This study was conducted to determine the effects of different irrigation water treatments and silicon doses on leaf SPAD meter readings, chlorophyll content carotenoid contents tomato plants. Tybiff Aq seedling were grown in 3-liter pots filled with 1100 g 1:1 peat-perlite mixture for 70 days. Four type waters prepared use sea tap water. Irrigation included I) Full water, II) ½ + III) ¼ ¾ IV) ...

Studying the response of winter wheat to post-drought rehydration is conducive understanding efficient utilization water-saving technology, such as regulating deficit irrigation and increasing water use efficiency. The controlled condition experiment in rain shelter was conducted 2020. two stress treatments, including at jointing heading stages, were combined with high nitrogen (N) (250 kg/hm2)...

Fifty-three leaves were randomly sampled on different deciduous tree species, representing a wide range of chlorophyll contents, tree ages, and leaf structural features. Their reflectance was measured between 400 and 800 nm with a 1-nm step, and their chlorophyll content determined by extraction. A larger simulated database (11,583 spectra) was built using the PROSPECT model, in order to test, ...

The effects of potassium fertilizer (K2SO4) levels K0, (0), K1,(150) and K2,(250 kg/ha) in two species of Brassica napus (Hyola 401 Hybrid) and Brassica juncea (landrace cultivar), under three irrigation regimes, control (irrigation after 50%,), moderate stress, (irrigation after 70%), and severe stress (irrigation after 90% soil water depletion) were studied in a factorial experiment laid out ...

We present a novel method for the robotized probing of plant leaves using Time-of-Flight (ToF) sensors. Plant images are segmented into surface patches by combining a segmentation of the infrared intensity image, provided by the ToF camera, with quadratic surface fitting using ToF depth data. Leaf models are fitted to the boundaries of the segments and used to determine probing points and to ev...

Yttrium doping-stabilized γ-Fe2O3 nanoparticles were studied for its potential to serve as a plant fertilizer and, through enzymatic activity, support drought stress management. Levels of both hydrogen peroxide and lipid peroxidation, after drought, were reduced when γ-Fe2O3 nanoparticles were delivered by irrigation in a nutrient solution to Brassica napus plants grown in soil. Hydrogen peroxi...

Hydroponic experiment was conducted to investigate the sole and combined effects of cadmium and salinity on growth and photosynthesis of Brassica napus (cultivar Abasin) and Brassica juncea (cultivar NIFA-Raya). Cadmium (as CdCl2; 3 and 6 μmol L) and NaCl (100 and 200 mM) were added either alone or in combination in Hoagland solution along with non-treated controls. Cd and NaCl treatments impos...