Tip Of The Day - 8/22/05 - Diagnosing
If you are not applying fertilizer properly, it is usually possible to figure out the problem from the appearance of the turf...
Yellow and slow growth - probably nitrogen deficiency
Grass Turns Bright Green, then Purplish - could be phosphorus deficiency or beginning of cold weather
Yellow - could mean lawn needs more iron
Slow growth, reddish color - needs more calcium which usually only shows up in acidic soil
Stripes in lawn or blotches - probably means the fertilizer is not being spread properly
Brown areas - could be from the use of too much fertilizer