AGRO 4052 : AGRO 4052 SPRING 2013 1st Exam (2)
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Name: ________________________: true or false (30 points) Root interception is the principal transport mechanism of nutrients from soil solution to root rhizosphere. An acidic, sandy soil would require frequent liming than an acidic clayey soil. Soil acidity is greatest in areas with high rainfall. _______: mineralization is a process of converting inorganic form of nutrients to. Charge arising from isomorphous substitution is a permanent charge. The smaller the hydrated radius of cation is, the weaker it can be adsorbed on the exchange site. Exchangeable acidity can be estimated from cec and base saturation. Under certain conditions, anion such as no3 soil exchange sites. _______: mineral nutrients must be in ionized state before it can be assimilated by plants. _______: clay has higher cec than organic matter. _______: a fertile soil is always a productive soil. _______: endomycorrhizal fungi are commonly associated with trees. In symplast pathway, water flows from cell to cell through the plasmodesmata.
