The effect of cover crop and crop rotation on soil water storage and on sorghum yield

Azevedo, D. M. P. de; Landivar, Juan; Vieira, Robson Macedo; Moseley, D

doi:10.1590/s0100-204x1999000300010

Cited by 12 publications

(5 citation statements)

References 16 publications

(15 reference statements)

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“…The significantly lower yield of sorghum after sorghum compared with sorghum after wheat reported here is in agreement with previous reports (Azevedo et al, 1999;Holland and Herridge. 1992;Janzen et al, 1987;Williams et al, 2000).…”

Section: Resultssupporting

confidence: 94%

Yield and Soil Water in Three Dryland Wheat and Grain Sorghum Rotations

et al. 2017

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Diverse crop rotations sustain crop productivity by increasing crop water productivity and improving soil structure. Th e objective of this study was to compare two 4-yr winter wheat (Triticum aestivum L.) and grain sorghum (Sorghum bicolor L.) rotations in terms of grain yield, available soil water, and water productivity along with continuous winter wheat. A fi eld study was conducted from 1996 through 2015 on a deep silt loam soil near Tribune, KS. Th e study consisted of three crop rotations: continuous annual wheat (WW), wheat-wheat-sorghumfallow (WWSF), and wheat-sorghum-sorghum-fallow (WSSF). Grain yield, biomass, water productivity, and soil water were all greater for sorghum aft er wheat compared with sorghum aft er sorghum. Similarly, grain yield, biomass, water productivity, and soil water were all greater for wheat aft er fallow compared with wheat aft er wheat. Th e yield of the second wheat crop was 80% of the fi rst wheat crop in WWSF, whereas the yield of a second sorghum was only 63% of the fi rst sorghum crop in WSSF. Th e average crop water productivity (7 kg ha -1 mm -1 ) of the WSSF rotation was greater than the other rotations. On average, the WSSF system produced 2.05 Mg ha -1 yr -1 wheat equivalent yield (WEY), which was similar to the 1.96 Mg ha -1 yr -1 WEY from the WWSF rotation and greater than WW, which produced 1.53 Mg ha -1 yr -1 of wheat grain. A WSF rotation would have produced 2.0 Mg ha -1 yr -1 WEY, so the 4-yr rotations were not more productive than a 3-yr WSF rotation.

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Section: Resultssupporting

confidence: 94%

Yield and Soil Water in Three Dryland Wheat and Grain Sorghum Rotations

et al. 2017

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“…Significantly lower yield and biomass of corn after corn or sorghum compared to after wheat reported here is in support of others finding of relative lower yield in continuous cropping versus rotation with other crops (Schneekloth et al, 1991;Porter et al, 1997;Erickson, 2008;Gentry et al, 2013). Also, significantly lower yield of sorghum after sorghum compared to after wheat was reported (Janzen et al, 1987;Holland and Herridge, 1992;Azevedo et al, 1999;Williams et al, 2000). However, we didn't find a significant difference between C-C and C-GS or GS-GS and C-GS rotation in both yield and biomass of corn and sorghum, respectively.…”

Section: Crop Yieldsupporting

confidence: 90%

Productivity and Profitability of Four Crop Rotations under Limited Irrigation

Schlegel¹,

Assefa²,

O’Brien³

2020

Applied Engineering in Agriculture

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Abstract. Selection of optimal crops and cropping systems for most efficient water use specific for local environments can improve global water security. Limited irrigation with ground water is one alternative to alleviate crops from low amount or unevenly distributed water in the growing seasons in semi-arid regions. The main objectives of this research were to quantify yield-water use relationships of three limited irrigated crops, determine effect of crop selection on profitability with limited irrigation, and identify profitable and alternative crop production systems. A field study was conducted at the Kansas State University Southwest Research-Extension Center near Tribune, Kansas, from 2012 through 2017. There were four treatments in the study, two 1-yr systems of continuous corn ( L.) (C-C) and continuous grain sorghum (L.) (GS-GS) and two 2-yr rotations of corn-grain sorghum (C-GS) and corn-winter wheat ( L.) (C-W). Overall corn yield after wheat (C-W) was about 1.4 Mg (ha)-1 greater than C-C. Corn and sorghum yields were similar grown as monoculture or in rotation with each other. Available soil water at corn planting and during the growing season were 20 to 40 mm (240 cm profile-1) less in the C-GS rotation compared with C-C and C-W rotations. Corn yield increased as water use (yield-water use) increased in C-W rotation but yield-water use relationships tended to be negative in C-C and C-GS rotations. Grain sorghum yield increased with water use in both rotations but at a greater rate in GS-GS compared with C-GS. Despite greater corn grain yield in C-W, our economic analysis showed that wheat was the least profitable of the three crops causing the C-W rotation to be least profitable. In this study, the most profitable limited irrigation crop rotation was corn-grain sorghum (C-GS). Keywords: Corn-sorghum-wheat, Crop rotation, Limited irrigation, Profitability, Supplementary irrigation, Sustainability.

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“…Moreover, Liebman and Dyck (1992); Azevedo et al (1999); Campbell et al (1991) and Stanger and Lauer (2008) found that crop rotation can improve crop yield significantly. This is attributed to the existence of a large amount of N concentration under different rotation sequences.…”

Section: Introductionmentioning

confidence: 99%

The effect of climate change adaptation strategy on farm households welfare in the Nile basin of Ethiopia

Asmare

Teklewold²,

Mekonnen

2019

IJCCSM

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Purpose This study aims to examine the effect of crop diversification (CD), as a climate change adaptation strategy, on farm household’s welfare in terms of farm income and demand for labor. It explores whether adoption of CD is a win-win strategy on household income and demand for on-farm labor. It also examines the determinants of rural household’s net farm income and family labor demand. Design/methodology/approach A household-plot level data were collected in 2015 from 929 rural farm households and 4,778 plots in the Nile Basin of Ethiopia. The data comprise farm and household characteristics accompanied by geo-referenced climate data such as long-term average temperature and amount and variability of growing season rainfall. The authors estimate an endogenous switching regression model to measure the effect of CD on the farm household’s welfare, using net farm income and household labor demand as a welfare indicator. Findings The results indicate heterogeneous effects of climate variables on farm income between adopters and non-adopters of CD. The study also confirms the win-win effect of adoption of CD with a positive and significant effect on farm income and a reduction in demand for on-farm labor. The results suggest that adoption of CD helps improve the well-being of farm households and build a resilient agricultural system. Research limitations/implications As the study used a cross-sectional data, it is limited to show the time effect of practicing CD on the household’s welfare. Originality/value First, the authors investigate, to their knowledge for the first time, the existence of synergy or tradeoff in the effect of CD on two dimensions of rural households’ welfare (net farm income and labor demand). Second, they investigate the heterogeneous effect of climate change adaptation strategies on the farm household’s welfare between adopters and non-adopters. This is unlike previous studies that consider climate change adaptation strategies as having a homogeneous effect. However, this approach is inappropriate since the effect of adaptation strategies is different for adopters and non-adopters.

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The effect of cover crop and crop rotation on soil water storage and on sorghum yield

Cited by 12 publications

References 16 publications

Yield and Soil Water in Three Dryland Wheat and Grain Sorghum Rotations

Yield and Soil Water in Three Dryland Wheat and Grain Sorghum Rotations

Productivity and Profitability of Four Crop Rotations under Limited Irrigation

The effect of climate change adaptation strategy on farm households welfare in the Nile basin of Ethiopia

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