Seminole Crop E News

Agricultural News for Farmers and Agribusiness in SW Georgia

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Tifton HERD Sale

Posted by romeethredge on April 18, 2014

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The Tifton HERD Sale is scheduled for Tuesday, April 22, 2014, at 12:30 p.m.  To view the catalog and sale order now, simply click on the following:  

http://www.caes.uga.edu/commodities/animals/beef/herd/index.html

 Scroll down to Tifton HERD Program.   Click on Catalog (pdf).  Click on Sale Order for 4/22/14 (pdf).

Posted in Livestock | Tagged: | Leave a Comment »

Question of the Week – Shepherd’s Purse

Posted by romeethredge on April 18, 2014

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The weed I had a photo of last week is Shepherd’s Purse (Capsella bursa-pastoris). It is a turf grass, garden or pasture weed that we sometimes see, that grows similar to dandelions and has a heart shaped seedpod. I guess it also looks like a shepherd’s purse? It is purported to have medicinal values.

 

Here is this week’s question. What is this condition of corn on the plant on the right, that we saw a good bit of last year and we are seeing some again now?

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Posted in Corn, Weeds | Tagged: , | Leave a Comment »

Wheat Headed Out and Stem Maggot

Posted by romeethredge on April 18, 2014

Wheat is mostly headed out in deep south Georgia and is looking pretty good.  It’s a little later than usual this year. You can see that these wheat heads are blooming.

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Here we see lots of heads per square foot and that’s good. To estimate wheat yields you can use head number and other factors in a calculation. You can link here to an article by Florida Extension Agent Josh Thompson concerning this procedure. https://nwdistrict.ifas.ufl.edu/phag/2014/04/11/how-to-estimate-wheat-yield/

Remember that this is a perhaps a very rough estimate of yield.

 

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This is an unusual problem in wheat for us to see, Wheat Stem Maggot. Decatur County Agent, Justin Ballew saw some of this earlier in the week and correctly identified it and I saw some yesterday in a field near the Chattahoochee river here in Seminole County. The maggot apparently bores into the stem at the bottom of the top internode and the grain head dies and turns white and you can pull it out pretty easily. I saw several affected heads in an area yesterday but it was a low overall incidence in the field, it seemed.

UGA Entomologist, David Buntin, says, “Wheat stem maggot is not new. I have seen it occasionally for years. Always at low levels in fields here.”

 

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Kansas State University has some information about this pest at this link. http://entomology.k-state.edu/extension/insect-information/crop-pests/wheat/wheat-stem-maggot.html

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Posted in Agriculture, Entomology, Wheat | Tagged: , | Leave a Comment »

Corn is Yellow – Top 4 Reasons

Posted by romeethredge on April 18, 2014

Some of our corn is just coming up good but most is at V2 and the oldest is at V5 growth stage. Most of it has a yellow color for several reasons, here are the top 4 in my mind.

Leaching rains have depleted nutrients such as Nitrogen and perhaps Sulfur and it’s time to add more but it’s too wet to run the spreaders or liquid rigs to put it out.

Another reason is the erratic cool weather, with some very cool nights such as the unseasonable 38.5 degrees F on April 16th at the Donalsonville weather station.

A third reason is the wet soil. The soil is staying so wet that we are loosing soil oxygen and that is bad for roots. The plants are affected.

Reason number 4 goes along with the poor growing conditions, nematodes. Damage from nematodes in corn shows up much worse when we have poor growing conditions. Nematodes affect the roots and therefore plant growth and health.

A last reason that we won’t count is that where over the top herbicide applications have been made, that many times further yellows corn for a few days as well.

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Posted in Corn, Fertilization | Tagged: | 4 Comments »

More Rain…. soggy

Posted by romeethredge on April 18, 2014

It’s has been a wet April and it’s just the 18th. Our normal rainfall for the whole month is 3.8 inches and usually 2.5 by this point in April. But this year we have received 11.25 inches and there’s more coming today. It has slowed field operations considerably. Also, we have seen a good bit of erosion in fields and some damage to crops that are up such as corn and snapbeans.

We had some of the fastest falling rain I have seen when we received 4.88″ of rain in an hour and 15 minutes on April 7th. Here are some photos of problems.

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Mitchell county agent Andy Shirley and I were checking out this corn that was washed badly recently.

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Posted in Crops, Water | 1 Comment »

Chemical Mixing Problems

Posted by romeethredge on April 18, 2014

Agricultural chemical mixing problems sometimes occur and we end up with a mess in our spraytanks. Chemicals sometimes don’t mix well and when we mix several products together we increase the chance of a problem happening. We call this incompatibility. Sometimes just paying careful attention to the mixing order and they way you mix it in can make a big difference. Many agrichemicals have the preferred mixing procedures on the labels. If they don’t then go by the W-A-L-E-S method pictured below.

If you are considering mixing more than 2 agrichemicals together or doing an unusual mix, it would be good to do a jar test to see what will happen before mixing up a 500 gallon load. I recently helped a grower do this with a mix we were a little worried about and it turned out fine as you can see in the photo of me looking and the good mixture we got. See instruction sheet and photos below. With the Jar Test Kit that most county agents have thanks to UGA Extension weed scientists and Syngenta, we can figure the amounts precisely, like we will have in the tank later, to see if all things will mix well.

 

 

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Posted in Agriculture, Weeds | Tagged: | Leave a Comment »

2013 Georgia Peanut Achievement Club

Posted by romeethredge on April 11, 2014

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2013 Georgia Peanut Achievement Club Rules and Guidelines

 

 It is time to prepare entries for the 2013 Georgia Peanut Achievement Club (GPAC). With the second straight year of incredible yields, we are expecting some very worthy entries.

  There will be 10 winners chosen in this manner: 

(1)    One state-wide winner that produced the highest average yield in Georgia in 2013 on 100.0 – 299.9 acres.

 

(2)    One state-wide winner that produced the highest average yield in Georgia in 2013 on 300 or more acres

 

(3)    One winner from each of the four GPAC districts for the following two acreage categories:

    1) 300-699.9

    2) 700 and up

The winners of each category receive an expense paid trip for themselves and their County Agent to the Southern Peanut Growers Conference at the Edgewater Beach Resort in Panama City Beach, FL (July 24-26, 2014), sponsored by BASF and Syngenta.  Entry forms are due in Tifton by Monday May 5, 2014 at 5:00 pm.

 Email me if you would like the complete rules and forms. ethredge@uga.edu

Posted in Peanuts | Tagged: | Leave a Comment »

Canola in Showy Phase

Posted by romeethredge on April 11, 2014

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Canola is in the real showy phase right now in south Georgia. I’ve had airplane pilots call me before asking what that bright yellow crop is in April.  Canola is grown for the high quality oil it supplies.  Decatur County Agent Justin Ballew and I were looking at some in Stephen Houston’s field recently. All types of pollen and nectar loving insects were out there as well.

Canola gets a disease called Sclerotinia that affects growth and yields so growers protect the plants with fungicides. This scerotinia is different from the peanut disease.

Here’s a link to UGA Canola Production information.

http://www.caes.uga.edu/commodities/fieldcrops/canola/

Posted in Agriculture | Tagged: | Leave a Comment »

Peanut Inoculant Considerations

Posted by romeethredge on April 11, 2014

We are fortunate that legumes including peanuts fix nitrogen from the atmosphere in the presence of a good inoculant so we don’t have to supply this nutrient ourselves.

Here are some peanut inoculant considerations for 2014 by Dr. Scott Tubbs, UGA Cropping Systems scientist.

 It’s been a cool and wet winter, and we’re coming out of what was the wettest year on record in many locations.  This would be a good time to refresh your memories on peanut inoculant applications.   Because of the conditions mentioned above, the rate of survivability of native Bradyrhizobia present in the soil is likely to be much lower than in most years (regardless of how many years it has been since the last time peanut or a cross-inoculating species was grown in a field).

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Therefore, I would highly recommend growers to strongly consider the investment in a peanut inoculant at-planting this year, especially in poor draining fields that had standing water for more than a couple days.  When soils are saturated, oxygen is depleted and several things can occur with respect to these bacteria.

First, if heavy rainfall occurred shortly after a liquid inoculant was applied the last time peanuts were grown in a field, it is possible that the concentration of the Bradyrhizobia bacteria was drawn away from seed furrow from dilution or leaching.  Saturated conditions can also kill the bacteria leaving lower native populations for infecting future peanut plantings.  When saturated conditions occur while peanuts are growing in a field, N-fixation is halted since oxygen is needed in this process, but is not readily available in the soil pore space since water occupies all of that volume.   It has been stated before by my predecessors and colleagues, and by me in previous years as well – an inoculant application is one of the most cost-effective “insurance policies” at a grower’s disposal.  Without taking the time to run the dollar values at current prices, I can still safely say that in most years it takes merely a 50-80 lb/ac increase in yield to cover the cost of the inoculant application at planting.  You will not see benefits from inoculants each and every year, but considering it only takes a 250 lb/ac yield bump once every 3-5 years to break even on an annual product application, such a decision should be an easy one for most growers to make since the chances of a profitable outcome in the long-term is much greater than not.

Also keep in mind that the product is listed on the label to be delivered at around 1.0 fl oz per 1,000 linear row feet (may differ slightly depending on which product is selected).  This is developed for single row application.  Inoculant application is not like adjusting seeding rate, where you are pulling half of the amount out and moving it over to the adjacent twin furrow.  With an inoculant, the applied amount needs to be per furrow, therefore a twin row planting inoculant application will double the amount of inoculant applied compared to a single row planting.  I have no data to support using a half-rate of inoculant per furrow to keep the total application rate per acre the same as a single row planting.

   Some additional reminders regarding inoculant formulation decisions:

  • When applied at labeled recommendations, the amount of viable cells delivered on a per acre basis does vary by formulation, with the liquid inoculants supplying the most (8.3 x 1011 cells/ac), followed by sterile peat products (5.8 x 1011 cells/ac), and granular supplying the least (2.4 x 1011 cells/ac).  However, this should not be the primary deciding factor on which formulation to select.

  • Sterile peat/powder formulations are only recommended if there is no way of applying the other formulations.  To get good coverage/sticking of the product to the seed, the seed need to be moistened.  This requires drying time to prevent messy planter problems.  When applied dry, there will be inadequate seed coverage.  I have data showing reduced nodulation and yields using this formulation compared to the other formulations.

  • Do not confuse the granular inoculant formulation with the sterile peat/powder formulation, they are not the same.  The granular formulation, while also a dry product, is not applied to the seed prior to planting, it is metered through a dry metering box such as an insecticide/herbicide hopper and placed in-furrow.

  • Regardless of formulation, these are living organisms.  If you want them to remain alive/viable, then don’t leave them sitting in the cab of a hot pickup truck or tractor, nor exposed to direct sunlight.

  • Likewise, since this is a living medium, exposure to certain pesticides designed to kill living organisms (insecticides, fungicides, etc.) may adversely affect the product.  Minimize exposure to such products, and consult the labels/websites/representatives for more information about mixing of products.  There should be minimal concerns of exposure to typical peanut seed treatments, and short-term exposure to common in-furrow fungicides in the case of tank-mixes.  But a chlorine-free water source must be used as the carrier for liquid inoculants.

  • When soil conditions are relatively dry, liquid inoculants will disperse away from the intended target, thus the concentration of Bradyrhizobia near the seedling upon emergence and early season growth when infection should be occurring may be hindered.  The granular formulation will remain at the bottom of the seed furrow, where intended.  Therefore, in non-irrigated conditions with only marginal soil moisture, granular products should be considered.

Posted in Agriculture, Peanuts | Tagged: | Leave a Comment »

June Beetle Grubs

Posted by romeethredge on April 11, 2014

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These are green June Beetle grubs. They were found in a pasture where white birds were abundant, indicating some sort of insect presence. The grubs were just at the soil surface causing some disturbance to the grass. Looks like good fish bait.  The adult June beetles are large green beetles.

Dr. Will Hudson, UGA Entomologist, gives us some more info on this situation.  “They are the only ones that will come to the surface, and their legs are very short for the size of the body. They also crawl with their legs up in the air. They don’t eat roots, just organic matter in the thatch layer (that’s why they come to the surface). The damage is all mechanical, from tunneling up and back down. Let the birds eat them if they will, but any labeled pyrethroid will kill them at a low rate. It’s probably not worth a treatment unless there are so many they churn the top layer and sever roots. This time of year, when the soil is still too cool for the grass to really be growing, the “damage” seems worse than it actually is in many cases.”

Posted in Agriculture, Entomology | Tagged: | Leave a Comment »

 
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