Several folks throughout the state have began applying plant growth regulators to their cotton crop and many more will likely start over the next couple of weeks. Although plant growth regulators have gotten exponentially cheaper over the past 25 years,
We are having lots of questions concerning the proper set up of surge valves. First, please consider some of the basic terminology associated with furrow irrigation. We encourage you to visit http://www.youtube.com/watch?v=46sSLFBUrh8 and view the video before continuing. Phases
In 2013 a new aphid pest called the White Sugarcane Aphid, Melanaphis sacchari, was detected in grain sorghum in 38 counties in Texas, Louisiana, Oklahoma, and one county in Mississippi. This species has apparently been around for years but the hosts switch to grain sorghum appears to be new. This pest can be devastating to grain sorghum if populations reach high densities. In fact, some fields have seen 100% yield loss. Another major factor is this aphid is difficult to control with currently labeled products.
With water being one of the most expensive inputs of the rice producer, utilizing methods to limit the amount of water used makes economic sense. Adoption of multiple inlet irrigation has allowed producers to reduce water consumption. Water use with
The importance of soil moisture sensors is becoming more evident as we continue forward this growing season. Today (Monday, June 16th), we received a call regarding sensor readings that were assessed early this morning. The following are the data discussed in this scenario.
Frogeye leaf spot management continues to be a hot topic during the 2014 season. Scattered reports of frogeye in R3+ soybean fields continue to be made. Most of the questions at this time tend to be regarding fungicide management suggestions at the R3/R4 application timing. Knowing what varieties are planted in fields is one of the most important determining factors since susceptible varieties should be managed differently at R3/R4 than frogeye tolerant varieties.
Although we have received lots of rainfall this season, it is time to initiate irrigation in soybean. Keep in mind that irrigation during the early vegetative phase provides little to no yield benefit. The reason to apply irrigation during the
With most of Mississippi receiving large amounts of rain during early June, opportunities for herbicide applications in soybean have been rare up to this week. Several calls have come in regarding herbicide options in situations where the weather has prevented
Bollworm trap catches were up in the Delta region this week to levels about normal for this time of year. Most bollworm eggs will be laid in corn at this time when many corn fields are at silk stage. University research
Square retention is a critical component of early season plant bug management. I would strongly encourage you to take square retention counts along with your sweep net counts prior to bloom. Not only does this help in the decision making process of treating plant bugs, but it also helps you to get a better idea of how the products you are applying are working. Numbers alone can be deceiving when adults are steady moving into the field. When large numbers of adults are migrating into a field it is not uncommon to have as many or more plant bugs 4-5 days after a spray than you did before you sprayed and it still would not equate to a control failure.
Diagnosing nutrient deficiencies is not rocket science, but can be cumbersome. Many nutrient related issues occur early in season and can sometimes mimic herbicide injury in appearance. In many instances it is difficult to tell the two apart. Most often
To date this has been a fairly light corn disease year. However, some lesser observed diseases, such as anthracnose leaf blight can be observed on the lowest leaves in some corn fields. Common rust, northern corn leaf blight, and to a much lesser extent southern corn leaf blight can also be observed in some corn fields.
Mississippi State University and Monsanto Company will be conducting a field day in Robinsonville, MS on Thursday, July 10, 2014. The field day will focus on the Roundup Ready(R) Xtend Crop System in cotton and soybeans. Field demonstrations will include cotton and soybean germplasm
Mississippi State University and Dow AgroSciences will be conducting a field day at the farm of Douglas and Chris Hood on Wednesday, July 2, 2014. The field day will begin at 9 a.m. and will focus on Enlist(TM) Weed Control System in
There are several caterpillar pests that commonly infest field corn in Mississippi. These include corn earworm, fall armyworm, and southwestern corn borer.
Bollworm trap counts were higher in Lowndes county this week, but all other locations were similar to the previous week. Tobacco budworm catches remain at very low levels throughout the state. Southwestern corn borer counts were also very low throughout
According to the USDA National Agricultural Statistics Service in Mississippi, 89% of the soybean acreage is planted as of the week ending June 8, 2014. At this time, 82% of the crop is emerged. The remaining acres to be planted
On June 9, leaders from the Mississippi Soybean Promotion Board, key personnel from the Mississippi State University Extension Service, and stakeholder organizations a part of the Delta Sustainable Water Resources Task Force formally announced a series of summer irrigation “Turn Row Talks†to be held across the Delta during the month of July for producers to attend local, on-farm demonstrations of water conservation efforts being implemented and utilized by growers in their respective areas.
Rainfall throughout the state has delayed weed control applications resulting in weeds that have become larger than desired and more difficult to control. Several calls have come in regarding sequential application options for management of glyphosate-resistant pigweeds and other species.
I have had numerous calls recently on green stink bugs in beans that are either vegetative or at R1-R2 stage with no pods. Numbers have ranged from 4-5 to 8-12 per 25 sweeps depending on the field. It is not uncommon to have a field or two on occasion to have threshold numbers of stink bugs before soybeans put on pods, but the number of fields this year being reported is certainly unusual.
The tarnished plant bug calls have started to come in on small cotton already. In some cases, consultants and growers are finding nymphs on very young cotton with only 1-2 squares. Similarly, some are reporting plant bug flagged terminals in pre-square cotton. We rarely have to spray pre-square cotton for plant bugs, but our threshold is 1 flagged plant per 10 row feet with bugs present. Although tarnished plant bugs are our most important and most consistent pest of cotton in the Delta, we usually don’t start finding nymphs until closer to first flower.
Over the last few days I have started getting calls about fall armyworms showing up in soybeans. We see some of this every year, and it is primarily related to larvae moving off of a grass host after a Roundup application
Bollworm catches were lower in the Delta this week but steady in Northeast MS. Tobacco budworm catches were negligible in all areas (Table 1). Southwestern corn borer counts were also low throughout the state, so early corn that is now
More and more corn growers are applying various management inputs around tassel stage in order to improve efficiency and corn productivity. This article discusses how crop physiology affects the appropriate timing and crop response.
Every year at some point during the season we seem to hit a rainy spell where it seems to rain at some point every day and we have showers widely scattered across the state. It started raining last Wednesday and we have had some rain everyday since then and it is currently raining in Stoneville right now (Monday morning). With that, the questions start about how long you need to spray before a rain to get acceptable control.
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