Development of Bio-Products to Enhance Growth-Promoting and Disease Control of Economic Plants

The use of biological methods to control plant disease is an option to reduce the pesticide residues in an environment. The objective of this research is to develop the bio-products for the elimination and/or replacement of pesticides. All the 182 strains of beneficial bacteria were screened from 20 samples of chili. The samples were divided into 8 groups. The strain SP-TU6, SP-TU7, and SP-TU3 were high efficacy inhibited mycelium growth of Colletotrichum capsici P-TU008 with 98.93, 94.62, and 95.69%, respectively as chemical control (carbendazim). The development of 3 bio-products that can promote the growth of economic crops are including Bioproduct 1 = talcum: CaCO3: CMC (9.75:1.5:1), Bioproduct 2 = corn flour: talcum: CaCO3: CMC (10:87.5:1.5:1), and Bioproduct 3 = corn flour: talcum: CaCO3: CMC (20:87.5:1.5:1). All bioproducts showed the best level of solubility in water, distribution, and sedimentation. Found that, the bioproduct 1 was suitable for survival of beneficial bacteria SP-TU3 and SP-TU6 with a population of 4.5x1012 and 3.2x1013 cfu/g respectively, and bioproduct 2 was suitable for strain SP-TU7 (2.4x1012 cfu/g) after storage for 3 months. The strain SP-TU3 in bioproduct 1 can induce seed germination and growth parameter of chili (Capsicum spp.) were 95% and 1.86, respectively, and SP-TU7 in in bioproducts 2 had the highest efficiency to induce seed germination and growth parameter of ruzi grass (Brachiaria ruziziensis) with 62% and 6.51 respectively, and strain SP-TU6 was the most effective germination and growth parameter of B. chinesis and B. oleracea with 98%, 88%, and 3.62, 88.00, respectively.