Prophylactic effect of paw-paw leaf and bitter leaf extracts on the incidence of foliar myco-pathogens of groundnut (Arachis hypogaea L.) in Ishiagu, Nigeria
Keywords: Prophylactic effect, Plant extracts, Disease incidence, Myco-pathogens.
AbstractThe aqueous extracts of the leaves of paw-paw (Carica papaya) and bitter leaf (Vernonia amygdalina) were used to investigate their prophylactic effects on the incidence of myco-pathogens of groundnut in
Ishiagu, south eastern Nigeria. Two field experiments were conducted: pre-soaking of the seeds before sowing and post-germination spraying. Both experiments had significant effects (P < 0.05) on the disease incidence of the pathogens. In the pre-soaking experiment, the incidence was drastically reduced to 2.17% (for PL15–BL20 treatment combination) being the lowest disease incidence. Postgermination spraying proved efficacious on the disease incidence by reducing the disease incidence to
as low as 2.20% for PL25–BL25 treatment combination. It is therefore recommended that both methods be used at the sowing and germinated stages respectively for better effective results.
Copyright for articles published in this journal is retained by the journal.