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Old 09-28-2012, 08:18 AM
Smallaxe Smallaxe is online now
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Join Date: May 2007
Location: Central Wisconsin
Posts: 9,805
Quote:
Originally Posted by Smallaxe View Post
Here is a CentroWisco site that has a couple of cautionary remarks about early Spring N apps... I'll find some more...

http://outagamie.uwex.edu/files/2010...are-Tips-2.pdf

... Never fertilize in April through early May; you will be fertilizing the weeds that are starting to sprout instead of the lawn

... Returning grass clippings to the turf does not contribute to thatch. Early spring fertilization (April & May), fertilizing four times a year, over watering and pesticide use contributes to thatch. Core aeration in the months of May or September (when the turf is actively growing) reduces thatch build-up. Excess thatch cultures several turf diseases.
Keep in mind that this area is a couple months ahead of CentroWisco, so the definitions of Winter and Early Spring are @ different months... enjoy...

http://turfdisease.osu.edu/turf-dise...-fertilization

"... root and shoot activity and plant respiration rates increase during the late winter and early spring, plant carbohydrate content generally decreases. This decline may be quite significant when the turf receives an early season (February-April) nitrogen application, as compared to grass that has not been fertilized since the previous fall. The rapid decline occurs because carbohydrates are needed to support the increased shoot growth resulting from nitrogen applications made early in the season. Conversely, the more slowly-growing, late-season-fertilized turfgrass plants may possess a larger carbohydrate pool during the spring period. As will be discussed later, the process of spring root production can benefit from this greater concentration of carbohydrates from a late-season application. ...

...The true advantage that late-season fertilization provides to turfgrass root growth is realized during the following spring. It has been shown that the root growth of turf fertilized during the late-winter/early spring declines soon after nitrogen application (3 & 5). Conversely, turf fertilized using the late- season concept becomes green early and rapidly, without the need for an early spring nitrogen application, and root growth continues at a maximum rate. It appears that the excessive shoot growth encouraged by early spring nitrogen applications utilizes carbohydrates that may otherwise be used for growing roots ..."


It would actually be informative to read that entire section about root growth, as I only highlighted the relevant point...
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Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
,,, I wonder what does...
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