Category Archives: Soil

Visual Symptoms: A Handy Tool in Identifying Nutrient Deficiency in Row Crops

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Generally, a nutrient deficiency occurs as a result of low soil nutrient levels. However, prevailing environmental conditions, soil properties, and growth conditions may restrict nutrient uptake and induce deficiencies in crops even if soil nutrient levels are deemed sufficient for optimum yield. For example, low or high soil pH, soil compaction, and excessively wet or dry soil may prevent nutrient uptake. A handy diagnostic tool to identify nutrient deficiency in crops is via visual symptoms. In some instances, this tool may not provide a definite diagnosis of the nutrient status of the plant. Keep in mind that there are other conditions that are cable of inducing symptoms that closely resemble those of nutrient deficiencies. Visual symptoms should be corroborated with tissue and/or soil testing. Adequate knowledge of visual symptoms and tissue testing may help guide corrective actions in-season or preventive action in the following season to avoid yield loss.

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Virtual Milan No-till Field Day … Available Now!

Follow the link below to experience the 2020 Milan No-till Field Day at your own pace! You can watch an entire tour by clicking on its name, or just one presentation by clicking on a specific title.

Please note, all links will open in a new tab. Closed captions are available by clicking the “CC” button on the right side of the video’s play bar.

Research Tours

 

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Soil fertility and nutrient management practices survey

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I am Nutifafa Adotey, University of Tennessee’s Soil and Nutrient Management Extension Specialist. A thriving and productive land for subsequent generation is of uttermost importance to every farmer, rancher, or grower. This survey is designed to gather brief but valuable information on some basic production practices in Tennessee. This information will help with the accurate delivery of innovations or interventions on soil fertility that caters to the needs of producers in Tennessee.

Kindly take a few minutes to fill out this survey if you are a producer or share this information with other producers in Tennessee. The survey can also be taken on mobile devices such as the smartphone or tablet. I have contracted with QuestionPro, an independent research firm, to field your confidential survey responses. I would appreciate your feedback in our online survey. Your survey responses will remain confidential and secure. Data will only be used to help build a robust soil and nutrient management extension and research program.

The survey is available at https://utk.questionpro.com/t/AQQL2ZgzJA

I appreciate your trust and look forward to serving you in the future.

Please contact nadotey@utk.edu with any questions.

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Minimizing Nitrogen Loss in Row Crop Production Using Nitrogen Stabilizers

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Nitrogen (N) fertilization is a costly operation for most row crop producers. Consequently, it is important to implement best management practices (BMP) available for N fertilizer application in order to be profitable. The problem with N fertilizers is their potential to be lost through different N loss pathways: ammonia volatilization, denitrification, and leaching. Spring of 2020 has been generally wet and if this weather pattern continues, farmers should have no problem receiving incorporating rain, minimizing risk for ammonia volatilization from surface-applied at planting N. In TN, most row crop producers split-apply N, with the majority of N fertilizer applied as a sidedress which is closer to the period of high N demand. Since a large portion of N is applied as sidedress, there is the greatest risk for N loss depending on management practice as well as soil and environmental conditions. Continued wet weather might support the use of nitrification inhibitor type products in wetter soils. This blog addresses N stabilizers as a tool to minimize the risk of N loss and ensure that N is available for crops during the period of high demand. Continue reading

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Corn and Cotton Producers’ Prevented Planting Decision

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Federal crop insurance programs have a prevented planting provision that can protect producers from the financial losses and risks associated with not being able to plant the intended crop within the desired planting period. Revenue Protection, Revenue Protection with Harvest Price Exclusion, Yield Protection, and Area Risk Protection insurance policies pay indemnities if producers were unable to plant the insured crop by a designated final planting date or within any applicable late planting period due to natural causes, typically drought or excess moisture. This post highlights several components of those provisions and provides a few examples.  

Kevin Adkins, Graduate Research Assistant, Department of Agricultural and Resource Economics, University of Tennessee

**Christopher N. Boyer, Associate Professor, Department of Agricultural and Resource Economics, University of Tennessee 302-I Morgan Hall Knoxville, TN 37996 Phone: 865-974-7468 Email: cboyer3@utk.edu **Corresponding author Continue reading

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Making the cotton replant decision

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Adverse conditions experienced during or after cotton planting can negatively impact cotton seedlings and result in seedling death.  If severe, stresses can reduce stands to unprofitable yield potentials.  Unfortunately, cool nights, excessive rainfall and marginal seed quality from some seed lots have increased reports of failed stands.  Determining whether to accept or replant a marginal stand of cotton is a particularly challenging decision since many factors must be considered. The purpose of this post is to highlight a few factors to consider while making the replant decision. Continue reading

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