1. Origin:

Nhi Uu 838 is a Chinese three - lines hybrid rice variety which is imported into Vietnam since 1995.

2. Characteristics:

Growing time: in the North of Viet Nam: in Spring crop from 125 days to 130 days, in Summer crop from 105 days to 110 days; in South Central and Central Highlands: in Winter-Spring crop from 110 days to 115 days, in Summer-Autumn crop from 100 days to 105 days.

High intensive farming, wide adaptability.

Height: from 115 cm to 120 cm, strong stem, anti - shedding, good - tillering, pretty phenotype, vertical bud; gourd shape seeds, 1000 seeds's net weight is about 28 grams to 29 grams.

Good resistance to cold, anti - rice blast bacteria, moderately to seriously infected by leaf blight bacteria.

Average yield reaches from 70 quintals to 75 quintals/ha, can reach from 80 quintals to 85 quintals/ha with good intensive farming conditions.

Medium rice's quality.