Eficiência do extrato de Zingiber officinale Roscoe na sanidade e germinação de sementes de Erythrina velutina Wild.

Abstract

The sanitary quality of forest seeds is one of the main factors for their germination due to the losses caused by their deterioration, abnormalities, lesions in seedlings and consequently the drastic reduction of seedling production in nurseries. Alternative treatments based on plant extracts may eventually constitute an alternative for the control of pathogens associated with seeds, with the reduction of expenses for the production and production of nutrients for the chemical products. This work has as main objective the efficiency of the different treatments with ginger extract (germination) and the reduction of the incidence of fungi associated with mulungu (Erythrina velutina) seeds. The mulungu seed health test was performed to quantify and identify fungi associated with mulungu seeds using the Blotter Test method, NEEGAARD, 1979. For the use of 500 mulungu seeds collected in the year 2018 and for the germination test in the year 1000 mulungu seeds collected in 2016, submitted to a set of substrates - sand and vermiculite - for germination test and the different concentrations of ginger extract, for both testicles: 0% ginger extract (T1); 25% -exclusion of ginger (T2); 50% -extraction of ginger (T3); 75% -exclusion of ginger (T4) and 100% - extraction of ginger (T5) for one minute. After the analysis of the mulungu seeds, it was observed a greater incidence for the genus Aspergillus. In the germination, a vermiculite was superior to a sand, the difference in performance and the movements were T2 - 25% of mulungu extract, T4 - 75% of mulungu extract and T5 - 100% of extract of mulungu, thus obtaining 100% germination in these treatments.