Compositions of increasing microbial populations on surfaces and their uses
A composition, microbial technology, applied in the direction of stimulating growth, application, biochemical equipment and methods by adding compounds, which can solve the problem of increasing the population density or biological activity of microorganisms on the surface of plants, increasing the population density or biological activity of natural microorganisms or beneficial microorganisms. Activity and other issues to achieve the effect of increasing microbial population, prolonging supply time, and improving biological activity
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[0074] 4. Preparation of Microbial Compositions
[0075]The microbial composition of the present invention is prepared by grinding and mixing various ingredients into a powder having an average particle size equal to or less than 0.1 mm. In the composition according to the invention, the SAP is a starch based SAP. The microbial nutrient is PLNT. Beneficial microorganisms are purchased commercially or isolated, purified and cultured in a laboratory, cultured, and then made into powder by freeze-drying technology. In addition, 5% of surfactant in powder form was used to achieve uniform distribution of the composition on the plant surface. In the present invention, the surfactant is Softanol (CAS Registration No. 68131-40-8) manufactured by Ineos Oxide Ltd., UK. Softanol was absorbed at a weight ratio of 1:1 with white carbon ink supplied by Jungwoo Chemical Co., Korea. In more detail, Softanol is a nonionic surfactant obtained by adding ethylene oxide to a linear secondary a...
Embodiment 1
[0084] Example 1: Dynamics of microbial populations
[0085] In this example, the effect of each composition on the population density of natural microorganisms or added beneficial microorganisms present on the plant surface was monitored. For the purposes of the experiment, natural microorganisms were defined as microorganisms obtained as follows: 100 grams of cucumber leaves from adult cucumber plants were vigorously shaken with 1 liter of water in a 250-ml Erlenmeyer flask, allowed to stand for 30 minutes, and then vigorously After shaking, filter with a sterilized double-layer coarse filter cloth (hereinafter collectively referred to as "leaf elution water"). When cultured on LB agar medium, approximately 2×10 5 Colony forming units / milliliter (cfu / ml) (equivalent to 5.3 log colony forming units / ml) of native microorganisms. Among them, bacteria accounted for 90% of the dominant number in the total population. Each composition in the present invention was added to leaf ...
Embodiment 2
[0094] Example 2: Activity of Compositions for Protecting Plant Seedlings from Phytopathogens
[0095] In this example, the compositions of the present invention were tested against phytopathogens (Magnaporthe grisea, Thanatephorus cucumeris, Phytophthora capsici, Botrytis cinerea) in a growing room. ), Puccinia graminis (Puccinia graminis), powdery mildew (Blumeria graminis (Erysiphe graminis) protective activity (Choi, G.j, Kim, J.-C., Lee, S.-W., Jang, K.S., Kim, J .-S., and Cho, K.Y. 2002. Antifungal activity of several plant extracts against wheat rust. Korean Journal of Insecticidal Science 6(2):87-95. Korean). The main difference is: Thing 200 times of dilution sprays after plant surface treatment plant 3 days, inoculates and inoculates phytopathogens respectively.Plant after the treatment maintains by routine operation, estimates plant protection activity by control value.Control value (Control value, CV) is estimated with following calculation formula : CV (%)={1-(tr...
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