Use of Landsat 8 and UAV Images to Assess Changes in Temperature and Evapotranspiration by Economic Trees following Foliar Spraying with Light-Reflecting Compounds

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Aliabad, Fahime ArabiYazd Univ, Fac Nat Resources & Desert Studies, Dept Arid Lands Management, Yazd 8915818411, Iran. (författare)

Use of Landsat 8 and UAV Images to Assess Changes in Temperature and Evapotranspiration by Economic Trees following Foliar Spraying with Light-Reflecting Compounds

Artikel/kapitelEngelska2022

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2022-12-04
MDPI AG,2022
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LIBRIS-ID:oai:DiVA.org:su-213368
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-213368URI
https://doi.org/10.3390/rs14236153DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-322869URI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:art swepub-publicationtype

Anmärkningar

QC 20230109
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 (47–48 °C) decrease of 3.3 °C in comparison with the control plots (>49 °C), leading to an average decline in evapotranspiration of 0.18 mm/day. NAX-95 and sulfur reduced tree temperature by on average 1.3 °C and 0.6 °C, 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.

Ämnesord och genrebeteckningar

NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries hsv//eng
LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Skogsvetenskap hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Forest Science hsv//eng
foliar spraying
remote sensing
land surface temperature
Landsat 8
pistachio orchard
precision agriculture

Biuppslag (personer, institutioner, konferenser, titlar ...)

Shojaei, SaeedUniv Tehran, Fac Nat Resources, Dept Arid & Mountainous Reg Reclamat, Tehran 1417935840, Iran. (författare)
Mortaz, MoradUniv Calif Davis, Dept Plant Sci, Davis, CA 95616 USA. (författare)
Santos Ferreira, Carla SofiaStockholms universitet,Institutionen för naturgeografi,Bolincentret för klimatforskning (tills m KTH & SMHI),Polytechnic Institute of Coimbra, Portugal,Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden.;Polytech Inst Coimbra, Res Ctr Nat Resources Environm & Soc CERNAS, Agr Sch Coimbra, P-3045601 Coimbra, Portugal.(Swepub:su)cafe8390 (författare)
Kalantari, ZahraKTH,Stockholms universitet,Institutionen för naturgeografi,Bolincentret för klimatforskning (tills m KTH & SMHI),KTH Royal Institute of Technology, Sweden,Vatten- och miljöteknik,Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden.(Swepub:kth)u1dxr4oj (författare)
Yazd Univ, Fac Nat Resources & Desert Studies, Dept Arid Lands Management, Yazd 8915818411, Iran.Univ Tehran, Fac Nat Resources, Dept Arid & Mountainous Reg Reclamat, Tehran 1417935840, Iran. (creator_code:org_t)

Sammanhörande titlar

Ingår i:Remote Sensing: MDPI AG14:232072-4292

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