کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4383293 | 1304259 | 2008 | 9 صفحه PDF | دانلود رایگان |

Papermill biosolids (PB) have been used as soil conditioners on agricultural soils, to reclaim mining soils, and to rehabilitate old landfill sites. Earthworm population responses to a de-inked PB were measured on three agricultural soils in southern Ontario, Canada. Four rates of PB, 0, 50, 100, and 150 Mg ha−1, were applied annually for 3 years. In addition, plots receiving the PB treatments were planted to corn (Zea mays L.) and soybean (Glycine max L.). Earthworm populations prior to PB applications ranged from 9 to 22 individuals m−2 on the sandy loam and loam soils. Linear increases in earthworm populations were observed ranging from approximately 153 to 280 individuals m−2 after 3 years of PB amendments. On the clay loam soil, initial fall earthworm populations were about 124 individuals m−2 which increased to 482 individuals m−2 after 2 years of PB applications. Earthworm population increases to PB amendments were evident after 2–3 years at the sites measured.
Journal: Applied Soil Ecology - Volume 38, Issue 3, March 2008, Pages 230–238