Azomite is a hydrated sodium calcium alumina silicate that is mined from a volcanic deposit in Utah. The product contains many micronutrients that may be beneficial in preparing catfish nursery ponds for stocking. In northwest Mississippi, a 5‐week study was conducted to compare water quality, phytoplankton populations, and zooplankton populations in Channel Catfish Ictalurus punctatus nursery ponds treated with Azomite at 0, 50, or 100 kg/ha. The study was conducted in 0.04‐ha ponds during April, when fry ponds are prepared for stocking. Azomite application did not affect ammonia concentrations. Over time, nitrite concentrations increased more in control ponds compared to Azomite‐treated ponds; however, nitrite concentrations were low in all ponds. Chlorophyll‐a concentrations were also unaffected by Azomite application. The pH did significantly increase with increasing Azomite application rate. Azomite application had no effects on phytoplankton or zooplankton populations. Overall, there were no beneficial effects of adding Azomite to Channel Catfish nursery ponds in northwest Mississippi.

中文翻译：

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在准备密西西比河道Cat鱼苗圃池塘放养时，使用全铁矿石不会对水质，浮游植物种群或浮游动物种群产生积极影响

Azomite是从犹他州的一个火山沉积物中开采出来的水合硅酸铝钠钙。该产品包含许多微量营养素，可能对准备cat鱼育苗池供养有益。在西北密西西比州，5周的研究以水质，浮游植物种群，和浮游动物种群比较斑点叉尾鮰斑点叉尾鮰与Azomite在0，50或100公斤/公顷处理的育苗池。这项研究是在四月份的0.04公顷池塘中进行的，当时准备将鱼苗池放养。施用重晶石不会影响氨浓度。随着时间的流逝，与采用Azomite处理的池塘相比，对照池塘中的亚硝酸盐浓度增加更多。但是，所有池塘的亚硝酸盐浓度都较低。叶绿素a浓度也不受Azomite施用的影响。pH值随着Azomite施用率的增加而显着增加。施用方铁石对浮游植物或浮游动物种群没有影响。总体而言，在密西西比州西北部的Channel鱼育苗池中添加Azomite并没有有益的效果。