Author:
Backer Rachel,Solomon Damian
Abstract
AbstractBackgroundMine tailings contain rare earth elements, including lanthanum and cerium, and plant micronutrients including iron. Previous studies have demonstrated that fertilizers containing rare earth elements and/or micronutrients can influence plant physiology, nutrient uptake and crop yield. However, applying the right dose of these fertilizers is critical since the concentration range associated with benefits is often narrow, and overapplication can lead to crop yield reductions. This study aimed to quantify the effects of a water-soluble fertilizer, REAP, on the yield of greenhouse crops.MethodsIn the first experiment, the effects of three concentrations of REAP (100, 250 or 500 ppm) were compared to a control (0 ppm REAP) on growth of lettuce, tomato and pepper growing in soilless media. In the second experiments, the effects of REAP applied at higher rates (500, 1000 and 2000 ppm) were compared to a control (0 ppm REAP) on the growth of lettuce, peppers, tomato and cantaloupe.ResultsIn the first experiment, there were no significant differences in yield between treatments, REAP appeared to promote root development. In the second experiment, there were significant yield increases for all crops treated with REAP. Gas exchange rates and nutrient concentration of tomato plants receiving REAP were not significantly different from the control. These results demonstrated that nutrient elements in REAP, including lanthanum, cerium, and micronutrients, improved the growth and yield of vegetable crops when applied at rates ranging from 500 to 2000 ppm.
Publisher
Cold Spring Harbor Laboratory
Reference29 articles.
1. Babula P , Adam V , Opatrilova R , et al. (2009) Uncommon heavy metals, metalloids and their plant toxicity: a review. Organic Farming, Pest Control and Remediation of Soil Pollutants. Springer, pp.275–317.
2. Root traits and nitrogen fertilizer recovery efficiency of corn grown in biochar-amended soil under greenhouse conditions
3. Effects of lanthanum on the permeability of root plasmalemma and the absorption and accumulation of nutrients in rice and wheat;Plant physiology communications,1991
4. Arbuscular mycorrhizal fungi mediated uptake of nutrient elements by Chinese milk vetch (Astragalus sinicus L.) grown in lanthanum spiked soil;Biology and Fertility of Soils,2009
5. Effect of some light rare earth elements on seed germination, seedling growth and antioxidant metabolism in Triticum durum;Chemosphere,2009
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献