Plant Growth Regulator Naa 1-Naphthylacetic Acid

Introduction:

Naphthylacetic acid is a kind of synthetic plant hormone. White tasteless crystalline solid.It is widely used in agriculture for various purposes.For cereal crops, it can increase tiller, increase the heading rate.It can reduce the cotton buds, increase the weight and improve the quality,can make the fruit trees bloom, prevent fruit and increase production,make the fruits and vegetables prevent falling flowers and promote root growth.It has almost no toxocity against mammals,and has no effect on Public Health.

Chemical property

1. Pure product is white odorless crystal, melting point 134 ~ 135℃, easily soluble in acetone, ether, benzene, ethanol and chloroform and other organic solvents, almost insoluble in cold water, 20℃ water solubility is 0.429/L, soluble in hot water.

2.80% naphthalene acetic acid powder is light yellow powder, melting point 106 ~ 120℃, moisture content ≤5%, stored at room temperature, the content of effective components has little change.

3. Naphthalene acetic acid can be formed into salt when it meets the base, and the salt can dissolve in water, so when preparing the liquid medicine, the original powder is often dissolved in ammonia water and then diluted.

Main use

Naphthylacetic acid is a plant growth regulator to promote plant root growth and an intermediate of naphthylacetamide. Naphthalene acetic acid is used as a plant growth regulator, and is used as a raw material for nasal and ophthalmic purification and ophthalmic brightness in medicine. Naphthylacetic acid can promote cell division and expansion, induce the formation of adventitic roots, increase fruit set, prevent fruit drop, and change the ratio of female to male flowers. Naphthalene acetic acid can enter the plant body through the tender skin of leaves, branches and seeds, and carry with the nutrient flow to the site of action. Commonly used in wheat, rice, cotton, tea, mulberry, tomatoes, apples, melons, potatoes, trees, etc., is a good plant growth stimulant hormone.

(1) For dipping sweet potato seedlings, the method is to soak the base of a bundle of potato seedlings 3cm in the liquid medicine, the concentration of soaking seedlings 10~20mg/kg, for 6 hours;

(2) Soak the root of rice seedlings at a concentration of 10mg/kg for 1 to 2 hours during rice transplanting; It is used for seed soaking on wheat, the concentration is 20mg/kg, the time is 6-12 hours;

(3) Spraying on the leaf surface of cotton during the flowering period, the concentration of 10 to 20mg/kg, and spraying 2 to 3 during the growth period should not be too high, otherwise it will cause the opposite effect, because the high concentration of naphthalene acetic acid can promote the production of ethylene in the plant;

(4) When used to promote roots, it should be mixed with indoleacetic acid or other agents with root promoting effect, because naphthalene acetic acid alone, although the root promoting effect of crops is good, but the seedling growth is not ideal. When spraying melons and fruits, it is appropriate to spray evenly wet the leaf surface, the general spray liquid amount of field crops is about 7.5kg/100m2, and fruit trees are 11.3 ~ 19kg/100m2. Treatment concentration: 10 ~ 30mg/L spray for melons and fruits, 20mg/L soak for 6 ~ 12h for wheat, 10 ~ 20mg/L spray for 10 ~ 20mg/L at flowering stage 2 ~ 3 times. This product can be mixed with general insecticides, fungicides and chemical fertilizers, and the effect is better in fine weather without rain.

Attentions

1. Naphthylacetic acid is insoluble in cold water. When preparing, it can be dissolved in a small amount of alcohol, diluted with water, or mixed into a paste with a small amount of water, and then stirred with sodium bicarbonate (baking soda) until fully dissolved.

2. Early maturing apple varieties that use thinning flowers and fruits are prone to drug damage and should not be used. It should not be used when the temperature is high around noon or during the flowering and pollination period of crops.

3. Strictly control the concentration of use to prevent excessive use of naphthylacetic acid from causing drug harm.

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