Closed weeding corn seedlings are still very weak seedlings, growth is almost stagnant, yellow leaves edge scorch, stems turn from yellow to red-brown, some stem base swelling, dumplings, what caused it? Can it be remedied? According to experience, the author believes that this is a herbicide-induced phytotoxicity. The vast majority of current corn fields use chemical drugs for weed control. Indeed, the use of herbicides on the road can effectively suppress and kill weeds and increase labor efficiency. However, due to the low level of application of herbicides and the unsatisfactory effect of some herbicides, the following aspects have been demonstrated: Some farmers have used herbicide varieties that have a negative impact on corn; others have arbitrarily increased the herbicide application dose. Some unfavorably mix with other pesticides; some do not control the time of application, especially spraying at high temperatures at noon; some residual herbicide residue on the crop residue; some uneven application or repeated medication; Some of them were affected by winds on the day of application of pesticides from neighboring fields. Some had poor soil moisture during application and increased the amount of pesticides applied. All of these listed factors may cause corn corn to varying degrees of phytotoxicity. As for whether corn can be remedied after suffering herbicide harm, it should be treated differently. For maize that suffers severely from herbicides, it should be ploughed in time to other crops to make up for the losses. For corn seedlings that are slightly harmed by phytotoxicity, symptomatic management can completely ease recovery. According to the experience of previous years, first of all, traditional agricultural measures should be applied to promote corn growth. The first is to combine the weather, break down the soil compaction in the field, to cultivate loose soil, improve the maize root atmosphere permeability environment, promote new root development, and improve the seedlings own vitality; Second, the topdressing available nitrogen fertilizer, enhance the ability of fertilizer supply, promote stem and leaf transformation, Improve photosynthetic efficiency; Third, spraying Hui Man Fung, Zhuang Fu Xing and other active liquid fertilizer 800 to 1000 times liquid, ease of injury. Second, with the chemical control, activate the corn seedlings to restore growth. One can choose to use Tianfengsu or Baoshen (Brassica lactoferricum) 0.01% EC 10 ml to Qingshui 15 kg; 2 can use Bicui, Qushengsu and other nutrient solutions, ie, 3 grams per mu, and 67 ml Water 40 ~ 50 kg; three available 0.05% "920" (gibberellin) solution; four available "802" plant growth regulator 2000 times, 10 to 15 days after the re-spray. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Xi'an Double H Health Technology Co., Ltd , https://www.xadoubleh.com
Corn field herbicide damage seedlings to save?