Qualidade de sementes de arroz híbrido tratadas com fungicida e ácido giberélico

Abstract

The rice economy growth has been provided by the technological gain, incluing the hybrid rice development, the use of chemycal products to patogens control and the use of vegetal growth regulators. This works objective is to evaluate of the physiologic quality of the Avaxi hybrid rice seeds, previous treated with fungicide and giberelic acid along the storage. The seeds were treated with fungicide and giberelic acid (AG3), respectively in the concentrations: zero; 125; 250 e 500ml e zero; 0,5; 1,0 e 1,5g/100kg of seeds. After were treated, the seeds were the store for 180 days, it was made determinations of moisture content, germination, first germination count, cold test, accelerated ageing, field emergency, electric conductivity and sanity. The results let conclude that the concentration of 125ml/100kg of seeds to incite smaller damages of physiologic quality, during the storage and bigger dosages than this were harmful; the AG3 use in the seeds treatment results germination percents and tested hybrid vigour increase; the seeds treatment with fungicide decreases the fungus incidence during the storage.