Nutrient Management and Balanced Fertilization on Major Crops in Jilin Province
The project has been focusing on Nutrient Expert based fertilizer recommendation since 2011
IPNI-2006-CHN-JL7
26 Feb 2010
2009 Annual Interpretive Summary
A Macronutrient Rate Study for Maize Production in Jilin, 2009
A total of 18 field experiments were designed for 2009 to determine the proper rates for N, P, and K fertilizers for high yield maize production in selected locations within the “spring maize belt” in Jilin Province.
Results indicated that N rates for maximum economic yield ranged between 63 to 188 kg N/ha, appropriate P rates ranged between 51 to 62 kg P2O5/ha, and K rates ranged between 23 to 72 kg K2O/ha. Yields ranged between 6.2 to 12.4 t/ha. Application of N, P, and K fertilizer increased yields by 3 to 60%, 3 to 19%, and 2 to 8%, respectively. Agronomic efficiency for N ranged between 22.5 to 3.8 kg grain increase/kg N. The net benefit from fertilizer application ranged from US$7 to US$726/ha for N, US$46 to US$240/ha for P, and US$14 to US$114/ha for K.
The wide range of proper rates of N, P, and K for maximum yield maize production is indicative of great variation in soil fertility and supports the importance of soil testing to guide fertilizer recommendation programs. It is also important to develop suitable site-specific nutrient management programs to maximize yields and profits within this maize belt of China. Jilin-NMBF