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Potassium fixation in soil size fractions of arid soils
calcareous soils Iran smectite soil fractionation
2015/3/9
Amounts of potassium (K) fixed in soil fractions of 10 calcareous soils of southern Iran were measured to evaluate the contributions of different soil size fractions to K fixation. Soil particles were...
Molecular size distribution and hydrophilic and hydrophobic properties of humic acids isolated from forest soil
forest soil humic acids HPSEC hydrophobic fractions hydrophilic fractions
2015/1/30
The aim of the present paper was to determine hydrophilic and hydrophobic properties and the degree of polydispersity of humic acids depending on their degree of maturity and the properties of the pla...
Impact of the size of nitrogen fertiliser application rate on N2O flux
nitrous oxide soil emissions fertilising fertiliser spreader
2014/3/28
The application rate of a nitrogen fertiliser is one of the most important factors that affect the nitrous oxide (N2O) flux. Calk ammonium nitrate with 27% nitrogen content was spread by a fertiliser ...
Quantitative and qualitative changes of humus in whole soils and their particle size fractions as influenced by different levels of compost application
Paddy and Upland Fields Straw-Cow Dung Compost
2013/3/4
Effect of long-term application (ca. 30 years) of compost at different levels on humus composi-tion of whole soils and their particle size frac-tions in a field subjected mainly to double cropping (ba...
Effects of different levels of compost application on amounts and distribution of organic nitrogen forms in soil particle size fractions subjected mainly to double cropping
Compost Application Upland and Paddy Fields Soil Organic N Forms Size Fractions
2013/3/4
Effects of different levels of compost application on the amounts and percentage distribution of organic N forms in whole soils and particle size fractions were investigated. Soil samples were collect...
Soil texture fractions and fractal dimension of particle size distribution as predictors of interrill erodibility
Erosion predictor fractal dimension
2011/6/29
Choosing a particular textural fraction as an erodibility predictor is often confusing because various fractions of soil particles have been introduced as erodibility index by many researchers.
Soil texture fractions and fractal dimension of particle size distribution as predictors of interrill erodibility
Erosion predictor fractal dimension interrill erodibility soil texture
2011/3/22
Choosing a particular textural fraction as an erodibility predictor is often confusing because various fractions of soil particles have been introduced as erodibility index by many researchers. Recent...
Effect of Plot Size on Accuracy of Yield Estimation of Rainfed Lowland Rice Genotypes with Different Plant Heights and Grown under Different Soil Fertility Conditions
Competition Plant height Plot size Rice genotypes Selection trial Yield estimation
2009/7/29
Breeding programs for rainfed lowland rice normally use large plot sizes for accurate estimation of yield. Resource requirements are reduced and more genotypes can be tested if a small plot size can b...
The Effects of Four Organic Soil Conditioners on Aggregate Stability, Pore Size Distribution, and Respiration Activity in a Sandy Loam Soil
Soil conditioner mean weight diameter pore size distribution soil respiration water aggregate stability
2009/7/3
In coarse-textured soils, low water and nutrient holding capacity due to the high number of macropores limits crop growth. To minimize these limitations the application of various soil conditioners (...