Temperature and water availability effects on radiation and water use efficiencies in alfalfa (Medicago sativa L.)

Collino, D. J.; Dardanelli, J. L.; Luca, Marcos Javier de; Racca, R. W.

doi:10.1071/ea04050

Cited by 29 publications

(23 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this experiment, WUE increased with the decreasing irrigation level; this varying trend was also found in some studies [21,32,60]. Erice et al [61] found that the WUE increased under a drought of 14 days and declined after a recovery period.…”

Section: Water Use Efficiencymentioning

confidence: 53%

Alfalfa Water Use and Yield under Different Sprinkler Irrigation Regimes in North Arid Regions of China

2017

Sustainability

View full text Add to dashboard Cite

Alfalfa (Medicago sativa) is one of the major crops grown in Northern China in recent years, however, the current serious water shortage conditions present a challenge to the growth of this crop, especially if efficient use of water is considered in forage production for sustainability. This study aimed to evaluate alfalfa productivity and water use efficiency (WUE) under different sprinkler irrigation levels. This experiment was conducted at Shiyanghe Experimental Station for Water-Saving in Agriculture and Ecology of China Agricultural University in Wuwei, Gansu, China, over a period of two years. There were three irrigation treatments: A1: 100% measured evapotranspiration (ETc) of alfalfa; A2: irrigation amount was 66% of A1; A3: irrigation amount was 33% of A1; and a control of A4: no irrigation during the growing season. A randomized block design with three replications were applied. The results showed that the ETc and forage yield of alfalfa decreased, while WUE and crude protein (CP) increased with the decreasing irrigation amounts. The seasonal average ETc and yield ranged from 412 mm to 809 mm and from 11,577 to 18,636 kg/ha, respectively, under different irrigation levels. The highest yields were obtained from the first growth period in all treatments in both years, due to the winter irrigation and the longest growth period. Alfalfa grown under lesser irrigation treatment conditions had higher variability in ETc and yield, mainly due to the variability in the amount of rainfall during the growth period. The seasonal average WUE of treatments ranged from 22.78 to 26.84 kg/(mm·ha), and the highest WUE was obtained at the first growth period, regardless of treatments. Seasonal average CP content ranged from 18.99% to 22.99%. A significant linear relationship was found between yield and ETc or irrigation amount, and the fitting results varied between growth periods and years. The present results also implied that winter irrigation provided the space for saving water and should be applied at the end of each growing season to fill the soil profile, and to maintain a greater yield in the next growing season. During the growing season, more irrigation should be concentrated in the early growth period, especially in the second growth period.

show abstract

Section: Water Use Efficiencymentioning

confidence: 53%

Alfalfa Water Use and Yield under Different Sprinkler Irrigation Regimes in North Arid Regions of China

2017

Sustainability

View full text Add to dashboard Cite

show abstract

“…Physical and chemical soil characteristics may explain this variability, as the lowest annual value corresponded to the site with coarser texture and lower fertility (Site 4) compared to sites with the highest WUE (Sites 1 and 2; Table 1). Additionally, WUE spatial variability may be due to differences in vapor pressure deficit (VPD) among sites (Collino et al, 2005), since increasing the leafto-air water VPD results in stomatal closure (Schulze and Hall, 1982;El-Sharkawy, Cock and Held, 1984). No differences were found in WUE between seasons at Sites 1, 3 and 4 ( Figure 6).…”

Section: Resultsmentioning

confidence: 84%

“…Seasonal variability of lucerne production was positively associated with intercepted radiation (Collino, Dardanelli, De Luca and Racca, 2005;Brown, Moot and Teixeira, 2006;Mattera, Romero, Cuatrín, Cornaglia and Grimoldi, 2013). Positive relationships between lucerne growth and evapotranspiration have been reported (Saeed and ElNadi, 1997;Singh et al, 2007), although these relationships are generally site and cultivar specific.…”

Section: Introductionmentioning

confidence: 97%

Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient

Druille¹,

Deregibus²,

Garbulsky³

2017

AgriS

View full text Add to dashboard Cite

summaryLucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and temporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly explained by variations in annual rainfall and WUE among sites. Seasonal growth depended on incident radiation and actual evapotranspiration. Interannual variability of lucerne growth was explained by precipitation occurred during the growing season in the driest sites, on sandy soils with less water retention capacity. Knowing the sources of variability of lucerne growth, would allow developing more efficient livestock management due to less uncertainty on the forage production dynamics.Key words: soil properties, water use efficiency, forage production, climate.Druille, M., Deregibus V. y Garbulsky, M. F. , 2017. Controles ambientales del crecimiento de alfalfa (Medicago sativa L.) a lo largo de un gradiente climático y edáfico. Agriscientia 34 (II): 13-23 resumen La alfalfa es una de las especies forrajeras más valoradas por su alta productividad y características nutritivas. Sin embargo, el conocimiento de la variabilidad espacio-temporal y los controles ambientales del crecimiento generado a partir del estudio simultáneo de varios sitios y años es extremadamente escaso. En este trabajo se analizaron cinco años de datos de biomasa de cuatro sitios de secano ubicados a lo largo de un gradiente climático y edáfico en Argentina. Los objetivos propuestos fueron: caracterizar el crecimiento anual y estacional de la alfalfa, analizar los controles ambientales del crecimiento a escala espacial y temporal y comparar la eficiencia en el uso del agua (EUA) entre sitios. El crecimiento anual difirió espacialmente, oscilando entre 7.514 y 14.262 kg MS/ha. Esta variabilidad fue principalmente explicada por variaciones en las precipitaciones anuales y la EUA. El crecimiento estacional dependió de la radiación incidente y la evapotranspiración real. La variabilidad interanual del crecimiento fue explicada por la precipitación ocurrida durante la estación de crecimiento en los sitios secos, con suelos arenosos de baja capacidad de retención hídrica. Conocer las fuentes de variación en el crecimiento de alfalfa permitirá el desarrollo de prácticas de manejo ganadero más eficientes debido a la menor incertidumbre en la dinámica de producción forrajera.Palabras clave: propiedades edáficas, eficiencia en el uso del agua, producción de forraje, clima.

show abstract

“…Collino et al (2005) reported WA values between 12.0 and 15.0 t ha −1 MJ −1 m −2 for field grown alfalfa in Argentina and Whitfield et al (1986) reported a WA value of 17.2 t ha −1 MJ −1 m −2 . Confalonieri and Bechini (2004) used 30.0 for a WA value after calibrating CropSyst for use in northern Italy.…”

Section: Estimates and Reasonablenessmentioning

confidence: 99%

Calibration of a crop model to irrigated water use using a genetic algorithm

Bulatewicz

Jin

Staggenborg

et al. 2009

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Near-term consumption of groundwater for irrigated agriculture in the High Plains Aquifer supports a dynamic bio-socio-economic system, all parts of which will be impacted by a future transition to sustainable usage that matches natural recharge rates. Plants are the foundation of this system and so generic plant models suitable for coupling to representations of other component processes (hydrologic, economic, etc.) are key elements of needed stakeholder decision support systems. This study explores utilization of the Environmental Policy Integrated Climate (EPIC) model to serve in this role. Calibration required many facilities of a fully deployed decision support system: geo-referenced databases of crop (corn, sorghum, alfalfa, and soybean), soil, weather, and water-use data (4931 well-years), interfacing heterogeneous software components, and massively parallel processing (3.8×10 9 model runs). Bootstrap probability distributions for ten model parameters were obtained for each crop by entropy maximization via the genetic algorithm. The relative errors in yield and water estimates based on the parameters are analyzed by crop, the level of aggregation (county-or well-level), and the degree of independence between the data set used for estimation and the data being predicted.

show abstract

Temperature and water availability effects on radiation and water use efficiencies in alfalfa (Medicago sativa L.)

Cited by 29 publications

References 23 publications

Alfalfa Water Use and Yield under Different Sprinkler Irrigation Regimes in North Arid Regions of China

Alfalfa Water Use and Yield under Different Sprinkler Irrigation Regimes in North Arid Regions of China

Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient

Calibration of a crop model to irrigated water use using a genetic algorithm

Contact Info

Product

Resources

About