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Category Posts for Kirkpatrick, Terry

29
Aug
2014
Soybean sudden death syndrome may indicate nematode problem
Author: Terry Kirkpatrick, Professor - Plant Pathology

The Sudden Death Syndrome (SDS) in your soybean field may be trying to tell you something!  The increased incidence in SDS statewide this year is due to a lot of factors, including the cool, wet summer we have had.  However, keep in mind that although SDS is caused by the soil borne fungal pathogen Fusarium […]

13
Aug
2014
Soybean nematode survey opportunity: Check for the hidden enemy of soybean
Author: Terry Kirkpatrick, Professor - Plant Pathology

Nematodes have been called the “hidden enemy” of soybean because these soilborne, microscopic root pathogens can go unnoticed in a field until yield losses become severe. The number of soybean fields showing visible damage due to nematodes has increased dramatically during the last few years statewide, and most of the time the root-knot nematode is […]

13
Aug
2014
Soybean disease alert: stem canker showing up
Author: Terry Kirkpatrick, Professor - Plant Pathology

The 2014 season may be, as Yogi Berra said, déjà vu all over again. Although southern soybean stem canker has been a rare occurrence in Arkansas for the past several years, the disease is still around. Last week a few plants with stem canker were found in a research plot on the Rice Research and […]

04
Aug
2014
Soybean disease profile: Phytophthora root and stem rot
Author: Terry Kirkpatrick, Professor - Plant Pathology

Phytophthora root and stem rot (PRSR) of soybean is a disease that can be a significant problem in wet years such as we are having this year.  Cooler-than-normal temperatures, frequent rainfall, and poorly-drained soil favor this disease.  PRSR is caused by the oomycete Phytophthora sojae, a soilborne plant pathogen that can survive for years in […]

05
Mar
2014
Soybean growers: Keep nematodes in mind
Author: Terry Kirkpatrick, Professor - Plant Pathology

Nematodes are common pests in many soybean fields in the state.  Sometimes called the “hidden enemy”, root-knot, soybean cyst, and reniform nematodes can be costly if they are ignored.  Because they are not visible, damage caused by nematodes  is often overlooked.  Nematode are microscopic root-parasites, and the symptoms they cause, including plant stunting, yellowing of […]

03
Oct
2013
Know your soybean diseases: Don’t be fooled by doppelgangers
Author: Terry Kirkpatrick, Professor - Plant Pathology

Several soilborne soybean diseases occur in Arkansas that may look somewhat similar upon casual observation.  It is important, however, to accurately distinguish which is which because yield loss potential, as well as disease management and prevention may be radically different.  The following is a comparison of symptoms associated with southern soybean stem canker (SC), sudden […]

22
Jan
2013
Need help selecting soybean varieties? 2012 Soybean Updates now available
Author: Jeremy Ross, Extension Agronomist - Soybeans

Each year, numerous soybean varieties are commercially available to growers in Arkansas. However, only a limited number of soybean varieties have been tested in Arkansas at April plantings. Yield performance in early (April) plantings varies according to location, adaptability to soils, relative maturity, lodging, shattering potential, disease and nematode resistance, as well as herbicide and […]

29
Jul
2011
Reminder: Request For Fusarium Wilt Samples
Author: Terry Kirkpatrick, Professor - Plant Pathology

Fusarium Wilt of Cotton. Fusarium wilt (FW) is more visible this summer than it has been for several years in Arkansas cotton fields.   FW is a disease of the vascular system caused by a soilborne fungal pathogen (Fusarium oxysporum) that survives for long periods (several years) in cotton fields.   This disease may be responsible for […]

20
Jul
2011
Alert: Bacterial Blight of Cotton Found in Arkansas
Author: Terry Kirkpatrick, Professor - Plant Pathology

Bacterial blight, a disease that has not been of economic significance in Arkansas for years, has been detected in numerous cotton fields in northeastern Arkansas, as well as in some fields in the southeastern part of the state and some areas of Mississippi over the last two weeks.  The disease has been confirmed in Desha […]

12
Jul
2011
Attention: Request for Fusarium Wilt Samples
Author: Terry Kirkpatrick, Professor - Plant Pathology

Fusarium Wilt of Cotton. Fusarium wilt (FW) is more visible this summer than it has been for several years in Arkansas cotton fields.   FW is a disease of the vascular system caused by a soilborne fungal pathogen (Fusarium oxysporum) that survives for long periods (several years) in cotton fields.   This disease may be responsible for […]