The Influence Of Treatment Variation Of Plant Promoting Bacteria In Cultivation On The Quality Of Chinese Cabbage (Brassica rapa L. Ssp.pekinensis)

The use of plant promoting bacteria inexperimental land in Mayungan village, Tabanan, Bali is aneffort to reduce the use of chemicals during Chinese cabbage(Brassica rapa L. Ssp.pekinensis) cultivation.This researchwas conducted to determine variations in the treatment ofplant-promoting bacteria on the quality of Chinese cabbageproduced. Chinese cabbage results from variations in thetreatment of Plant Growth Promoting Rhizobacteria (PGPR)compared with Chinese cabbage obtained from conventionalfarmers. This research uses factorial randomized block designwith 2 factors. The first factor is the duration of the seedssoaking with PGPR solution namely 0, 10, 20, and 30 minutes,while the second factor is the use of PGPR concentrationswhen watering the plants in the beds (plant age 2 weeks),namely: 0; 1.25; 2.5 and 3.75 cm3/L. Data from laboratoryanalysis results were analyzed using analysis of variance, thenthe data analyzed by using the Tukey test at the 5% level, thedata processing using the Minitab17 program. Determinationof the best treatment is determined based on the effectivenessindex (EI) method. In the treatment variation of the use ofPGPR slightly increases the levels of organic matter andNitrogen, Phosphorus, Potassium of the soil, while the yieldand plant height are slightly below Chinese cabbage whichderived from conventional farmers. Based on the researchresults variations in the use of PGPR has the influence on thechlorophyll content, total dissolved solids, texture, brightnesslevels, but does not has an influence on the vitamin C inChinese cabbage. The research results obtained Chinesecabbage with seed soaking for 20 minutes and the use ofPGPR when watering plants in the beds equal to 2.5 cm3/L isthe best result, these results are almost the same as Chinesecabbage from conventional farmers