Abstract Rockwool is an inert growing media popular in the hydroponics industry. Eventually the rockwool fills with plant material and must be replaced and the residuals are disposed. Composting of this material will conserve landfill space. Although the rockwool itself is stable, roots and other plant materials remaining after harvest can decompose. We studied the effect of composting greenwaste feedstock mixed with spent rockwool in the amount of 10% volume on plant growth. A greenhouse experiment was conducted with two types of soils: sandy loam and clay, each with and without rockwool, and applied at rates 0, 25, 50, and 100 t ha−1 to pots which were then seeded with okra, tomato, or chili pepper. Results indicate that plant growth of all three crops was unaffected by the presence of (10% volume) spent rockwool in the compost. In all cases, increase in application rate of compost enhanced plant growth significantly. While the growth of tomato was unaffected by soil type, shoot weights of okra and chili pepper plants were significantly lower in sandy soil compared to clay loam soil.

中文翻译：

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堆肥绿色废物和岩棉对秋葵、番茄和辣椒植物生长的影响

摘要 Rockwool 是一种在水培行业中流行的惰性生长介质。最终，岩棉充满了植物材料，必须更换并处理残余物。这种材料的堆肥将节省垃圾填埋场空间。虽然岩棉本身很稳定，但收获后残留的根和其他植物材料会分解。我们研究了混合 10% 体积的废岩棉的绿色废物原料堆肥对植物生长的影响。使用两种土壤进行了温室试验：砂壤土和粘土，每种土壤都含有和不含岩棉，并以 0、25、50 和 100 t ha-1 的比例施用于花盆，然后在盆中播种秋葵、番茄或辣椒。结果表明，所有三种作物的植物生长都不受堆肥中存在（10% 体积）废岩棉的影响。在所有情况下，堆肥施用量的增加显着促进了植物的生长。虽然番茄的生长不受土壤类型的影响，但与粘壤土相比，沙质土壤中秋葵和辣椒植株的茎重明显较低。