Efficacy of fosthiazate (Nemathorin 10 % GR) in managing Meloidogyne enterolobii in chili crop in Thailand

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-09-19 DOI:10.1016/j.cropro.2025.107425

Buncha Chinnasri, Natthidech Beesa, Arunee Suwanngam, Kamonwan Puttawong, Thippawan Korsrisakul, Phornthawon Phanbut, Kansiree Jindapunnapat, Anongnuch Sasnarukkit

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引用次数: 0

Abstract

Root-knot nematodes (Meloidogyne spp.) are among the most destructive pathogens affecting chili crops worldwide, causing significant economic losses. Fosthiazate, a nematicide with proven efficacy against plant-parasitic nematodes, has been understudied in Thailand for its impact on root-knot nematodes. This study aimed to evaluate the potential of fosthiazate (Nemathorin 10 % GR) against Meloidogyne spp., the causal agent of root-knot disease in chili, under both greenhouse and field conditions. In greenhouse experiments, fosthiazate was applied as preventive and curative treatments at rates of 7.9–31.6 mg/pot (1–4 kg a.i./ha). Both approaches demonstrated significant nematicidal activity against M. enterolobii, but preventive treatments consistently yielded higher efficacy. Preventive applications reduced gall formation, egg mass production, and egg counts by 55.3–98.7 %, 75.7–99.6 %, and 64.4–100.0 %, respectively, as compared to without fosthiazate application. Field trials conducted in Khon Kaen and Ubon Ratchathani provinces on “Super Hot” variety (Trial 1) and “Amphawa Hot Pepper” variety (Trial 2), naturally infected with root-knot nematodes further validated these findings. The best results were obtained with two applications of fosthiazate at rates of 2 and 3 kg a.i./ha, leading to reductions in the root-galling index by 22.6 %–59.6 % and egg counts by 49.4 %–80.1 %. Importantly, no phytotoxicity was observed at any application rate or number of application times. These findings suggest that fosthiazate could be a promising option for managing Meloidogyne spp. infestations in chili fields. This study provides the first comprehensive evaluation of fosthiazate's effectiveness against root-knot nematodes in chili crops in Thailand and highlights its utility in nematode management strategies.

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磷噻嗪（10% GR）在泰国辣椒作物中防治肠弧菌的效果

根结线虫（Meloidogyne spp.）是影响全球辣椒作物的最具破坏性的病原体之一，造成重大的经济损失。Fosthiazate是一种被证明对植物寄生线虫有效的杀线虫剂，在泰国对其对根结线虫的影响进行了充分的研究。在温室和田间条件下，研究了磷噻酯（Nemathorin 10% GR）对辣椒根结病病原菌Meloidogyne的防治潜力。在温室试验中，磷噻嗪作为防治处理，用量为7.9 ~ 31.6 mg/罐（1 ~ 4 kg a.i./ha）。两种方法都显示出显著的杀线虫活性，但预防性治疗始终产生更高的效果。与不施用氟化磷相比，预防性施用可减少虫瘿形成、产蛋量和卵数，分别减少55.3 - 98.7%、75.7 - 99.6%和64.4 - 100.0%。在孔真省和乌汶拉差他尼省对自然感染根结线虫的“超级辣”品种（试验1）和“安帕瓦辣椒”品种（试验2）进行的田间试验进一步证实了这些发现。以2和3 kg a.i./ hm2 2次施用氟化磷效果最好，根腐率降低22.6% ~ 59.6%，虫卵数降低49.4% ~ 80.1%。重要的是，在任何施用速率或施用次数下均未观察到植物毒性。这些发现表明，磷噻嗪可能是一种很有前途的选择，以控制在辣椒田的Meloidogyne sp侵染。本研究首次全面评价了氟噻嗪对泰国辣椒作物根结线虫的防治效果，并强调了其在线虫管理策略中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.