Selection methods of herbicides in Corn Field

The main weeds in corn field are: crabgrass, green bristlegrass, golden bristlegrass, saxifraga, teff grass, goosegrass, barnyardgrass, chenopodium, small chenopodium, chenopodium, ground skin, salsola, concave amaranth, axillary amaranth, celosia, purslane, iron amaranth, Abutilon theophrasti, wild watermelon seedlings, Solanum nigrum and other weeds. Perennial weeds have convolvulus, reed, nutgrass and so on.

post-sowing and pre-seedling

1. When there are no weeds in the field, closed treatment can be adopted. Commonly used pesticides: 40% isopropyline·atrazine 250- 300g/mu, 40% acetochlor·atrazine 200 - 250g/mu, 40% acetochlor·atrazine 200 - 250g/mu, 52% isopropyline·atrazine 200- 250g/mu, 60% isopropyline·atrazine 180- 230g/mu, 40% acetochlor·atrazine 200- 250g/mu.

2. After wheat harvest, the fields with more annual weeds in the field shall adopt the mixed technology to implement "one seal and one kill": 40% isopropyrol·atrazine 200- 250g +20% paraquat 150- 200g/mu, 52% isopropyrol·atrazine 150- 200g +20% paraquat 150- 200g/mu.

3. After wheat harvest, the fields with more perennial weeds in the field shall adopt the mixed technology to implement "one seal and one kill": 40% isopropyrol·atrazine 200- 250g +41% glyphosate isopropyl amine salt 250- 300g/mu, 52% isopropyrol·atrazine 150- 200g +41% glyphosate isopropyl amine salt 250- 300g/mu.

corn growing season

1. From 1-3 leaf stage of corn to 1-2 leaf stage of weed, commonly used pesticides: 40% Yufeng (Isopropyza·Atrida) 250-300 ml/mu, 40% Yuduoshou (Isopropyza·Atrida) 250-300 ml/mu, 52% Xiyangyang (Isopropyza·Atrida) 200-250 ml/mu, 60% Yujia (Isopropyza·Atrida) 180-230 ml/mu.

2. The 3-5 leaf stage of maize is an important stage for weed control in maize field. If weeds are not controlled in time, it will directly affect the growth and yield of maize. Corn 3-5 leaves, grass weeds 2-5 leaves, broadleaf weeds 3-5 cm tall. Commonly used pesticides: 4% nicosulfuron suspension 100-120 ml/mu, 40% Jinyufeng suspension 100-120 ml/mu, 53% Yutian (nicosulfuron atrazine) 90-105 g/mu.

3. The plot with 3-4 leaves of corn and more cyperus rotundus in the field. Commonly used pesticides: 40% Sishiduo (nicoatrazine) 80- 100ml +56% dimethyl sodium tetrachloride 50- 60g/mu, 4% nicosulfuron 100ml/mu +56% dimethyl sodium tetrachloride 50- 60g/mu, 56% dimethyl sodium tetrachloride 60- 80g/mu, 48% bentazone 150- 200ml/mu, 4% nicosulfuron 120- 150ml/mu.

4. For plots with more weeds in the 5-6 leaf stage of corn, 40% Xishiduo (nicoatrazine) 120-150 ml/mu, 40% Jinyufeng (nicosulfuron) 120-150 ml/mu, 40% fate (sulfatrazine) 250-300 ml/mu, 40% Xishiduo (nicoatrazine) 80-100 ml +56% dimethyl sodium tetrachloride 50-60 g/mu can be selected. 40% Fate (Sulfonatrazine) 100- 150ml +40% Happy event 80- 100ml/mu.

5, corn 5-7 leaf stage Cyperus rotundus, field convolvulus, small thistle, gray vegetables and other plots with more weeds, can apply 56% dimethyltetrachloromethane sodium salt soluble powder 80-100 g/mu, 48% bentazone 200-250 ml/mu, 40% Xishiduo (tobacco atrazine) 80-100 ml +56% dimethyltetrachloromethane sodium 50-60 g/mu.

6. After 8-10 leaves of corn (plant height 80 cm), there are many weeds in the plot, and 20% paraquat water solution is sprayed directionally between rows 150-200 ml/mu. If the weeds in the field are sparse, they can be used together with closed herbicides, such as 40% isopropyrol·atrazine 150- 200ml +20% paraquat 200ml/mu.