Plant growth regulators can improve and regulate plant growth, artificially interfere with the harm brought by unfavorable factors to plants, promote robust growth and increase yield.
1. Sodium Nitrophenolate
Plant cell activator, can promote germination, rooting, and relieve plant dormancy. It has a significant effect on cultivating strong seedlings and improving the survival rate after transplanting. And can promote plants to speed up metabolism, increase yield, prevent flowers and fruits from falling, and improve fruit quality. It is also a fertilizer synergist, which can improve the utilization rate of fertilizers.
* Solanaceous vegetables: soak the seeds with 1.8% water solution 6000 times before sowing, or spray with 0.7% water solution 2000-3000 times during the flowering period to improve the fruit setting rate and prevent flowers and fruits from falling.
*Rice, wheat and corn: Soak seeds with 6000 times of 1.8% water solution, or spray with 3000 times of 1.8% water solution from booting to flowering.
2. Indoleacetic acid
A natural auxin that is ubiquitous in plants. It has a promoting effect on the top formation of plant branches, buds and seedlings. Indoleacetic acid can promote growth at low concentrations, and inhibit growth or even death at medium and high concentrations. However, it can work from seedlings to maturity. When applied to the seedling stage, it can form apical dominance, and when applied to leaves, it can delay leaf senescence and inhibit leaf shedding. Applying to the flowering period can promote flowering, induce parthenogenetic fruit development, and delay fruit ripening.
*Tomato and cucumber: spray with 7500-10000 times liquid of 0.11% water agent in seedling stage and flowering stage.
*Rice, corn and soybean are sprayed with 7500-10000 times of 0.11% water agent in seedling and flowering stages.
3. Hydroxyene adenine
It is a cytokinin that can stimulate plant cell division, promote the formation of chlorophyll, accelerate plant metabolism and protein synthesis, make plants grow rapidly, promote flower bud differentiation and formation, and promote early maturity of crops. It also has the effect of enhancing plant resistance.
*Wheat and rice: Soak seeds with 0.0001% WP 1000 times solution for 24 hours and then sow. It can also be sprayed with 500-600 times liquid of 0.0001% wettable powder in the tillering stage.
*Corn: After 6 to 8 leaves and 9 to 10 leaves are unfolded, use 50 ml of 0.01% water agent per mu, and spray 50 kg of water once each to improve photosynthetic efficiency.
*Soybean: in the growing period, spray with 0.0001% wettable powder 500-600 times liquid.
*Tomato, potato, Chinese cabbage and watermelon are sprayed with 0.0001% WP 500-600 times liquid during the growth period.
4. Gibberellic acid
A kind of gibberellin, which promotes stem elongation, induces flowering and fruiting, and delays leaf senescence. The concentration requirement of the regulator is not too strict, and it can still show the effect of increasing production when the concentration is high.
*Cucumber: Use 300-600 times of 3% EC to spray during the flowering period to promote fruit setting and increase production, and spray 1000-3000 times of liquid during harvesting to keep the melon strips fresh.
*Celery and spinach: Spray 1000-3000 times of 3% EC 20-25 days before harvest to promote stem and leaf growth.
5. Naphthalene acetic acid
It is a broad-spectrum growth regulator. It can promote cell division and expansion, induce adventitious roots, increase fruit set, and prevent shedding. It can be used in wheat and rice to increase effective tillering, increase the rate of ear formation, promote grain filling and increase yield.
*Wheat: Soak seeds with 2500 times of 5% water solution for 10 to 12 hours, remove them, and air-dry them for sowing. Spray with 2000 times of 5% water agent before jointing, and also spray with 1600 times of liquid when blooming.
*Tomato: 1500-2000 times liquid spray can prevent flower drop during the flowering period.
6. Indole butyric acid
It is an endogenous auxin that promotes cell division and growth, induces the formation of adventitious roots, increases fruit set, and changes the ratio of female and male flowers.
*Tomato, cucumber, pepper, eggplant, etc., spray flowers and fruits with 1.2% water 50 times liquid to promote fruit setting.
7. Triacontanol
It is a natural plant growth regulator with a wide range of applications. It can increase dry matter accumulation, increase chlorophyll content, increase photosynthetic intensity, increase the formation of various enzymes, promote plant germination, rooting, stem and leaf growth and flowering, and make crops mature early. Improve seed setting rate, enhance stress resistance, and improve product quality.
*Rice: Soak seeds with 0.1% microemulsion 1000-2000 times for 2 days to improve germination rate and yield.
*Wheat: Use 2500~5000 times of 0.1% microemulsion to spray twice during the growth period to regulate growth and increase yield.
Post time: Jul-25-2022