Early impacts of cover crop selection on soil biological parameters during a transition to organic agriculture

Although Texas is not widely known for organic production, it is responsible for most organic peanut production in the US. When managed effectively, this can be a lucrative practice due to consumer demands. However, farmers pursuing organic management must undergo a three-year transition period to obtain United States Department of Agriculture (USDA) certification, which is often associated with depressed yields. The objective of this study was to measure the impact of organic management and cover crop selection on biological indicators of soil health during the second year of transitioning to an organic cotton-peanut rotation in West Texas. We conducted a field study at 2 locations, and soil health indicators including in situ respiration, carbon mineralization, enzyme activities, and phospholipid fatty acids (PLFAs) were measured.
The use of a cover crop resulted in generally greater biological activities compared to the fallow after only one cover crop rotation, representing early el..., Please refer to \"Early Impacts of Cover Crop Selection on Soil Biological Parameters During a Transition to Organic Agriculture\" for methodology. , , # Data from: Early Impacts of Cover Crop Selection on Soil Biological Parameters During a Transition to Organic Agriculture

## Description of the data and file structure

Tabs labelled “ConventionalOnly” include data solely from conventionally managed plots. Tabs labelled “OrgCon” contain data from both organically managed and conventionally managed plots for split-plot analysis.

Missing or uncollected data are depicted with “.”

Variable information:

-        Obs = number of observations

-        Location = site location

                        -   Lubb = Lubbock, TX

                        -   Vern = Vernon, TX

-        Event = sampling event (April, May, June, July, August, September, and November; labelled numerically)

-        Depth = sampling depth

                           -   1 = 0-10 cm

                           -   2 = 10-20 cm

-        Plot_no = plot number

-        Rep = replicate number

-        Trt = treatment

                            -   2 = organic, ry...

尽管得克萨斯州并非以有机农业生产广为人知，但其却贡献了美国绝大多数的有机花生产量。若管理得当，依托消费者需求，有机种植可成为一项高收益的经营模式。然而，采用有机种植管理的农户需经历三年过渡期，方可获得美国农业部（United States Department of Agriculture, USDA）认证，且该过渡期往往伴随产量下降。本研究旨在探究美国西部得克萨斯州在向有机棉-花生轮作模式转型的第二年中，有机种植管理与覆盖作物选择对土壤健康生物学指标的影响。我们在2个试验地点开展了田间试验，测定了包括原位呼吸、碳矿化、酶活性以及磷脂脂肪酸（phospholipid fatty acids, PLFAs）在内的多项土壤健康指标。
仅经过一轮覆盖作物轮作后，覆盖作物种植模式下的土壤生物活性总体上高于休耕模式，这体现了早期的……相关结果，请参考《Early Impacts of Cover Crop Selection on Soil Biological Parameters During a Transition to Organic Agriculture》一文获取试验方法。# 数据来源：《Early Impacts of Cover Crop Selection on Soil Biological Parameters During a Transition to Organic Agriculture》

## 数据与文件结构说明
标签为"ConventionalOnly"的工作表仅包含常规管理地块的数据；标签为"OrgCon"的工作表则包含有机管理与常规管理地块的数据，用于裂区分析。
缺失或未采集的数据以"."表示。
变量信息：
- Obs = 观测值数量
- Location = 试验地点
- Lubb = 得克萨斯州拉伯克市（Lubbock, TX）
- Vern = 得克萨斯州弗农市（Vernon, TX）
- Event = 采样事件（涵盖4月、5月、6月、7月、8月、9月及11月，以数字标注）
- Depth = 采样深度
- 1 = 0-10 cm
- 2 = 10-20 cm
- Plot_no = 地块编号
- Rep = 重复次数
- Trt = 处理方式
- 2 = 有机种植，黑麦草……