Davidson Bill, Cook Tony, Chauhan Bhagirath S
Department of Primary Industries (NSW DPI), Tamworth Agriculture Institute, Tamworth 2340, New South Wales, Australia.
Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Gatton 4343, Australia.
Plants (Basel). 2019 Jul 24;8(8):245. doi: 10.3390/plants8080245.
The over-reliance on the herbicide glyphosate for knockdown weed control in fallows under minimum and zero-till cropping systems has led to an increase in populations of glyphosate-resistant weeds. and are two major grass weeds in the cropping regions of northern New South Wales and southern Queensland, Australia, that have become harder to kill due to a steady rise in the occurrence of glyphosate-resistant weed populations. Therefore, to help growers contain these hard to kill fallow weeds, an alternate approach to glyphosate application is needed. With this purpose in mind, a pot study was carried out during the summer seasons of 2015 and 2016 at the Tamworth Agricultural Institute, Tamworth, NSW, Australia, to evaluate the efficacy of tank mixtures and sequential applications of Group H (4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor), Group C (inhibitors of photosynthesis at photosystem II), Group A (ACCase inhibitors) and Group L (photosystem I inhibitor) herbicides on late tillering and plants. These herbicide groups are a global classification by the Herbicide Resistance Action Committee. Highly effective results were achieved in this study using combinations of Groups H, C, A and L herbicides applied as tank mixtures for controlling large plants. Additionally, sequential applications of Group H, C and A herbicides followed by (fb) paraquat were shown to be very effective on large plants. Late tillering plants were generally well controlled by tank mixtures, and sequential applications proved to be highly effective on this grass weed as well. Haloxyfop in combination with paraquat as a tank mixture, via sequential application or as a stand-alone treatment, was highly effective for control; however, using combinations of herbicide groups is the preferred choice when combating herbicide resistant weed populations. There was a clear synergy shown using Group H, Group C and Group A herbicides in combination with the Group L herbicide paraquat in this study for controlling advanced and plants. These combinations were shown to be successful on plants grown under glasshouse conditions; however; these treatments would need to be tested on plants grown in a field situation to show whether they will be a useful solution for farmers who are trying to control these weeds in fallow.
在少耕和免耕种植系统下的休耕期，过度依赖除草剂草甘膦进行杂草防除，已导致抗草甘膦杂草种群增加。在澳大利亚新南威尔士州北部和昆士兰州南部的种植区，[杂草名称1]和[杂草名称2]是两种主要的禾本科杂草，由于抗草甘膦杂草种群的发生率稳步上升，它们变得越来越难杀灭。因此，为了帮助种植者控制这些难以杀灭的休耕杂草，需要一种替代草甘膦施用的方法。出于这个目的，2015年和2016年夏季在澳大利亚新南威尔士州塔姆沃思的塔姆沃思农业研究所进行了一项盆栽试验，以评估H组（4-羟基苯丙酮酸双加氧酶（HPPD）抑制剂）、C组（光合系统II光合作用抑制剂）、A组（乙酰辅酶A羧化酶抑制剂）和L组（光合系统I抑制剂）除草剂的桶混和顺序施用对[杂草名称1]和[杂草名称2]晚分蘖植株的防效。这些除草剂组是除草剂抗性行动委员会的全球分类。本研究通过将H、C、A和L组除草剂组合作为桶混剂用于防除大型[杂草名称1]植株，取得了高效的结果。此外，先顺序施用H、C和A组除草剂，然后施用（fb）百草枯，对大型[杂草名称2]植株显示出非常有效的防除效果。晚分蘖的[杂草名称1]植株通常能被桶混剂很好地控制，顺序施用对这种禾本科杂草也证明是非常有效的。高效氟吡甲禾灵与百草枯作为桶混剂，通过顺序施用或作为单独处理，对[杂草名称2]防除非常有效；然而，在对抗抗除草剂杂草种群时，使用除草剂组的组合是首选。在本研究中，使用H组、C组和A组除草剂与L组除草剂百草枯组合来防除处于生长后期的[杂草名称1]和[杂草名称2]植株，显示出明显的增效作用。这些组合在温室条件下种植的植株上被证明是成功的；然而，这些处理需要在田间种植的植株上进行测试，以表明它们是否会成为试图在休耕期控制这些杂草的农民的有用解决方案。
