Effects of iprodione and vinclozolin seed treatments on germination, emergence and plant growth in onion

Abstract

Iprodione or vinclozolin dusted on White Spanish and Goldberg onions, at 100g a.i./kg of seed, reduced germination by at least 40% and severely stunted the growth of seedlings nated on moistened filter paper. Similar rates of vinclozolin severely reduced field emergence and retarded the growth of White Spanish and Goldberg seedlings whereas the same rate of iprodione reduced field emergence and growth of Goldberg, but not White Spanish. Poor field emergence of treated seed could have been a germi consequence of inhibition of germination, stunted seedling growth or a combination of both factors.