Effect of balanced fertilization on production of pineapple in Hainan

IPNI-2008-CHN-HI24

The study was aimed to further fine-tune the optimal fertilizer rates determined in the previous two years of field experiments on chili pepper, one of the most widely grown vegetables in winter in Hainan, China. In 2011, the optimal rates of N and P were determined to be 300 and 60 kg/ha for high yield chili production. This year, six K rates (0, 60, 120, 180, 240, and 300 kg K2O/ha) were evaluated. Read more


Year of initiation:2008
Year of completion:2011

Interpretive Summary

The study was aimed to further fine-tune the optimal fertilizer rates determined in the previous two years of field experiments on chili pepper, one of the most widely grown vegetables in winter in Hainan, China. In 2011, the optimal rates of N and P were determined to be 300 and 60 kg/ha for high yield chili production. This year, six K rates (0, 60, 120, 180, 240, and 300 kg K2O/ha) were evaluated.

The study continued to verify the optimal fertilizer rates tested in 2010 for chili pepper, one of the most widely grown vegetables during winter on this tropical island, and the results will be used to guide fertilizer application for local technicians and vegetable growers. The experiment consists of six rates of N (0, 300, 375, 450, 525, 600 kg N/ha), P (0, 60, 120, 180, 240, 300 kg P2O5/ha) and K (0, 225, 300, 375, 450, 525 kg K2O/ha).

Hainan Island of China, due to its unique tropical and subtropical climate, is well suited to produce a number of agricultural products that cannot grow elsewhere or during the winter season in the country. The high value associated with this vegetable production usually leads to over-use of fertilizers by farmers.

This study continues to investigate the effect of fertilizer on yield and quality of pineapple on Hainan Island to develop fertilizer best management practices. The experiment consists of six treatments, including an optimal treatment (OPT) with 540-210-810 kg N-P2O5-K2O/ha and a series of nutrient omission plots. This design was based on soil testing and results from a previous field study.

On Hainan Island, pineapple is usually grown on the sand-gravel soils. These soils are very acidic and poor in soil fertility due to very low cation exchange capacity and high leachability. Even so, this soil-type is still considered best suited to pineapple. According to past research and common experience, the crop does not grow well on heavy-textured, more fertile soils.

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Project Leader

Liangshang Xie, Hainan Academy of Agricultural Sciences


Project Cooperators

Zhang, Wen


IPNI Staff

Shihua Tu


Location

Asia \ Eastern Asia \ CHN \ Hainan \ Qionghai


Topics

4r rate, nutrient management

fruit

Nitrogen (N), Potassium (K)