Tag Archives: hydroponic

However, more work is required to determine how to better represent coupled microbe–plant nutrient competition and transport limitations. For example, we have previously shown that one can apply a homogenous soil environment assumption and include the substrate diffusivity constraint in the ECA competition parameters. In this approach, the diffusivity constraint can be directly integrated into the substrate …

Continue reading “Nutrients would diffuse and advect from the bulk soil toward the root zone”

Accordingly, continuous harvesting and extraction can be carried out using appropriate equipment such as screw presses , whereas continuous filtration and chromatography can take advantage of the same equipment successfully used with microbial and mammalian cell cultures . Therefore, plant-based production platforms can benefit from the same >4-fold increase in space-time yield that can be achieved by continuous …

Continue reading “The EU follows both decentralized processes as well as centralized procedures covering all Member States”

Reports from all over the world show that several destructive isolates of CTV, not dependent on sensitive rootstocks, may suddenly appear as a result of rearrangements or mutations of the genome. Also, it appears that bio-indexing on indicator plants or other official equivalent methods cannot help to limit the introduction of exotic strains, given that …

Continue reading “Primers were designed for these specific reads and are under testing”

Surface area-proportional growth could arise if nutrient/waste exchange across the plasma membrane is a limiting factor for growth. We observed that red light-illuminated optoBem1 cells also exhibited a change in DNA content over time. While most cells maintained a ploidy of 2N or less during the first 3 h of Bem1 disruption, a population of …

Continue reading “Mineral oil was then carefully layered on top of each sample to prevent evaporation”

Because of their central positions, the electrodes are closer to the expected sources of current and thus in the region of maximum potential gradient. Hence, this electrode configuration maximizes the changes in both magnitude and sign of the measured ΔV associated with a change in the CSD distribution. The electrode diameter was 1.5 mm. The penetration …

Continue reading “The obtained inverted responses were compared with the responses of the true models”

There are numerous reports of upland forests and savannas that switched for periods of time to CH4 sources , and wet-land forests that switched to CH4 sinks . In most cases the proximate cause for the shift was a change in soil water content, but the ultimate cause varied from seasonal shifts in precipitation and …

Continue reading “We are unaware of any published measurements of CH4 concentrations in xylem sap”

These insecticides have outstanding efficacy in crop protection against a number of pest invertebrates , especially piercing–sucking insect herbivores . However, neonicotinoids have limited efficacy against lepidopteran and coleopteran pests . Advantages associated with systemic insecticides over nonsystemic insecticides include: 1) reduced sensitivity to spray coverage and canopy penetration , as the active ingredient translocates …

Continue reading “We present and discuss studies supporting this hypothesis”

The 75th percentile varied widely by commodity: $6,172 for those primarily employed by FLCs, $10,572 for those in grapes and $29,465 for those in mushrooms.The number of individuals and jobs reported by agricultural employers increased in the 1990s, reflecting increased production of labor-intensive fruit and vegetable crops and, the data suggests, more farm workers each worked …

Continue reading “Workers who avoid FLCs experience higher earnings in agriculture or in the non-farm labor market”

The cumulative crop evapotranspiration during the 29 day experimental period was equal to 65.3 mm, and daily ETC varied from 1.68 to 3.39 mm. Irrigation was initiated on 16 August 2010 and terminated on 13 September, 2010. Irrigation and rainfall were recorded daily and drainage volume was measured 3 times per week throughout the trial period. …

Continue reading “The simulated NO3-N uptake accounted only for 25.5% of applied nitrogen”

Our age adjustment delivers a measure that could be called ‘completed polygyny’ by analogy to ‘completed fertility’. The populations exhibiting surprisingly high levels of polygyny by our definition—e.g. the Ache´, Hadza, Maya, English and Krummho¨rn populations—reflect the prevalence of serial monogamy, not polygyny in the usual sense of multiple concurrent wives. Although most anthropological analyses …

Continue reading “We also assume that females hold no wealth and are identical in their reproductive potential”