A correspondent wrote with a question about soil biology for controlling organics, adding compost tea to feed beneficial bacteria, and etc.
There are two articles that I recommend as an introduction to this topic, both by David Zuberer.
Regular readers of this blog will be familar with some previous attempts to estimate the N mineralization in turfgrass soils. There was this from 2010, which I wrote about in 2015 saying “I wouldn’t explain it this way again.
It’s always a good idea to know what the soil temperature is. One can measure it, or one can be confident that the average daily soil temperature close to the surface (5 cm, or 2 inch depth) is higher than the daily low temperature, and lower than the daily high temperature.
Irrigation water quality, salinity, gypsum, and sodium—I’m not even going to mention the problems that bicarbonate doesn’t cause—are topics that are sure to stir up some discussion. I shared a couple old blog posts last week, related to sodium, sodicity, and gypsum, and sure enough, there were all kinds of responses, with much of it taking a tangent from what the blog posts were about.
Jason Haines has been sharing some ideas on his Turf Hacker blog, and one that I think is especially interesting is the idea that one can precisely match the topdressing sand quantity to the growth of the grass.
There is an interesting article about carbon by Bryan G. and Tyler J. Hopkins in the latest issue of Crops & Soils magazine. Here’s a quick summary, put together with a series of quotes from the article.