Choice of Summer Fallow Replacement Crops Impacts Subsequent Winter Wheat

Agronomy Journal - Tập 99 Số 2 - Trang 578-584 - 2007
Drew J. Lyon1, D. G. Nielsen2, Douglas G. Felter3, Paul Burgener1
1Univ. of Nebraska Panhandle Research & Extension Center 4502 Ave. I Scottsbluff NE 69361
2USDA‐ARS Central Great Plains Research Station 40335 County Road GG Akron CO 80720
3John Deere, 8000 Jersey Ridge Road, Davenport, IA 52807

Tóm tắt

Winter wheat (Triticum aestivum L.) is the foundation of dryland cropping systems in the Central Great Plains. The objective of this study was to quantify the effects of four short‐season spring‐planted crops used to replace summer fallow on the subsequent winter wheat crop. Wheat was seeded into four crop stubbles [spring triticale (×Triticosecale Wittmack), dry pea (Pisum sativum L.), foxtail millet (Setaria italica L. Beauv.), and proso millet (Panicum miliaceum L.)] at sites near Akron, CO, and Sidney, NE, in the fall of 2004 and 2005. These summer fallow replacement crops were planted into silt loam soils at three different soil water levels at planting (low, medium, and high). Winter wheat water use was 3.6 cm greater, and grain yield was 662 kg ha−1 greater in the high water treatment compared with the low water treatment averaged across all sites and years. Winter wheat used an average of 4.3 cm more water following early planted summer crops (triticale and dry pea) than after late planted summer crops (foxtail and proso millet), but this increased water use did not consistently translate into increased grain yield as a result of terminal drought at Sidney in 2006. The high water treatment always had a positive net return. The high cost of pea seed ($3.30 kg−1, USD) strongly reduced profitability. The flexible summer fallow cropping system appears to be most applicable when using short‐duration summer annual forage crops such as triticale and foxtail millet.

Từ khóa


Tài liệu tham khảo

10.2134/agronj2001.932290x

Dao T.H., 1993, Tillage and winter wheat residue management effects on water infiltration and storage, Soil Sci. Soc. Am. J., 63, 186

10.1017/S0890037X00045012

10.2134/jpa1996.0216

10.1016/S0065-2113(08)60505-2

10.2134/agronj2005.0341

Greb B.W., 1979, Reducing drought effects on cropland in the west‐central Great Plains

Greb B.W., 1983, Dryland agriculture, 57

10.2134/agronj1997.00021962008900020012x

Klocke N.L., 1990, How soil holds water

10.2134/agronj2002.1980

10.2135/cropsci2004.8550

Lyon D.J., 1995, Water‐yield relations of several spring‐planted dryland crops following winter wheat, J. Prod. Agric., 8, 281, 10.2134/jpa1995.0281

McGee E.A., 1997, Water storage efficiency in no‐till dryland cropping systems, J. Soil Water Cons., 52, 131

10.2134/agronj1994.00021962008600060010x

10.2134/jpa1999.0193

10.2134/agronj2005.0364

10.2134/agronj2004.0071

10.2134/agronj2002.9620

10.2134/agronj1994.00021962008600030019x

10.1016/S0167-1987(98)00107-X

10.2134/jpa1996.0180

10.1111/j.1744-7348.2004.tb00326.x

10.2136/sssaj1993.03615995005700050032x

SAS Institute, 2001, SAS v. 8.0

10.2134/agronj2006.0042

10.1016/0167-1987(87)90056-0

10.2136/sssaj1984.03615995004800040037x

Thông tin
Thông tin xuất bản

Agronomy Journal

Tập 99 Số 2

578-584

Thông tin tác giả