Gardening Q&A March 17, 2002

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GARDENING Q&A
by Rett Davis
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Gardening Q&A by Rett Davis appears in Alamance County's daily newspaper, The Burlington Times-News, every Sunday in the Accent section. Each week's installment is posted to this website, beginning with January 1998. Scroll to the bottom of this page to navigate to other Gardening Q&As. Please contact Rett via e-mail with questions or comments in regard to this column.

March 17, 2002

fertilizer bag Question:
I keep hearing that I cannot lime and fertilize my lawn at the same time. Do they really cancel out each other if they are applied on the same day?

Answer:
I can't tell you how many times I am asked this question. This myth is perpetuated each spring from several different sources. However, there is no truth to this statement. I have checked with our soil fertility specialists and even my soils professor in college just to verify the lack of validity to this claim. There is no basis for these claims. Therefore I would not hesitate to apply these products back to back in the same day.

Question:
I sowed fescue grass seed in February and none of it has germinated. Have the recent cold snaps killed the seed and should I reseed again?

Answer:
Your seed is just fine. It is just that the temperature has not been conducive for fescue to germinate. You will not see germination until late March and early April. By then the soil and air temperature will encourage the seed to sprout.

Question:
I applied lime all over my back yard to kill moss last fall. It is not worked yet. Should I reapply this spring and how much is needed to control moss?

Answer:
Lime will not kill moss. There is nothing in lime that has these properties. To get rid of moss you must address several issues that include too much shade and poor soil drainage. Until these are corrected the moss will continue to grow and thrive. Moss tends to grow where grass will not. Too much money is spent on seed and fertilizer to grow grass where it is too shady. Often times the grass dies or thins out within the first year due to lack of light. If you truly want to kill the moss you can use copper sulfate (bluestone) at the rate of 1 ounce per gallon of water.

Question:
Last year we had irish potatoes that were very rough on the surface. Although they were edible, they were not very appetizing to look at. Should we change varieties?

potato 
scab
Answer:
The condition you are describing is called 'potato scab'. This disease is not controlled with chemicals but with a change in cultural practices. Do not use last year's potatoes as a source of seed this year. Do not lime the soil where you grow potatoes. Sulfur can be added to the rows and tilled in to reduce the acidity of the soil before planting. The organism that causes this disease has a more difficult time surviving in acid soils. Rotating your potatoes to a new area of the garden will also help. Finally, I would change to a variety of potato that has some resistance to this disease. Choose one or more of the following potato varieties; Atlantic, Norchip, Superior, and Shurchip. These varieties may not be easy to find. Our most popular varieties are Kennebec, Irish Cobbler, Red Pontiac and Yukon Gold. None of which are resistant to potato scab. Therefore it is very important to follow the other steps to control this disease or it will only get worse. For more info on potato scab, click here.

PESTICIDE PICKUP DAY

Once again we are offering free disposal of pesticides. The date is Wednesday, April 24 from 10 am until 2 pm. The N.C. Department of Agriculture will collect all herbicides, insecticides, fungicides, and other pesticides. This is only offered once a year. All farmers, gardeners, and homeowners should take advantage of this opportunity to clean out their sheds and garages. No paint or other chemicals will be accepted. The pickup will be at the Agricultural Building, 209 North Graham Hopedale Road in Burlington.

MONTHLY HERB MEETING

Thymes To-Gather will hold their monthly herb meeting on Tuesday, March 19th at 7 pm in the Agricultural Building, 209 N. Graham- Hopedale Road, Burlington, NC.


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