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

Schlegel, Alan J.; Assefa, Yared; Haag, Lucas A.; Thompson, Charles P.; Holman, Johnathon D.; Stone, L. R.

doi:10.2134/agronj2016.07.0387

Cited by 35 publications

(39 citation statements)

References 33 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Crop yields normalized for cropping intensity showed that the treatments with least time in nonvegetated fallow had the highest annualized grain and stover yields (Table 1). While summer fallow is still commonly used across the region (Hansen et al, 2012), our experimental data agree with recent literature indicating that annualized grain yields can be highest in more diverse and intense crop rotations (Peterson et al, 1998; Schlegel et al 2017). Furthermore, replacing fallow with forage crops can improve PUE and profitability (Nielsen et al, 2017).…”

Section: Resultssupporting

confidence: 90%

Climate Change Impacts on Yields and Soil Carbon in Row Crop Dryland Agriculture

Robertson

Zhang²,

Sherrod

et al. 2018

J of Env Quality

View full text Add to dashboard Cite

Dryland agroecosystems could be a sizable sink for atmospheric carbon (C) due to their spatial extent and level of degradation, providing climate change mitigation. We examined productivity and soil C dynamics under two climate change scenarios (moderate warming, representative concentration pathway [RCP] 4.5; and high warming, RCP 8.5), using long-term experimental data and the DayCent process-based model for three sites with varying climates and soil conditions in the US High Plains. Each site included a no-till cropping intensity gradient introduced in 1985, with treatments ranging from wheat-fallow (Triticum aestivum L.) to continuous annual cropping and perennial grass. Simulations were extended to 2100 using data from 16 global circulation models to estimate uncertainty. Simulated yields declined for all crops (up to 50% for wheat), with small changes after 2050 under RCP 4.5 and continued losses to 2100 under RCP 8.5. Of the cropped systems, continuous cropping had the highest average productivity and soil C sequestration rates (78

show abstract

Section: Resultssupporting

confidence: 90%

Climate Change Impacts on Yields and Soil Carbon in Row Crop Dryland Agriculture

Robertson

Zhang²,

Sherrod

et al. 2018

J of Env Quality

View full text Add to dashboard Cite

show abstract

“…8) are in agreement with previous findings (Assefa and Staggenborg, 2010;Assefa et al, 2012;Schlegel et al, 2016bSchlegel et al, , 2017. The results are also in line with previous findings of Stone et al (1996) and Assefa et al (2014) who concluded grain sorghum yields are greater than corn yields with less than 500 mm of total water available for crop use and corn yields are greater than sorghum yields when total available water supply is above 500 mm.…”

Section: Yield As a Function Of Available Soil Water At Planting And supporting

confidence: 92%

“…Differences in ASWP due to differences in crop rotation has been reported for wheat- (Nielsen et al, 2002), corn-, and grain sorghumbased systems (Schlegel et al, 2017(Schlegel et al, , 2016a, and those rotation systems with better ASWP were among the best yielding. Similarly, no-till systems increase ASWP compared with conventional tillage (Baumhardt et al, 2011;Benjamin, 1993;Jones and Popham, 1997;Fabrizzi et al, 2005) through increased precipitation storage efficiency (Farahani et al, 1998; that is the result of less soil disturbance and greater amounts of crop residue on the soil surface.…”

Section: Core Ideasmentioning

confidence: 91%

Dryland Corn and Grain Sorghum Yield Response to Available Soil Water at Planting

Schlegel

Lamm²,

Assefa

et al. 2018

Agronomy Journal

Self Cite

View full text Add to dashboard Cite

A gronomy J our n al • Volume 110 , I ssue 1 • 2 018 W ater availability at critical growth stages of crops is the major yield limiting factor in dryland crop production (Farahani et al., 1998;Allen, 2012). Dryland agriculture is a special case of rainfed agriculture practiced in arid and semiarid regions. In these regions when irrigation is not used, water conservation becomes the primary focus of management decisions because growing season precipitation is seldom suffi cient to fully meet evapotranspiration demand. Conditions of moderate to severe plant water stress occur during a substantial part of the year and storage of water during fallow for use by a subsequent crop is oft en practiced (Nielsen et al., 2016). Available soil water at planting and ISP are usually the only two sources of water for annual crops such as corn and grain sorghum grown in dryland systems. However, the singular contribution of ASWP for corn and grain sorghum yield was seldom studied.Th e impact of water availability on grain yields of corn and grain sorghum has been studied in depth through yield relationships with ISP or diff erent irrigation levels Payero et al., 2006;Klocke et al., 2011;Assefa et al., 2014;) and with crop water use (Nielsen and Vigil, 2017). Th e infl uence of cropping system on ASWP and on subsequent grain yield has been reported for wheat (Triticum aestivum L.) (Nielsen et al., 2002;Nielsen and Vigil, 2005) and results from these studies indicated that wheat yields were correlated with ASWP. Th e results from Nielsen and Vigil (2005) also suggest that the relationship between ASWP and wheat yield varied year-to-year depending on evaporative demand and ISP. Studies in water-yield relationships of proso millet (Panicum miliaceum L.), pea (Pisum sativum L.), triticale (Tritico secale rimpaui Wittm.), foxtail millet (Setaria italic L. Beauv.), corn, grain sorghum, bean (Phaseolus vulgaris L.), and sunfl ower (Helianthus annuus L.) (Lyon et al., 1995;Felter et al., 2006;Nielsen et al., 2009) suggest that the eff ect of ASWP was greater for short duration crops (bean, proso millet) compared with long duration crops (corn, grain sorghum, sunfl ower).Increase in ASWP due to changes in management practices was among the main factors that contributed to the greater portion of the 139% grain sorghum yield increase in the years 1939 to 1997 (Unger and Baumhardt, 1999 Core Ideas• Yield gains from available soil water at planting decreased as inseason precipitation increased.• Corn yield gain 27 to 33 kg ha -1 (mm available soil water at planting) -1 at in-season precipitation of 196 to 215 mm.• Corn yield gain 9 to 25 kg ha -1 (mm available soil water at planting) -1 as in-season precipitation increased to 288 to 354 mm.• Sorghum yield gain 12 to 22 kg ha -1 (mm available soil water at planting) -1 at in-season precipitation of 163 to 281 mm.• Sorghum yield gain 0 to 6 kg ha -1 (mm available soil water at planting) -1 at in-season precipitation of 315 to 382 mm.

show abstract

“…This was the case when we compared W-GS-F with W-C-GS-F and W-SF-F with W-C-SF-F rotations. This was due to the longer fallow period between winter wheat harvest and summer crop planting in the 3-yr rotations compared with the shorter fallow period between summer crop harvest to another summer crop planting in the 4-yr rotations (Schlegel et al, 2017). Second, between two 4-yr W-SC-SC-F rotations, there was no significant difference in ASW at planting of any of the crops except when sunflower was one of the summer crops involved.…”

Section: Available Soil Water By Depth 2000-2006mentioning

confidence: 90%

“…In dryland agriculture, availability of water at critical stages of crop growth is the major limiting factor for sustainable crop production (Peterson et al, 1996;Farahani et al, 1998;Allen, 2012). Therefore, research evaluating alternative dryland crop rotation systems has been based on the amount of available soil water (ASW) at the rooting depth of target crops, the amount of fallow precipitation accumulated for the next crop, fallow efficiency, and/or crop water productivity (Lafond et al, 1992;Huang et al, 2003;Schlegel et al, 2017;Nielsen and Vigil, 2018).…”

mentioning

confidence: 99%

Soil Water and Water Use in Long‐Term Dryland Crop Rotations

Schlegel

Assefa

Haag³

et al. 2019

Agronomy Journal

Self Cite

View full text Add to dashboard Cite

Dryland crop rotation systems are sustainable only if there is sufficient water available for profitable crop production. The objective of our study was to identify potential crop rotation systems for the central Great Plains and similar semiarid areas that increase soil water, fallow water accumulation, fallow efficiency, and water productivity of major crops. The study was conducted from 2000 through 2017 near Tribune, KS. Four summer crops [corn (Zea mays L.) (CR), grain sorghum (Sorghum bicolor L.) (GS), soybean (Glycine max L.) (SB), and sunflower (Helianthus annuus L.) (SF)] along with winter wheat (Triticum aestivum L.) (W) were grown in 1‐, 2‐, 3‐, and 4‐yr rotations, with most rotations including a fallow (F) phase. Rotations were W–CR–SB–F, W–F, W–CR–SF–F, W–GS–F, W–SF–F, and W–CR–GS–F from 2000 through 2006 and W–CR–F, continuous GS, W–F, W–GS–CR–F, W–GS–F, and W–CR–GS–F from 2008 through 2017. Results showed that available soil water (ASW) at corn planting was in the order W–CR–GS–F = W–CR–SB–F > W–CR–SF–F for 2000–2006 period and ASW and water productivity were in the order W–CR–GS–F = W–CR–F > W–GS–CR–F for the 2008–2017 period. The ASW in the 30–150 cm profile depth at sorghum planting and crop water productivity were in the order W–GS–F > W–CR–GS–F for the 2000–2006 period and in the order W–GS–CR–F = W–GS–F > W–CR–GS–F = GS–GS for the 2008–2017 period. ASW at wheat planting and crop water productivity were greater in W–F and W–GS–F in the wheat‐based rotations. Results consistently showed that with summer crop planting there was greater soil water following wheat than another summer crop. Core Ideas Soil water at planting of summer crop, prior off‐season soil water accumulation, water use, and crop water productivity were greater following wheat than following another summer crop. The longer fallow period between wheat harvest and grain sorghum planting and yield potential of grain sorghum compared with corn, sunflower, and soybean justifies wide adoption of winter wheat–grain sorghum–fallow in semi‐arid regions Soil water at wheat planting, fallow accumulation, water use of wheat, fallow efficiency, and crop water productivity were greater in winter wheat–fallow and winter wheat–grain sorghum–fallow of the wheat‐based rotations.

show abstract

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

Cited by 35 publications

References 33 publications

Climate Change Impacts on Yields and Soil Carbon in Row Crop Dryland Agriculture

Climate Change Impacts on Yields and Soil Carbon in Row Crop Dryland Agriculture

Dryland Corn and Grain Sorghum Yield Response to Available Soil Water at Planting

Soil Water and Water Use in Long‐Term Dryland Crop Rotations

Contact Info

Product

Resources

About