Determining FAO-56 crop coefficients for peanut under different water stress levels

Suleiman, Ayman; Soler, Cecilia M. Tojo; Hoogenboom, Gerrit

doi:10.1007/s00271-011-0301-5

Cited by 12 publications

(10 citation statements)

References 28 publications

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“…The calculated ET a values were compared with the estimates of ET a obtained by soil water balance (Poulovassilis et al , ; Suleiman et al , ). A relatively simple relation expressed the soil water balance (Rana and Katerji, ):

((), P + I) - normalR normalO - {normalE normalT}_{a} - normalD normalP \pm Δ normalS normalW = 0

where P was the precipitation, I was the irrigation depth, RO was the run‐off from the soil surface, the deep percolation was DP and ΔSW was the difference in soil water storage between two successive measurements (SW i − SW i −1 ).…”

Section: Methodsmentioning

confidence: 99%

“…The first criterion was necessary to eliminate the days with water loss due to deep percolation (DP = 0). As the terrain inclination was <5% and P < 2 mm, the run‐off was also considered to be zero (RO = 0) (Zhao et al , ; Suleiman et al , ).…”

Section: Methodsmentioning

confidence: 99%

“…The deficit in ET c due to available soil water is numerically expressed by the soil water stress co‐efficient (K s ), with values ranging from 0 to 1 (Allen et al , ; Kang et al , ; Ferreira et al , ; Suleiman et al , ). Several methods are used to estimate K s , including those that use linear, cosine, logarithmic or exponential functions of the soil water content (Poulovassilis et al , ) or its matric potential (Allen et al , ; Ferreira et al , ) to express the effect in ETc.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soil water stress co‐efficient for estimating actual evapotranspiration of maize in northeastern Brazil

Lyra

Souza

Silva

et al. 2016

Meteorological Applications

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Several of the methods used to estimate actual evapotranspiration (ET a ) consider the crop evapotranspiration (ET c ) to be affected by a soil water stress co-efficient (K s ) such that ET a = K s ET c . The aim of this study was to assess the ET a estimation in maize in Alagoas State (09 ∘ 38 ′ S and 36 ∘ 40 ′ W; 260 m msl) in northeastern Brazil using the method of the single crop co-efficient from the FAO-56 paper, combined with three different approaches to determine K s . The K s was expressed as either a linear (K s,lin ) or a logarithmic (K s,log ) function of the soil water depletion. Additionally, the method proposed in the FAO-56 (K s,FAO ) was used when the impact was linear, but it was switched on after only one offset. Meteorological and soil water measurements were conducted in a maize crop from July to October 2005. The estimates of ET a were compared with the ET a determined from soil water balance. The ET a estimated with K s,lin had the highest precision (r 2 = 0.67) and accuracy (d = 0.89 and root mean square error (RMSE) = 0.67 mm d −1 ). However, the ET a determined from

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((), P + I) - normalR normalO - {normalE normalT}_{a} - normalD normalP \pm Δ normalS normalW = 0

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil water stress co‐efficient for estimating actual evapotranspiration of maize in northeastern Brazil

Lyra

Souza

Silva

et al. 2016

Meteorological Applications

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“…The period of severe drought treatment covered the critical period of water-deficit stress in peanuts. 27) High leaf malondialdehyde (MDA) content is an index of drought-induced oxidative damage due to suppression of photosynthesis from stomatal closure to prevent water loss, while metabolic regulation of its production close to the basal level is promising for the drought resistance. 5) Although it was not our main point, it was found that the drought resistance in vegetative modes (aerial biomass and/or leaf MDA content; Table 1) did not always promise the seed resistance to A. flavus as previously reported.…”

Section: Discussionmentioning

confidence: 99%

Identification of peanut seed prolamins with an antifungal role by 2D-GE and drought treatment

Senakoon

Nuchadomrong

Chiou

et al. 2015

Bioscience, Biotechnology, and Biochemistry

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This work revealed peanut seed prolamins likely displaying a defensive role besides the known nitrogen storage. Drought stress and proteomic approaches were used in varieties of peanuts to explore the prolamin member in association with a test against Aspergillus flavus spore germination. The stress effect was showed by aerial biomass, leaf content of malondialdehyde, and seed contamination by A. flavus. Sodium dodecyl sulfate–polyacrylamide gel electrophoresis profiles were not informative for the antifungal polypeptides. From two-dimensional gel electrophoresis, the suspected polypeptides were those with pI 5.45–5.75 and sizes of 22.0–30.5 kDa specifically in Spanish-type peanuts. Regarding to the drought effect in most of these peanuts, the spot peak volume analysis deduced three novel prolamin-related antifungal polypeptides at pI 5.75–5.8 with 30.5, 27.5–28.5, and 22.0–22.5 kDa, which was confirmed after isoelectric purification at pH 5.60. The data could not yet conclude their correlation with resistance to drought and to seed infection by A. flavus.

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“…In addition, there is great interest and parallel effort directed toward the development of improved crop coefficients, e.g., [58][59][60]. Regardless of these efforts, it is probable that improvements in ET delivery and crop coefficients will not be sufficient to overcome the limits on ET c -based irrigation management that result from declining water resources.…”

Section: Discussionmentioning

confidence: 99%

Irrigation Analysis Based on Long-Term Weather Data

Mahan

Lascano

2016

Agriculture

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Irrigation management is based upon delivery of water to a crop in the correct amount and time, and the crop's water need is determined by calculating evapotranspiration (ET) using weather data. In 1994, an ET-network was established in the Texas High Plains to manage irrigation on a regional scale. Though producers used the ET-network, by 2010 public access was discontinued. Why did producers allow a valuable irrigation-management tool to be eliminated? Our objective was to analyze the effect of declining well capacities on the usefulness of cotton ET (ET c ) for irrigation. Thirty years of daily ET c data were used to compare irrigation demand vs. irrigation responses at four locations, analyzed for multiple years and range of well capacities for three irrigation-intervals. Results indicated that when well capacities declined to the point that over-irrigation was not possible, the lower well capacities reduced the value of ET c in terms of the number of irrigations and total amount of water applied. At well capacities <1514 L·min −1 the fraction of irrigations for which ET c information was used to determine the irrigation amount was <35% across years and irrigation intervals. The value of an ET c -based irrigation may fall into disuse when irrigation-water supplies decline.

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Determining FAO-56 crop coefficients for peanut under different water stress levels

Cited by 12 publications

References 28 publications

Soil water stress co‐efficient for estimating actual evapotranspiration of maize in northeastern Brazil

Soil water stress co‐efficient for estimating actual evapotranspiration of maize in northeastern Brazil

Identification of peanut seed prolamins with an antifungal role by 2D-GE and drought treatment

Irrigation Analysis Based on Long-Term Weather Data

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