Research technical production of Trichoderma preparations for control of yellow leaf - root rot on citrus trees
Authors:
: Số 64(9) : 65-68
Publishing year: 9/2022
The study of conditions biomass multiplication and production of microbial organic fertilizers from Trichoderma for citrus trees, to help improve soil and prevent Fusarium sp., Phytophthora sp. causes yellow leaf - root rot. The use of cultures two very high resistance strains of T.haz.22.QH and T.asp.11.TT. Cultures of Trichoderma in liquid medium with the composition of extract from 150g bean sprouts + 30g sugar + 1g urea +1g KH2P04 + 0.5g MgS04 were the highest biomass of 4.35 ± 0.48 g/l after 1 day. Solid fermentation medium using simmered whole-grain rice substrate and 10% fungal juice were suitable for fast growth and spores 8.82 x 109 CFU/g and obtained fungal biomass after 5 - 6 days. Producing micro-organic fertilizers using 100% manure or 50% bagasse: 50% manure with 6 - 8kg of Trichoderma and obtained fecal biomass after 60 days of incubation.
Biomass, citrus, Trichoderma, yellow leaf - root rot