How is horticulture interrelated How is horticulture interrelated with the environment?with the environment?

What is the environment?What is the environment?

Environment- all living things that affect Environment- all living things that affect the life of an organismthe life of an organism

– Biotic factors- living thingsBiotic factors- living things

– Abiotic factors- non-living thingsAbiotic factors- non-living things

What are the important issues of What are the important issues of horticulture and the environment?horticulture and the environment?Intensive land useIntensive land use– Using large fields to get top yieldsUsing large fields to get top yields

Integrated Pest ManagementIntegrated Pest Management– Using approaches that are environmentally Using approaches that are environmentally

friendly to control unwanted organismsfriendly to control unwanted organisms

Public DemandPublic Demand– Producing high-quality, inexpensive products Producing high-quality, inexpensive products

without harming the environmentwithout harming the environment

Grower DilemmaGrower Dilemma– Producing quality products, yet dealing with Producing quality products, yet dealing with

concerns about the environmentconcerns about the environment

BiotechnologyBiotechnology– Genetically changing plants to have useful Genetically changing plants to have useful

featuresfeatures

EmotionEmotion– Dealing with different opinions about Dealing with different opinions about

environmental issues cause emotions to run environmental issues cause emotions to run highhigh

What are the benefits of What are the benefits of horticulture?horticulture?

1.1. Recreational and aesthetic valueRecreational and aesthetic value2.2. Control soil erosionControl soil erosion3.3. Absorb atmospheric pollutionAbsorb atmospheric pollution4.4. Noise and sound bufferNoise and sound buffer5.5. Control dustControl dust6.6. Cooling effect in hot weatherCooling effect in hot weather7.7. Filter fertilizers and pesticides from the Filter fertilizers and pesticides from the

environmentenvironment8.8. Provide wildlife habitatProvide wildlife habitat9.9. Increase land valueIncrease land value10.10. Increase ground water supplyIncrease ground water supply

How does horticulture maintain How does horticulture maintain water supplies?water supplies?

1.1. Holds moisture in upper soil layerHolds moisture in upper soil layer

2.2. Reduces runoff and soil erosionReduces runoff and soil erosion

3.3. Filters pesticidesFilters pesticides

How does horticulture maintain the How does horticulture maintain the atmosphere?atmosphere?

1.1. Absorbs ozone, carbon dioxide, and Absorbs ozone, carbon dioxide, and hydrogen fluoridehydrogen fluoride

2.2. Produces oxygenProduces oxygen

Dangers from horticulture practicesDangers from horticulture practices

1.1. Excessive and improper use of Excessive and improper use of pesticidespesticides

2.2. Soil erosionSoil erosion

3.3. Deplete groundwater suppliesDeplete groundwater supplies

4.4. Improper disposal of wastesImproper disposal of wastes

What is pollution?What is pollution?

Harmful or degrading materials in the Harmful or degrading materials in the environmentenvironment

What is non-point source pollution?What is non-point source pollution?

Harmful materials coming from sources Harmful materials coming from sources that cannot be specifically identifiedthat cannot be specifically identified– Examples:Examples:

Leaching and runoff of nutrients or pesticidesLeaching and runoff of nutrients or pesticides

Soil erosion and runoff loss of sedimentSoil erosion and runoff loss of sediment

Beneficial non-target soil organisms killed by Beneficial non-target soil organisms killed by pesticidespesticides

Excessive use of water for irrigation reduces Excessive use of water for irrigation reduces ground water suppliesground water supplies

What is the danger of non-point What is the danger of non-point source pollution?source pollution?

1.1. Pest populations may develop resistance Pest populations may develop resistance to pesticidesto pesticides

2.2. Follow steps that reduce the potential for Follow steps that reduce the potential for damage.damage.

What is point source pollution?What is point source pollution?

Harmful materials from a definite and Harmful materials from a definite and identifiable locationidentifiable location– ExampleExample

Pesticide spill into streamPesticide spill into stream