Estimatation of evapotranspiration and crop coefficient of melon cultivated in protected environment

Lozano, Cláudia Salim; Rezende, Roberto; Freitas, Paulo Sérgio Lourenço de; Hachmann, Tiago Luan; Santos, Fernando André Silva; Andrean, André Felipe Barion Alves

doi:10.1590/1807-1929/agriambi.v21n11p758-762

Cited by 14 publications

(7 citation statements)

References 11 publications

(10 reference statements)

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“…Measured mean daily ET rates of the studied melon crop (2.4 mm/day) were in agreement with previous values reported for melons growing under dry‐climate irrigated experimental conditions with plastic mulched soils (2.1 mm/day; Teófilo et al, ), as well as for melons produced under experimental greenhouse conditions in Brazil (2.2 to 3.1 mm/day; Lozano et al, ; Monteiro et al, ). Reported values of common daily ET rates for irrigated paddy rice fields under tropical wet season conditions (4–5 mm/day; Steduto et al, ) also matched our measurements of upland rice maximum daily ET rates (~5.5 mm/day), which were measured following heavy rain events resulted in high soil moisture (near saturation) and water ponding on the clayey soil.…”

Section: Resultssupporting

confidence: 90%

Water Use Dynamics in Double Cropping of Rainfed Upland Rice and Irrigated Melons Produced Under Drought‐Prone Tropical Conditions

Morillas

Hund

Johnson

2019

Water Resources Research

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Agricultural expansion and intensification is occurring in seasonally dry regions of Central America, while droughts are intensifying due to increasing water demand and climatic change. Empirical measurements of water consumption of major crops in this region are scarce but crucial to assess agricultural water use dynamics in the light of increasing regional water conflicts. We empirically quantify total crop water use (CWU) and water footprints (WFs) of rainfed upland rice (wet season) and groundwater‐irrigated melons (dry season) grown sequentially as a double cropping system, one of the major cropping systems in the seasonally dry province of Guanacaste in northwestern Costa Rica. Data for this study cover 2 years and were measured with a state‐of‐the‐art eddy covariance water and carbon flux station. Upland rice only consumed green water (CWUgreen = 383 L/m2), while melons only consumed blue water (CWUblue = 177 L/m2). Irrigation was found to be 1.5 times larger than the actual melon water consumption, with better irrigation efficiencies than reported for melon farms in Brazil but slightly inferior to farms in Spain. Melon WFblue was 79 m3/t, a much lower value than global and regional estimates reported but similar to values reported for melons produced in Brazil or Spain. Upland rice WFgreen (681 m3/t) was reported for the first time and was proven to be much lower than flood irrigated‐rice WFblue‐green. Our results demonstrated lower overall water demand for upland rice‐melon double crop compared to the two other major monocultures of the region (flood‐irrigated rice and irrigated sugar cane).

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Section: Resultssupporting

confidence: 90%

Water Use Dynamics in Double Cropping of Rainfed Upland Rice and Irrigated Melons Produced Under Drought‐Prone Tropical Conditions

Morillas

Hund

Johnson

2019

Water Resources Research

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“…(1) accumulated water demand of the yellow ipe seedlings under 80% shading when compared with seedlings under full sun. The intensity of the solar radiation incident on the plants is proportionally related to the variation of the evapotranspiration of a vegetated surface (Lozano et al, 2017), since the increase of global radiation, depending on the radiation balance, can be accompanied by higher availability of latent heat and sensible heat, consequently increasing the ETc.…”

Section: Resultsmentioning

confidence: 99%

“…Defining the response factors of the crop to water deficit (ky) allows indicating in which period of the plant life cycle (phenological stage) there is greater sensitivity to water stress (Doorenbos & Kassam, 1979). Therefore, ky constitutes an important tool for rational water management in forest nurseries, because there are no changes in the phenological stages in the seedlings (only vegetative stage), thus allowing the optimization of water use according to the requirements of each species (Silva et al, 2014;Santos et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evapotranspiration and water sensitivity of Amazonian yellow ipe seedlings under different shading conditions

Keffer

Silva

Souza

et al. 2019

Rev. bras. eng. agríc. ambient.

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The scarcity of information on the agroclimatic and ecophysiological requirements of forest species, especially in the initial phase, limits the production of quality seedlings, the planning and optimization of nurseries. The potential evapotranspiration, crop coefficients (kc) and water sensitivity coefficients (ky) of Amazonian yellow ipe seedlings were determined under different shading conditions and levels of water replacement to the substrate, in the dry period (July to October 2016), in the Cerrado-Amazon Rainforest transition region of the Mato Grosso state, Brazil. The experiment evaluated the full sun and black polyester nets with 35, 50, 65 and 80% shading, and the levels of water replacement to the substrate of 25, 50, 75 and 100% ETc in a split-plot scheme, with irrigation fractions established according to the maximum water retention capacity of the substrate. The water consumption of Amazonian yellow ipe was 239.2, 228.6, 204.1, 185.7 and 136.3 mm for cultivation under full sun and shading levels of 35, 50, 65 and 80%, respectively. The daily means of ETc were 3.37, 3.22, 2.87, 2.61 and 1.92 mm d-1, whereas the kc means were 1.13, 1.15, 1.05, 0.90 and 0.60 for the above-mentioned shading levels. ky values ranged from 0.89 to 1.28, with reduction due to the increase of water replacement and increase for higher shading percentage.

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“…There are in the literature some cultures of which the phenological phases have already been transcribed, for crops as sunflower (Cavalacante Junior et al, 2013), heliconia (Felisberto et al, 2015), melon (Lozano et al, 2017) and pepper (Lorenzoni et al, 2019). The crop coefficient is specific to each cultivar, varying according to the study location the conditions to which the crop was exposed.…”

Section: Crop Coefficient For Cut Gerberamentioning

confidence: 99%

Crop coefficient of cut gerbera with water supplementation in a protected environment

Piroli

Peiter

Robaina

et al. 2020

Agraria

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The determination of the crop coefficient (Kc) is vital since, although gerbera cultivation is constantly expanding, there is little research on the evapotranspiration of the crop cultivated under a protected environment to obtain the correct irrigation management. The objective of this work was to evaluate the evapotranspiration and crop coefficients of cut gerbera, cultivated in protected environment. The reference evapotranspiration (ETo) and crop evapotranspiration (ETc) were obtained through the Penman and weighing lysimetry methods, respectively. The experimental design used was completely randomized, consisting of five irrigation treatments (120, 100, 80, 60, and 40% of the water retention capacity), with ten replicates each, totalizing 50 experimental units. The Kc was evaluated using the irrigation lamina that presented the highest production of floral stems among the tested treatments, obtained through the relation between ETc and ETo. The mean of the crop coefficient ranged from 0.72 in vegetative period I, 0.81 in vegetative period II, 0.85 in flowering I, 0.89 in full flowering II, 1.33 in full flowering III, and 1.06 in end of the flowering I. The water consumption for the cut gerbera crop in the treatments with water availability ranged from 225.87 to 523.58 mm. Therefore, the crop coefficients proposed for the different phenological stages of the gerbera were efficient for irrigation management.

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Estimatation of evapotranspiration and crop coefficient of melon cultivated in protected environment

Cited by 14 publications

References 11 publications

Water Use Dynamics in Double Cropping of Rainfed Upland Rice and Irrigated Melons Produced Under Drought‐Prone Tropical Conditions

Water Use Dynamics in Double Cropping of Rainfed Upland Rice and Irrigated Melons Produced Under Drought‐Prone Tropical Conditions

Evapotranspiration and water sensitivity of Amazonian yellow ipe seedlings under different shading conditions

Crop coefficient of cut gerbera with water supplementation in a protected environment

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