Spm Est Essay
SAMPLE QUESTION
TASK
Write a report Make a choice Compare the 2 methods Give reasons for choice of one over the other Add any relevant information
Methods Insecticides
•
Advantages Save great quantities of food from pests and diseases before harvest or during storage. Increase crop yield.
• •
Disadvantages Kills useful insects. Adverse effects on wildlife for many years to come.
•
Biological control
•
Using natural predators to control pests. Host resistance is not a problem.
•
Expensive to find biological control agents. Can never eradicate a pest completely.
•
•
•
Advantage : Save great quantities of food from pests and diseases before harvest or during storage.
harvest and storage - the critical period that determines a farmer’s income reliability of insecticides ensures that the quantities of food that is harvested and stored is maintained at the most maximum.
•
Choice Made : INSECTICIDES
Advantage : Increase crop yield.
•
a variety of insecticides to choose from on the market, such as DDT, malation and furadan able to make a choice as to the most effective at the most affordable also increase their profit margin.
•
•
useful insects that help pollination and pest control, such as butterflies, bees and ladybugs. can be resolved by spraying the insecticides after pollination has occurred and when plants are in bud.
•
Disadvantage : Kills useful insects.
Choice Made : INSECTICIDES
•
can easily be reduced by using the insecticides which are lowest in the toxicity range
Disadvantage : Adverse effects on wildlife for many years to come.
Advantage : Save great quantities of food from pests and diseases before harvest or during storage. Choice Made : INSECTICIDES
Disadvantage : Kills useful insects.
Advantage : Increase crop yield.
Disadvantage : Adverse effects on wildlife for many years to come.
Methods Insecticides
•
Advantages Save great
TASK
Write a report Make a choice Compare the 2 methods Give reasons for choice of one over the other Add any relevant information
Methods Insecticides
•
Advantages Save great quantities of food from pests and diseases before harvest or during storage. Increase crop yield.
• •
Disadvantages Kills useful insects. Adverse effects on wildlife for many years to come.
•
Biological control
•
Using natural predators to control pests. Host resistance is not a problem.
•
Expensive to find biological control agents. Can never eradicate a pest completely.
•
•
•
Advantage : Save great quantities of food from pests and diseases before harvest or during storage.
harvest and storage - the critical period that determines a farmer’s income reliability of insecticides ensures that the quantities of food that is harvested and stored is maintained at the most maximum.
•
Choice Made : INSECTICIDES
Advantage : Increase crop yield.
•
a variety of insecticides to choose from on the market, such as DDT, malation and furadan able to make a choice as to the most effective at the most affordable also increase their profit margin.
•
•
useful insects that help pollination and pest control, such as butterflies, bees and ladybugs. can be resolved by spraying the insecticides after pollination has occurred and when plants are in bud.
•
Disadvantage : Kills useful insects.
Choice Made : INSECTICIDES
•
can easily be reduced by using the insecticides which are lowest in the toxicity range
Disadvantage : Adverse effects on wildlife for many years to come.
Advantage : Save great quantities of food from pests and diseases before harvest or during storage. Choice Made : INSECTICIDES
Disadvantage : Kills useful insects.
Advantage : Increase crop yield.
Disadvantage : Adverse effects on wildlife for many years to come.
Methods Insecticides
•
Advantages Save great