7.1 - Lake Winnipeg Algae

Question 1

What are the three key problems related to lake Winnipeg nutrient levels?

Answer 1

• Excess P
• Agricultural & urban P, contribute to the problem
• Playing the blame game

Question 2

What are processes of agricultural P loss?

Answer 2

Most P loss from agriculture land in Prairies is dissolved P during snowmelt

Question 3

What are three 2 types of practices to reduce agricultural P loss?

Answer 3

1. Source BMPs (Nutrient Management)
2. Transport BMPs (Soil & Water Management)

Question 4

How does Source BMPs aim to reduce agricultural P loss?

Answer 4

• Aim for P balance
• Avoid high soil test P
• Avoid winter application of fertilizer and manure
• Avoid fall broadcast P fertilizer without incorporation

Question 5

What is a Transport BMP?

Answer 5

A practice that reduces the movement of substances from agricultural activities that could harm surface and ground water or other resources

Question 6

Careful selection and management of transport BMPs is required to avoid __________ P losses… partly because vegetation is sometimes a P source, instead of a P sink.

Answer 6

increasing

Question 7

BMPs require _________ investigation and validation to ensure that they actually work here.

Answer 7

local

Question 8

We should aim for improving overall environmental health, being careful to consider all the _______________ and ___________ of beneficial management practices.

Answer 8

co-benefits and tradeoffs

Question 9

What two things should be done to ensure environmental health is maintained?

Answer 9

• Diagnose the correct cause
• Prescribe the correct cure

Question 10

True or False: No BMP, including conservation tillage, perennial forage or vegetated buffers is a cure-all, for all environmental issues and situations

Answer 10

True