Non-destructive assessment of plant nitrogen (N) status is essential for efficient crop production and N management in intensive rice (Oryza sativa L.) cropping systems. Chlorophyll meter (SPAD-502) has been widely used as a rapid, non-destructive and cost-effective diagnostic tool for in-season assessment of crop N status. The present study was intended to establish the quantitative relationsh...

Heat stress is a major production constraint of wheat in South Asia, particularly the Gangetic plains India and Bangladesh. The leaf chlorophyll status key determinant for high rate photosynthesis under stress. present experiments included 238 genotypes 2016-2017 321 2017-2018 optimum heat conditions. Subsequently, set 100 selected on basis susceptibility index was evaluated 2018-2019 condition...

Late blight caused by Phytophthora infestans is a destructive disease in potato production, which can lead to crop failure severe cases. This study combined visible/near-infrared (Vis/NIR) spectroscopy with machine learning (ML) and chemometric methods for rapid detection of late blight. The determination severity was accomplished two directly or indirectly based on differences reflectance. One...

The progress in silicon planar device technologies has led single-photon avalanche diodes (SPAD) to emerge from the laboratory research phase and be commercially available from various manufactures. QKD systems can already exploit the available planar Si-SPAD devices, but they set strong demand for improved features and performance. A response can be given by new developments in a dedicated sil...

Iron (Fe) is a pivotal nutrient taking roles in respiration, photosynthesis and many plant metabolisms. Chlorosis caused by Fe deficiency generally occurs high pH environments fruit trees including peach are known sensitive to iron starvation. starvation declines leaf chlorophyll carotenoid contents, supresses growth photosynthetic capacity. induces responses plants different stomatal behaviors...

The analyses of online quality measurements four lettuce cultivars (Rex, Tacitus, Black Seeded Simpson, Flandria) using hyperspectral image processing techniques have been studied. Seedlings were planted in Rockwool cubes and fed for 3 weeks hydroponic nutrient solution containing 0, 50, 100, 150, 200, 250, 300 ppm nitrogen. images the freshly cut leaves captured camera wavelength range 400–1,0...

Most of the works about single-photon detectors rely on Single Photon Avalanche Diodes (SPADs) designed with dedicated technological processes in order to achieve single-photon sensitivity and excellent timing resolution. Instead, this paper focuses on the implementation of high-performance SPADs detectors manufactured in a standard 0.35-micron opto-CMOS technology provided by AMS. We propose a...

SpaD is the predicted backbone-pilin subunit of the SpaFED pilus, whose loci are encoded by the fimbrial spaFED operon in Lactobacillus rhamnosus GG, a Gram-positive gut-adapted commensal strain with perceived probiotic benefits. In this study, soluble recombinant SpaD protein was overproduced in Escherichia coli and then purified by Ni2+-chelating affinity and gel-filtration chromatography. Af...