Hollow-tine cultivation and solid-tine spiking both failed to alleviate summer bentgrass decline

creeping bentgrass putting green treatment with solid-tine spiking A late July solid-tine spiking treatment of a creeping bentgrass green in Hokkaido, Japan

How’s this for a lede?

“Hollow-tine coring and solid-tine spiking practices may not alleviate creeping bentgrass summer decline.”

You’ll read that at the start of Creeping bentgrass summer decline as influenced by climatic conditions and cultural practices, the new article by Miller and Brotherton describing their measurements on Penn A-1 creeping bentgrass over two years. The cultural practice treatments were varying levels of nitrogen rate, soil water content, and coring and spiking.

This experiment was conducted in North Carolina, during the summers of 2009 and 2010. There were four coring treatments and two spiking treatments. Coring was 9.5 mm diameter tines twice a year and three times a year, 6.5 mm tines twice a year, and no coring. Spiking treatments were bayonet tines twice a month from June through mid-September, and no spiking. Here are a couple quotes from the article about the effect of cultivation.

“[turf quality declined] within 3–4 weeks following core aerification with the greatest reduction in turfgrass quality in plots cultivated with the largest diameter tines … Besides those few dates, core cultivation had no effect on turfgrass quality.”

“There were no differences related to turfgrass quality and summer spiking.”

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Micah Woods
Micah Woods

Scientist, author, consultant, and founder of the Asian Turfgrass Center