The top 10 posts of 2020
These posts had the most views in 2020. Here they are, on all kinds of topics.
 February, Soil organic matter: a bullet list, summarizing key points related to its measurement and its management at the soil surface.
 February, Before your next calcium app, read this which points out that irrigation water contains, on average, 7 times more Ca than the grass uses.
 July, Hollow-tine cultivation and solid-tine spiking both failed to alleviate summer bentgrass decline which was a surprise to a lot of people.
 May, Putting green organic matter by depth in the soil goes into more detail about this topic.
 May, Algae, sand, and phosphorus shows how P and sand surfaces don’t mix for long.
 April, When grass grows more, it makes more roots, which I think is useful to remember if one wants more roots.
 April, Surface hardness of eight grass species on putting greens in one simple chart.
 February, Quacks and Suckers and let’s hope we are neither.
 May, Sand topdressing by growth rate and clipping volume which proposes adding 1 cm3 of sand for every 1 cm3 of clipping volume. That works out to 1 mm of sand for every 1 L/m2 of clippings.
 April, Four tools to measure surface hardness describes the 4 tools and discusses their advantages and drawbacks.
Those were the top 10 this year. Thanks to everyone for reading.
The top posts from previous years are at these links:
Top 10 posts of 2019 has OM246, beneficial microbes, core aerating (or not), post-rain growth flushes, 10 ton vibratory rollers, ball bounce after 7 consecutive rainy days, and Turf Twitter.
Top 10 posts of 2018 about greenkeeping, an MLSN movie and cheat sheet, surprisingly good playing conditions, clipping volume, dollar spot, reactive vs. proactive, autonomous mowers, and carbon fertilizer.
Top 10 posts of 2017 about N in rain, two posts about fertilizer cost, green speed by species, Si and green speed, sand topdressing and grass growth, awesome things by other people, fertilizer and roots, and one on K and winter diseases.
Top 10 posts of 2016 about OM, coring or not, the most comoon oxymoron in turf, roots, winter traffic, ET daily or monthly, greenhouse gas emissions from golf courses, and ethical purchasing.
Top 10 posts of 2015 about fertilizer, green speed, soil tests, wind at St. Andrews, the 1/3 rule of mowing, U.S. Open at Chambers Bay, and foliar applications.
Top 10 posts of 2014 about seasonal N use, control of turf diseases, an anecdote about ammonium sulfate, salesmen suggesting calcium, cool-season grass in the tropics, irrigation, and soil moisture.
Top 5 posts of 2013 about summertime syringing to cool bentgrass, nutrient requirements, and potassium.
Top 5 posts of 2012 about five articles every greenkeeper should read, 1 minute on fertilizer, the real price of fertilizer, and the imaginary problem of calcium deficiency.
Top 5 posts of 2011 about modifying fairway conditions in Thailand, sandcapping or topdressing, weeds in Malaysia, and turfgrass potassium requirements.
Top 5 posts of 2010 about zoysiagrass fertilizer, the China Golf Show, grass selection and manilagrass, Guidelines for Tropical Turfgrass Installation and Management, and turfgrass performance data at the Open Championship.
Top 5 posts of 2009 about mowing patterns and grass color, core aeration, salt for weed control, seeded seashore paspalum, and turfgrass in Dubai.