'Field capacity' diaporamas de présentation

SUSTAINABLE STORMWATER MANAGEMENT in the URBAN ENVIRONMENT

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Environmental Constraints

Environmental Constraints. Text Chapter 3. Subtropical Regions. Most commercial citrus production 23.5 - 40 o NS Latitudes Minimum temperatures > -7 o C (19.6 o F Examples Rio Grande Valley ~ 26 o NL Orlando, Florida ~ 28 o NL Indio, California ~ 33 o NL.

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Soil Physical Properties Used to Assess Soil Quality

Soil Physical Properties Used to Assess Soil Quality. Field Exercise. Two Ways to Assess Soil Quality. Measurements over time. Comparing management systems. Examples: Side-by-side comparisons of management systems. Measurements in the same field over time.

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Unsaturated Flow

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Ag Science

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Soil, Salinity and Nutrition

Soil, Salinity and Nutrition. Soils are classified according to:. Their origin-e.g., volcanic ash, granite deposit, organic peat Mineral or Inorganic and organic soils- arid climate Soil reaction-pH: acidic, neutral and alkaline Water holding capacity Cation Exchange Capacity (CEC)

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Soils

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Growing space and growth factor gradients

Growing space and growth factor gradients. Controlling disturbances is how we control competition. Competition. Growth factors Consider light and water (aboveground and belowground). TULIP POPLAR. VIRGINIA PINE. MESIC SOIL. DRY SOIL. MESIC SOIL. DRY SOIL. GROWING TOGETHER. MESIC SOIL.

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Soil Water

Soil Water. How much Nitrogen is in the Air above one acre?. There are 69,155,856 pounds of nitrogen in the air above an acre. Why is water important to plants?. it is a nutrient serves as a solvent for other nutrients. What are the water requirements for plants?.

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Land Preparation Machinery

Land Preparation Machinery. Part 1: Understanding the PalayCheck System. MACHINES. The PLOW. The PUMP. The HARROW. The LEVELER. The carabao can: plow 0.20 ha in a day level 1 ha in a day. The PLOW. Four wheel tractor with disc harrow attachment.

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ECONOMICS OF AUTONOMOUS MACHINERY

ECONOMICS OF AUTONOMOUS MACHINERY. Economic Issues Regarding The Implementation Of Autonomous Machinery In U.S. Agriculture Jordan Shockley Agricultural Economics. Some Economic Issues:. How much will they cost? What are the benefits? Are they more profitable than conventional machines?

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Water

Water. Relation to Plants. Properties of Water. Associated Uses of Water. Dissolves soil minerals, sugar, amino acids, widest range of any liquid!. Polar Solvent.

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MIFIRA Framework Lecture 3 Other response analysis tools

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UNICEF

UNICEF. C ore C ommitments for C hildren in Emergencies: Nutrition.

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Soils

Soils. Soil is formed through the interaction of climate, parent material, topography, vegetation, living organisms and time. Solid portion of soil consists of minerals and organic matter. Pore spaces between solid particles filled with air or water. Soils. Soils divided into horizons :

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An Introduction to Water Budget Equation

An Introduction to Water Budget Equation. Mrinmoy Majumder www.mrinmoy.majumder.info www.baipatra.ws. Hydrologic Cycle. Source of Energy. Transpiration (T). Precipitation (P). Canopy Evaporation (E c ). Soil Evaporation (E s ). Evaporation (E). Surface Runoff (Q).

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Water Balance Model

Water Balance Model. Ted Sammis. Water Balance. I+R-D-Et+- del SM=0 I= irrigation inches 1-4 inches R= rainfall inches = 0-1 inches Et= evapotranspiration 0.4 inches/day Del SM= change in soil moisture inches Time step 1 day. I+R-D-Et+- del SM=0 Del SM= SM i - SM i-1

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