With the promotion of agricultural modernization, the use of herbicides in cotton fields has been increasingly recognized by the majority of employees. At the same time, the occurrence of phytotoxicity has also occurred from time to time. According to the cotton planting process, some contractors use the problem of herbicides, summing up some experiences and sharing with you.
It is understood that some employees do not know enough about the use of herbicides, and buy herbicides in private farms. Moreover, the “no-harm†propaganda of the pesticide sales staff is convinced, and the herbicide is used on the fennel in the cotton field, the furrows around the cotton field and the field. Due to drifting pollution, the surrounding cotton was damaged, which brought about certain economic losses and affected the enthusiasm of some workers for cotton planting. The symptoms of phytotoxicity using herbicides are as follows: cotton leaves are chicken-shaped, the main stem and fruit branches grow atrophy, severe leaves, young buds and leaves are scorched and yellow, cotton growth stagnates, buds fall off, until the whole plant death.
In order to prevent the recurrence of such incidents and avoid the deadweight loss caused by the use of pesticides, we advise the employees and friends:
1. Don't buy pesticides, foliar fertilizers, etc. in private farms.
2. Master the necessary pesticide knowledge and common sense, and use pesticides safely and scientifically.
3, due to the wide variety of herbicides, the use of methods and control objects are also different, in the spray can first consult the company's technicians, choose the right type of herbicide.
4, the application dose must be used according to the use of the indicated dosage, do not arbitrarily increase the amount of medication to avoid the occurrence of phytotoxicity.
5. Reasonable rotation of medication. Long-term use of a single herbicide can cause weed resistance, which reduces the herbicidal effect. In addition, the long-term use of a single herbicide will also increase the population of microorganisms that degrade the herbicide in the soil, accelerate the degradation of the herbicide, and shorten the efficacy period.
6. After the phytotoxicity of cotton occurs, it is necessary to report the situation to the unit leader for the first time and take effective measures to remedy the situation. The cotton fields that are seriously damaged can be topped and re-topped early, so that the remaining veins can grow new branches and cultivate new plants. Timely irrigation, spraying acetic acid, gibberellin and other mitigation physiology, spraying foliar fertilizer to promote its growth, and minimize the damage caused by phytotoxicity.
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