Common fruits and vegetables cucumber, banana, pear, citrus scab how to prevent and cure? What kind of medicine should I take?

Scab is a quarantine disease, which not only harms cucumber, but also harms zucchini, melon, pumpkin, banana, pear, citrus and so on. Then how to prevent and cure scab? What kind of medicine should I take?

How to prevent and cure cucumber, banana, pear and citrus scab?

Cucumber:

(1) selecting disease-resistant varieties.

(2) rotation with non-melon crops.

(3) strengthen cultivation management, scientifically control temperature and humidity, and adopt techniques such as plastic film mulching and drip irrigation.

(4) leave seeds from disease-free plants, keep seeds from disease-free sheds and disease-free plants, and use frozen filter paper method to test whether the seeds carry bacteria.

(5) 10 days before planting in greenhouse and greenhouse, 0.13 kg of sulfur powder and 0.25 kg of sawdust were used for every 55 cubic meters of space, and then placed in several places, lit and sealed in the greenhouse for one night.

(6) strengthen field management, pay attention to planting density, raise greenhouse temperature, adopt water-saving techniques such as plastic film mulching and drip irrigation, and release air in time.

In order to reduce the humidity in the greenhouse and shorten the condensation time on the leaf surface, the occurrence of scab can be controlled.

Banana:

The main results are as follows: (1) strengthen orchard management, rational fertilization and irrigation, and enhance tree potential. Bagging to protect fruit, in the fruit hanging period after budding, using plastic film to cover the fruit (bag mouth downward), can reduce the fruit disease.

(2) Fruit bagging can prevent Rain Water from spilling and isolate bacteria. Before and after bagging, fungicides are sprayed 1 and 2 times respectively, and the effect is better. As the rainy season is mostly a period of high temperature, the film bag had better open an orifice with a diameter of 0.5 cm per 100 square centimeters to dissipate heat, tighten the fruit shaft at the upper end, open the lower mouth to breathe, and use rice straw to protect the shade ear from sunburn fruit; you can also add a fiber bag to the film bag.

(3) clear the garden in time: keep the garden clean, remove weeds in the garden, cut off withered stems and leaves and seriously infected banana leaves and fruits, burn them out of the garden, and reduce the source of the disease. Dig the drainage and irrigation ditch of the banana garden in time to achieve the drainage and energy irrigation, and pay attention to check the banana plant, remove the excess sucking buds, reduce the humidity of the banana garden, make the border surface loose and dry, in order to facilitate the plant growth.

(4) strengthen the care of banana plants: no partial application of nitrogen fertilizer, especially before and after budding, banana plants should apply less nitrogen fertilizer and increase organic fertilizer and potassium fertilizer to promote the growth of plants and young fruits.

(5) Prevention of modern green pollution-free traditional Chinese medicine preparation.

Pear:

(1) selecting disease-resistant varieties. There are great differences in disease resistance between pear species and varieties. In general, pears in Chinese system (white pear system and Qiuzi pear system) are the most susceptible, followed by Japanese pear and western pear. The varieties with serious disease include Yali pear, Qiubai pear, Jingbai pear, Huagai pear, an pear, followed by Laiyang pear, Dangshan pear and Xuehua pear, etc., and Mi pear, fragrant pear, Taihuang pear, Xiyang pear and Ba pear have strong disease resistance.

(2) clear the source of the disease. The fallen leaves and fruits were removed in late autumn and early winter, and the diseased shoots were removed by pruning before germination of pear trees in early spring, and the branches were centrally burned or sprayed with 5-7% urea solution or ammonium sulfate solution plus 0.1-0.2% benzoammonium solution during pear bud expansion. The removal of diseased shoots and diseased flower clusters in the early stage of the disease can also promote flower buds to form the base of ringed branches in the middle of May, the ratio of width to branch thickness is 1:10, reaching to xylem, and the adjusted medical tetracycline tablets are filled with ring peeling mouth, and then wrapped strictly with plastic strips, pear scab can be effectively controlled.

Citrus:

(1) Agricultural prevention and control. Formula fertilization, low-lying waterlogged land pay attention to drainage. Remove overdense village branches and leaves when pruning. The combination of pruning in late autumn and early winter, cutting off diseased branches, diseased leaves, and removing fallen leaves and fruits, while spraying Baume 1-2 degree stone sulfur mixture.

(2) physical control. Check carefully during the storage period, remove the diseased fruit in time, and control the pit temperature at 1 ~ 2 ℃.

What medicine does cucumber, banana, pear, citrus scab hit?

Cucumber:

The main results were as follows: (1) in the early stage of the disease: botanical fungicide 50-70ml + garlic oil 15ml + foliar fertilizer 25ml + organosilicon 5g with water 30jin, spray, spray once every 3 days, spray for 2-3 times, and change to prevention after control.

(2) in the middle and later stage of the disease: green organic planting drug scheme: botanical fungicide 100-250ml + garlic oil 15ml + organosilicon 5g with 30 jin of water, sprayed once every 3 days for 2-3 times, and then changed to prevention after control.

Banana:

Leaves and young fruits were sprayed with plant growth regulators such as Gaomeishi, Shengduosu and Penshibao to enhance tree potential and disease resistance. When the young banana fruit is combed, the medicine is used uniformly to control diseases and insect pests, then the fruit is bagged with blue special banana film and covered with 1 or 2 layers of papyrus, tighten the mouth of the upper bag and open the lower bag to protect the growth of the young fruit and reduce bacterial infection.

Pear:

(1) Prevention plan: before the onset of the disease, 20% silazomiramine 600-800 times or 56% pyrimethrin chlorothalonil was diluted and sprayed at 800 times, once every 15 days.

(2) treatment plan: when the disease is mild, 20% silazolipramine is sprayed with 800 times dilution, and once every 15 days; when the condition is serious, it is diluted according to Liangguoan 150ml 300 times solution, and sprayed once every 5-7 days.

(3) spray the pear tree before and after blossom 1-200-fold Bordeaux solution or 30% Ludebao glue suspension 300-500 times. The varieties which are sensitive to Bordeaux liquid and copper preparation can choose oil emulsion (scale mites): mancozeb: water = 10 mancozeb: water = 10-1-15-5 can effectively control pear scab and control pear planthopper. In addition, you can choose 20% silazolipramine 600-800 times or 56% chlorothalonil 800 times. 50% thiophanate methyl (methyl thiophanate methyl) wettable powder or 1500 times carbendazim wettable powder, 25% carbendazim wettable powder, 50% carbendazim, 50% carbendazim In order to increase the adhesion of the liquid and reduce the scour of Rain Water, a leather glue equivalent to the amount of the solution of 1000-1x4000 or 0.5kg of pine soap or 0.1-0.2% of "6501" adhesive can be added to the solution. Spray evenly so that both sides of the fruit and leaves can be sprayed. Recently, it has been reported that spraying 80-1000 times of Nova emulsion at the initial stage of the disease has an outstanding effect on the prevention and control of pear scab. It can conserve water and green the environment.

Citrus:

Spray 0.5 ∶ 1 ∶ Bordeaux solution after falling flowers, or more than 40%? Sulfur suspension 600x liquid, or 50% carbendazim wettable powder 1500 times liquid, or 50% thiophanate methyl wettable powder 500x liquid, or 50% carbendazim wettable powder 1500 times liquid. Spray once every 15 days for 3 or 4 times.

Time: 2019-04-09 Click: