Influence of organic and bio-extracts on the growth and yield of Okra, Chinese radish, and Kale

Abstract

The objective of this study was to determine the influence of organic fertilzers and fermented bio-extracts to growth and yield of 3 crops rotation (Okra, Chinese radish, and Kale under). The experimental plan was randomized complete block design (RCBD) with 12 treatments and 3 replications. The treatments were (1) control; NF, (2) earthworm-vermicompost tea; BV, (3) fish-vermicompost; BF, (4) guano; GN, (5) guano + earthworm-vermicompost tea; GN+BV,  (6) guano + fish-vermicompost; GN+BF, (7) compost; CP, (8) compost + earthworm-vermicompost tea; CP+BV, (9) compost + fish-vermicompost; CP+BF, (10) chicken manure; CK, (11) chicken manure + earthworm-vermicompost tea; CK+BV, and (12) chicken manure + fish-vermicompost; CK+BF. The results showed that the application of organic fertilizers and fermented bio-extracts significantly influenced the growth (P<0.05) and yield (P<0.05) of Okra, Chinese radish, and Kale.  The combination of chicken dung and earthworm-vermicompost tea showed the highest yield of Okra (2,202.6 kg/rai). Whereas, the combination of guano and earthworm-vermicompost tea showed the highest head length and root yield of Chinese radish (17.8 cm. and 1,386.7 kg/rai, respectively), and the combination of earthworm-vermicompost tea showed the highest yield of Kale (799.9 kg/rai). The study indicates that the application of organic fertilizers and fermented bio- extracts combination was more efficient than the only application of organic fertilizers for the growth and yield of Okra, Chinese radish, and Kale.