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Brassica napus; Hordeum vulgare; Vicia sativa; barley; canopy; environment; grasses; leaf area index; legumes; photosynthetically active radiation; soil
Abstract:
... Canopy characterization is essential for describing the interaction of a crop with its environment. The goal of this work was to determine the relationship between leaf area index (LAI) and ground cover (GC) in a grass, a legume and a crucifer crop, and to assess the feasibility of using these relationships as well as LAI-2000 readings to estimate LAI. Twelve plots were sown with either barley (Ho ...
... During seed filling in annual legumes, changes in concentration of assimilates occur simultaneously with plant partitioning, leading to net changes in yield of assimilates derived from the processes of accumulation and redistribution. Field studies were conducted during two growing seasons (1991–1992 and 1992–1993) in central Spain with the objectives of determining models of change for assimilate ...
... Common vetch (Vicia sativa L.) is an annual legume used for hay and grain. Field studies were conducted during two growing seasons (1991–1992 and 1992–1993) in a Mediterranean continental area of central Spain with the objectives of determining optimum harvest maturities for mineral composition and redistribution patterns of nutrient elements during seed-filling. Maturity stages were defined as pr ...
... AIMS: Biological nitrogen fixation by legumes is expected to play a greater role in future cropping systems. Our study evaluated 19 legume species grown as cover crops in Swiss agroecosystems. METHODS: Two field experiments were set up to monitor the biomass production and nitrogen content of 19 legumes and two non-legumes. The proportion of nitrogen derived from atmospheric N₂ (%Ndfa) was assesse ...
... The accumulation of nickel ions in the roots and shoots of vetch seedlings (Vicia sativa L.) at increasing concentrations of nickel chloride in the medium was studied. It was shown that the accumulation of nickel in the shoots was increased when the concentration of nickel chloride in the medium was more than 50 μM. The bioconcentration factor and sustainability index for vetch seedlings were calc ...
Brassica; Echinochloa; Vicia sativa; application rate; bacterial biomass; biomass production; composts; dairy farming; farmers; fertilizer application; field experimentation; forage; forage crops; gravimetric water content; greenhouses; gypsum; hybrids; legumes; millets; mineral content; mineral fertilizers; pastures; plant available water; soil fungi; soil quality; soil treatment; soil types; sowing; turnips; wastes; weeds
Abstract:
... This study examined the response of forage crops to composted dairy waste (compost) applied at low rates and investigated effects on soil health. The evenness of spreading compost by commercial machinery was also assessed. An experiment was established on a commercial dairy farm with target rates of compost up to 5 t ha⁻¹ applied to a field containing millet [Echinochloa esculenta (A. Braun) H. Sc ...
... Many aphid species exhibit geographical variation in the mode of reproduction that ranges from cyclical parthenogenesis with a sexual phase to obligate parthenogenesis (asexual reproduction). Theoretical studies predict that organisms reproducing asexually should maintain higher allelic diversity per locus but lower genotypic diversity than organisms reproducing sexually. To corroborate this hypot ...
... In Mediterranean semiarid areas, barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) are major crops because they are well adapted to limited-water environments. In this study we tested the performance of alternative rotations to the typical barley and wheat monocultures in a rainfed Mediterranean semiarid area of northeastern Spain under a no-tillage (NT) system. Four rotations were esta ...
... The forage potential of several annual winter legumes-crimson clover (Trifolium incarnatum L.), faba beans (Vicia faba L.), forage peas (Pisum sativum L.) serradella (Ornithopus sativus Brot.) and vetches (Vicia sativa L. and Vicia villosa Roth.)--was evaluated over two growing seasons in the wet and mild winter areas of Galicia (north-west Spain) with a moderately acid soil, at the two normal har ...
... Promising accessions of common vetch (Vicia sativa L.), narbon vetch (Vicia narbonensis L.) and grasspea (Lathyrus sativus L.) adapted to non-tropical dry areas of Central and West Asia, and North Africa, where mean annual rainfall is 200-350mm have been identified, but their herbage yield and quality under on-farm conditions are not documented. An on-farm study was conducted over two growing seas ...
... Little is known about on-farm performance of promising accessions of common vetch (Vicia sativa L.), narbon vetch (Vicia narbonensis L.) and grasspea (Lathyrus sativus L.) that are adapted to the non-tropical dry areas of Central and West Asia, and North Africa, where mean annual rainfall is 200-350mm. An on-farm study was conducted over two growing seasons in non-tropical wet and dry semi-arid en ...
... The effects of direct and indirect defenses differ among plant species, and the variation in the mode of plant defenses might reflect physiological and/or ecological constraints of each mode of defense related to the growth and reproduction of individual plant species. To evaluate the advantages and disadvantages of indirect ant-mediated defense via extrafloral nectaries (EFNs), we compared the he ...
... The extract of artichoke Cynara cardunculus L. (CCE) was investigated for its potential antigenotoxic and antioxidant effects using four experimental model systems. In the Saccharomyces cerevisiae mutagenicity/antimutagenicity assay, CCE significantly reduced the frequency of 4-nitroquinoline-N-oxide-induced revertants at the ilv1 locus and mitotic gene convertants at the trp5 locus in the diploid ...
... The antioxidant activity of the polyphenols extracted from the seeds of 28 Vicia species collected in southern Spain was investigated. The seeds were all taken from wild populations, although some of these species are or have been used to feed livestock and for crop rotation. The polyphenol concentration in ground seeds, ranging from 1.9 to 21.3 mg/g, was generally lower in populations belonging t ...
Avena sativa; Food and Agriculture Organization; Helianthus annuus; Solanum tuberosum; Vicia faba; Vicia sativa; crop production; faba beans; field experimentation; oats; potatoes; transpiration; water use efficiency; China
Abstract:
... Water availability is a key biophysical factor determining agricultural production potential. The FAO crop water response model AquaCrop was developed to estimate crop production under water limiting conditions. This model uses the normalized water productivity, WP* (gm−2d−1), to estimate the attainable rate of crop growth under water limitation. In this study we assessed the value and the consist ...
... Uranium (U) contamination due to mining and metallurgical operations is a serious problem and poses a high potential threat to humans and other organisms. The application of amendments and/or plants, known as assisted phytoremediation, can accelerate the adsorption, complexation and precipitation processes in soil, and therefore can facilitate the restoration of U mining areas. This study located ...
... Inhibition of root nodule formation on leguminous plants by already induced or existing root nodules is called auto-regulation of root nodule formation (AUT). Optimal conditions for AUT were determined using a split-root technique newly developed for Vicia sativa subsp. nigra. Infection of a root A with nodulating Rhizobium leguminosarum bv. viciae bacteria systemically inhibited nodulation of a s ...
... A semiselective agar medium (T-5) was used to sample environment and plant material as a habitat for Pseudomonas viridiflava. Soil, irrigation water, soybean foliage, and foliage from various weeds in an onion-growing area were assayed over a 5-year period. P. viridiflava was recovered only as an epiphytic resident from weed species that included cutleaf evening primrose, dandelion, common fumitor ...