نتایج جستجو برای: soil cation exchange capacity
تعداد نتایج: 677170 فیلتر نتایج به سال:
Soil cation exchange capacity (CEC) measures the capability of soils to hold and release nutrients. It is an important measure for classifying planning nutrient additions, but it not included in routine soil tests offered farmers. In this study, we compared CEC measured with standard laboratory practices (neutral ammonium acetate [AAc]) estimated from agronomic test data (Mehlich-3 AAc). We app...
Common areas of research needed to measure soil carbon include: (1) the impact forest management, (2) climate change, and (3) increased dioxide. The organic matter has a great influence on productivity site due its effect physical (bulk density, water retention capacity), biological (microbial populations) chemical (cation exchange capacity) properties soils. Recently, there have also been clai...
Mineralogy is one of the most influential soil properties that change from upper- to lower slope positions, depending on the climate differences. Such changes affect soil properties such as phosphorus sorption and desorption processes differently. Therefore, this study was carried out to investigate the clay mineralogy of soils in four toposequences from arid (Isfahan) and semiarid (Chaharmahal...
This article presents the method of extraction-preconcentration of Lead, Cadmium, and Nickel ions from food samples using the Ghezeljeh montmorillonite nanoclay (Geleh-Sar-Shoor) as a new native adsorbent in batch single component systems. The extraction-preconcentration of heavy metals were carried out by applying the solid phase extraction (SPE) method followed by atomic abs...
Data acquired from the hyperspectral airborne sensor DAIS-7915 over Antequera in southern Spain was processed to yield a quantitative soil swelling potential map based on three physicochemical soil properties currently used in engineering as measures of soil swelling namely cation exchange capacity (CEC), coefficient of linear extensibility (COLE), and Saturated moisture content (SP). The metho...
Yield potential and soil quality under alternative crop production practices for fresh market pepper
This study was conducted in Florida in 1999 and 2000 to examine the impact of alternative crop production practices on soil quality and yields of fresh market pepper (Capsicum annuum). Replicated field plots were established on an organic vegetable farm that had been under certification for 5 years and on a conventional pepper farm that had been fumigated with methyl bromide for 25 consecutive ...
Movement of liquor constituents from animal-waste lagoons has the potential to degrade ground water quality. The depth of movement and concentrations of lagoon-liquor constituents in the soil underlying three cattle (Bos taurus)-waste retention lagoons and one swine (Sus scrofa)-waste lagoon were determined. Samples were taken by using a direct-push coring machine, dissected by depth, and analy...
Afforestation, as a tool to mitigate carbon emission is constrained by available land areain several countries, but Iran has the potential of plantation. In doing so, differences in soilstocks between tree species could give an indication of the effects of future managementchanges. Hence, a better understanding of tree species traits on soil properties is required topredict how changes in ecosy...
Abstract This work examined the influence of endophytic fungi strains Exserohilum rostratum NMS1.5 and Xylariaceae sp. KKL3 mixed zeolite/chitosan (ZL-CH) on non-contaminated contaminated azo dye AR88 soil. The experiment used a randomized complete block design (RCBD) with LSD test (p<0.05) for 10 treatments consisting 50 grams soil (non-contaminated) 5 mg/L (contaminated soil), 0.1-gram ZL-...
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