Application of Plant Growth Regulator in Soybean

- Aug 07, 2018 -

1. Promote rooting

Gibberellin and kinetin. In the high latitudes of the north, low temperatures often prolong the germination process of soybeans and reduce the germination rate, that is, the lower the temperature, the lower the germination rate. At the same time, low temperature will increase the chance of infection of soybean sprouts, reduce the survival rate of seedlings, and make the plants grow uneven. Soaking the seeds with 3.5 mg/L gibberellin solution or 1 mg/L kinetin solution can increase the fresh weight and dry weight of the young seeds, and the promotion effect of gibberellin is particularly obvious.

Triacontanol. Soaking the seeds with a concentration of 0.5 mg/L triacontanol solution for 4 hours can increase the germination rate of soybeans and increase the number of beans.

2. Increasing yield

Brassinolide. Brassinolide can increase the activity of nitrate reductase in soybean seedlings, increase the absorption and transformation of nitrate fertilizer, increase plant height and material accumulation, and improve crop resistance to adverse environment. On this basis, when the soybeans grow out, the leaves are sprayed with 0.01 mg/L the liquid. After 6 days, the height of the plants increases by 10% to 15%, and the fresh weight of the roots increases by 40%-60%. Foliar spraying with 0.15% suspension of brassinolide in the flowering stage of soybean can improve the lodging resistance and increase the yield by 7%-12%.

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