Milling of plant and soil material in plastic tubes, such as microcentrifuge tubes, over-estimates carbon (C) and under-estimates nitrogen (N) concentrations due to the introduction of polypropylene into milled samples, as identified using Fourier-transform infra-red spectroscopy. Methods and results
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COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS Vol. 35, Nos. 3 & 4, pp. 537 545, 2004 A Simple Roller-Mill Grinding Procedure for Plant and Soil Samples # S. L. Arnold * and J. S. Schepers USDA-ARS-SWCRU, University of Nebraska, Lincoln, Nebraska, USA ABSTRACT Obtaining finely ground, homogeneous plant and soil samples for
Plant Materials Technical Note Background Grain drills and seed planters are key components in developing successful conservation plantings. They are complex machines that deliver seed at a metered rate, place it at a consistent depth in the soil, and produce light compaction to provide good seed to soil contact. Planters and
The primary objectives of this study were to determine 210 Pb and 210 Po concentrations in soil and native plants and to estimate plant/soil concentration ratios from various sites around a uranium mining and milling operation that is typical of most in the Western U.S. Soil and vegetation samples were collected at exposed, weathered tailings; near the edge of a tailings pond; downwind from a ...
Plant Soil (2013) 369:509-513 511 Table 1 Fitted lines for carbon (C) and nitrogen (N) concentrations of roots milled in microcentrifuge tubes and stainless steel jars for each 'treatment' (milling time, milling intensity, sample size) Element Treatment Milling method Predicted line Treatment*1 Milling Method Treatment x milling method
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Milling small amounts of soil and plant material in microcentrifuge tubes risks over-estimating %C and potentially under-estimating %N. To reduce sample contamination, milling of material in microcentrifuge tubes should be kept to as short duration, as low intensity and as large a sample size as possible for achieving the required particle size.
11.5.3.2 Effects of salinity on plant growth. Salinity in soil has a similar effect on plant growth as that of drought, leading to a shortage of moisture absorption by plant roots. As already mentioned in the previous sections, excess salts in the soil cause poor and spotted growth among plants, depending on the concentration of salts in the soil.
Milling plant and soil material in plastic tubes over-estimates carbon and under-estimates nitrogen concentrations Milling plant and soil material in plastic tubes over-estimates carbon and under-estimates... Smith, Stuart; Robertson, A.; Meharg, Andrew; Pakeman, Robin; Johnson, David; Woodin, Sarah; Wal, René 00:00:00
Soil microorganisms can be grouped into bacteria, actinomycetes, fungi, algae, protozoa, and nematodes. Apart from the dead plant or animal residues in soils, SOM is composed of a significant content of living microorganisms and their dead fractions (Hoorman and Islam, 2010). The humus fraction is resistant to microbial decomposition and ...
Seedlings of Lotus glaberMill., were grown in a native saline-sodic soil in a greenhouse for 50 days and then subjected to waterlogging for an additional period of 40 days. The effect of soil waterlogging was evaluated by measuring plant growth allocation, mineral nutrition and soil chemical properties. Rhizobiumnodules and mycorrhizal colonisation in L. glaberroots were measured before and ...
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