Bagging prevents nectarine cracking

The nectarine peel has poor toughness and the flesh cells are tight. Unlike the peach tissue, it is soft and has a certain buffering effect. In sudden rain or even rainy weather, the pulp cells expand rapidly and are prone to fruit cracking. Especially in hot and sunny weather, the nectarine fruit surface temperature is high, in case of rainfall, sudden changes in temperature, more likely to cause cracking. Most nectarine varieties are susceptible to cracking and sunburning in the high temperature and humidity conditions in the south. In particular, some cracked fruit varieties have more severe fruit cracking at maturity.

In the South, nectarine varieties that can avoid the rainy season during ripening should be selected, for example, early maturing varieties should be selected to make nectarines mature before the rainy season. You can also choose to cultivate without cracking or lighter cracking. Applicable varieties are early rubies, twilight and so on.

Rational irrigation can reduce cracking. Irrigation has a certain effect on the moisture content of the pulp cells. If it can maintain a certain amount of moisture, it can reduce or avoid cracking. Drip irrigation is the ideal irrigation method. It can provide relatively stable soil moisture and air humidity for the growth and development of nectarine, which is conducive to the steady increase of pulp cells and reduce cracking.

Thin branches and drooping branches at the lower part of the canopy result in more fruit cracks. Trimming these fruiting branches during pruning can reduce the rate of fruit cracking, and at the same time can save nutrients and improve the ventilation and light transmission conditions of the tree.

Bagging on fruits is the most effective measure to prevent cracking of nectarines. Bagging adds a layer of protection to the nectarine fruit. No matter how the weather changes, the fruit is in a relatively stable environment, which can reduce the cracking fruit, at the same time, it can also avoid pest damage and improve the quality of the fruit. The bagging is carried out after fruit thinning and is completed before the main pests of the fruit of the region enter the fruit, usually in late April. Spray a mixture of broad-spectrum insecticide and fungicide before bagging. A triangular bag or a square bag can be made of old newspapers, one end of which is open, sleeved on a fruit, and the bottom is tightened and fixed to the branch with a thin thread. The paper bag is torn from the bottom during the fruit coloring period.

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