Liquid Bio Fungicides Dosage Trichoderma spp. against Fusarium Wilt Diseases, Growth and Yield of Onion -

Liquid Bio Fungicides Dosage Trichoderma spp. against Fusarium Wilt Diseases, Growth and Yield of Onion

It showed the effect of liquid bio fungicides dosage Trichoderma spp. against Fusarium wilt diseases, growth and yield of onion. Liquid bio fungicides Trichoderma spp. starting with a dose of 5.0 ml/plant caused the onion plants not infected with Fusarium wilt diseases. By not getting infected with onion, the plant height growth will be better. The starting dose of 5.0 ml/plant increases the weight of harvest onion. Treatment of biofungicide doses of 5.0 ml/plant showed harvest dry weight of 11.36 tons/ha and stored dry weight of 10.13 tons/ha, and in the control for harvest dry weight only 5.60 tons/ha and save dry weight 4.88 tons/ha.

Method

The bio fungicide used is a liquid bio fungicide. Liquid formulations are based on Sudantha (2009) method. The fungal cultures used were T. koningii fungus isolates ENDO-02 and T. harzianum SAPRO-07 isolates grown on PDA media and used for coffee leaf powder liquid fermentation.

The onion seeds used are Keta Monca varieties which are purchased from seed growers. Onion seeds that are good to use are healthy and quality seeds with a shelf life of 2 months and there appear to point growing at the roots.  Soil processing is done by using hoes to flatten the soil and make plots measuring 2 m × 4 m for each treatment plot. After processing the soil, basic fertilization is carried out using Phonska fertilizer 100 kg/ha (50% of recommendations). The provision of basic fertilizer is done by immersing it next to the planting hole. Fungal inoculation of F. oxysporum was carried out because of the fungal population of F. oxysporum <40 x 104 Colony Form Unit/g soil or disease incidence <50%. Inoculation was carried out by 25 ml of F. oxysporum fungi suspension poured around the roots or shallot tuber in the two weeks after planting (WAP). Irrigation is carried out in the morning or evening and is done through the experimental land being dilated through a channel on the experimental plot to wet soil. Weeding is done by removing weeds that grow around the plants. Follow-up fertilization is done when the plant is 5 WAP. Follow-up fertilization using urea fertilizer 165 kg/ha and KCl 50 kg/ha. Fertilization is done by placing fertilizer next to the base of the plant stem with a distance of ± 2 cm. Planting is done twice, namely when the plants are 5 WAP and 8 WAP. Embedding is done by raising the soil around the plant to the base of the plant stems. Harvesting of onion is done when the plant is 62 WAP.

Reference:

Sudantha, I.M., Suwardji, S., Aryana, I.G.P.M., Pramadya, I.M.A. and Jayadi, I., 2020, July. The Effect of Liquid Bio Fungicides Dosage Trichoderma spp. against Fusarium Wilt Diseases, Growth and Yield of Onion. In Journal of Physics: Conference Series (Vol. 1594, No. 1, p. 012013). IOP Publishing.