LAI determined from thermal imaging was compared with those measured using instrument. Thermal image based LAI was determined for wheat crop under moisture stress condition. Thermal imaging application of thermal stress pdf determine the temperature of objects by non-contact measurements and give the temperature reading for each pixel of the image.
They work on the same principle as spot pyrometers. Thermal imaging of the crop canopy can give the temperatures of both the crop canopy and the soil directly. However, a better distinction between the two classes, i. The best estimation of LAI was by the support vector machine method, due to its higher overall classification accuracy and the Kappa coefficients. This was further supported by the statistical analysis based on the comparison between the digital image derived LAI and those measured using the plant canopy analyser. The present study clearly showed that thermal image analysis can be applied as a non-destructive, rapid technique to characterise the temperature of crop canopy and then to estimate the LAI of wheat grown under moisture stress conditions.
Check if you have access through your login credentials or your institution. These include thermal stress, drought and flooding, and contamination by persistent organic pollutants. Plants exposed exhibit various physiological and pathological disorders leading to stunted growth and severe loss in fruit quality and yield. One way to avoid or reduce losses in production caused by adverse soil chemical and physical conditions and environmental stresses in vegetables would be to graft them onto rootstocks capable of reducing the effect of external stresses on the shoot. This review gives an actual overview how grafting can alleviate the adverse effects of environmental stresses on vegetable’s crop performance at agronomical, physiological, and biochemical levels.