Irrigation and Nitrogen Effects on Tall Wheatgrass Yield in the Southern High Plains

Lauriault, Leonard M.; Kirksey, R. E.; Donart, Gary B.

doi:10.2134/agronj2002.7920

Cited by 18 publications

(13 citation statements)

References 14 publications

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“…Although forage mass could be increased significantly through irrigation (Jensen et al, 2001; Lauriault et al, 2002; Smeal et al, 2005; Wang et al, 2009), frequent or large amounts of irrigation would hamper the sustainability of water resources and increase related equipment and labor costs (Zhang et al, 2003). Increasing crop water use efficiency (WUE) was therefore considered as a strategy to save limited water resources (Farah et al, 1997; DaCosta and Huang, 2006).…”

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confidence: 99%

“…In addition, soil water storage changed very little due to the extreme cold weather through the whole winter (Wang and Li, 2009). The good soil water condition before winter has been found to improve the overwintering ability of other perennial grasses and the growth ability after next reviving (Liu et al, 1995; Justes et al, 2002; Lauriault et al, 2002). Thus, we hypothesized that storing water into the soil before winter might improve the soil moisture condition and enhance the mass and WUE of next year.…”

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Forage Mass and Water Use Response to Irrigation Time in North China

Wang

Gong

et al. 2010

Agronomy Journal

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Siberian wildrye grass (Elymus sibiricus L.) is the primary forage species in alpine cold areas of North China. Scheduled irrigation is an important way to increase the forage mass because of water shortage and the inconsistency between rainy season and the most intense water use period. Irrigation experiments were conducted during 2006 to 2008 to study the feasibility of applying single irrigation before winter (WI) or at the elongating stage (EI), irrigating at these two stages (WEI, in 2006-2007), and irrigating before winter with mulching straw before next reviving (WMI, only in 2008) to increase forage mass (FM) and water use effi ciency (WUE). Th e results showed that irrigation at the elongating stage played the most important role in mass and WUE increase. Th e FMs under EI achieved 6381, 6883, and 5763 kg ha −1 , increased by 66, 218, and 99%, respectively, and WUE was 1.9, 2.3, and 1.8 kg m −3 , increased by 56, 134, and 81%, respectively, compared with no irrigation treatment (NI) in 3 yr. Th e FMs under WI were increased by 40, 53, and 44%, and the WUE was increased by 30, 31, and 34%, respectively. No signifi cant FM and WUE increment under WEI were found compared with EI during 2006 to 2007. Th e FM and WUE under WMI were higher than values under EI in 2008. Th erefore, EI can achieve relatively high production and WUE of Siberian wildrye grass. If water resources at the elongating stage were defi cient, the WMI treatment might be a good choice.

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Forage Mass and Water Use Response to Irrigation Time in North China

Wang

Gong

et al. 2010

Agronomy Journal

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“…Irrigation plays an important role in maintaining and increasing forage yield worldwide (Jensen et al, 2001; Lauriault et al, 2002; Smeal et al, 2005). Crop water requirement of Siberian wildrye grass ranges from 350 to 500 mm whereas the average seasonal rainfall is only 278.8 mm in the APENC (Liu and Chen, 2004; Wang et al, 2006), supplemental irrigation is therefore required to overcome water shortages.…”

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Single Irrigation Can Achieve Relatively High Production and Water Use Efficiency of Siberian Wildrye Grass in the Semiarid Agropastoral Ecotone of North China

Wang

Gong

et al. 2009

Agronomy Journal

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Siberian wildrye grass (Elymus sibiricus L.) is widely planted in the agropastoral ecotone of North China (APENC). Scheduled irrigation is an important approach to increase the forage yield in this semiarid region. Based on fi eld experiments conducted in Bashang Plateau in APENC during 2002 to 2004, we studied the feasibility of applying single irrigation (SI) to increase forage yield by bringing the soil water storage in the root zone (0-60 cm) to fi eld capacity at the elongating stage. Th e results showed that Siberian wildrye grass consumed water most rapidly during the elongating stage. With 48 to 62 mm of water applied during elongating stage, forage yields reached 6000 kg ha -1 , a 110% increase compared with no irrigation (NI). With full irrigation (FI) in the growing season, forage yield was only increased by 10% compared with that under SI. Th e average water use effi ciency (WUE) under SI was 1.9 kg m -3 , a 76% increase compared with NI or a 10% increase compared with FI. Th e average irrigation water use effi ciency (IWUE) under SI was 10.8 kg m -3 which was almost three times that under FI. Th erefore, a single irrigation can be a simple agricultural practice for local farmers, and has great potential to contribute to sustainability of semiarid APENC. In addition, forage yield and WUE showed a quadratic trend with total evapotranspiration (ET). Th e maximum forage yield in this semiarid area was about 6900 kg ha -1 at 390 mm ET, whereas the maximum WUE was 1.9 kg m -3 at 360 mm ET.

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“…In this study, tall wheatgrass cultivars performed better in terms of biomass production than they did in another study that was carried out under marginal conditions in the USA, where yields of 3.1 Mg DM•ha −1 were reported [58]. However, studies under irrigation or located in areas without biophysical constraints provided better yields for tall wheatgrass cultivars, with biomass productions over 10 Mg DM•ha −1 in North America [37,59] and of 17.2 Mg DM•ha −1 in Germany for biogas production [23].…”

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Long-Term Yield and Quality Performance of Perennial Energy Grasses (Agropyron spp.) on Marginal Land

et al. 2020

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The cultivation of perennial grasses is one of the most desirable alternatives as energy feedstock, but it is difficult to achieve competitive yields under Mediterranean marginal conditions. The aim of this study was to assess the performance of three cool-season grasses (Agropyron spp.) from an agronomic and energetic point of view by comparing the dry matter (DM) yields, rain use efficiency, chemical composition, and biomass quality over an eight-year period in Spain under marginal rainfed conditions. The tall wheatgrass (Agropyron elongatum (Host) Beauv.) cultivars, Alkar (4.8 Mg DM·ha−1) and Jose (4.7 Mg DM·ha−1), achieved the highest yields. Productions below 0.5 Mg DM·ha−1 were obtained when rainfall was lower than 150 mm between March and June. The biomass obtained from the tested grasses showed relatively high contents of ash, silicon, and alkali elements. Net calorific values ranged between 16.7 and 18.5 MJ·kg−1 db. Differences in the composition among species and cultivars are not likely to affect their combustion behavior from a practical point of view. The ash content, as well as the concentrations of K, S, Na, and Cl, tended to decrease over the years. The results offered would be very useful for the implementation of this type of crop in marginal land.

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Irrigation and Nitrogen Effects on Tall Wheatgrass Yield in the Southern High Plains

Cited by 18 publications

References 14 publications

Forage Mass and Water Use Response to Irrigation Time in North China

Forage Mass and Water Use Response to Irrigation Time in North China

Single Irrigation Can Achieve Relatively High Production and Water Use Efficiency of Siberian Wildrye Grass in the Semiarid Agropastoral Ecotone of North China

Long-Term Yield and Quality Performance of Perennial Energy Grasses (Agropyron spp.) on Marginal Land

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