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Seed treatments for control of Meloidogyne graminicola in flooded rice
European Journal of Plant Pathology ( IF 1.8 ) Pub Date : 2021-06-25 , DOI: 10.1007/s10658-021-02294-9
Mayra Renata Cruz Soares , Cláudia Regina Dias-Arieira , Ana Paula Mendes Lopes

Meloidogyne graminicola is responsible for large yield losses in flooded rice, a problem that is mainly associated with the limited efficacy of nematode management tactics. This study aimed to assess the efficiency of different products applied by seed treatment in controlling M. graminicola in flooded rice grown from polymer-coated and uncoated seeds. Greenhouse experiments were designed to investigate treatment effects on nematode reproduction, root penetration, and plant vegetative parameters, and in vitro assays were used to assess treatment effects on egg hatching and juvenile mortality. Treatments were as follows: Wollastonite (calcium silicate), Agrosilicon (calcium and magnesium silicate), NemOut™ (Bacillus licheniformis + Bacillus subtilis + Trichoderma longibrachiatum), CompostAid® (Lactobacillus plantarum + B. subtilis + Enterococcus faecium), NemaControl® + StimuControl® (Bacillus amyloliquefaciens + Trichoderma harzianum), Nim-I-Go® (Azadirachta indica oil), Avicta 500 FS (abamectin), and CropStar® (thiodicarb + imidacloprid). Inoculated and uninoculated controls were also included. Avicta 500 FS, CropStar®, NemOut™, and CompostAid® were the most effective in reducing nematode penetration and number of nematodes per gram of root. The best in vitro results were obtained with Avicta 500 FS, CropStar®, NemOut™, and CompostAid®. Only Wollastonite showed no in vitro nematicidal activity. Most treatments also improved vegetative growth. It was concluded that treatment of rice seeds with chemical or biological products is effective in controlling M. graminicola.



中文翻译:

防治水淹稻中禾本科根结线虫的种子处理

Meloidogyne graminicola是造成淹水水稻大量减产的原因,这一问题主要与线虫管理策略的有效性有限有关。本研究旨在评估通过种子处理应用的不同产品在控制由聚合物包衣和未包衣种子种植的淹水水稻中的禾本科小芽孢杆菌的效率。温室实验旨在研究处理对线虫繁殖、根部穿透和植物营养参数的影响,并使用体外测定来评估处理对卵孵化和幼虫死亡率的影响。处理如下:硅灰石(硅酸钙)、Agrosilicon(硅酸钙和镁)、NemOut™(地衣芽孢杆菌 + 枯草芽孢杆菌) +  Trichoderma longibrachiatum ), CompostAid® ( Lactobacillus plantarum  +  B. subtilis  +  Enterococcus faecium ), NemaControl® + StimuControl® ( Bacillus amyloliquefaciens  +  Trichoderma harzianum ), Nim-I-Go® ( Azadirachta indica油)、Avicta 500 FS(阿维菌素)和 CropStar®(硫双威 + 吡虫啉)。还包括接种和未接种的对照。Avicta 500 FS、CropStar®、NemOut™ 和 CompostAid® 在减少线虫渗透和每克根的线虫数量方面最有效。使用 Avicta 500 FS、CropStar®、NemOut™ 和 CompostAid® 获得了最佳体外结果。只有硅灰石没有表现出体外杀线虫活性。大多数治疗还改善了营养生长。结论是,用化学或生物产品处理水稻种子对控制禾本科禾本科很有效。

更新日期:2021-07-13
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