternative to green manure crops for a sustainable management of root-knot nematode infestations. The suppressive performance of soil amendments with three commercial formulations of defatted seed meal from Brassica carinata, dry biomass of Medicago sativa and pressed pulp from Beta vulgaris was comparatively evaluated on the root knot nematode Meloidogyne incognita both on potted and field tomato (cv. Regina) trials. Products were applied at rates of 10, 20, 30 or 40 g/kg and 20 and 40 T/ ha soil in pots and field, respectively. Soil non treated or treated with the nematicide Oxamyl were used as controls in both experiments. Amendments in potted soil significantly reduced M. incognita infestation on tomato roots compared to both the untreated control and treatment with Oxamyl, also increasing tomato plant growth up to the 30 g/kg soil rate. At the end of the field tomato crop, soil population density of M. incognita resulted significantly reduced by all the tested treatments, whereas tomato yield was significantly higher than the untreated control only at the lowest amendment rate. Soil amendments with the materials tested in this study demonstrated to be a potential additional tool for a satisfactory and safe management of root-knot nematodes.

中文翻译：

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颗粒状植物材料土壤改良剂对根结线虫南方根结线虫的抑制作用

总结 用配制的植物生物质或废料进行土壤处理可以有效替代绿肥作物，以可持续管理根结线虫侵扰。在盆栽和田间番茄 (cv. Regina) 根结线虫根结线虫中，比较评估了土壤改良剂的三种商业配方的土壤改良剂的抑制性能，其中包括来自芸苔的脱脂种子粉、苜蓿的干生物量和来自甜菜的压榨果肉试验。在盆栽和大田中分别以 10、20、30 或 40 g/kg 以及 20 和 40 T/ha 土壤的比例施用产品。在这两个实验中，未处理或用杀线虫剂 Oxamyl 处理的土壤用作对照。盆栽土壤中的修正显着降低了 M。与未处理的对照和用 Oxamyl 处理相比，番茄根部的 incognita 侵染，也将番茄植株的生长增加到 30 g/kg 的土壤速率。在大田番茄作物结束时，所有测试处理都显着降低了南方根结线虫的土壤种群密度，而仅在最低修正率下，番茄产量显着高于未处理的对照。本研究中测试的土壤改良剂证明是令人满意和安全管理根结线虫的潜在附加工具。而番茄产量仅在最低修正率下显着高于未处理的对照。使用本研究中测试的材料进行土壤改良，证明是令人满意和安全管理根结线虫的潜在附加工具。而番茄产量仅在最低修正率下显着高于未处理的对照。本研究中测试的土壤改良剂证明是令人满意和安全管理根结线虫的潜在附加工具。