Author Archive: Felix.Weber

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The Power of Soil Testing

Today’s high crop yields are demanding more from our soils than ever before. Modern genetics and improved crop management through practices like 4R are driving better nutrient use efficiency and returns. However, with big yields comes bigger crop removals, and basing 2021 crop needs on historical averages may not be enough. Soil test surveys in Eastern Canada have shown soil test P & K levels have moved declined particularly for potash. (http://b.link/yb67h) Soil test surveys in Western Canada reveal significant declines in soil test P levels in many areas

The impact high yields have on succeeding crops will depend on the current state of soil test values, and the variability in test values across a field.  High field averages don’t reveal problem areas with an imbalance or below critical level; limiting yield. Felix Weber, Ag Business & Crop, puts it this way “Fertilizing without consistent soil testing is like driving [...]

Organic Crop Rotations require Long term Fertility Plans

Organic cropping systems are designed with the goal of maintaining nutrients in organic matter reservoirs and in bioavailable forms over the cropping cycle through a holistic approach. Organic growers starting out or newer agronomic advisors can gain a better understanding of fertility planning and understanding of how crop rotation effects soil fertility in this SARE article: https://bit.ly/2VWWDgN
In planning organic crop fertility, in addition to looking at removal and input each season and over the crop cycle, it is necessary to know what the soil reserves are, to create a fertility plan to feed, build ,maintain, monitor the soil  nutrient status.

Practical Measures of Soil Health, How Can Crop Advisors Use the Data?

 

Soil health is the foundation of any farm. Physical, biological and chemical soil properties all interact in influencing soil health, so measuring soil health is never related to a single measure. There’s a rapidly growing list of tests that many soil test labs now offer.  However, the question remains, which test(s) do you need, and how to use the results. A recent webinar Practical Measures of Soil Health, sponsored by Walton Family foundation presented current understanding of available measures and the complexities of measuring soil health. Several key points in the webinar

• Microbial species are strongly influenced by physical, biological and chemical properties. The same soil in neighboring fields can have vastly different microbial communities.
• Respiration from measures like Haney or Cornell test are direct measure of microbial activity, and are related to soil organic carbon [...]

Higher Yields Driving Nutrient Removal Budgets Since 1990, canola yields have increased by 1.38 bu./ac./yr., corn yields by 1.8 bu./ac/yr. and soybeans by more than 0.45 bu./ac./yr. Producers in southern Alberta are reporting their highest canola average yields, as are Ontario soybean growers. Agronomists and the International Plant Institute (IPNI) have warned about seeing a steady decline in soil test nutrients, including phosphorus (P), potassium (K) and sulphur. A number of media articles recently have centered around whether farmers are adjusting their fertility plans to current realities of crop removal and declining soil test levels. The Farmtario article 'High Yields Lead to greater Nutrient Removal’ makes a key point that in years of high yields, adjusting fertilizing plans to the 5-year average may not be enough. (https://bit.ly/33RNcni ).  Our view is that growers can be surprised by the high removal rates associated with big yields

Promoting Your Precision Sampling Services

Quality crop fertility recommendations start in the field with collecting quality soil samples. Getting customers to value your precision soil sampling service can be a challenge in a world when ‘quick and cheap’ drives ‘value’. Crop input manufacturers educate & demonstrate the value of a new technology through field trials.  The same approach can be taken with precision soil sampling by conducting a soil sampling field trial/research project to demonstrate the value of accurate, precision soil sampling.  The project could serve to as good topic for summer field days, winter meetings and in training students/staff.
Project ideas:

• Effect of soil consistent sampling depth: Comparing samples of standard soil depth 0-6” to 0-5”, 0-8”, etc. Our experience has shown how even a 1-inch difference can affect results
• Value of Site-specific sampling: Sample in a specific area (per sample) you can go [...]

Can Soil Health Testing be Used for Making Fertilizer Rec’s?

The Haney test, designed to evaluate soil health indicators like soil respiration, water-soluble carbon and organic nitrogen was evaluated recently by University of Minnesota for generating corn fertilizer recommendations. Read the report here: http://b.link/c5dgy