The main stress factors for sweet cherries in the Krasnodar region are: late return frosts and early exposure to frost after a warm autumn. Against background of frosts, death generative organs cherry was 95%, realization productive potential − 3.3%; spring freezing fruit buds 30%, 47.8%. impact autumn, 90%, 5.6%. Under favorable weather conditions, i.e. absence any type stress, yield varieties...

The existence of a differentiation of ligneous and herbaceous plants with respect to the magnitude of the osmotic concentration of the tissue fluids was first demonstrated in a strictly quantitative manner by work.on the sap of the plants of the spring flora of the Arizona deserts 1 in the neighborhood of the Desert Botanical Laboratory, and on the terrestrial vegetation of the Jamaican montane...

Germination in Sugar Beets R. R. WOOD Introduction The development of varieties of sugar beets capable of germination from seed at low temperatures, together with the ability to withstand frost after establishment of the plant in spring and resistance to early freezing damage in fall, now appears to be entirely possible. The apparent advantages of such types in temperate climaxes is fairly obvi...

Radiant frost is a significant production constraint to wheat (Triticum aestivum) and barley (Hordeum vulgare), particularly in regions where spring-habit cereals are grown through winter, maturing in spring. However, damage to winter-habit cereals in reproductive stages is also reported. Crops are particularly susceptible to frost once awns or spikes emerge from the protection of the flag leaf...

Spring temperatures have increased over the past 25 years, to which a wide variety of organisms have responded. The outstanding question is whether these responses match the temperature-induced shift of the selection pressures acting on these organisms. Organisms have evolved response mechanisms that are only adaptive given the existing relationship between the cues organisms use and the select...

A coupling of a physically based model of snowmelt runoff generation with the Monte-Carlo simulation of the model inputs is applied. The model of runoff generation is based on the finiteelement schematization of river basin and includes the description of the following hydrological processes: snow cover formation and snowmelt, freezing and thawing of soil, vertical soil moisture transfer and in...

Forests of northeastern North America have been exposed to anthropogenic acidic inputs for decades, resulting in altered cation relations and disruptions to associated physiological processes in multiple tree species, including sugar maple (Acer saccharum Marsh.). In the current study, the impacts of calcium (Ca) and aluminum (Al) additions on mature sugar maple physiology were evaluated at the...

Freshwater alewives have been shown to be quite sensitive to cold water, and evidence exists to suggest that entire year classes have died in severe winters. Although a number of factors influence alewife survival rates, it is likely that overwinter mortality is substantial in most years. In spite of the apparent importance of overwinter mortality, estimates of overwinter mortality rates for th...

Abstract. In this study, we present atmospheric ice-nucleating particle (INP) concentrations from the Gruvebadet (GVB) observatory in Ny-Ålesund (Svalbard). All aerosol sampling activities were conducted April–August 2018. Ambient INP (nINP) measured for particles collected on filter samples by means of two offline instruments: Dynamic Filter Processing Chamber (DFPC) and West Texas Cryogenic R...