Balanced fertilization requirements for longan fruit

IPNI-1993-CHN-GD8

18 May 2001

1995 Annual Interpretive Summary


Balanced fertilization requirements for longan fruit, 1995

Fertilizer at rates of 1.8-0.9-2.5-1.68-0.045-0.22 kg/tree N-P2O5-K2O-Ca-Mg-Zn in longan fruit trees was found to be balanced and adequate for high yields in a low-stress year. The nutrients N, P, K, Ca, Mg and Zn were found to be necessary for good production. Among the three test sites, no response to B was observed. In larger demonstration trials, balanced fertilization with 2 kg K2O/tree increased yields by 114 percent, 27 percent and 43 percent, respectively, for the three locations compared to local farmer practices. The higher yields increased profits to an average of 267 Chinese yuan (US$32) per tree. GUANGDONG-08