Physicochemical Compatibility of Agrochemical Mixtures in Spray Tanks for Paddy Field Rice Crops

ABSTRACT: The use of pesticide mixtures constitutes a relatively common practice in rice crops. Thus, the aim of this work was to evaluate the physicochemical interaction among different pesticide tank mixes for use in paddy field rice. The study has followed technical standards specified in ABNT [Associação Brasileira de Normas Técnicas (Brazilian National Standards Organization)] NBR [Norma Brasileira Regulamentadora (Brazilian Regulatory Standard)] NBR 13875:2014 for the assessment of physicochemical compatibility by means of a dynamic technique. Treatments consisted of mixtures of 12 pesticides, which constituted 16 treatments, six of which are composed by mixing herbicides, six by mixing herbicide and insecticide, one by mixing fungicides, and three by mixing fungicide and insecticide. Tank mixtures among herbicides Clincher® + Ricer®, Clincher® + Kifix®, Clincher® + Imazethapyr Plus Nortox®, Clincher® + Ricer® + Kifix®, Clincher® + Ricer® + Sirius® 250 CS, Imazethapyr Plus Nortox® + Basagran® 600, between herbicides and insecticides Clincher® + Ricer® + Arrivo® 200 EC, Clincher® + Kifix® + Arrivo® 200 EC, Clincher® + Imazethapyr Plus Nortox® + Arrivo® 200 EC, Clincher® + Ricer® + Kifix® + Arrivo® 200 EC, Clincher® + Ricer® + Sirius® 250 CS + Arrivo® 200 EC, Imazethapyr Plus Nortox® + Basagran® 600 + Arrivo® 200 EC, among fungicides Alterne® + Bim® 750 BR + Priori® 250 CS, and between fungicides and insecticides Bim® 750 BR + Actara® 250 WG, Alterne® + Bim® 750 BR + Priori® 250 CS + Actara® 250 WG, and Alterne® + Bim® 750 BR + Priori® 250 CS + Talisman® did not present any physicochemical change in the spray mix and are therefore compatible to be used in mixtures in the spray tank in plant treatments in rice crops.

摘要：农药混配是水稻作物生产中较为普遍的施药方式。本研究旨在评估适用于水田水稻的不同农药桶混制剂之间的理化相互作用。本研究遵循巴西国家标准协会（Associação Brasileira de Normas Técnicas, Brazilian National Standards Organization）发布的巴西规范标准（Norma Brasileira Regulamentadora, Brazilian Regulatory Standard）NBR 13875:2014中规定的技术规范，采用动态技术开展理化相容性评价。本试验以12种农药为原料配置混配组合，共得到16个处理组：其中6组为单一除草剂混配，6组为除草剂与杀虫剂混配，1组为单一杀菌剂混配，3组为杀菌剂与杀虫剂混配。具体混配组合如下：除草剂间混配：Clincher® + Ricer®、Clincher® + Kifix®、Clincher® + Imazethapyr Plus Nortox®、Clincher® + Ricer® + Kifix®、Clincher® + Ricer® + Sirius® 250 CS、Imazethapyr Plus Nortox® + Basagran® 600；除草剂与杀虫剂混配：Clincher® + Ricer® + Arrivo® 200 EC、Clincher® + Kifix® + Arrivo® 200 EC、Clincher® + Imazethapyr Plus Nortox® + Arrivo® 200 EC、Clincher® + Ricer® + Kifix® + Arrivo® 200 EC、Clincher® + Ricer® + Sirius® 250 CS + Arrivo® 200 EC、Imazethapyr Plus Nortox® + Basagran® 600 + Arrivo® 200 EC；杀菌剂间混配：Alterne® + Bim® 750 BR + Priori® 250 CS；杀菌剂与杀虫剂混配：Bim® 750 BR + Actara® 250 WG、Alterne® + Bim® 750 BR + Priori® 250 CS + Actara® 250 WG、Alterne® + Bim® 750 BR + Priori® 250 CS + Talisman®。上述所有混配组合的喷雾药液均未发生理化性质变化，因此可兼容作为水稻田间施药的桶混制剂使用。