Uji Beberapa Konsentrasi Ekstrak Biji Bintaro (Cerbera Manghas L.) Dalam Meng…

Red onion (Allium ascalonicum Linn.) are one of the most popular horticultural commodity plants, so they are widely consumed as cooking spices and as ingredients for traditional medicines. The main problem in onion cultivation is the attack of Plant Pest Organisms. The most important pest is the pest Spodoptera exigua Hubner. S. exigua attacks can cause yield loss of up to 100% if not controlle…