Weeding in the corn field increases

In recent years, the effect of herbicide application in corn fields has been unsatisfactory and has been “reproached” by some farmers. In this regard, the author conducted research and specifically discussed the following views.

First, the reason for herbicides. Due to fierce competition in the market, many herbicide manufacturers have adopted the "price reduction, advertising bombing" means, the cost has increased substantially, in order to ensure a certain profit, some manufacturers have taken measures to reduce capacity and reduce content to reduce costs. For example: The previous herbicide was a bottle of 500 grams, a bottle of medicine to fight 3 acres of land is very good; now is mostly a bottle of 300 grams, plus the effective content is reduced, is a bottle of 2 acres of land, the effective dose is also Obviously insufficient.

Second, the climate. There are three main problems: First, high temperature and drought during drug use. After the sowing of maize, there was little rainfall. Drought and high temperature directly affected the results of use. Even if the land is poured over water, the liquid will quickly evaporate and affect the effect (the most typical in 1998). The second is excessive rainfall during medication. After the application of herbicides, sudden rain or continuous rainfall will destroy the closed layer of the liquid and cause the loss of liquid medicine. As a result, weeds and young roots of weeds will not absorb the doses that can cause death, resulting in poor weed control. The third is excessive rainfall in the middle and late periods. Weed seeds are distributed in different depths in the soil, and the germination time is not the same; at the same time, the effective period of the soil-enclosed herbicide is 45-60 days. If there is too much rainfall in the middle and later stages, there will naturally appear “not long grass in the early stage and late stage grass. The situation of Montreal (most typical in 2003).

Third, improper medication. First, there are too many field covers and too little water. The number of wheat stubble harvested by wheat machinery is too high, wheat straw and wheat stubble in the field are too large, and the area of ​​contact between the liquid and the surface is greatly reduced for herbicide interception; many farmers use 1 to 2 sprayers per acre of water, and the spraying is not uniform, which directly affects Weeding effect. The second is late medication. Some of the plots were already "grass covered with land" or "big grass full of lotus roots" (mainly Matang and wild valley seedlings). Soil-enclosed herbicides have no effect on monocotyledonous weeds above 3 leaves.

Fourth, response measures. In view of the above problems, the author's practical experience is: do not rely on advertising, use high herbicides with high reputation, good reputation, and high content of active ingredients, such as 48% Zhongdian Caoba (CLP Group) and 50% Xinyu Steam ( Xuanhua), 48% Dingyi, 42% cyantriazine, etc. For plots with more field coverings, the author concluded that the "double increase one mix" method has a significant effect. "Double increase" means increased water consumption (2 to 3 sprayers per mu), increasing the dosage by 30% to 50% (rejection of herbicides and their volatilization loss when offsetting the field cover). "One mix" is to increase the control effect, and to avoid excessive herbicides may cause phytotoxicity to corn or lower glutinous wheat. Two different brands of herbicides are used in combination, for example, 48% Zhongdian Caoba (yi A) + 40% different Propyramid, 50% New Jade (European A) + 42% Cyanide B or 48% Ding E, etc. (Note: The main components of the herbicides used in the two brands must not be the same, and the amount used is 65% of their respective recommended dosage. 75%.This method is much safer than using a herbicide to increase the amount of 30% to 50%.) In addition, for the plot with large grass in the field, before the spraying (before maize seedlings after sowing), 600-800 g of glyphosate was used to eradicate the large herb with systemic herbicide.

Goji Berry is a kind of super food and also a kind of herb, which planting and eating history in China over 3000 years. Starts from the Ming Dynasty in China, the goji berries is serves as a precious tribute only for the imperial edible. Into the modern, goji berry as a popular daily nourishing products, in China is regarded as "longevity fruit."

Goji Berry

Goji Berry,Dried Berries,No Pesticide Goji Berry,Bulk Dried Wolfberry

NINGXIA IVY BIOTECHNOLOGY CO.,LTD , http://www.berries-goji.com