Rice Planting Time, Growth Cycle, and Peak Pesticide Application Periods
Rice originated in tropical Asia. After being widely cultivated in China, it gradually spread around the world, and it is also one of the main food crops in our country. According to different methods, rice can be divided into indica rice and japonica rice, early rice and late rice.
The planting time of rice also differs from place to place. Some are one season with one harvest, and some are two seasons with one harvest. North China is single-season, and single-season rice must be sown before Qingming, while in the south the second season is roughly sown around late June to early July.
The first season of double-season rice in the north has a growth period of 104 days, and the second season of rice has a growth period of 87 days. Both are generally early-maturing varieties, avoiding winter. In the south, it is roughly sown in mid-April, transplanted in early May, and harvested in late July, immediately followed by late rice transplanting, which generally must be completed before the Start of Autumn, with late rice harvested from late October to November.
When it comes to planting rice, pesticides are unavoidable, to prevent rice planthoppers, rice leaf rollers, and rice stem borers. So before discussing when the most pesticides are applied, you first need to know that pesticide application is divided into several types. Generally speaking, pesticides are divided into herbicides and insecticides, with weed control in the early stage and insect control in the later stage. Different stages require prevention and control based on different major pests. Because climate and environment differ from place to place, the timing and concentration used also differ, but it is generally based on prevention, and application should be done before pests, diseases, and weeds occur.
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