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Application of agricultural spray oil in foreign countries
2014/7/24
The United States has the earliest research on agricultural spray oil and is the most widely used. The annual use of agricultural spray oil in California alone is as high as 10,000 tons. It is mainly used for pest control on citrus, apple, deciduous fruit trees and nuts and vegetables. Ju Nong E purchases a large amount of spray oil for winter control of scale insects, apple whole claws, and fruit moss, while at the same time smelting leaf curls and controlling various mites in summer (two-spotted spider mites, red spider mites, hedgehogs ). In apples, it is mainly used to control wintering aphids and apples, eggs, summer mites and apple mites. On the pear, the farmer uses agricultural spray oil to control scale insects, mites, whitefly and pear hibiscus. Since the comprehensive management of pests based on agricultural spray oil, the amount of organic phosphorus in pear trees has decreased by 70--72%, and the cost of control has decreased by 442-494 US dollars per hectare. Used on grapes to control powdery mildew, mites and two leafhoppers. The amount of cotton used is quite large, but it is mainly used as a synergist, and at the same time, both cotton aphid and whitefly are treated. In Florida, approximately 90% of citrus fruit growers use at least once a year, most often 2–3 times. Usually, fruit farmers use spray oil to dilute 100 times to control citrus red spiders, and the control effect can be as long as 3-8 weeks. For the most serious citrus disease in Florida - lipid disease, fruit farmers use 100--200 times spray oil, which can simultaneously treat mites, soot, and whitefly. In other states, agricultural spray oils are mainly used alone or in combination with other fungicides to control banana gray spot to increase the weight of each bundle, and also to control powdery mildew, mites and spider mites on grapes and sweet cherries. There is no effect on the wintering predation.
Canadian experience has shown that the optimal duration of treatment for grape powdery mildew and mites is 100 times the continuous spraying of 100 times of agricultural spray oil every 14 days from fruit set to grape string formation. After the formation of grape bunches, the control effect on powdery mildew on grape bunches is common, but it can cure downy mildew.
In Australia, integrated pest control based on agricultural spray oil has been widely used in a variety of crops, especially on citrus. At present, many orchards spray one or two agricultural spray oils every year, which can solve the problem of pest control. It is estimated that the cost of pesticides saved is between $400 and $1000 per hectare per year. The integrated control method began to be applied in apple production. The use of 50 times of agricultural spray oil can control apples with full claws for up to 3 months. The control effect of using 100 times of agricultural spray oil is equivalent to the control effect of cockroaches and speed mites on mites and scale insects. As a comprehensive control measures for the two-spotted spider mites, it is recommended to use 200 times of agricultural spray oil and release predatory mites. On pears, plums and apricots, agricultural spray oil is used to control scale insects, mites and mites. Agricultural spray oils are currently used on flowers, vegetables and cotton.
In Italy, the use of agricultural spray oil on citrus began in 1940, and the current use is 7,000 tons, accounting for 12% of citrus. Mainly used to control scale insects, mites and leaf miner. In Japan, it has been successfully used to control citrus red spiders, scale insects, rust spiders, rickets and resin diseases. In New Zealand, agricultural spray oil is mainly used to control kiwifruit scale insects.
Canadian experience has shown that the optimal duration of treatment for grape powdery mildew and mites is 100 times the continuous spraying of 100 times of agricultural spray oil every 14 days from fruit set to grape string formation. After the formation of grape bunches, the control effect on powdery mildew on grape bunches is common, but it can cure downy mildew.
In Australia, integrated pest control based on agricultural spray oil has been widely used in a variety of crops, especially on citrus. At present, many orchards spray one or two agricultural spray oils every year, which can solve the problem of pest control. It is estimated that the cost of pesticides saved is between $400 and $1000 per hectare per year. The integrated control method began to be applied in apple production. The use of 50 times of agricultural spray oil can control apples with full claws for up to 3 months. The control effect of using 100 times of agricultural spray oil is equivalent to the control effect of cockroaches and speed mites on mites and scale insects. As a comprehensive control measures for the two-spotted spider mites, it is recommended to use 200 times of agricultural spray oil and release predatory mites. On pears, plums and apricots, agricultural spray oil is used to control scale insects, mites and mites. Agricultural spray oils are currently used on flowers, vegetables and cotton.
In Italy, the use of agricultural spray oil on citrus began in 1940, and the current use is 7,000 tons, accounting for 12% of citrus. Mainly used to control scale insects, mites and leaf miner. In Japan, it has been successfully used to control citrus red spiders, scale insects, rust spiders, rickets and resin diseases. In New Zealand, agricultural spray oil is mainly used to control kiwifruit scale insects.
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