Supplementary lighting of specific wavelengths can be used for inducing morphological and physiological responses in different crops, ultimately improving yield quality. Based on this approach, new greenhouse covering materials are being developed order to improve the use sunlight horticulture. These new-generation coverings may incorporate light spectrum modulation agents or fluorescent additi...

Photochemical reactions with the participation of iron(iii) carboxylates are important for environmental photochemistry and have a great potential of application in water purification (advanced oxidation processes, photo-Fenton and Fenton-like processes). In spite of this, information about excited states and primary intermediates in the photochemistry of Fe(iii) complexes with carboxylic acids...

The photosensitivity of metal carbonyls has been known almost as long as the class of coordination compounds itself. Among no other group of inorganic compounds may one find so many light-sensitive materials. Hence photochemical reactions of metal carbonyls have found wide applications for synthetic purposes. However, whereas much research has been done to understand the thermal reactions," the...

Temperature dependencies of stem dark respiration (R(d)) and light-driven bark photosynthesis (A(max)) of two temperate tree species (Fagus sylvatica and Betula pendula) were investigated to estimate their probable influence on stem carbon balance. Stem R(d) was found to increase exponentially with increasing temperatures, whereas A(max) levelled off or decreased at the highest temperatures cho...

Aquaponics is a promising cultivation technique for combined production of crops and fish, on the condition tackling certain nutrients deficiencies. The aim present study was to examine limitations imposed by system spinach (Spinacia oleracea) growth functional performance identify minimum nutrient supplementation their optimization. Spinach co-cultivated with red tilapia under three treatments...

Femtosecond absorption spectroscopy of Photosystem I (PS I) complexes from the cyanobacterium Synechocystis sp. PCC 6803 was carried out on three pairs complementary amino acid substitutions located near second pair chlorophyll molecules Chl2A and Chl2B (also termed A-1A A-1B). The dynamics at delays 0.1–500 ps were analyzed by decomposition into discrete decay-associated spectra continuously d...

Supplemental artificial light in greenhouses is fundamental to achieving sustainable crop production with high yield and quality. This study’s purpose was investigate the efficacy of supplemental (SL) sources on vegetative reproductive growth cherry tomatoes. Four types were applied, including high-pressure sodium lamps (HPS), a narrow-spectrum LED (NSL), two specific full-spectrum lights (SFL1...

in this study, the susceptibility of twenty-nine tomato varieties to broomrape infection under glasshouse conditions was investigated. results showed that differences in susceptibility to infection were significant among tomato varieties. significant differences were in number and time of broomrape shoots emerging, broomrape dry weigh (shoots and tubercles) and growth and fruit yield of tomato....