ZEOLITE AS SLOW RELEASE FERTILIZER ON SPINACH YIELDS AND QUALITY IN A GREENHOUSE TEST |
| |
| Authors: | Zhaohui Li Yingpeng Zhang Yan Li |
| |
| Affiliation: | 1. Faculty of Earth Sciences , China University of Geosciences , Wuhan , China;2. Geosciences Department , University of Wisconsin—Parkside , Kenosha , Wisconsin , USA;3. Institute of Soil and Fertilizer , Shandong Academy of Agricultural Sciences , Jinan , China;4. Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Control , Jinan , China |
| |
| Abstract: | There has been a great need to reduce the non-point source pollution due to pesticide and fertilizer applications. With a high surface area and large cation exchange capacity, zeolite was proposed to use as carriers to control ammonium and potassium release. A greenhouse test was conducted to evaluate spinach growth and spinach quality after application of zeolite pre-load with ammonium (NH4 +) and potassium (Eco-zeolite). An increase in spinach yield with comparable vitamin C content was achieved using the Eco-zeolite. However, elevated oxalate content was unexpected, possible due to the presence of NH4 + as the exchangeable cations after modification. |
| |
| Keywords: | fertilizer oxalate spinach yield zeolite |
|
|
