Impacts of agriculture:
	Agriculture within a watershed can contribute to nutrient loading in a lake.  Plowed fields and        livestock grazing areas are potential sources of erosion, which can carry sediments and nutrients to a      lake
	fertilizers that carry phosphorus
	Manure storage:
	Manure spreading can lead to nutrient loading, especially in winter when the ground is frozen and      nutrients do not have a chance to filter into the soil
	To reduce impacts:
	-To help prevent these problems the state has passed zoning ordinances, which prohibit the storage      of manure within 100 ft of a lake or river (MDEP 1990).  Another solution is to avoid spreading        manure in the winter
	contour cultivation: plowing along the contours of land rather than up and down it, reduces runoff      towards lake
	Stubble mulching: retention of stubble in seedbed
	Minimizeing tillage: tilling stirs up soils and sediments, minimize amount neccesary