TEST 4 Notes bio1202

TEST 4 Notes bio1202 - Chapter37:SoilandPlantNutrition...

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Chapter 37: Soil and Plant Nutrition Concept 37.1: Soil is a living, finite resource o In addition to climate, texture and composition of soil are major factors determining the distribution of plants. o Soil is made up of particles derived from the breakdown of rocks (minerals) along with organic material (humus) Texture: the relative amounts of various sizes of soils particles o Soil horizons Soil horizons are visible in vertical profile Humus consists of decomposing organic material o Availability of water After rains, smaller spaces in the soil retain water because of H-bonding with clay Film of loosely-bound water is available to plant roots Not all the soil water can be extracted by the plant o Availability of mineral ions Many cations are attracted to negatively charged soil particles Cation exchange is a process that contributes to their uptake Plants decrease the pH of the soil fluid
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This note was uploaded on 03/31/2010 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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TEST 4 Notes bio1202 - Chapter37:SoilandPlantNutrition...

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