Growth Response and Yield of Shallots to Trichoderma Biostimulants and Growth Regulators Substance Benzyl Amino Purine (GRS BAP)

Abstract

Shallots are one of the vegetable commodities that have important meaning for the community, both in terms of their high economic value and nutritional content. The productivity of shallots in West Nusa Tenggara is still low compared to the production potential of shallots. One of the causes of the low productivity of shallots is that the conventional shallot cultivation technique relies too much on chemicals and is planted in the dry season on dry land. One of the efforts to increase the productivity of shallots is by administering the biostimulant Trichoderma and the Growth Regulatory Substance Benzyl Amino Purine (GRS BAP). This study aims to determine the growth response and yield of shallots to the biostimulant Trichoderma and GRS BAP. The study used an experimental method which was carried out on land owned by farmers in Sembalun Bumbung Village, Sembalun District, East Lombok Regency. The study used a Randomized Block Design with a factorial experiment consisting of 2 factors. The first factor was Trichoderma biostimulant which consisted of four levels, namely: without biostimulant, Trichoderma harzianum Sapro-07 fungus biostimulant, T. koningii Endo-02 fungus biostimulant, and mixed fungi biostimulant T. harzianum Sapro-07 and T. koningii Endo-02. The second factor is: GRS BAP which consists of two levels, namely without GRS BAP and with GRS BAP. The results showed that shallot plants treated with a mixture of biostimulant fungi T. harzianum Sapro-07 and T. koningii Endo-02 either with or without GRS BAP could increase plant height, number of leaves, root length, and increase the number of tillers and shallot weight dry harvest. In other words, the mixed biostimulant of T. harzianum Sapro-07 and T. koningii Endo-02 fungi had the same role as GRS BAP in stimulating the growth and yield of shallots.

Enrichment of organic material with Trichoderma asperellum for the management of twisted disease on shallot

“…The increase in the height of shallot plants by T. asperellum and its application as a Plant Growth-Promoting Rhizobacteria (PGPR) is primarily attributed to several mechanisms that this fungus employs to promote plant growth and health. Trichoderma can stimulate the vegetative growth of shallots (Sudantha & Suwardji, 2021).…”