GARDENING SOIL CARE WESTON COUNTY
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This document discusses gardening and soil composition. It explains that soil is made up of around 45% mineral particles, 5% organic matter, and 50% pore space. The mineral particles can be sand, silt, or clay. Loam, which is a mixture of the particle types, makes for the best soil for plant growth. Organic matter adds nutrients, holds water, and improves soil structure. The document also provides the results of soil tests from two garden plots, noting characteristics like texture, organic matter, and pH levels. It recommends amounts of nitrogen, phosphorus, and zinc to add to the respective plots.
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GARDENING SOIL CARE WESTON COUNTY
- 3. Collection of living and inanimate materials on the earth’s surface that supports plant life.
- 7. SOIL STRUCTURE: A-prismatic; B-columnar; C-angular blocky; D-subangular blocky; E-platy; F-granular
Editor's Notes
- PRETEST How many have kept a garden? Why study gardening?
- What is horticulture? The culture of the garden. Today the term is used for the care of vegetable gardens, flower gardens, fruit trees, shade and trees and shrubs, and lawns. I am not a horticulturist.
- What is it? Is it dirt?
- Divided into 3 grain sizes. OBJECTS: Sand – 6” tether ball to 10’ boulder Silt – bean to tether ball Clay – bean size and smaller Sand – gritty, loose, water penetrates quickly, holds little water Silt – smooth, good growing medium, medium water holding and penetration Clay – sticky, hard, little water penetration, holds water tight Loam – ideal growing medium 40% each sand and silt, 20% clay
- OM very desirable. Holding soil in clumps – structure.
- Influences water penetration & availability, root growth.
- Profile Horizons Topsoil – A Subsoil – B Do not plow or till horizon B into horizon A.
- Acid level Influenced by type of minerals, salts, OM Most plants prefer slightly acid – Boot Camp 7.6 & 8.0.
- Lime influences pH. Dilution pH used if paste pH is 8.5+, to determine amount of sodium. Excess sodium very detrimental to soils. Salt estimate: affects pH, excess salts keep water from plants (like drinking sea water). Nitrate: need 100+ ppm.
- Phosphorus: need: 52+ ppm in clay or lime soils 43+ ppm – medium soils 35+ ppm – sandy soils Potassium: need 120+ ppm Iron and zinc typically deficient in high pH soils.