The effects of various fermented bio-extract on yield of Thai striped eggplant (Solanum melongena L.) variety Nang Pha Ya

Abstract

The purpose of this research was to study the effects of various fermented bio-extract on yield of Thai striped eggplant variety, Nang Pha Ya. Experimental design was completely randomized design (CRD) with 5 treatments and 10 replications. The treatments were: 1) control (no fermented bio-extract), 2) fermented ted bio-extract from pig placenta, 3) fermented bio-extract from milk, 4) fermented bio-extract from papaya, and 5) commercial formula bio-extract. The results demonstrated that the use of various fermented bio-extracts did not statistically show significant differences in the yields of Thai striped eggplant on control treatment, but on commercial formula bio-extract treatment which resulted in high yield and yield quality. However, it was found that the application of fermented bio-extract from milk resulted in high fruit weight and total weight per plant, similar to the commercial formula bio-extract, and can also reduce the amount of rotten yield. In terms of income and cost analysis of Nang Pha ya eggplant production in 1 rai, the process with the lowest cost and the best return above variable cost was on the use of fermented bio-extract from milk. The milk bio-extract can therefore be an alternative to bio-fertilizers from commercial formulas and could reduce the cost of chemical fertilizers being used regularly by the farmers which can then lead to consumers receiving more nutritional value without chemical additives from Thai eggplants.