Pemberian Beberapa Konsentrasi Ekstrak Biji Mahkota Dewa (Phaleria Macrocarpa…

ABSTRACT Helicoverpa armigera Hubner is a pest on the corn plant. H. armigera pest control is usually performed using synthetic insecticides, however the unwise of them use can cause negative impacts to humans and the agricultural environment, then necessitating alternative insecticides that are safer and environmentally friendly such as the use of the seed extract of the crown of god (Pha…