While we have quite a few corn fields beginning to tassel, many more are have a little ways to go. There is a period of about 10-14 days when ears shoots become visible or begin to bulge on the side
Based on calls I have received over the last week and what I am seeing in my own research plots, this is shaping up to be a big year for threecornered alfalfa hoppers
Weekly pheromone trap captures from Northeast, Central and Delta regions of Mississippi are reported. Catches indicate moderate bollworm pressure with very few tobacco budworms and beet armyworms caught during the week of May 19-26. Southwestern corn borer pressure is generally light
This year there will be three insect scout schools provided. Each insect scout school will cover insect pests of cotton, soybeans, and corn. Scout schools are free of charge and open to everyone. Detailed descriptions of pest biology, sampling, and
By now everyone is fully aware that we have been and still are experiencing extremely high levels of thrips in cotton. To date, many fields have been treated with foliar insecticides and several have required repeat applications due to extremely high numbers and frequent re-infestations.
Weekly pheromone trap captures from Northeast, Central and Delta regions of Mississippi are reported. Light to moderate bollworm pressure with very few tobacco budworms and beet armyworms caught during the week of May 12 to 18.
In the last 7 days there have been numerous reports of extremely high thrips numbers infesting cotton fields across the state. Although nearly all cotton has an insecticide seed treatment on the seed, high numbers of adults are overwhelming the seed treatments in many cases.
The reason for this post is to give an update on insect pests that we may be seeing in the near and distant future. First, we had several wheat fields around the Delta that had some fall armyworms. In addition, we are seeing a fair number of fall armyworms in whorl stage corn. I wouldn’t say the numbers we are seeing are anything of great concern, but the numbers are higher than we normally see this time of year. This tells us that fall armyworms are in the environment and capable of moving into rice. As the wheat is drying down, make sure to keep a close eye on field edges, especially those fields adjacent to wheat.
In the last 7 days there have been a few calls coming in about armyworms in wheat. Numbers have ranged from 1–12 per square foot. Mississippi has always used a threshold of 5-6 larvae per square foot through the milk
Over the last 10 days I have had several calls about stink bugs in small corn. There have been some fields treated, however, at this time it has not been widespread. Stink bugs damage small corn by feeding through the
We are beginning to see stink bugs show up in some wheat fields in the delta. It is not uncommon to find stink bugs in wheat after head emergence. However, it takes extremely high numbers to cause economic damage to heading wheat.
Over the last 5-7 days aphid numbers have started crashing in wheat fields around the state. Our wheat test in Starkville went from several hundred per row foot on April 1st to less than 10 on April 4. Many consultants and dealers have told me they are seeing the same thing. A lot of this can be attributed to parasitized aphids from Lysiphlebus testaceipes (small parasitic wasp) but other cases may be contributed to various diseases that will take out aphid populations.
Over the last week I have received several calls of very high aphid numbers in wheat. The two species being found are Bird Cherry-Oat aphids (BCO) and Greenbugs. I have had reports of treatable levels of Greenbugs being found but
One of the objectives of this program is to identify key production limitations, so the Mississippi State University Extension Service and Experiment Station can better direct efforts to develop innovations for our specific problems. This is a summary of such limitations documented during the past few years.
Last year was a challenging year for insect pests of rice in Mississippi. In general, we experienced higher than normal populations of rice water weevil, rice stink bug, and fall armyworm. Luckily from the rice water weevil standpoint, the two
This update covers rice burndown considerations, hybrid insecticide seed treatments, and 2011 USDA Outlook Agriculture Forum – Rice Planting Intentions.
The 2010 Row Crop Short Course was held at Mississippi State University on December 6 – 8, 2010. As we expanded the Short Course in 2009, we also have adopted technology to record the oral and visual portions of the presentations.
In Mississippi, the rice water weevil is the most important early to mid season pest in rice. Three years of research have shown that foliar pyrethroid applications provide variable results, and may not always provide acceptable control.
Cotton producers in Mississippi planted approximately 425,000 acres of cotton in 2010. This was a 33% increase in acres compared to 2009. Approximately 5% of cotton in MS was planted to transgenic single gene Bt varieties and 90% of cotton acres was planted to dual toxin transgenic Bt varieties. The most popular varieties planted in 2010 were
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