PRODUTOS A BASE DE PLANTAS E SUA INFLUÊNCIA NA GERMINAÇÃO E VIGOR DE SEMENTES DE FEIJÃO-CAUPI

Abstract

Cowpea (Vigna unguiculata) is one of the most important sources of protein, employment, and family income,
especially in the north and northeast regions of Brazil. Physiological quality is the ability of seeds to perform
their vital functions, such as longevity, germination and vigor. The use of natural products extracted from
native flora has been shown to be effective in controlling insect pests and phytopathogens. The aim of this
work is to evaluate the effect of castor oil and the mixture of natural products on the physiological quality of
cowpea seeds. The experiment was developed using a completely randomized design. The treatments
consisted of castor oil, a mixture of products developed from a mixture of angico extract (Anadenanthera
peregrina) and eucalyptus (Corymbia citriodora), castor oil (Ricinus communis) and black pepper (Piper
nigrum), and the control. After the treatment, the seeds were analyzed for germination, vigor and the presence of pathogens, on germitest paper, washed sand and black earth. There was a negative effect of the treatments in relation to the control in the tests of germination, emergence speed, emergence speed index and emergence speed coefficient in all the substrates tested, but in relation to the presence of pathogens, the mixture obtained better results in relation to the control and the castor oil, showing no pathogen. The results showed a phytotoxic effect of the products used in the germination and seed vigor, but the mix proved to be a promising alternative in the pathogen control.