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Category Posts for Physiology

15
Aug
2014
Soybean research verification program update for August 15, 2014
Author: Chris Grimes, Program Associate - Soybean/Wheat Verification Coordinator

Rainfall was more abundant across the southern SRVP fields this week. Irrigation continues to be top priority at this point in the program and we have terminated irrigation a few fields. Overall, insect and disease pressure was light in the verification fields this week; however we did reach treatment level for frogeye in the Prairie […]

11
Aug
2014
Rice research verification program update for August 11, 2014
Author: Ralph Mazzanti, Rice Research Verification Coordinator

Cloudy conditions and rain showers continue to make their way in the forecast. The overcast weather and below average temperatures have some fields 7-10 days behind the DD-50’s. Heat units are desperately needed in the late planted fields. In some fields uneven heading is making fungicide timing very difficult.  Herbicide drift from Gramoxone has shown […]

11
Aug
2014
Soybean research verification program update for August 8, 2014
Author: Chris Grimes, Program Associate - Soybean/Wheat Verification Coordinator

Rainfall was scattered across the SRVP fields this week. Irrigation continues to be top priority at this point in the program and we have terminated irrigation a few fields. Overall insect and disease pressure was light in the verification fields this week; however we did reach treatment level for bollworms in Clark County and frogeye […]

04
Aug
2014
Rice research verification program update for August 4, 2014
Author: Ralph Mazzanti, Rice Research Verification Coordinator

Lower humidity and temperatures during heading and grain fill should help yield and quality.  The overcast and cooler weather has slowed the progression of the verification fields in some cases.  Some fields tend to be 7-10 days behind while others are right in time with DD-50.   The Jefferson County field was treated 7/15 for […]

31
Jul
2014
Frogeye leaf spot and other diseases picking up in some soybean fields
Author: Travis Faske, Extension Plant Pathologist

Frogeye leaf spot (FLS) has been increasing in activity over the past few weeks in some fields with the highest severity located in central Arkansas. In this area, disease severity has ranged from moderate to severe on highly susceptible soybean varieties (Fig. 1). Alternately, disease severity has remained relatively low in fields planted with resistant […]

23
Jul
2014
Disease alert: Rice blast throughout Arkansas
Author: Yeshi Wamishe, Extension Rice Plant Pathologist

The weather this season is favorable to cause a blast epidemic. Get ahead of the disease! Rice blast pathogen spores can easily move across a field and/or from a field to another by wind. Clay, Randolph, Lawrence, White, Prairie, Lonoke, Woodruff, Monroe and Arkansas Counties have all had reports of rice blast largely on Jupiter followed […]

21
Jul
2014
Rice research verification program update for July 18, 2014
Author: Ralph Mazzanti, Rice Research Verification Coordinator

South Arkansas: The cooler temperatures during heading and grain fill should help yield and quality. On the other hand, rainfall and overcast weather can alter flowering and is a favorable environment for disease.  The Jefferson County field is at ½” internode and was treated for FAW numbering anywhere from 8-25 per sq. ft.  RSB are […]

04
Jul
2014
Soybean research verification program update – July 3, 2014
Author: Chris Grimes, Program Associate - Soybean/Wheat Verification Coordinator

Rainfall and amounts were from .45” to 7” this week on the verification fields. Despite the saturated conditions the beans continue to progress. Insect and disease pressure remains below treatment levels in all the verification fields this week. We are still cleaning up the late planted fields with herbicide applications in preparation for irrigation. County […]

03
Jul
2014
Rice diseases in “underwater” rice
Author: Yeshi Wamishe, Extension Rice Plant Pathologist

Rice fields in some counties are “underwater “due to the excessive rain in the last days of June.  As I drove (07/02/14) in Monroe, Woodruff, and St. Francis Counties, I saw fields of soybean and rice covered with water (Pictures 1, 2, 3, 4).  Information on soybean conditions has been given at http://www.arkansas-crops.com/2014/07/02/flooded-replanting-considerations/. Though not […]

02
Jul
2014
Flooded soybean fields and late replanting considerations
Author: Jeremy Ross, Extension Agronomist - Soybeans

Due to the excessive and record-breaking rainfall that occurred early Sunday morning, many fields in an area covering Prairie, Woodruff, Jackson, Monroe, St. Francis, and Cross Counties have been flooded or are still under water.  Currently, we are estimating that 100,000 acres of soybeans will need to be replanted, with many more soybean fields receiving […]