Can rice spray gibberellic acid (920) to promote heading?

Can rice spray gibberellic acid (920) to promote heading? Gibberellic acid, also known as gibberellin, 920, is a broad-spectrum plant growth regulator, mainly through leaves, twigs, flowers, seeds or fruits into the plant, and then transmitted to the active growth parts to play a role. The drug can promote cell elongation, cause stem elongation and plant height, relieve dormancy of seeds and tubers, promote germination, change the ratio of female to male flowers, affect flowering time, and reduce flower and fruit shedding. Gibberellic acid is often used in hybrid rice seed production to regulate flowering, promote maternal heading and prevent neck wrapping. Some studies have shown that spraying gibberellic acid promotes rice internode elongation, and its mechanism is to change the solution concentration between plant cells, which causes water to flow into the cells due to osmotic pressure, cell expansion and cell wall loosening, which leads to cell expansion and elongation. The concentration of gibberellic acid sprayed on rice varies with the severity of neck wrapping. If the spraying concentration is too high, it will lead to excessive length of panicle internodes and break. Spraying gibberellic acid at rice breaking and heading stage should be determined according to plant growth. If the growth of rice is normal, it should not be applied, lest the last section of rice plant is pulled out too long, causing lodging in the later stage; if the growth of rice is restrained, heading is difficult, and neck-wrapping phenomenon occurs, it can be sprayed appropriately. The above direct seeding rice fields were direct seeded with medium-maturing medium japonica rice from June 15 to 20, and some fields began to break and heading by September 1, and the growth of rice was basically normal. Do not spray gibberellic acid to promote plant heading. Click to get more rice planting techniques click to get more food crop planting techniques