【1】English common name B9, daminozide, SADH, Alar, Kylar (Uniroyal), N-DMASA, B995, Alar -8

【2】Chemical name N , N ﹣dimethylsuccinylhydrazide acid

【3】CAS No. 1596-84-5

【4】Molecular formula C6H12N2O3

【5】Relative molecular mass 160.17

【6】Physical and chemical properties

The pure product is white powder with slight odor, melting point is 154~156℃, easily soluble in water, methanol, propanol, insoluble in hydrocarbon compounds; it decomposes in hot acid and alkali.

【7】Toxicity Low toxicity

【8】Main dosage forms: 98%, 99% butyryzide original drug, 50%, 92% butyryzide soluble powder

【9】Features

Butyrazide is a succinic acid plant growth retardant, which can not only affect the biosynthesis of endogenous gibberellic acid, but also inhibit the biosynthesis of auxin. It can be absorbed by roots, stems and leaves. In leaves, the palisade tissue of leaves can be elongated, the sponge tissue can be loosened, the content of chlorophyll can be increased, and the photosynthesis of leaves can be enhanced. It can also inhibit the division of the apical meristem, shorten the internode distance, and inhibit branch elongation. It can be used as dwarfing agent, fruit setting agent, rooting agent and coloring agent.

【10】Applied technology

1.Promote rooting and improve the survival rate of transplanting

Sweet potato

The seedlings were soaked in 2500 mg/L liquid for 5-8 min before transplanting, which could promote rooting and improve the survival rate.

Dahlia, Geranium, Chrysanthemum, Poinsettia, Dianthus, Tea, etc.

Soaking the base of cuttings with 1000-5000 mg/L liquid medicine for 0.5 min can promote rooting and improve the survival rate of cuttings.

2.Cultivate strong seedlings to improve stress resistance

Tomato

Seed soaking treatment with 6000-9000 mg/L butyryl hydrazide solution for 24 h can increase the chlorophyll content, root-shoot ratio, vigorous seedling index, root activity and enzyme activity of true leaves of seedlings, and can significantly improve the stress resistance of tomato seedlings. Conducive to the cultivation of strong tomato seedlings.

Melon

Soaking seeds with 12000 mg/L butyryl hydrazide liquid for 1 h can dwarf the seedlings, prevent the seedlings from growing too long, improve the quality of the seedlings, cultivate robust seedlings, and increase the index of strong seedlings.

Squash

After 3~4 true leaves are unfolded, foliar spraying with 1000~2000 mg/L can shorten the internodes, thicken the leaves, increase the greenness, resist cold and drought.

Marigold

When there are 3~4 true leaves, irrigate the roots with 6000 mg/L butyryzide liquid once, which can inhibit the accumulation of dry matter in the whole plant, promote the accumulation of unit fresh weight, improve the enzyme activity, and increase the content of chlorophyll and soluble protein. , which is conducive to the improvement of later viewing.

Petunia

Using 1500 mg/L butyrhydrazide liquid to spray plug seedlings can prevent leggy seedlings, improve the quality of seedlings and cultivate robust seedlings.

Bunch of red

In the 2-leaf 1-heart stage, spraying 2500-5000 mg/kg butyryzide liquid for 1-2 times can shorten the internode spacing, thicken the leaves, harden the texture, and advance the flowering period.

3.Control prosperous growth and increase production

Rice

The foliar spray of 4500-7000 mg/L liquid medicine can promote dwarfing, resist lodging, and increase cold and drought resistance during the differentiation stage of young panicles.

Peanut

In the initial stage of acupuncture, spray the whole plant with 1000-1500 mg/L liquid medicine once to dwarf the plant shape and promote yield increase.

Edamame

Before and after flowering, spraying with 1000~2000 mg/L liquid medicine can make the plants short and strong, full of fruit, and increase the yield by 10%~70%.

Cucumber

When there are 3~4 leaves, spray the leaves twice with 400~2000 mg/L liquid medicine or irrigate the roots with 200 ml per plant, which can make the plants dwarf, the leaves are dark green, the leaves are firm, the female flowers are born early, and the early yield is improved.

Melon

Spraying 1000 mg/L or 250-500 mg/L for root irrigation in the early stage of fruiting can prevent melons from melting, control vigorous growth, and promote fruit setting.

Strawberry

After transplantation, spray 2~3 times with 1000 mg/L liquid medicine, with an interval of 14 days, which can promote fruit setting and increase yield.

Potato

When the potato pieces grow to 20-30 mm, 56g of active ingredients per acre are mixed with water and sprayed on the leaves, which basically has no major impact on the overall yield of potatoes, but can achieve the effect of even fruit and increase the yield of seed potatoes.

Ginseng

Spray once with 2000~3000 mg/L of about liquid when the leaves are unfolding to promote the growth of the underground part.

Radish

In the early stage of rhizome expansion, 2000~4000mg/L butyric hydrazide liquid is sprayed on the surface, which can inhibit the upper vegetative growth, promote the transfer of nutrients to the underground tuberous roots, promote the growth of tuberous roots, and achieve the purpose of increasing production and income.

Carrot

After thinning, spraying with a concentration of 500-1000 mg/L can promote the growth of fleshy roots or underground stems.

Lettuce

When there are 3~5 leaves, spray twice with 1000~3000 mg/L liquid medicine with an interval of 14d, which can inhibit leggy growth, promote stem thickness, and increase yield by 10%~30%.

Sesame

When topping, spraying with 1000 mg / L butyryl hydrazide liquid can replace manual topping, which can significantly increase the number of sesame seeds per capsule, the weight of each capsule and the ratio of grain to shell, and significantly reduce the seedling rate. Increase production.

Apple

21 days after full bloom, spray the plants with 1000~2000 mg/L butyryzide liquid or 500 mg/L butyryzide mixed with 500~1000 mg/L ethephon mixture, which can inhibit the growth of new shoots and facilitate fruit setting. and later puffing.

Pear

14d after full bloom and 21d before harvest, spray with 1000~2000 mg/L liquid medicine once each to prevent young fruit from falling off and fruit drop before harvest.

Grape

On the two grape varieties “Kyoho” and “Zaosheng Gaomo”, foliar spraying with 1000-2000 mg/L butyryl hydrazide solution after full bloom (when the new shoots are 6-7 cm) can inhibit the main shoots. And the growth of auxiliary shoots, while improving the single fruit weight and plant yield, early maturity.

4.Regulate the flowering period and improve the ornamental quality

Chrysanthemum

14 days after transplanting, spraying the whole plant with 2000~4000 mg/L liquid medicine 2~3 times can promote dwarfing and flower enlargement.

Phalaenopsis

In the flowering period, 1000-3000 mg/L of the medicinal solution was sprayed on the leaves or rooted for three times, with an interval of 7 days. The flowering period showed a trend of gradually delaying with the increase of the concentration. Thickness increased significantly, and spraying treatment was better than root irrigation treatment.

Sapindus

In the middle stage of leaf expansion, 100 mg/L butyryzide solution was sprayed 7 times on the foliar surface, with an interval of 7 days, which could make Sapindus mucus grow robustly, the plant height was obviously dwarfed, the stem was thickened, the leaf area was reduced, and the leaves were obvious. Thicker, darker green in color and increased chlorophyll content.

Shandandan

When the flower stems are drawn out 2~3 cm, spray the stems and leaves with 2500 mg/L butyridine hydrazide liquid, and treat once every 7 days until the buds appear. Significantly. The budding time can be delayed by 3~7d, and the flowering period can be shortened.

5.Promote coloration, early maturity

Apple

45-60 days before harvesting, spray the whole plant with 2000-4000 mg/L liquid medicine once to prevent fruit drop before harvesting and prolong the picking period; or 30 days before harvesting, use 1000 mg/L butyryl alone The liquid medicine or the combination of 600 mg/L ethephon and 20 mg/L naphthalene acetic acid can be used to spray the whole plant, which can reduce pre-harvest fruit drop, promote coloring, and increase the firmness of the fruit.

Peach

Spray fruit with 1000~2000 mg/L liquid medicine once before fruit ripening, which can promote coloring and early ripening.

Cherry

After full bloom, spray once with 2000~4000 mg/L liquid medicine, which can promote coloration, early ripening and uniform fruit

6.Promote freshness and prolong storage period

Lettuce

Spray the leaves with 60~120 mg/L before harvesting, and harvest after the liquid is dry, which can keep the leaves green and fresh.

Slippery mushroom

Soak fresh mushrooms with 2 mg/L butyrate hydrazide liquid for 10 min, take them out to dry and store them in plastic bags. Under normal storage conditions, it can prevent browning, delay senescence, and has a good effect on keeping fresh mushrooms.

Litchi

21 d before harvest, spraying lychee ear with 2000 mg/L butyryzide liquid can delay fruit ripening, and can delay harvesting for 9-11 d.

【13】Notes

①Butyrylhydrazide is a widely used plant growth regulator in foreign countries, but in the 1980s, people suspected that it had teratogenic effects, and some countries banned or restricted its use. According to the second evaluation conducted by the World Health Organization in 1992, it is considered that the product can be used when the unbalanced dimethyl hydrazine in the product is less than 30 mg/L, but it is necessary to ensure a certain safety interval, and it is forbidden to eat the freshly processed fruit.

②The better the water and fertilizer conditions, the more obvious the effect of using it for a long time. When the water and fertilizer conditions are seriously insufficient, the production will be seriously reduced.

③When the preparation is used, it should be used with the preparation. If the solution turns brown, it is forbidden to use.

④ It can be mixed with a variety of pesticides but not with alkaline substances, oils and copper preparations.