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spring; spring barley; spring wheat, etc ; Brassica napus; Hordeum vulgare; Triticum aestivum; canola; conventional tillage; environment; fallow; field experimentation; income; reduced tillage; winter wheat; Show all 14 Subjects
Abstract:
... Some producers in the inland Pacific Northwest (PNW) are interested in diversifying the traditional 2-yr sequence of winter wheat (Triticum aestivum L.) (WW)–summer fallow (SF) with oilseed crops to capture break crop effects. The objective of this study was to compare production costs and economic returns of 2-yr sequences with those of intensified 3-yr sequences at a low-precipitation (<300 mm) ...
spring; spring barley; spring wheat, etc ; Trifolium repens; agrochemicals; agroecosystems; beta-fructofuranosidase; caraway; field experimentation; organic carbon; peas; potassium; soil conservation; total nitrogen; urease; Lithuania; Show all 16 Subjects
Abstract:
... Multi-cropping systems play an important role in improving the quality of soil properties. A field experiment was carried at the Experimental Station of Vytautas Magnus University Agriculture Academy (Lithuania) in 2017 to 2019. The aim of the study was to compare agrophysical and biological properties of the soil in the multi-cropping systems of sole (spring barley, spring wheat, pea, caraway), b ...
spring; spring wheat, etc ; Parastagonospora nodorum; Russia; Septoria; adults; biomass; gene pool; juveniles; leaf blotch; ontogeny; pathogens; China; Show all 13 Subjects
Abstract:
... In the conditions of Kirov region (2017-2021), 67 varieties of spring soft wheat were studied according to the degree of resistance to Septoria leaf blotch in the field against the background of the natural development of infection. Under laboratory conditions, the reaction of these wheat varieties to the pathogen was evaluated at the beginning of plant ontogenesis (juvenile resistance) in two exp ...
spring; spring wheat, etc ; Russia; alleles; cultivars; heading; hybridization; latitude; plant height; protein content; seedlings; solar radiation; spikelets; Show all 13 Subjects
Abstract:
... Varieties of spring bread wheat with the Ppd-D1a allele are insensitive to the photoperiod and are widespread in the world. The overwhelming majority of spring bread wheat cultivars in Russia are sensitive to the length of daylight. Incorporation of the Ppd-D1a allele in Russian cultivars of spring soft wheat will make it possible to accelerate breeding, using one to two additional vegetations per ...
spring, etc ; atmospheric precipitation; autumn; drought; evapotranspiration; Show all 5 Subjects
Abstract:
... Drought is a significant challenge to semiarid Mediterranean grasslands, Increasing the accuracy of monitoring allows improving the conservation and management of these vital ecosystems. Meteorological drought is commonly monitored by the Standard Precipitation Index (SPI) or the Standard Precipitation Evapotranspiration Index (SPEI). On the other hand, agriculture drought is estimated by the Vege ...
spring, etc ; Elateridae; elytra; energy; muscles; thorax; Show all 6 Subjects
Abstract:
... We investigated and described the thoracic structures, jumping mechanism, and promesothoracic interlocking mechanism of the click beetle Campsosternus auratus (Drury) (Elateridae: Dendrometrinae). Two experiments were conducted to reveal the critical muscles and sclerites involved in the jumping mechanism. They showed that M2 and M4 are essential clicking-related muscles. The prosternal process, t ...
spring, etc ; electricity; energy conversion; water power; Show all 4 Subjects
Abstract:
... In this work, a mechanical power take-off system (PTO) is proposed to be installed in a small-scale wave energy converter (WEC) to transfer wave power to electricity. Two pairs of one-way bearings are respectively embedded into two transmission chains to transfer bidirectional oscillation of the primary mover to unidirectional rotation of the generator. In addition to a flywheel mounted on the out ...
spring, etc ; Acer; diffusivity; magnetism; sap; sucrose; Show all 6 Subjects
Abstract:
... The natural variation of sucrose concentration in maple tree sap is investigated using time-domain magnetic resonance (MR). The current study, which includes a concise introduction to the relevant MR properties, is a demonstration of principle showing how the relaxation time constant T₂ and the self-diffusion coefficient relate to the amount of sucrose and ionic content present in the collected sa ...
spring, etc ; climatology; data collection; summer; China; Show all 5 Subjects
Abstract:
... By using the gridded 0.25° × 0.25° observation dataset of CN05.1 provided by the China Meteorological Administration, this study investigates the variations in nine extreme precipitation indices over the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) in China from 1961 to 2018. Based on trends and interannual variations, the nine kinds of extreme precipitation are classified into four categories ...
spring; spring wheat, etc ; Zea mays; biomass; corn; drought; evapotranspiration; leaf area index; regression analysis; soil water deficit; water management; Show all 11 Subjects
Abstract:
... Drought is a natural hazard that may decrease agricultural production. To investigate crop growth and yield responses to drought conditions are vital for drought prevention during crop growth periods. This study aims to analyze the impacts of meteorological and agricultural droughts on wheat/maize yields from multiple perspectives and to select the key parameters which describe the best relationsh ...
spring; spring barley, etc ; Ephemera; Hordeum vulgare; Siberia; acreage; basins; cabbage; forest steppe; nutritive value; research; rhizomes; species diversity; statistics; weather; Show all 15 Subjects
Abstract:
... Barley belongs to the leading grain crops. This is due to its good adaptive abilities to various climatic conditions, as well as its high nutritional and feed value. However, this crop, when developed in the field, is forced to compete with weeds, which inevitably leads to a decrease in yield. The relationship between clogging, weather and climatic conditions and crop yields has been observed. How ...
spring, etc ; Diplotaxis tenuifolia; greenhouses; nitrates; nitrogen; yields; Show all 6 Subjects
Abstract:
... The quantity and quality of wall rocket (Diplotaxis tenuifolia L.) production are strongly influenced by the cultivation system, in particular the protected environment conditions and nitrogen fertilization. In the present research, we tested two greenhouse cover films (Film1: diffuse light; Film2: clear), to verify the effects on yield and nitrate content (a detrimental factor of quality) of rock ...
spring, etc ; ambient temperature; crosslinking; hydrogen; polymerization; polymers; Show all 6 Subjects
Abstract:
... Azobenzene (azo) polymer photoactuators with full room-temperature reprogrammability, reprocessability, and photomobility are highly desirable for large-scale applications, but their development remains a daunting challenge. Herein, a strategy is first presented for fabricating such advanced photoactuators from a high-molecular-weight main-chain azo crystalline poly(ester-amide) (PEA) prepared via ...
spring wheat, etc ; genomics; phenotype; prediction; selection intensity; Show all 5 Subjects
Abstract:
... KEY MESSAGE: Sparse testing using genomic prediction can be efficiently used to increase the number of testing environments while maintaining selection intensity in the early yield testing stage without increasing the breeding budget. Sparse testing using genomic prediction enables expanded use of selection environments in early-stage yield testing without increasing phenotyping cost. We evaluated ...
spring, etc ; climatology; wind direction; wind speed; China; Show all 5 Subjects
Abstract:
... This study mainly presents the spatiotemporal characteristics and changes of near-surface wind speed with observations from 679 stations over China for 1979–2019. Furthermore, mechanisms of the wind speed changes are also investigated. Major results show that the larger near-surface wind speed mainly occur in northern and eastern regions, Tibetan Plateau and the coastal zones in China. The wind sp ...
spring, etc ; Achilles tendon; kinematics; mechanical properties; muscles; ultrasonics; Show all 6 Subjects
Abstract:
... Walking at speeds higher than transition speed is associated with a decrease in the plantar-flexor muscle fibres’ ability to produce force and, potentially, to an impaired behaviour of the muscle–tendon unit (MTU) elastic components. This study aimed to investigate the ankle joint functional indexes and the Achilles tendon mechanical behaviour (changes in AT force and power) to better elucidate th ...
spring, etc ; lightning; research; satellites; summer; warm season; Brazil; Show all 7 Subjects
Abstract:
... Brazil is one of the regions in the world where lightning most occurs. With the launch of the Geostationary Environmental Operational Satellite – 16 (GOES-16), it was possible, for the first time, to carry out an almost uniform resolution mapping, in near real time, of total lightning with a field of view that covers most of the western hemisphere. The objective of this study was to evaluate the i ...
spring wheat, etc ; biomass; crop yield; dynamic models; vegetation; Show all 5 Subjects
Abstract:
... The purpose of this work is to present a new method for estimating the parameters of the biomass of agricultural crops based on Earth remote sensing (ERS) data. The method includes mathematical models and algorithms estimation and has been tested on the example of spring wheat sowing. Sowing biomass parameters are the basis for making management decisions aimed at obtaining a given crop yield. Cur ...
spring, etc ; climate change; cold; databases; temperature; South America; Show all 6 Subjects
Abstract:
... The consequences of climate change are particularly noticeable through extreme events, which have already changed in intensity and frequency worldwide. This study aims to evaluate the ability of 33 CMIP6 models to simulate the observed trends of four extreme temperature indices in South America during the period 1979–2014. We use daily minimum and maximum temperatures from an observational databas ...
spring, etc ; drought; environment; humans; hydrology; watersheds; winter; China; Show all 8 Subjects
Abstract:
... Understanding the relationship among different types of drought is crucial for drought mitigation and early warnings. Much attention has been recently focused on the propagation from meteorological drought (MD) to hydrological drought (HD); however, the influences of human activities on drought propagation have rarely been explored. The novelty of the study was to propose an effective framework to ...