The application of plant growth regulators in modern agriculture.

Poa pratensis

【1】 Delay the growth and reduce the number of mowings

prohexadione calcium

3d after mowing, foliar spray with 100~600mg/L prohexadione calcium solution can be used throughout the growing season, which can reduce the height of new grass by 50% to 90%, significantly reduce mowing times, and not affect the Lawn damage. Among them, 500~600mg/L concentration is better.

Chlormequat Chloride

The application of 100mg/L chameleon spraying treatment can delay the growth rate of bluegrass, promote the accumulation of tiller and underground biomass, and the delaying effect is strengthened with the increase of the concentration, but the high concentration of chameleon will weaken Disease resistance of lawns and has a damaging effect on color.

Paclobutrazol

After the seedlings of the bluegrass “Best” variety planted in autumn were unearthed, 200 mg/L paclobutrazol was sprayed when the growth was resumed the following year. The results showed that the plant height of bluegrass decreased by 9.48 mm compared with the control 40 days after spraying, and the plant height inhibition effect was significant. Play a role in controlling length and dwarfing. Or on the day of grass cutting, 300-600mg/L paclobutrazol is sprayed on the leaves, 750kg per hectare, which can control the growth and reduce the number of cuttings, and the effect can last for 3 months.

Uniconazole

Soaking seeds with 20 mg/L liquid medicine for 24 hours may affect their germination potential, but has no effect on their germination rate. At the same time, it can promote tillering, increase leaf width, increase chlorophyll and protein content, and promote lateral growth, so it is beneficial to the growth of seeds. and increase the plant’s resistance to stress. During the growth period, spraying 40-50mg/L of unconverted 3-4 times or 350-450mg/L of 350-450mg/L once can delay the growth rate of lawn, reduce the number of lawn mowing, and reduce the pruning and management. At the same time, it can increase the drought resistance of plants, which is of great significance to lawn water-saving irrigation.

【2】Promote greening and increase viewing

Gibberellic acid

150mg/L gibberellic acid solution was sprayed on the 3rd day after the pruning of Bluegrass. After 7 days of treatment, the average growth height of turfgrass plants was 13.2 cm higher than that of the control. 20d, the time of turning green was 10 days earlier than that of the control group; in the early stage of turning green, 30-42.5mg/L gibberellic acid, 750kg per hectare of liquid foliar spray of bluegrass, and combined with water and fertilizer management, can speed up lawn growth, Complete the rejuvenation process early.

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Gibberellin GA3,Cytokinin,Rooting Hormone,Fruit Coloring,Plant Growth Inhibitor

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