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Paclobutrazol is a plant growth regulator and fungicide , and is a plant growth retardant, also known as an inhibitor. It can increase the content of chlorophyll, protein and nucleic acid in plants, reduce the content of erythrotoxin and indole acetic acid, increase the release of ethylene, increase the resistance to lodging, drought, cold and disease, increase yield, improve quality and Improve economic efficiency. It is low in toxicity to humans, livestock, poultry and fish, and plays an important role in increasing production and quality in vegetable production.

Cultivate strong seedlings

When the vegetables such as eggplant, melon and other vegetables are long in the seedlings, they can spray 200~400ppm of liquid medicine 50~60kg per acre in the 2~4 leaf stage, which can prevent the production of "high-footed seedlings" and breed short-stem seedlings. For example, when cucumber seedlings are raised, the seedlings of the 1st and 1st hearts are sprayed or watered with 20 mg/L of paclobutrazol in the seedlings, which can improve the quality of the seedlings and raise the short seedlings.

When peppers are raised, in the 3~4 leaf stage of the seedlings, spray with 5~25 mg/l of paclobutrazol to cultivate strong seedlings. When the tomato is seedling, when the seedlings are sprayed with 10~50 mg/l of paclobutrazol in the 2~3 leaf stage, the plants can be dwarfed to prevent the lengthening.

Autumn tomato 3 leaf stage, sprayed with 50~100 mg / liter of paclobutrazol solution, can cultivate strong sputum.

In tomato seedlings, 3 leaves and 1 heart were sprayed with 10 mg/liter of paclobutrazol solution.

When eggplant is raised, it is sprayed with 10~20 mg/L of paclobutrazol solution at 5~6 leaves, which can dwarf the seedlings and prevent the lengthening.

When the cabbage is seedling, spraying with 50-75 mg/L of paclobutrazol at 2 leaves and 1 heart can make the seedling grow robust and grow into a short and strong seedling.

Controlling

Before planting, the pepper is immersed in the 100 mg/L paclobutrazol solution for 15 minutes, then transplanted, and sprayed with 25 mg/L or 50 mg/L paclobutrazol solution about 7 days after planting; Spraying 200 mg/L of paclobutrazol solution can all receive dwarf plants and prevent the effects of lengthening.

In the early stage of growth, the green beans are sprayed with 50-75 mg/L of paclobutrazol solution, which can improve the population structure, enhance photosynthesis and prevent the length of the main stem, thereby increasing the number of main stems by 5%~10%, and increasing the pod-forming rate by about 20%. .

When edamame is sprayed with 50~75 mg/L of paclobutrazol in 5~6 leaves, it can make the stem thick, the internodes shorten, promote branching, and steady growth is not long.

When the plant height is 40~50 cm, it is sprayed with 300 mg/L of paclobutrazol solution from the beginning of August to the beginning of September. It can be sprayed once every 10 days and sprayed 2~3 times to control the length.

Tomatoes are sprayed with 25 mg/L of paclobutrazol solution about 7 days after transplanting; sprayed with 75 mg/L of paclobutrazol solution after slowing down, can prevent the growth of plants and promote dwarfing of plants.

In the 3-leaf stage, the laver moss is sprayed with 200 mg/L of paclobutrazol solution, which can control the length of the appendage and increase the yield by about 26%.

Increase production

Roots and leaves of vegetables in the seedling stage or prolonged period, spraying 200~300ppm of paclobutrazol 50kg per acre can promote vegetable leaf thickening, internode shortening, plant stout, improve quality and increase yield. For example, before the picking, the cucumber is sprayed with 400 mg/liter of paclobutrazol, and the yield is increased by 20%~25%.

The four-leaf stage of greenhouse cucumber in the greenhouse, sprayed with 100 mg / liter of paclobutrazol solution, shortened internodes, compact plant shape, thick stem growth, increased resistance to powdery mildew, downy mildew, increased cold resistance, increased fruit set rate The yield increase is about 20%.

In the 3~4 leaf stage, the cabbage is sprayed with 50~100 mg/l paclobutrazol solution, which can dwarf the plant and increase the seed collection by 10%~20%.

When radish is sprayed with 45 mg/L of paclobutrazol in 3~4 true leaves, it can enhance the resistance and reduce the incidence rate. In the period of fleshy root formation, spraying with 100 mg/L of paclobutrazol can inhibit the growth of the plant. Inhibition of bolting, the leaves of the plants are green, the leaves are short and standright, enhance photosynthesis, promote the transport of photosynthetic products to the fleshy roots, and increase the yield by 1~20%, which can prevent the heart and improve the commerciality.

When the edamame is sprayed with 100~200 mg/L of paclobutrazol from the initial flowering to the full bloom period, the effective branching, effective pod number and pod weight can be increased, and the yield is increased by about 20%. When the vine climbs to the top of the rack, it is sprayed with 200 mg/L of paclobutrazol. If it grows too much, it can be sprayed once every 5~7 days, even if it is sprayed 2~3 times, it can inhibit stem and leaf growth and promote germination of side branches. Flower buds develop, tuber enlargement, increase yield by about 10%.

Promote early results

The application of nitrogen fertilizers in vegetable fields is excessive, or the shade of vegetables is insufficient, or the humidity of vegetables in protected areas is high at night, which often causes the stems and leaves of vegetables to grow long, affecting reproductive growth and fruit setting. 50 kg of 200 ppm liquid can be sprayed to prevent Stems and leaves are long, promote reproductive growth and have early results. During the formation of fleshy roots, foliar application of 100-150 mg / liter of paclobutrazol, 30 ~ 40 liters per acre, can control the growth of the aboveground part, promote the meat root hypertrophy, pay attention to the drug concentration should be accurate, spray should be even. Promote fruit ripening. After the fruit is finished, spraying with 500 mg / liter of paclobutrazol can inhibit vegetative growth and promote fruit ripening.

Precautions

Strictly control the amount of medication and the duration of medication. If the whole plant is sprayed, in order to increase the adhesion of the liquid, an appropriate amount of neutral detergent can be added to the solution. If the dosage is too large and the concentration is high, the crop growth is inhibited, and the quick-acting fertilizer can be added, or the gibberellin (nine-two-O) can be used to alleviate, 0.5 to 1 gram per acre, and spray 30-40 kg of water.

More pesticide encyclopedia, please pay attention to China Pesticide Network

(Source: Good Agricultural Resources Network)

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