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Tag Archives Environmental soil science

This slide cabinet holds 5,000 slides and allows me to view 120 at a time. Any slide can be located in a flash if a good filing system is in place.
Columns, Crops

Exhibit 1: Weather cycles — Willowbunch Lake

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Over the course of 30+ years at the University of Saskatchewan I collected about 5,000 35 mm colour slides. Many were taken by me while pounding pavement but I also “inherited” slides from folks who retired or moved. I also have a slide cabinet at home with hundreds of slides from junkets to Tanzania, Swaziland […] Read more
Native grass prairies and sunset
Crops, Features, Forages

Forages and grasses for marginal land

Permanent cover crops can increase fertility in "problem soils" over time

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Jeff Schoenau has a word for agricultural areas currently in annual production that fail to deliver a return on expensive inputs: “heartache land.” It’s better known as “marginal” land, and it can be defined as land with soil that has limitations including poor water-holding capacity and water availability to roots due to sandy texture or […] Read more
This is a water well map for part of Tp 29 R13 W3, west of Milden, Sask. Legend: The “A”s next to well locations indicate that these wells date from before the survey, pre-1935. For the 2 wells that show a number instead of an A, the 74 and 70 indicate the year the well was dug. Next to the A or year, the top number shows the depth to water in the well (in feet); the bottom number shows the depth of the well (in feet). Where the circle is black, the well is assumed to be located next to buildings. Clear circles indicate that the well location is unknown within the quarter section.
Columns, Forages

The “other” moisture

Surface moisture is easy to measure: Moisture from the water table is another story

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In making soil moisture maps as of freeze up the past few wet years, I have come to realize that we should have maps of areas where the surface moisture that we grow crops with has little or no connection to the water table. This piece adds a bit to that idea. In the 1980s […] Read more
This graphic, from a University of Minnesota Extension Bulletin, shows some common designs for tile drainage.
Columns, Crops

Trying tile drainage on your farm

There's information out there. Do your homework before starting tile drainage

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I am not an engineer and will not give recipes for pipe size, spacing or equipment. Rather, I’ll look at the principles and steps a farmer should take before investing big bucks in tiles. Tile drainage is not a new technology. Many of the better soils of the world are on flat, low lying, high […] Read more
Tile drainage in progress south of Melfort, October 2014. The water table was high and tiles were running as soon as installed. The drain outlet is Melfort Creek. This project is on the Alan Hurd farm. Mark Gordon of Agri-Trend provided the soil EC mapping of the site and Stu Brandt of NARF (Northeast Agricultural Research Foundation) installed the observation wells and is monitoring the site.
Columns, Crops

Soil salinity: causes, cures, coping

After recent wet years, we’re seeing salinity again. Learn to cure it or cope with it

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A few years back we predicted that the super wet years would lead to a marked increase in soil salinity. It is now happening. In this piece I am not going to talk about Solonetzic soils or true Alkali (high pH , low salts) soils. I’m talking only about saline soils — soils that have […] Read more
Zero tillage can increase P loss
Crops, Features

Zero tillage can increase P loss

Phosphorus can drain off the soil during snowmelt. Periodic tillage may reduce the losses

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The latest soil-management recommendation will come as a surprise: In some cases, producers should consider periodic tillage to reduce the risk of phosphorus (P) loss from conservation tillage systems. According to Don Flaten, a professor in the University of Manitoba’s Department of Soil Science, zero tillage actually increases P loading from soils to surface water […] Read more
Install the well. This photo shows a well installed with a cap on top — just loose of course. This was a very clean 11 foot hole so I had to set the top with natural clay from auger leavings.
Columns, Crops

DIY: Installing water table wells

With water in the soil, we can survive on little rain. Learn how to measure what you have

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2015 will go into the books as a very different kind of growing season. In central Saskatchewan we started off with soil completely full of water after a big dump of snow on April 26. My rain gauges showed 2.5 inches of water when it all melted. And then Mother Nature turned of the tap […] Read more

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