Energy balance and evapotranspiration of melon grown with plastic mulch in the Brazilian semiarid region

Abstract

Methods for obtaining evapotranspiration based on energy balance are potentially interesting for analyzing the impact of crop management practices on energy fluxes and, thus, the loss of water from the plant surface. Among the methods for estimating ET based on energy balance, the Bowen Ratio Energy Balance (BREB) has been well evaluated and is recommended by several authors for different crops (Irmak, et al., 2013;Hou et al., 2010;Zhang et al., 2010;Zeggaf et al., 2008).This study applied the BREB method to determine the crop coefficients of irrigated melon grown with plastic mulch and agrotextiles in the region of Mossoró, state of Rio Grande do Norte, Brazil, to provide more locally appropriate information to irrigators to maintain high yields with more efficient use of water. Materials and Methods Characteristics of the experimental site and crop practicesTwo field experiments were conducted in a melonproducing field in the municipality of Mossoró, in the

Energy balance partitioning and evapotranspiration from irrigated Muskmelon under Semi-Arid Conditions

“…The agreement between the λE/Rn and LAI curves were also observed in cotton crops at oasis Shihezi in northern Xinjing, China (Zhou et al 2012). Compared with other studies in muskmelon crop, such as Borges et al (2015), Mossoró region, Brazilian Semi-Arid, it appears that the portions of Rn converted into λE found in this study were lower. Borges et al (2015) reported that during Mid-season λE values corresponding to almost all available energy, reaching values higher than net radiation during the daytime.…”

“…Compared with other studies in muskmelon crop, such as Borges et al (2015), Mossoró region, Brazilian Semi-Arid, it appears that the portions of Rn converted into λE found in this study were lower. Borges et al (2015) reported that during Mid-season λE values corresponding to almost all available energy, reaching values higher than net radiation during the daytime. During late season Borges et al (2015) found λE values ranging from 77 to 89% of the available energy (Rn), while those found in this study ranged from 62 to 71%.…”

“…Borges et al (2015) reported that during Mid-season λE values corresponding to almost all available energy, reaching values higher than net radiation during the daytime. During late season Borges et al (2015) found λE values ranging from 77 to 89% of the available energy (Rn), while those found in this study ranged from 62 to 71%. The values of λE/Rn about 70% during mid-season are within range reported in literature for irrigated crops.…”

“…The mean values of G/Rn values observed during two cycles in each area were 11%, ranging from 8% (Midseason) to 17% (Initial season). Borges et al (2015), studying the muskmelon crop under irrigated conditions, reported that the portion of Rn converted in to G ranged from 20% (Initial season) to less than 10% (Mid-season), whose average was 14%.…”

Individual variability in morphometry and emergence of seeds of Combretum leprosum

“…All sites were characterized as being hyperxerophilic savanna with strong human pressure, so antropic degradation was common to all plants habitats. According to Koppen, the climate classification of the region is BSwh (very hot and dry, with rainfall in the summer and early autumn), with an average temperature of 27.2 °C, total annual rainfall of 766 mm and average relative humidity of 69 % (BORGES et al, 2015). Fruits were collected when they were fully ripened on the plant.…”