{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T06:19:36Z","timestamp":1768976376136,"version":"3.49.0"},"reference-count":54,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2022,12,4]],"date-time":"2022-12-04T00:00:00Z","timestamp":1670112000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Pistachio is an important economic crop in arid and semi-arid regions of Iran. A major problem leading to a reduction in crop quality and reduced marketability is extreme air temperature in summer, which causes sunburn of pistachio leaves and fruit. A solution proposed to deal with the negative effects of high temperatures and increase water consumption efficiency in pistachio orchards is use of light-reflecting compounds. This study investigated the effect of foliar application of gypsum, sulfur, and NAX-95 (calcium-based suspension coating) to trees in a pistachio orchard (150 ha) in central Iran. The effect of these foliar products is assessed at plot scale, using control plots sprayed with calcium sulfate, based on temperature and evapotranspiration changes analyzed through remote sensing. Landsat 8 sensor images and RGB images collected by UAVs (spatial resolution of 30 m and 20 cm, respectively), on the same dates, before and after foliar spray application, were merged using the PCA method and bilinear interpolation re-sampling. Land surface temperature (LST) was then estimated using the split-window algorithm, and daily evapotranspiration using the surface energy balance algorithm for land (SEBAL) algorithm. A land use map was prepared and used to isolate pistachio trees in the field and assess weed cover, whose effect was not accounted. The results showed that temperature remained constant in the control plot between the spraying dates, indicating no environmental changes. In the main plots, gypsum had the greatest effect in reducing the temperature of pistachio trees. The plots with foliar spraying with gypsum displayed a mean tree temperature (47\u201348 \u00b0C) decrease of 3.3 \u00b0C in comparison with the control plots (&gt;49 \u00b0C), leading to an average decline in evapotranspiration of 0.18 mm\/day. NAX-95 and sulfur reduced tree temperature by on average 1.3 \u00b0C and 0.6 \u00b0C, respectively. Thus, gypsum is the most suitable foliar-spraying compound to lower the temperature of pistachio trees, reduce the water requirement, and increase crop productivity.<\/jats:p>","DOI":"10.3390\/rs14236153","type":"journal-article","created":{"date-parts":[[2022,12,5]],"date-time":"2022-12-05T05:31:32Z","timestamp":1670218292000},"page":"6153","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Use of Landsat 8 and UAV Images to Assess Changes in Temperature and Evapotranspiration by Economic Trees following Foliar Spraying with Light-Reflecting Compounds"],"prefix":"10.3390","volume":"14","author":[{"given":"Fahime Arabi","family":"Aliabad","sequence":"first","affiliation":[{"name":"Department of Arid Lands Management, Faculty of Natural Resources and Desert Studies, Yazd University, Yazd 8915818411, Iran"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5260-1161","authenticated-orcid":false,"given":"Saeed","family":"Shojaei","sequence":"additional","affiliation":[{"name":"Department of Arid and Mountainous Region Reclamation, Faculty of Natural Resources, University of Tehran, Tehran 1417935840, Iran"}]},{"given":"Morad","family":"Mortaz","sequence":"additional","affiliation":[{"name":"Department of Plant Sciences, University of California Davis, Davis, CA 95616, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3709-4103","authenticated-orcid":false,"given":"Carla Sofia Santos","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Department of Physical Geography and Bolin Center for Climate Research, Stockholm University, 10691 Stockholm, Sweden"},{"name":"Research Centre for Natural Resources, Environment and Society (CERNAS), Polytechnic Institute of Coimbra, Agrarian School of Coimbra, 3045-601 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7978-0040","authenticated-orcid":false,"given":"Zahra","family":"Kalantari","sequence":"additional","affiliation":[{"name":"Department of Physical Geography and Bolin Center for Climate Research, Stockholm University, 10691 Stockholm, Sweden"},{"name":"Department of Sustainable Development, Environmental Science and Engineering (SEED), KTH Royal Institute of Technology, 11428 Stockholm, Sweden"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.agwat.2017.02.003","article-title":"Long term field response of pistachio to irrigation water salinity","volume":"185","author":"Boukhris","year":"2017","journal-title":"J. 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