What kind of pesticide is used to change male pear into female pear

As we all know, when choosing pears, you should choose mother pears, which will taste better. But some people say that some fungicides on the market can turn male pears into female pears. What on earth is going on? What kind of pesticide does male pear weave mother pear use?

In fact, there is no so-called pesticide to turn a male pear into a female pear. The so-called difference between a male pear and a female pear is actually what ordinary people call it. In fact, because the sepals of the male pear do not fall off, the sepals of the female pear fall off relatively clean.

Why can some pears fall off their sepals after flowering while others can't? This is related to the differentiation quality of flower buds. The more thorough the flower bud differentiation and the higher the quality, the more thoroughly the sepals will fall off.

On a tree or on a branch, due to the different position of the buds, the nutrients obtained will be different, and the quality of differentiation will be high and low, which is called the heterogeneity of buds. In the inferior position, the flower bud differentiation is not complete, incomplete, the most likely to become a "male pear".

As you can see on the tree, the two adjacent pears, one male and one female, are caused by the different parts of the buds. Therefore, in pruning, we must balance the tree potential and update the fruiting branches in time. It is best not to retain the inferior branches, such as the lower back branches, and the senescent fruit branches.

In some pear orchards, it is shown as "male pear" for more than a year and less than a year. This is related to fertilization and climate, insufficient fertilization or abnormal climate at flowering stage will affect flower bud differentiation, and there will be more "male pears" in the second year. Therefore, strengthening fertilizer and water management is also an effective means to reduce the proportion of "male pear".

It is normal for pear trees to have "male pear" and "female pear". Like most fruit trees, if the quality of flower bud differentiation is not good, abnormal fruits will be formed. "male pear" is actually a kind of deformed fruit. When the quantity is small, it is best to be thinned, and when the quantity is large, efforts should be made on fertilizer and water and pruning.

Male pear is not infected by bacteria, and there is no medicine that can turn male pear into female pear. In one case, when a fungicide is used after anthesis, the cells in the original "male pear" and calyx depression divide rapidly and gradually change from tip to circle, which does show the phenomenon of "male changing into female".

The greatest possibility is that the fungicides used caused physiological and biochemical reactions within the tree and promoted cell division in the calyx depression of the fruit. For example, the snake fruit in the United States is originally a new red star variety, but after the use of elongate, the fruit becomes high and protruding.

In short, the use of fungicides can make "male pears into female pears", there is no final conclusion, can not rely entirely on fungicides to reduce the proportion of "male pears".