K20

Subtilis K20 belongs to the Bacillus biocontrol bacteria, its unique product: ethylparaben, with broad-spectrum antibacterial and antibacterial effect, naturally exists in nature, because it does not contain endotoxins, can form spores, strong environmental adaptability, has strong competitiveness with indigenous microorganisms, etc., in environmental protection, plant biocontrol, chemical industry, food and other aspects have been well applied.

Category:

Biological Pesticide

Attachment:

Details
Usage and dosage
Use Cases
Product Video

▌Product introduction

subtilis K20 belongs to the Bacillus biocontrol bacteria, its unique product: ethylparaben, with broad-spectrum antibacterial and antibacterial effects, naturally occurring in nature, because it does not contain endotoxins, can form spores, strong environmental adaptability, has strong competitiveness with indigenous microorganisms, etc., in environmental protection, plant biocontrol, chemical industry, Food and other aspects have been well applied.

[features].

● This product is a high-density fermentation probiotic, a variety of high-efficiency strains composite, rich in amino acids, protein, organic matter, polysaccharides and other nutrients.

● after using this product, it can greatly supplement beneficial bacteria, improve the soil root microecological environment, strong rooting, thick stems.

● solve the obstacles of crop heavy cropping, resist various diseases such as green and dry, root rot, yellow wilt, stem base rot, rot, rot, etc., and improve crop stress resistance.

● decomposes and releases minerals and nutrients from the soil, continuously providing fertilizer nutrients for crops.

● This product is green and pollution-free, helps to degrade pesticide residues and heavy metal pollution, and is the preferred product for green organic food.

[Applicable objects] This product can be widely used in nightshade, leafy vegetables, roots, melons and fruits, fruit trees, Chinese herbal medicine, tea, as well as tobacco, potatoes, corn, rice and other field crops.
▌Usage and dosage

● diluted 200-500 times liquid with water, stirred well, watered, drip irrigated, microsprayed near the roots of crops, seedlings transplanted; During the growing period, mix 500-800 times with water, spray the leaves and stems of the plant.

● recommended dosage per mu is 2-5kg, heavy stubble seriously increase the dosage.

● This product can be used throughout the growth and development period of crops, and it is recommended to use it in the key period for crop seeding, seedlings, transplanting slow seedlings, flowering to early fruiting and other growth periods.

▌Use cases

Effects of different concentrations of subtilis K20 strain on the growth of tomato and pepper seedlings
Experiment preparation	After planting tomato seedlings and pepper seedlings for 7 d, the hay will be withered K20(1×108 cfu ·mL-1 )Dilute 10, 100, 500, 1000, 10000-fold, respectively. Sterile water was used as a control. 2 plants per 7 pots treated, 3 replicates. The root filling volume was 50 mL. The plant height, stem thickness, leaf size and leaf number of seedlings were determined at 0 d and 14 d after treatment.
Experimental data
Experimental results	The effects of different concentrations on the growth of tomato seedlings were significantly higher than those of the control and other treatments, with a net increase of 20.29 cm and 19.71 cm, respectively, compared with 100 times and 500 times dilution of subtilis K20. The stem thickness and leaf count of the 500-fold dilution treatment were significantly higher than those of the control and other treatments. Dilutions of 10, 100, 500, 1 000 times can significantly promote the growth of leaf length. Overall, 500 times dilution of subtilis K20 fermentation broth has the best effect on tomato seedlings. Effects of different concentrations of treatment on the growth of pepper seedlings, different concentrations of subtilis K20 fermentation broth had obvious promoting effects on the growth of pepper seedlings, among which the dilution of 10 times had the most obvious effect, the net increase of plant height was 21.25 cm, the net growth of stem thickness was 0.37 mm, and the number of leaves, leaf length and leaf width were significantly higher than those of the control.

Effects of different root irrigation times of K20 subtilis strain on the growth of tomato and pepper seedlings

Experiment preparation

After indoor planting of tomato seedlings and pepper seedlings for 7 days, the seedlings were irrigated with a 100-fold dilution of subtilis K20. A total of 4 treatments were set, T1: 1 time of root irrigation during colonization; T2: 1 time of root irrigation during colonization, 1 time after 7 days, a total of 2 times; T3: 1 time for root irrigation during colonization, 1 time after 7 d and 15 d, a total of 3 times; T4: 1 time of root irrigation during colonization, 1 time after 7, 15, 30 days, a total of 4 times. Sterile water was used as a control. 2 plants per 10 pots handled, 3 replicates. The root filling volume was 50 mL. The plant height, stem thickness, leaf size and leaf number of seedlings were determined 0 and 42 days after treatment, and the net growth was calculated.

Experimental data

The effect of different irrigation times on the growth of tomato seedlings, the net growth of plant height, stem thickness, leaf number and leaf width of tomato seedlings treated with 2 times (T2) and 3 times (T3) treated with subtilis K20 were significantly higher than those of control and other treatments. Among them, the net increase of plant height was the largest, reaching 54.40 cm, and the net increase of leaf width and length was also the largest, reaching 4.50 mm and 6.60 mm, respectively. The net increase in stem thickness and leaf number was the largest in 2 treatments, reaching 1.28 mm and 13.80 pieces, respectively. On the whole, 2~3 times of root irrigation has the best effect on the growth of tomato seedlings.

The effect of different root irrigation times on the growth of pepper seedlings, and the different irrigation times of dry grass K20 had no significant effect on pepper plant height. The net stem growth of pepper seedlings treated with 2 (T2) and 3 (T3) irrigation was significantly higher than that of the control and other treatments, reaching 0.50 mm and 0.52 mm, respectively. The number of leaves, leaf length and width of the two treatments were the largest, and the net growth reached 47.67, 66.84 mm and 25.73 mm, respectively. In summary, 2 times of root irrigation had the best effect on promoting the growth of pepper seedlings.

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