Maize Yield and Nutrient Losses as Affected by Different Fertilizer Rates

IPNI-2013-CHN-SC20

This project was initiated in 2012 to fine-tune N and K fertilizer application rates for maize grown on sloping farmlands in Sichuan province. The N rates used in 2014 were adjusted downward, K rates remained constant, and P was fixed to a single rate based on results from previous years. The seven treatments included five rates of N (0, 150, 225, 300, or 375 kg N/ha), three rates of K (0, 75 or 120 kg K2O/ha) and one P rate (150 kg P2O5/ha). Read more


Year of initiation:2013
Year of completion:2013
Map:

Interpretive Summary

2014

This project was initiated in 2012 to fine-tune N and K fertilizer application rates for maize grown on sloping farmlands in Sichuan province. The N rates used in 2014 were adjusted downward, K rates remained constant, and P was fixed to a single rate based on results from previous years. The seven treatments included five rates of N (0, 150, 225, 300, or 375 kg N/ha), three rates of K (0, 75 or 120 kg K2O/ha) and one P rate (150 kg P2O5/ha).

2013

This project continued to evaluate the effects of different application rates of N, P and K fertilizers on maize yield and nutrient losses from Sichuan's sloping farmlands during the summer rainy season. The fertilizer application rates were the same as in 2012, i. e. , five rates of N (0, 225, 300, 375, and 450 kg N/ha), three rates of P (0, 150 and 300 kg P2O5/ha) and three rates of K (0, 75 and 150 kg K2O/ha).



Project Leader

None


Project Cooperators

None


IPNI Staff

Shihua Tu


Location

Asia \ Eastern Asia \ CHN \ Sichuan


Topics

4r rate, balanced nutrition

maize

Nitrogen (N), Potassium (K)