Cover Crops have Negligible Impact on Soil Water in Nebraska Maize-Soybean Rotation

被引：23

作者：

Barker, J. Burdette ^{[1
]}

Heeren, Derek M. ^{[1
]}

Koehler-Cole, Katja ^{[2
]}

Shapiro, Charles A. ^{[3
]}

Blanco-Canqui, Humberto ^{[2
]}

Elmore, Roger W. ^{[2
]}

Proctor, Christopher A. ^{[2
]}

Irmak, Suat ^{[1
]}

Francis, Charles A. ^{[2
]}

Shaver, Tim M. ^{[4
]}

Mohammed, Ali T. ^{[1
]}

机构：

[1] Univ Nebraska, Biol Syst Engn Dep, LW Chase Hall,3605 Fair St, Lincoln, NE 68583 USA

[2] Univ Nebraska Lincoln, Dept Agron & Hort, 176 Keim Hall,1825 N 38th St, Lincoln, NE 68583 USA

[3] Univ Nebraska Lincoln, Haskell Agr Lab, 57905 866 Rd, Concord, NE 68728 USA

[4] Univ Nebraska Lincoln, West Cent Res & Extens Ctr, 402 State Farm Rd, North Platte, NE 69101 USA

来源：

AGRONOMY JOURNAL | 2018年 / 110卷 / 05期

基金：

美国食品与农业研究所;

关键词：

EVAPOTRANSPIRATION; IRRIGATION; DRAINAGE; IOWA;

D O I：

10.2134/agronj2017.12.0739

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

One perceived cost of integrating winter cover cropping in maize (Zea mays L.) and soybean [Glycine max ( L.) Merr.] rotation systems is the potential negative impact on soil water storage available for primary crop production. The objective of this 3-yr study was to evaluate the effects of winter cover crops on soil water storage and cover crop biomass production following no-till maize and soybean rotations. Locations were near Brule (westcentral), Clay Center (south-central), Concord (northeast), and Mead (east-central), NE. Treatments included crop residue only (no cover crop) and a multi-species cover crop mix, both broadcast-seeded before primary crop harvest and drilled following harvest. Pre-harvest broadcast-seeded cereal rye (Secale cereale L.) was also included in the last year of the study because rye was observed to be the dominant component of the mix in spring biomass samples. Soil water content was monitored using neutron probe or gravimetric techniques. Mean aboveground cover crop biomass ranged from practically 0 to similar to 3,200 kg ha(-1) across locations and cover crop treatments. Differences in the change in soil water storage between autumn and spring among treatments occurred in 4 of 20 location-rotation phase-years for the top 0.3 m of soil and 3 of 20 location-rotation phase-years for the 1.2-m soil profile. However, these differences were small (<11 mm for the top 0.3 m and <26 mm for the 1.2-m profile). In conclusion, winter cover crops did not have an effect on soil water content that would impact maize and soybean crop production.

引用

页码：1718 / 1730

页数：13

共 26 条

[21] Soil-Water Dynamics, Evapotranspiration, and Crop Coefficients of Cover-Crop Mixtures in Seed Maize Cover-Crop Rotation Fields. I: Soil-Water Dynamics and Evapotranspiration [J].

Sharma, Vasudha ;

Irmak, Suat ;

Sharma, Vivek ;

Djaman, Koffi ;

Odhiambo, Lameck .

JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, 2017, 143 (09)

[22] Soil-Water Dynamics, Evapotranspiration, and Crop Coefficients of Cover-Crop Mixtures in Seed Maize Cover-Crop Rotation Fields. II: Grass-Reference and Alfalfa-Reference Single (Normal) and Basal Crop Coefficients [J].

Sharma, Vasudha ;

Irmak, Suat .

JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, 2017, 143 (09)

[23]

Snapp SS, 2005, AGRON J, V97, P322

[24] Evapotranspiration of irrigated and rainfed maize-soybean cropping systems [J].

Suyker, Andrew E. ;

Verma, Shashi B. .

AGRICULTURAL AND FOREST METEOROLOGY, 2009, 149 (3-4) :443-452

[25]

Unger PW, 1998, J SOIL WATER CONSERV, V53, P200

[26]

Yonts C.D., 2008, PREDICTING LAST IRRI

← 1 2 3 →