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Co–application effect of herbicides and micronutrients on weeds and nutrient uptake in flooded irrigated rice: Does it have a synergistic or an antagonistic effect?
Crop Protection ( IF 2.5 ) Pub Date : 2021-07-10 , DOI: 10.1016/j.cropro.2021.105755
Hani S. Saudy 1 , Ibrahim M. El–Metwally 2 , Mostafa G. Shahin 1
Affiliation  

In submersed rice fields, weeds are considered the main source of nutrients removal. Hence, reduction in yield and grain quality is realized. Thus, a two–year field experiment was performed to find out the best cooperative effect between herbicides and micronutrients for controlling rice weeds with yield in mind. Two herbicides (halosulfuron–methyl and bentazone) and three micronutrients (Fe, Mn and Zn) were arranged in a strip plot design with three replicates. Results exhibited that in plots treated by halosulfuron–methyl, the control treatment (without fertilizing) showed the maximum reductions in weed N, P and K uptake, however, it statistically equaled Fe and Mn treatments in weed N uptake and Mn, Fe and Zn treatments in weed K uptake. With controlling weeds by halosulfuron–methyl herbicide, Zn treatment was as similar as Fe and Mn treatments for increasing plant height, straw yield and grain yield of rice. The interactions of halosulfuron–methyl x Zn treatment (for N and P in rice grain) and halosulfuron–methyl x Zn or Fe treatments (for P in rice grain) had synergistic effects. Moreover, the highest increases in Fe, Mn and Zn contents in rice grains were recorded with halosulfuron–methyl plus Fe, Mn and Zn treatments, respectively. In conclusion, rice producers should be aware of the synergism and co–operative effects between herbicides and micronutrients. The synergistic effect could be exploited for reducing the hazardous impacts of weeds, and hence, it raises yield potentiality and quality.



中文翻译:

除草剂和微量营养素对淹水灌溉稻田杂草和养分吸收的共施效应:是否具有协同或拮抗作用?

在沉水稻田中,杂草被认为是去除养分的主要来源。因此,实现了产量和谷物质量的降低。因此,进行了为期两年的田间试验,以找出除草剂和微量营养素之间在兼顾产量的情况下控制水稻杂草的最佳协同效果。将两种除草剂(卤嘧磺隆和灭草松)和三种微量营养素(铁、锰和锌)排列在带状小区设计中,三个重复。结果表明,在用卤代嘧磺隆处理的地块中,对照处理(不施肥)显示杂草 N、P 和 K 吸收的最大减少,但是,它在统计上与 Fe 和 Mn 处理在杂草 N 吸收和 Mn、Fe 和 Zn 方面相等杂草钾吸收的处理。用卤嘧磺隆除草剂防治杂草,锌处理在提高水稻株高、秸秆产量和籽粒产量方面与铁、锰处理相似。卤嘧磺隆-甲基x Zn处理(稻粒中的N和P)和卤嘧磺隆-甲基x Zn或Fe处理(稻粒中的P)的相互作用具有协同效应。此外,分别用卤代嘧磺隆加 Fe、Mn 和 Zn 处理记录了水稻籽粒中 Fe、Mn 和 Zn 含量的最大增加。总之,水稻生产者应该意识到除草剂和微量营养素之间的协同作用和协同作用。可以利用协同效应来减少杂草的有害影响,从而提高产量潜力和质量。卤嘧磺隆-甲基x Zn处理(稻粒中的N和P)和卤嘧磺隆-甲基x Zn或Fe处理(稻粒中的P)的相互作用具有协同效应。此外,分别用卤代嘧磺隆加 Fe、Mn 和 Zn 处理记录了水稻籽粒中 Fe、Mn 和 Zn 含量的最大增加。总之,水稻生产者应该意识到除草剂和微量营养素之间的协同作用和协同作用。可以利用协同效应来减少杂草的有害影响,从而提高产量潜力和质量。卤嘧磺隆-甲基x Zn处理(稻粒中的N和P)和卤嘧磺隆-甲基x Zn或Fe处理(稻粒中的P)的相互作用具有协同效应。此外,分别用卤代嘧磺隆加 Fe、Mn 和 Zn 处理记录了水稻籽粒中 Fe、Mn 和 Zn 含量的最大增加。总之,水稻生产者应该意识到除草剂和微量营养素之间的协同作用和协同作用。可以利用协同效应来减少杂草的有害影响,从而提高产量潜力和质量。总之,水稻生产者应该意识到除草剂和微量营养素之间的协同作用和协同作用。可以利用协同效应来减少杂草的有害影响,从而提高产量潜力和质量。总之,水稻生产者应该意识到除草剂和微量营养素之间的协同作用和协同作用。可以利用协同效应来减少杂草的有害影响,从而提高产量潜力和质量。

更新日期:2021-07-16
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