Paclobutrazol is a plant growth regulator that delays plant growth, inhibits stem elongation, shortens internodes, promotes tillering, increases plant stress resistance, and increases yield. Applicable to rice, wheat, peanuts, fruit trees, tobacco rapeseed, soybeans, flowers, lawns, etc. (plant), the effect is remarkable.
The use of plant growth regulator paclobutrazol in actual agricultural production is as follows:
First, control growth, lodging resistance
Corn: Soaking seeds should be lightly soaked, soaked for 10 to 12 hours before sowing, 1kg of seed plus 1.5g of 15% paclobutrazol wet powder plus water 100g, once every 3 to 4 hours.
Wheat: Sprayed 40g of 15% paclobutrazol wet powder to 50kg per 667m2 in the first stage of the wheat seedling, from the wheat to the jointing.
Rapeseed: For the cultivation of short-legged and strong seedlings, in the seedbed, the level of fertilizer and water is high, sowing early, and the seedling bed with high density is 3 to 4 leaves, and 40g of 15% paclobutrazol can be sprayed with 50kg of water per 667m2.
Peanut: 50g of 15% paclobutrazol WP can be sprayed with 50kg of water per 667m2 during full bloom.
Cotton: In the medium term, 50g of 15% paclobutrazol wet powder is sprayed with 50kg of water per 667m2.
Rice: In order to cultivate the strong cockroaches to prevent lodging, the age of cockroaches is about 35 days. In the single season, the middle and late rice fields are sprayed with 175-200g of 15% paclobutrazol WP of 100kg per 667m2 for 25 days before transplanting. The high-yield field is partially prosperous and high-stalked and easy to fall. It is sprayed with 175-200g of 15% paclobutrazol wettable powder and 100kg of water per 667m2 30-40 days before heading.
Soybean: 60g of 15% paclobutrazol wet powder and 50kg of water per 667m2 of flowering.
Potato: When the plant height is 25-30 cm, 60 g of 15% paclobutrazol wet powder is sprayed with 50 kg of water per 667 m2.
Watermelon: When planting seedlings, it can spray 50~100mg/L liquid medicine on the cotyledon of watermelon or about 60cm in the extension of vines. It can be used to control the growth of plants.
Zucchini: After 3 to 4 true leaves are unfolded, spraying with 4 to 20 mg/L of liquid medicine can shorten the internodes, thicken the leaves, increase cold resistance and disease resistance.
Pepper: When the seedlings are 6 to 7 cm, spray with 10 to 20 mg/L of liquid medicine.
Eggplant: When 5 to 6 true leaves are used, foliar spraying with 10-20 mg/L pesticide solution can make eggplant strong seedlings.
Second, control
Apple: In the autumn branch, each plant is sprayed with 15~20915% paclobutrazol wettable powder, or the new shoot is 5-10cm, sprayed with 15% paclobutrazol wettable powder 500-700 times water for 10 days, for a total of 3 times. .
Pear: The new shoot is as long as 5 to 10 cm and sprayed with 15% paclobutrazol wet powder 500-700 times water for 10 days, for a total of three times.
Peach and Hawthorn: Under the autumn or spring branching, each plant 10~15g is applied with 15% paclobutrazol.
Citrus: 15% paclobutrazol wet powder 150 times with water foliar spray at the end of summer.
Cherry: Each plant uses 15% paclobutrazol wet powder 4-6g soil.
Mango: In the first half of May, 15 to 20 g of 15% paclobutrazol can be mixed with 15-20 kg of water per plant, and the ring groove is applied.
Tobacco: 60g of 15% paclobutrazol WP can be sprayed with 50kg of water per 667m2 in the 5-7 leaf stage.
Litchi: In mid-November, the leaf surface was sprayed with 15% paclobutrazol wet powder 750 times water.
Grape: Spray 1000-2000mg/L liquid at the end of the flowering stage. It can inhibit the length of the main shoots and the secondary shoots and increase the yield.
Jujube: Spraying the whole tree with 2000~2500mg/L liquid in the 8~9 leaves before flowering can increase the fruit setting rate and increase the yield.
Chestnut: If the chestnut grows too much, it will be sprayed with 300mglL in July, which can control the flowering effect.
Third, the shaping of ornamental plants
Antirrhinum: Spray the seedling leaves with a concentration of 50-500mg/L, and spray again after 10-15 days, which can make the plants low and thick, deepen the leaf color, thicken the leaves and enhance the ornamental value.
Dahlia: After the topping, the potted dahlia is sprayed with a concentration of 200mg/L, which can inhibit the elongation of the new shoots, make the plants dwarf, the branches are thick and the flowering period is consistent.
Clove: After 7 days of planting, the soil is watered with 20mg/L liquid, and the second time after 30 days, it can promote the beautiful appearance of the side branches.
A string of red: spraying the leaf surface with a concentration of 500mg/L, can significantly shorten the plant and effectively enhance its ornamental value.
Osmanthus fragrans: Spray on the foliar surface before the spring shoots every year. The concentration is 800mg, /L liquid, which can make the new leaves become smaller and thicker, the internodes are shortened, the plants appear compact and durable, and the ornamental value is greatly improved.
Rose: After pruning, when the new shoots grow to 5-10 cm, the soil is watered with a storage capacity of 300 mg/L sputum to prevent the branches from growing.
Wenzhu: Spraying the bamboo with a concentration of 20mg/L, it can dwarf the vegetable and make the leaves dark green.
Radish: In the initial stage of the formation of radish fleshy roots, the use of paclobutrazol 100-150mg/kg can effectively prevent the plant from growing and make the leaves deeper, the leaves are short and stand up, increase photosynthesis, promote the transport of photosynthetic products to fleshy roots, and obviously increase yield. .
Precautions
(1) Paclobutrazol has a long residual period, and the field should be deeply cultivated after harvesting to avoid inhibiting the crops.
(2) Try not to contact with skin and eyes. If splashed in the eyes, rinse with plenty of water and wash the skin with soap. Mistaken should prompt vomiting and sent to hospital for treatment.
The article was published by the China Pesticide Network , please indicate the source!
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