Soil types, relation

Vanderborght, J., Vanclooster, M., Timmerman, A., Seuntjens, P., Mallants, D., Kim, D.J., Jacques, D., Hubrechts, L., Gonzalez, C., Feyen, J., Diels, J., and Deckers, J. Overview of inert tracer experiment in key belgian soil types relation between transport, and soil morphological and hydraulic properties. Water Resources Research 37[12], 2873-2888. 2001. 

The magnitude and composition of root exudates are a reflection of the physiological condition of the plant imposed by factors related to light (intensity, duration, and quality), temperature, soil pH, anaerobiosis, soil moisture, soil type, and nutritional status. The in-... 

Parameters subject to calibration within SWAT were selected after a preliminary sensitivity analysis and literature review, to partially compensate for the inadequacy of the initial values assumed for some of them (especially those related to soil type), model structure and other sources of uncertainty. A detailed description about the SWAT parameters can be found in [5, 6], while a brief description of the selected parameters is provided next ... 

Sensitive terrestrial plants die when soil zinc levels exceed 100 mg/kg or when plant zinc content exceeds 178 mg/kg DW (Table 9.5). The phytotoxic zinc level for barley (Hordeum vulgare) is not known, but zinc content of barley leaf rarely exceeds 100 mg/kg DW (Chang et al. 1983). Uptake of zinc from soils by plants depends on soil type for example, uptake is lower in coarse loamy soils than in fine loamy soils (Chang et al. 1983). Zinc uptake by barley leaf is greater with increasing rate of sludge application, but the relation is not proportional (Table 9.5). 

Soil-related data (HM and BC content in soil parent materials) were included in calculations to account the values of HM weathering. Also we considered the influence of soil types on forest biomass productivity. Runoff data (at scale 0.5 x 0.50 were directly used to get input data on drainage water fluxes, Qie. Forest-type-related data (wood biomass growth and HM content in wood biomass) inserted into our database were subdivided depending on either coniferous, deciduous or mixed forests. 

The parameters related to soil-related, data (to define soil solution status such as pHss, DOM or DOC, SPM) influences on HM toxicity for biota. These data should be either measured (in a few plots only) or simulated since this information is mainly not perennially monitored for forested areas of Russia. Soil pH data (water or KC1 extraction) are more available parameters as depending on soil type. The same FAO soil map with added attributive tables containing soil pH values can be used for this purpose. 

Name two major different types of soil structure. How does soil structure relate to a soil s oxidative or reductive condition ... 

Singh, B. Gdkes, R.J. (1991) Phosphorus sorption in relation to soil properties for the major soil types of south-western Australia. Austr. J. Soil Res. 29 603-618... 

There are many different types of soil, and extractant formulations have been fine-tuned to suit the soil. The particular extractant may also be chosen on the basis of familiarity over the years, and because it is easier to compare results with those previously obtained, and hence make recommendations to correct deficiencies based on experience. Usually one is not interested in the total amount of a soil nutrient, rather in the amount that is in a form available to the roots of the plant. Regional advisory laboratories over a long period may have developed index tables relating to the found concentration of nutrient in local soil types and the corrective amount of fertilizer required. It would probably be wise to adopt the same methods that have been used to... 

The emission of NH3 from field application of manure and mineral fertiliser takes place at distinct times of the year and has a relatively short duration compared with point source emissions. Soil type [49] and the application method are crucial for the magnitude of the emission. Very high emissions are related to the broad spread application methods, whereas soil injection leads to very low emissions. For these emissions, the temporal variations can be described by process-based models on the... 

Field Locations. For each field test location a variety of information is collected and recorded in addition to the samples which are collected. Seven general categories of information can be defined. Three simple ones are 1) test design or plot plan, 2) location and 3) field use history for several years. Field soil characterization 4) includes screen analysis (soil type), pH measurement, and organic matter content. Weather information 5) includes daily temperatures and rainfall and/or irrigations during the test. Application related data 6) consists of dates, application modes, weather conditions at application, calculations and calibrations. Harvest information 7) includes crop name, part, amount, date, and collector. 

Sandalls, F.J., Eggleton, A.E.J. Gaudern, S.L. (1989) Uptake of radiocaesium by upland vegetation in relation to soil type. Harwell Laboratory Oxfordshire Report AERE 13389. 

There are two aspects to the use of single extractants. Firstly they are used for the prediction of plant availability, plant uptake or plant growth in an agricultural context. Selective single extractants for most essential nutrient trace elements have been identified and validated for these purposes for different crops and soil types by field experiments relating plant, uptake, growth or health over several years. Of these, the most successful and widely used are EDTA, acetic acid and ammonium acetate. Similar validated extractants are also available for a few toxic elements such as molybdenum (to animals) or nickel at excess soil contents that can occur as a result of natural, geological, soil parent material contents. 

The burial of a body alters the decomposition process significantly from surface decomposition, particularly with relation to scavenging, temperature, and insect colonization (Fiedler and Graw 2003). The insects generally colonizing a body laid on the surface are inhibited, as are the airborne bacteria (Smith 1986). The depth, soil type and nature of the burial are obviously important factors (Lundt 1964). 

With the related compound PH 60-38, (III), a comparable but smaller effect of the particle size on the apparent rate of degradation in soils was observed as is illustrated in Table 1 The influence of the type of soil on the rate of degradation of diflubenzuron is much less important, because with five agricultural soils and three hydrosoils, including the soil types recommended by the EPA and the German BBA, the variation in the halflife was only a factor of approximately two. 

Differences in microclimates, soil types, and general climatic conditions are difficult to measure and relate to grape quality. Most of the advancements in adapting the right grape to the right location have come about by... 

If models are available for predicting the bioavailability of a substance in soils, these can be used to normalize the ecotoxicity data and to derive a normalized SQS related to a certain soil type. Such models have, for example, been developed for nickel and copper in soils. 

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