Abstract: A process for the efficient production of seed capable of growing F.sub.1 hybrid L. plants comprising the steps of:(a) growing a first population of normal soybean plants characterized by relatively large seeds in pollinating proximity to a second population of soybean plants characterized by delayed pollen release and relatively smaller seeds, each of said populations being of the closed floret types;(b) exposing the two plant populations to a population of leaf-cutter bees (Megachile rotundata L.);(c) harvesting the seed crop which is formed on said plants of said second population; and(d) recovering from said harvested seed crop the relatively larger seed resulting from cross-pollination.