Bases of the obligate biotrophy of arbuscular mycorrhizal fungi

Abstract

The presence of weed on the cultivation can decreasing the production of corn with a few management weeds to reduce weed and expected to improve growth and production of corn on cultivating lands. The research carried out in District Simalungun province Sumatera Utara on the moon July until September 2013, used non factorial randomized block design, with 10 treatement and 3 replications. Parameter observased is high plants, dry weight 100 seeds, production tongkol per plot, production pipil per plot. The research results the way of managing a weed non significant at tongkol per plot and dry weight 100 seeds but significant against high plant, and production of pipil per plot.