Yield, irrigation response, and water productivity of deficit to fully irrigated spring canola

Hergert, Gary W.; Margheim, James F.; Pavlišta, Alexander D.; Martin, Derrel L.; Supalla, Raymond J.; Isbell, Terry A.

doi:10.1016/j.agwat.2016.02.003

Cited by 31 publications

(26 citation statements)

References 26 publications

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“…If recent alternative oilseed crops are to compete for crop acreage, innovative and faster breeding improvement will be required (Runck et al, 2014) as well as research into weed control options. Disease severity (downey mildew) during 2009 and 2010 was more pronounced on camelina than canola at our locations (Hergert et al, 2016). For canola, years of genetic improvement have created cultivars that have resistance to a number of diseases.…”

Section: Camelina Managementmentioning

confidence: 74%

“…Continued water use was related to pod and seed development. Maximum water use approached values for canola (Hergert et al, 2016) and maize (Payero et al, 2006) during the hot and dry conditions of 2007 and 2008.…”

Section: Yield Response To Irrigation and Evapotranspirationmentioning

confidence: 89%

“…The irrigation timing used in this experiment was designed to prolong flowering and limit stress during seed fill. This strategy was patterned after canola (Faraji, et al, 2009;Gan et al, 2004;Hergert et al, 2016;Kamkar, et al, 2011). Previous research has shown that for most grain crops, applying limited water around flowering through early grain fill provides the greatest response to water (Anapalli et al, 2014;Hergert et al, 1993;Klocke et al, 1989).…”

Section: Methodsmentioning

confidence: 99%

“…The concept of deficit irrigation has been known for many years (English, 1990) and has been researched as a production strategy on many conventional crops in Nebraska (Garrity et al, 1982;Hergert et al, 1993;Klocke, et al, Payero, et al, 2006;1989;Schneekloth et al, 1991) and more recently on canola (Hergert et al, 2016;Pavlista et al, 2016b), but not camelina. The goal of deficit irrigation is to manage irrigation timing so the resulting water stress has less of a negative impact on grain yield.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Irrigation response and water productivity of deficit to fully irrigated spring camelina

Hergert

Margheim

Pavlišta

et al. 2016

Agricultural Water Management

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Section: Camelina Managementmentioning

confidence: 74%

Section: Yield Response To Irrigation and Evapotranspirationmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Irrigation response and water productivity of deficit to fully irrigated spring camelina

Hergert

Margheim

Pavlišta

et al. 2016

Agricultural Water Management

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“…In these agro-climate and seasonal scenarios, the vegetation canopy of non-irrigated crops is usually insignificantly different from irrigated crops, though the yield may differ at the end of the growing season [47]. For that reason, irrigation classification is essentially an arduous procedure since the phenological difference in vegetation canopy is subtle for classification schemes to reliably detect the spectral difference between irrigated and non-irrigated surfaces.…”

Section: Application In Humid To Arid Climate Regimes and Wet To Drymentioning

confidence: 99%

Land Use Classification: A Surface Energy Balance and Vegetation Index Application to Map and Monitor Irrigated Lands

Pun¹,

Mutiibwa

2017

Remote Sensing

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Irrigated agriculture consumes the largest share of available fresh water, and awareness of the spatial distribution and application rates is paramount to a functional and sustainable communal consumptive water use. This remote sensing study leverages surface energy balance fluxes and vegetation indices to classify and map the spatial distribution of irrigated and non-irrigated croplands. The purpose is to introduce a classification scheme applicable across a wide variation in regional climate and inter-growing seasonal precipitation. The rationale for climate and inter-growing seasonal adaptability is founded in the derivation and calibration of the scheme based on the wettest growing season. Therefore, the scheme becomes a more efficient classifier during normal and dry growing seasons. Using empirical distribution functions, two indices are derived from evapotranspiration fluxes and vegetation indices to contrast and classify irrigated croplands from non-irrigated. The synergy of the two indices increases the classification proficiency by adding another classifying layer which re-characterizes misclassified croplands by the base index. The scheme was applied to a region with wide climate variation and to multiple years of growing seasons. The results presented, in cross validation with groundtruth, show an accurate and consistent approach to classify irrigation with overall accuracy of 92.1%, applicable from humid to semi-arid climate, and from dry to normal and wet growing seasons.

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Influence of soils and different phases of reproductive growth stage on transpiration efficiency of irrigated canola

Tfwala

Haka

Rensburg

et al. 2020

Irrigation and Drainage

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Much has been reported on the agronomic aspects of canola (Brassica napus L.), but there is a lack of information on the crop's transpiration (T). The objective of this study was to evaluate the influence of soils and growth periods on the T, transpiration efficiency (TE) and transpiration efficiency coefficient (TEC) of canola under irrigation. Twenty-four lysimeters (2.5 m 2) were used for the study. The experimental treatments comprised two soil forms and four growth phases during the reproductive stage, all replicated three times. Irrigation was applied weekly through a surface drip system and a water table was maintained at 1200 mm from the surface through subirrigation. Soil water content was monitored using a neutron probe. The contribution of an accessible water table was up to 60% of the total T requirement of the crop during the investigation period. TE, calculated as above-ground biomass per unit transpiration, ranged between 2.81 and 3.32 g m −2 mm −1. TEC, obtained by normalizing TE to the vapour pressure deficit, resulted in values between 3.82 and 4.99 g kPa mm −1. Both TE and TEC were significantly different between growth periods and not amongst soils.

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Yield, irrigation response, and water productivity of deficit to fully irrigated spring canola

Cited by 31 publications

References 26 publications

Irrigation response and water productivity of deficit to fully irrigated spring camelina

Irrigation response and water productivity of deficit to fully irrigated spring camelina

Land Use Classification: A Surface Energy Balance and Vegetation Index Application to Map and Monitor Irrigated Lands

Influence of soils and different phases of reproductive growth stage on transpiration efficiency of irrigated canola

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