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Browse by Author: Rachel Vann
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2020 Cotton Information

By: Keith Edmisten, Guy Collins, Alan York, David Hardy, Dominic Reisig, Gary Bullen, Lindsey Thiessen, Rachel Vann, Charlie Cahoon, Bill Foote, Derek Washburn

2020 Cotton Information is meant to help growers plan for the coming year and make management decisions based on the unique opportunities and challenges the year might bring.

How Have Foliar Treatments Affected Soybean Yields in North Carolina Trials?

By: Rachel Vann, Jim Dunphy, Lindsey Thiessen, Michael Buffaloe

This publication discusses the trends identified by research on the impacts of foliar fungicides and fertilizers on soybean yields in various environments across North Carolina.

Biomass Production With Legume and Small Grain Cover Crop Mixtures in North Carolina: Research Summary

By: Rachel Vann, Chris Reberg-Horton, Miguel Castillo, Steven Mirsky, Rebecca McGee

This publication discusses a study to compare five winter pea genotypes to crimson clover and hairy vetch for biomass production in mixture with various small grains.

Soybean Sunscald

By: Rachel Vann, Donald Stokes

Sunscald is caused by bright sunlight on a wet leaf after exposure to high temperatures. Symptomology typically appears as rusty discoloration on the underside of leaves. This factsheet describes the symptoms and management of sunscald in soybean in North Carolina.

Soybean Compaction

By: Rachel Vann, Donald Stokes

Soil compaction, caused by field traffic and heavy machinery use, can be a significant issue for soybean production in North Carolina. This factsheet discusses the symptoms and management of soil compaction.

Soybean Hurricane Damage

By: Rachel Vann, Donald Stokes

This factsheet discusses the effect on soybean fields after a hurricane and how to proceed with production after extended rain or a flood.

Soybean Fertilizer Burn

By: Rachel Vann, Donald Stokes

Fertilizer burn can occur to the soybean seed from an in-furrow application and to the foliage from a foliar application. An in-furrow application can cause salt injury or ammonium toxicity to the soybean seed. Fertilizer is somewhat rarely applied to soybeans over-the-crop, however if it is done fertilizer burn can occur depending on source and concentration. This factsheet discusses the symptoms and management of fertilizer burn.

Managing Cereal Rye for Benefits in Cotton and Soybeans

By: Rachel Vann, Charlie Cahoon, Guy Collins

This publication discusses the use of cereal rye as a cover crop in soybeans in cotton to determine the effects on weed suppression and soil moisture retention in relation to yields.

Soybean Deer Damage

By: Rachel Vann, Donald Stokes

This factsheet discusses recognizing and treating soybeans that have been damaged by deer in North Carolina.

Cotton Production with Conservation Tillage

By: Alan York, Keith Edmisten, Guy Collins, Rachel Vann, Alan York, Bill Foote

This publication, chapter 13 of the 2020 Cotton Information handbook, covers the role of conservation tillage as it relates to cotton production.

Soybean Hail Damage

By: Rachel Vann, Donald Stokes

This factsheet discusses how to mitigate hail damage in soybean production in North Carolina.

Nonfoliar Yield Enhancement Products in North Carolina Soybeans

By: Rachel Vann, Jim Dunphy, Lindsey Thiessen, Michael Buffaloe

This publication discusses trends identified in how nonfoliar yield enhancement products affected soybean yield over the past five years across 15 locations in North Carolina.

Challenges with Herbicide Resistance and Value of Cultural Practices in Managing Weeds: Examples from Research in North Carolina

By: Ramon Leon, David Jordan, Katie Jennings, David Monks, Matthew Vann, Loren Fisher, Wesley Everman, Charlie Cahoon, Matt Inman, Chris Reberg-Horton, Rachel Vann, Denis Mahoney, Drew Hare, Alan York

A few weed species in North Carolina have become pervasive across the state and are frequently found in different crops. They form dense populations and reduce yields, making production more challenging. This publication discusses herbicide-resistant biotypes in agronomic and vegetable crops in North Carolina and reviews herbicide resistance management recommendations.

Soybean Crusting

By: Rachel Vann, Donald Stokes

Soil crusting is a problem that can occur after soybean planting before the soybeans have emerged. This factsheet discusses the symptoms and management of soil crusting in North Carolina soybean production.

Soybean Deep Planting

By: Rachel Vann, Donald Stokes

This publication discusses planting depth for soybean producers in North Carolina.

Soybean Cold Damage

By: Rachel Vann, Donald Stokes

Cold damage in soybeans can emerge early or late in the season. This publication describes the symptoms and management of cold damage in soybeans in North Carolina.

Organic Cotton Research in North Carolina

By: Rachel Vann, Kelli Dale, Chris Reberg-Horton

This publication discusses a study that sought to investigate alternatives to sole reliance on mechanical cultivation for weed control in organic cotton production, and to evaluate experimental varieties for use in organic cotton production.

Soybean Lightning Damage

By: Rachel Vann, Donald Stokes

This publication describes the symptoms of a lightning strike in soybeans in North Carolina.