ISSN:
1435-0653
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Agrostis palustris Huds.) green growing on a U.S. Golf Association (USGA) rootzone. Thatch control treatments were vertical mowing (VM 4 and 8/yr), coring (core 4/yr), wetting agent (Wet Ag 7/yr), extra K (4/yr), lime (L 4/yr) and various combinations, and interactions of these with topdressing (Tpd 3 and 6/yr). Rootzone nutrients determined were Ca, K, and P and rootzone pH levels were determined. Thatch measurements were determined with a rapid surface sod compression instrument termed the Thatchmeter II. Treatments and measurements were conducted for 6 yr with results reported for the last 3 yr. Lowest non-significant levels of thatch resulted following VM 4 or 8/yr and VM + coring. Tpd 3 or 6/yr also effectively prevented thatch buildup. When combining mechanical and chemical methods with Tpd, lowest non-significant levels of thatch resulted following VM 4 or 8/yr, VM + coring, and VM + L, all combined with Tpd 6/yr. Extra K (VM + K + L, K + L, K) and Wet Ag resulted in increased thatch. Lime did not influence thatch depth. Loss of rootzone K was 94% and increased with mechanical and chemical treatments. Loss of rootzone P was 86% but extra K and L treatments reduced P loss, especially under pH 7.3 following L treatments. Loss of rootzone Ca was 56% but L extra K treatments under pH 7.3 reduced this loss.
Type of Medium:
Electronic Resource
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