The latest mango dew spot control measures

Mango will appear a dew spot disease in the growing period, its disease characteristics show a "dew"-like disease spot on the fruit surface, and it is very obvious that the dew accumulates in the disease spot in the morning. So how to prevent and cure the mango dew spots? Come and have a look with the editor.

Symptoms of the disease

The disease mainly occurs in the fruit harvest period. At the initial stage of the disease, there are water-stained spots on the fruit surface, and the size of the spot is irregular. When the humidity is high in the field, the green mold layer will appear on the spot. The disease has little effect on the flesh quality of the fruit, but it will affect the appearance quality of the fruit. In serious cases, the whole fruit surface will be covered with dark brown stains, which will greatly reduce the commercial value of the fruit, sell poorly, and bring greater economic losses to farmers.

II. Prevention and control methods

1. Select varieties with strong disease resistance.

It is necessary to combine the local climate characteristics, select varieties with strong disease resistance according to local conditions, plant disease-free seedlings, and try not to mix varieties in different climatic periods.

2. Pruning

Mango should be pruned timely and reasonably after picking, and the cut should be smeared with preservative film after pruning to promote wound healing so as to prevent bacteria from taking advantage of it. Pruning at the same time, pruning all the over-dense branches, cross branches and disease and insect branches, thinning flowers and fruits at the same time, retaining the appropriate amount of fruit in the plant, and enhancing the permeability of the orchard.

3. Clear the garden

Before the mango blossoms, the diseased and dead branches should be cleaned thoroughly, and they should be burned or buried deeply, and the miscellaneous fruits and remnant flowers should be removed in time to keep the orchard clean.

4. Bagging

Bagging the fruit in time can reduce the probability of disease infection. Bagging is generally carried out during the second physiological fruit drop. Bagging should ensure that the folding of the bag mouth should be conducive to diversion, and the binding should be tight to prevent Rain Water from entering the bag.

5. Strengthen the management of fertilizer and water

Try to achieve formula fertilization, uniform tree nutrition, improve disease resistance, promote shoots and flowering neatly and orderly, in order to unified management. First, do a good job in orchard drainage and irrigation facilities, timely drainage in the rainy season to avoid stagnant water retting roots; second, increase the application of organic fertilizer to promote tree health, so as to improve its resistance and immunity; and third, pay attention to the application of micro-fertilizer to promote fruit pollination and reduce the chance of water droplets directly touching the pericarp.

6. Chemical control

Stone sulfur mixture or Bordeaux solution can be sprayed before pruning or flowering to prevent the occurrence of disease, or at the early stage of fruit hanging, internal fungicides such as carbendazim and chlorothalonil can be sprayed for protection.

The above is the introduction of the prevention and control measures of mango dew spots, hope to help you, want to know more related knowledge, please pay attention to us.