On the cover: Steve Sorrells helping to determine mass of harvested tall fescue and subsample forage for nutritive value on collaborating farm in Haywood County, North Carolina. For more information, please see this issue's article, 𠄌Soil‐test biological activity with the flush of CO2: VII. Validating nitrogen needs for fall‐stockpiled forage𠄍, by Franzluebbers and Poore. Photo Credit: Alan Franzluebbers.

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封面图片，第112卷，第3期

封面人物：史蒂夫·索瑞斯（Steve Sorrells）帮助确定北卡罗来纳州海伍德县合作农场中收获的高羊茅和亚采样草料的营养价值。有关更多信息，请参见本期文章“用CO2冲洗土壤测试生物活性：VII”。Franzluebbers和Poore验证了秋季储存的饲草的氮需求。图片提供：Alan Franzluebbers。