Lawn Weeds against these can not be ignored

Improved application techniques . Herbicide spraying must be uniform , we can not re-spray , it can not leak spray . If adjacent plots are herbicide sensitive plants , will have to take quarantine measures , remember when the wind is not spraying so as to endanger the adjacent sensitive crops . Sprayed drug use bleach rinse the sprayer after a few times and then further use on other plants . Herbicide farm sprayers is best dedicated to avoid hurting other crops .

Herbicides strictly against the water . Wo to eliminate , for example, the normal amount of 90 ml per acre , requires watered 30 kg , or two spray water , then the concentration of effective weed herbicide concentration . Excessive water , herbicide concentration is low , it will affect the herbicidal effect ; water is too small, the herbicide at high concentrations, inhibit the growth of grass light in weight is likely to cause injury ; therefore , spraying herbicides must be in strict accordance with the instructions against water , you can use the graduated cylinder , beaker assist weighing, try to make it cool and accurate.

In addition, high organic matter content of the soil particle size , herbicide adsorption capacity , and soil microbes and more vigorous activities , drug dose is degraded , may be appropriate to increase the dosage ; while loamy coarse sand , the adsorption amount of pharmaceutical small pharmaceutical molecules in the soil particles are mostly free state , activity, prone to injury , the dosage can be reduced appropriately .

Most herbicides in alkaline soil stability, not degrade , so Vinca longer easy to Succeeding seedlings produce injury ,perfume sprayer  should be sprayed on the type of soil in advance as possible , and use caution.

With respect to chemical weeding operations, generally speaking spraying to do five to see : a look at the size of the lawn recruits , two to see how much weed leaf , three to see if the weather is sunny, dry and four to see the soil moist , sandy soil five to see who is stronger adhesive .