The possibility of application of quantitative infrared thermography in detection of early water stress in tomatoes

U ovom radu istraživanje je provedeno na presadnicama rajčice (Lycopersicon esculentum Mill.) postavljenih u četiri grupe. Grupe su podijeljene prema planiranim tretmanima pokusa: mikoriza navodnjavano, mikoriza nenavodnjavano, bez mikorize navodnjavano i bez mikorize nenavodnjavano. Temperatura je mjerena pomoću termoparova i infracrvene kamere. Na presadnicama su provedena mjerenja fizikalnih i bioloških svojstava: vodni potencijal lista, klorofil, dušik, fotosinteza. Različite varijante navodnjavanja pokazala su različite učinke na svojstva presadnica i to: mikorizirano navodnjavana varijanta ima najveću masu nadzemnog dijela, lista i stabljike. Najveća temperatura lista je zabilježena kod tretmana pod vodnim stresom. Zaključeno je da temperatura lista presadnica izmjerena infracrvenom kamerom može ocijeniti vodni stres presadnica rajčice.The research in this paper was carried on tomato seedlings (Lycopersicon esculentum Mill.) divided into four groups. Groups were divided according to the planned experiments’ treatment: mycelium irrigated, mycoplasma unirrigated, without mycorrhizae irrigated and without mycorrhizae unirrigated. The temperature was measured by thermocouples and infrared cameras. Measurements of physical and biological properties were carried out on leaflets: water potential of the leaf, chlorophyll, nitrogen, photosynthesis. Different variants of irrigation have shown different effects on the characteristics of the seedlings: the michorized irrigated variant has the largest mass of the overhead particle, leaf and stem. The highest temperature of the leaf was recorded during the treatment under water stress. It is concluded that the leaf temperature of the seedlings measured by an infrared camera can assess the water stress of tomato seedlings