Topics: Ask the Agronomist
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I recently bought into a contract hog operation and will be using the hog manure on my corn crops. How will my fertilizer needs be met by using manure and is it a good idea to still use a starter/pop-up next spring? I currently apply five gallons of 10-34-0 using a 2X2.
Dale Leikam, Ph.D.
The amount of nutrient that will be provided to your corn crop will vary depending on the nutrient analysis of the manure used (ammonium-nitrate, organic nitrogen, phosphorus, potassium, sulfur) and the application time, rate, uniformity and method (broadcast vs. broadcast/incorporate vs. subsurface). In other words, there are many factors that determine the amount of nutrient… Read Full Answer
http://yieldsigns.com/ask-the-agronomist/article/hog-manure-on-corn-cropsEmail Print
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What micronutrient deficiencies are common in Texas cotton production?
The primary micronutrient deficiency to cotton production all across Texas is zinc. Zinc levels are fairly low (less than 0.5 PPM) in most soils, especially in West Texas. Cotton responds very favorably to foliar zinc applications, which is usually 0.05-0.075 #zinc/acre (0.5-0.75 pints of 10% zinc/acre).
Applications of zinc solutions mixed with insecticides for early season thrips… Read Full Answer
http://yieldsigns.com/ask-the-agronomist/article/Texas-cotton-production-zincEmail Print
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What soil properties have the greatest impact on nutrient availability?
The soil chemical properties have a great impact on phosphorus and nitrogen availability. Phosphorus availability is optimal at pH level 6.5-7.0. At levels of more than 7.5, availability declines drastically due to excessive free calcium and magnesium. At pH levels below 6.2, soluble iron and aluminum greatly reduce phosphorus availability.
Nitrogen availability is affected by… Read Full Answer
http://yieldsigns.com/ask-the-agronomist/article/nutrient-availability-and-soil-chemical-propertiesEmail Print
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