ประสทธภาพของการบมเซรมนำยางธรรมชาตรวมกบบาซลลส ตอการสงเสรมการเจรญเตบโตของกวางตงฮองเต

This study aimed to investigate the effects of natural rubber serum fermented with the spores of 4 probiotic Bacillus sp. namely Bacillus aryabhattai (CKNJh11), B. pseudomycoides (THPS1), B. fusiformis (PWR01), and B. marisflavi (OYNH19) both encapsulated and non-encapsulated with sodium alginate, on the growth promotion of Pak-choi (Brassica chinensis) over 35 days after planting. The experiment was designed as a completely randomized design (CRD), with each treatment consisting of three pots, and each pot containing 3 Pak-choi plants. The results showed that the treatment group using natural rubber serum fermented with probiotics spore for 7 days had the best growth performance of Pak-choi. The mean values for plant height, chubby, leaf width, leaf length, and length of leaf stalk were 16.20 2.56 7.80 10.83 and 6.00 cm, respectively. The mean number of leaves was 13 leaves per plant. The average fresh weight and dry weight per plant were 50.76 and 6.91 g, respectively. In contrast, the group supplemented with non-fermented natural rubber serum had mean values for plant height, chubby, leaf width, leaf length, and length of leaf stalk of 15.73 2.40 7.43 10.06 and 5.50 cm, respectively, with an average of 12.33 leaves per plant. Both groups showed growth rates comparable to the group treated with chemical fertilizer (25-7-7). The findings suggest that natural rubber serum fermented with non-encapsulated probiotics for 7 days, as well as non-fermented latex serum, can promote the growth of Pak-choi as effectively as chemical fertilizer. Therefore, these treatments could serve as viable alternatives to chemical fertilizers for promoting Pak-choi growth.