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Calcium Product 98G

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Interaction of zinc and calcium

Zinc is an extremely important micronutrient that has many roles in plant health and deficiencies are widespread, even if unknown to the grower. Recommendations for zinc levels in soils are dependent on crop, soil type, pH and other nutrient status and can range depending on which institution is offering the recommendation. Generally speaking, below 1ppm on your soil test indicates that you should apply some type of zinc fertilizer. However, growers should pay attention to their soil tests and site-specific factors, because while 1ppm of zinc in one soil type may be sufficient, 4ppm in another soil with zinc antagonists may be a better target. Deficiency symptoms are generally seen in new growth, early in the life cycle of the plant and result in stunted growth, shortened, sometimes split internodes and discoloration of new leaves—the color of which can vary depending on plant species. Internally, zinc deficiency can result in…
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More sulfur updates...

While reading the 2012 Annual Farm Progress Reports from Iowa State University's Northern Research Farm in Kanawha, IA, we discovered another trial investigating sulfur fertilization via gypsum on corn. The impetus for the study was the same as the Iowa Soybean Association's; sulfur deficiencies are becoming widespread in both corn and alfalfa in Iowa and many other midwestern states. The experiment was performed by Dr. John Sawyer and David Rueber of Iowa State University. Four rates of sulfur (5, 10, 20, 40 lbs/A) were applied to two different soils—one with low organic matter and a slope, and one with higher OM and less slope—as was a non-treated control (no sulfur) to compare differences throughout 2011 and 2012. These rates were applied to corn in 2011 and soybeans in 2012. The 2011 plots were planted to corn after soybean in 2011 and planted to corn again in 2012 to test residual…
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Crop Nutrient Deficiency App

Hard to believe its been almost 2 years since we first did a blog on Smart phones apps for farmers. We have another addition: The Crop Nutrient Deficiency Photo Library for iPhone and iPad by IPNI. This app is a comprehensive collection of crop nutrient deficiency photos. A range of nutrient deficiency examples are provided for 14 prominent crops. Text and diagrammatic descriptions are also provided. While we think this app is great and can help you diagnose a problem, we highly suggest soil testing and making sure you are fertilizing for the most deficient nutrients. Did you know that some nutrients can take up to two weeks before a visible deficiency occurs? It can take another two weeks to correct the deficiency. That whole time you are losing yield you can never recover. Even worse you can have nutrient deficiency that are not severe enough to show visual signs.…
Read more...

Crop Nutrient Deficiency App

Hard to believe its been almost 2 years since we first did a blog on Smart phones apps for farmers. We have another addition: The Crop Nutrient Deficiency Photo Library for iPhone and iPad by IPNI. This app is a comprehensive collection of crop nutrient deficiency photos. A range of nutrient deficiency examples are provided for 14 prominent crops. Text and diagrammatic descriptions are also provided. While we think this app is great and can help you diagnose a problem, we highly suggest soil testing and making sure you are fertilizing for the most deficient nutrients. Did you know that some nutrients can take up to two weeks before a visible deficiency occurs? It can take another two weeks to correct the deficiency. That whole time you are losing yield you can never recover. Even worse you can have nutrient deficiency that are not severe enough to show visual signs.…
Read more...

More sulfur updates...

While reading the 2012 Annual Farm Progress Reports from Iowa State University’s Northern Research Farm in Kanawha, IA, we discovered another trial investigating sulfur fertilization via gypsum on corn. The impetus for the study was the same as the Iowa Soybean Association’s; sulfur deficiencies are becoming widespread in both corn and alfalfa in Iowa and many other midwestern states. The experiment was performed by Dr. John Sawyer and David Rueber of Iowa State University. Four rates of sulfur (5, 10, 20, 40 lbs/A) were applied to two different soils—one with low organic matter and a slope, and one with higher OM and less slope—as was a non-treated control (no sulfur) to compare differences throughout 2011 and 2012. These rates were applied to corn in 2011 and soybeans in 2012. The 2011 plots were planted to corn after soybean in 2011 and planted to corn again in 2012 to test residual…
Read more...
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