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Category Posts for Physiology

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 […]

01
Jul
2014
Insect update: Sugarcane aphid, fall armyworm, rice water weevil, plant bugs
Author: Gus Lorenz, Extension Entomologist

Grain Sorghum Last Friday we went to Chicot and Ashley County looking for sugarcane aphid. It has been previously found in MS, LA, TX and OK. So, it should be no surprise that we had no trouble finding it. In fact, the first field we checked our new SEREC entomologist, Nick Seiter, found it fairly […]

29
Jun
2014
Rice research verification program update – June 27, 2014
Author: Ralph Mazzanti, Rice Research Verification Coordinator

South Arkansas: The Rice Research Verification fields have progressed very well this past week.  Two fields are at early tiller stage while eight fields are at ½” or beyond internode elongation.  With heat, humidity, overcast clouds and rain, conditions are very favorable for disease.  Sheath blight has been detected but no upward movement at this […]

26
Jun
2014
Rice blast alert: Disease has been reported in Arkansas
Author: Yeshi Wamishe, Extension Rice Plant Pathologist

Blast is one of the devastating diseases of rice. The blast pathogen is air, seed, or residue-borne. Seed and air-borne pathogens can easily move long distances. Air-borne spores usually infect young leaves. Spores from young leaves may infect collars, nodes, and panicles of rice. Sometimes when the first emerged leaves dry and die back, blast […]

20
Jun
2014
Soybean research verification program update for June 20, 2014
Author: Chris Grimes, Program Associate - Soybean/Wheat Verification Coordinator

The fields have really turned around this week. Herbicide applications continue to go out as weather permits. Insect pressure remains below treatment levels in all the verification fields this week. Disease pressure is minimal. We are trying to get the fields cleaned up and ready to start irrigating.  A few of the fields received rainfall […]

09
Jun
2014
Wind Damage in Corn
Author: Jason Kelley, Wheat & Feed Grains Extension Agronomist

Recent storms that have rolled through the state have unfortunately brought high winds with them. I’ve gotten several calls about corn that has snapped and corn that has been blown over. Green snapped corn and corn that has blown over are two different problems, although most of the time you will have both problems in […]