Soil Science: Methods & Applications
Offers a practical introduction to the various basic methods of assessing the properties of soil. Each method is explained in a concise and accessible manner, providing useful guidance on how each method might be used in a practical situation.
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Chapter 3Organic Materials cAliveand Dead Section 3 1 Root sampling and measurement 3 2 The measurement of microbial biomass
Nitrogen in Soils
Olsens method and the determination of an availabilityindex 10 4 The measurementof phosphorusin plant material
The Availability of Water inSoils Section 12 1 The measurementof water lossfromsoils 12 2 The estimation ofwater
techniquestostudy responses and interactions 13 2 The Broadbalk Experiment
and Sodicity Section 14 1 The determination ofthe compositionofirrigation
Pesticides and Metals
1 The effects ofweedsoncrop yield
The Availability ofPlant Nutrients c Potassium Calcium and Magnesium
Molar masses ofselected elements
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acid air-dry soil aluminium amount andthe biomass buffer capacity buffer solution bulk density CaCO calcium calculate canbe carbon cent charge clay cm b3 cmol c kg crop cultivation cylinder decrease depth determined diameter dichromate Dissolve dry matter effects electrode example extract fertilizer field capacity Figure flask fraction gibbsite gives humus hydraulic conductivity increases inputs inthe ions kaolinite kg b1 layer leaching lime mass material measured method microbial minerals molar mass NaOH normally Note nutrients ofsoil ofthe ofwater organic matter content oven-dry soil oxidized percentage phosphate pipette plant Plate plotted ploughing pores porosity potassium potential reaction reacts released respiration roots sample sand saturation Section sesquioxides sieve soil pH soil solution soil surface soil water suction solution concentration standard sulphate Table temperature tensiometer texture thesoil titration tothe tube uptake values variability volumetric volumetric flask water content water potential Weigh