Agronomic evaluation of control-release urea (CRU) in some crops in Inner Mongolia

IPNI-2014-CHN-NM4

The purpose of this study was to demonstrate the appropriate ratio of controlled-release urea (CRU) and regular urea (RU) for processing tomato and sunflower production. Nitrogen fertilizer application increased processing tomato yield by 50 to 95 t/ha (71% to 137%) over the zero N control treatment. At the recommended N rate, application of 60% as basal CRU plus 40% as RU split, between flowering and fruiting, produced the highest fruit yield. Read more


Year of initiation:2014
Year of completion:2015

Interpretive Summary

2015

The purpose of this study was to demonstrate the appropriate ratio of controlled-release urea (CRU) and regular urea (RU) for processing tomato and sunflower production. Nitrogen fertilizer application increased processing tomato yield by 50 to 95 t/ha (71% to 137%) over the zero N control treatment. At the recommended N rate, application of 60% as basal CRU plus 40% as RU split, between flowering and fruiting, produced the highest fruit yield.

2014

The purpose of this project was to study the effect of combinations of control release urea (CRU) and regular urea (RU) on yield and N use efficiency, compared with RU application alone at the same N rate in rainfed plastic-mulched maize in Chifeng City.



Project Leader

None


Project Cooperators

None


IPNI Staff

S. Li


Location

Asia \ Eastern Asia \ CHN \ Inner Mongolia


Topics

nutrient use efficiency

maize

Nitrogen (N)