Monthly Archives: October 2015

Cover Crop Following Peanuts

CoverCrop

With most of our peanuts out of the ground, we’re looking at putting in cover crops with  talk of an El Niño year. UGA Extension Soil & Fertilizer specialist Dr. Glenn Harris answers the question: Should we give that cover crop which follows peanuts a nitrogen (N) credit (lower than normal N fertilization) since our peanut harvest was good?

Short answer: No!

UGA Extension recommends 20 to 40 pounds per acre credit to a cover crop after peanuts.

UGA Nitrogen recommendations for Rye, Wheat & Oat fall planting are 20 to 40 pounds per acre at planting following peanuts and another side dress application in February are the standard nitrogen recommendation in Georgia.

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Cool Season Pasture Establishment Tips

FaithPittman-Weed 030

It’s been very dry for planting our grazing. Some grazing has been planted like this one but many growers are waiting for the rain. The rain is predicted for this week. This field was planted the first week of October. It’s Horizon 306 variety of oats. They harrowed, spread chicken liter, dressed again, then drilled in seed. Here is some information from UF Soil & Nutrient Extension Specialist Dr. Cheryl Mackowiak:

Preparing Land

Prepare land for winter grazing by closely grazing or mowing down the existing pasture in the fall, prior to planting. This results in less water, nutrient, and light competition with the emerging cool-season forages. You can also till an area for producing cool-season forages. Forages started in tilled soil will grow faster and often outperform over-seeded forages. A prepared seedbed minimizes competition for resources and during cooler periods, the exposed soil will warm more than soil under residues.

pH/Lime

Target soil pH to a range from 5.5 to 6.5. If you find that your soil is near the low (acidic) end of the scale, consider applying lime. However, do not apply lime within a month of your fertilizer application, as you may increase nitrogen volatilization (N loss) and tie-up more soil phosphorous (P), leading to less available fertilizer for the plants. If you have not limed yet, you might consider waiting until winter, or before the spring transition into summer forages.

Fertilization

For cool-season grasses in Florida & SW Georgia, 30 lbs N/acre is recommended at or near planting, then another 40 to 50 lbs N/ac after the plants have established (beginning to branch or tiller). If you want greater clover competition, apply less N (30 to 50 lbs near planting and no additional application). Under grazing, you might find that applying another 30 to 50 lbs N/acre in early spring is required, particularly if there are leaching rains, or livestock are not redistributing excrement uniformly across the pasture. If El Nino conditions prevail through the 2016 winter/spring, you may find yourself under flooded conditions. Annual ryegrass and white clover survive saturated soils better than most other Florida cool-season forage options. Saturated soils will also lose N via denitrification (gaseous loss). Do not apply additional N fertilizer until the soils have adequately drained.

FaithPittman-Weed 031Planting Dates

Planting now through mid-November ensures well-established plants with deep root systems to capture nutrients that may leach during large rain events. Also, managing grazing to retain adequate forage (3 inches or more stubble height or grazing to remove only half of your canopy height) will insure adequate rooting mass and depth, in order to capture soil nutrients deeper in the soil profile and promote stronger, more resilient plants and faster regrowth.

Keep in mind that the fertilizer investment made for cool-season forages will be returned in animal gains and a healthier pasture. The root mass from winter forages decomposes in early summer, contributing organic matter and slow-release nutrients to the soil that will help support the summer pasture.

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Grain Sorghum Dessication

Sorghum-Morningglory

We still have some late grain sorghum left to harvest and we’ve been talking about dessication. We discussed this with UGA Extension Weed Scientist Dr. Eric Prostko who has received more questions this year about the dessication of grain sorghum. Dr. Prostko says, “Growers need to know that the use of harvest-aids in grain sorghum has shown little effect in reducing grain moisture content.”  A summary of 2 older papers is as follows:

1) Hurst, Harold.  1991.  The Use of Dessicants For Field Drying Grain Sorghum With and Without Weeds.  Mississippi Agricultural and Forestry Experiment Station Bulletin #974.

“Overall, these studies did not result in any distinct advantage for application of dessicants to reduce grain sorghum moisture.”

2) Olson, B.L.S, T. Baughman, and J.W. Sij.  2001. Grain Sorghum Dessication with Sodium Chlorate and Paraquat in the Texas Rolling Plains.   Texas Journal of Agriculture and Natural Resources 14:80-83.

“Results from our 2-year study indicate that dessicant applications were generally ineffective (and most likely uneconomical) in reducing grain moisture in late-planted grain sorghum.”

In my opinion, the major (only?) benefit of using a harvest-aid in grain sorghum would be to reduce the amount of green plant material that goes through the combine and might end up in the grain.  I know of only 3 things that will dry down grain sorghum seed: time, a hard freeze, and/or a grain dryer.”

When we treat as a harvest aid, keep in mind that the grain needs to be past the milk stage of development. Dr. Prostko recommends treatment as close to harvest as possible to lessen the chance of morningglory regrowth.

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2015 Sunbelt Expo

2015Expo 026

We had a great time at the Expo this year. The weather was nearly perfect each day. It was very cool Tuesday morning but got very warm by yesterday. I worked at the UGA building with the College of Agriculture holding down the “Ask an Agent” booth. We talked with lots of people from around the state about different types of agriculture, residential, and landowner issues. The booth showcases 4-H, FACS, and Ag Agents.

County Agents Brock Ward (Miller County), Stephanie Benton (Early County) and Melinda Miller (4-H PDC) talk with folks inside UGA Building

County Agents Brock Ward (Miller County), Stephanie Benton (Early County) and Melinda Miller (4-H PDC) talk with folks inside UGA Building

There is also lots of good food at the Expo. The Georgia Association of Agriculture County Agents worked their food booth once again this year. Pork sandwich, hot dogs and sausage dogs are on the menu. Many Ag agents in the state come down to help at the food booth. Here are some pictures of us working there yesterday:

GACAA Food Booth

GACAA Food Booth

Ben Shirley (Brooks County), Brock Ward (Miller County), and Dr. Bob Kemerait (State Pathologist)

Ben Shirley (Brooks County), Nick McGhee (Terrell County), Brock Ward (Miller County), Keith Mickler (Floyd County) and Dr. Bob Kemerait (UGA Pathologist)

FACS PDC Andrea Scarrow and Southwest District Director Mike Stewart

FACS PDC Andrea Scarrow and Southwest District Director Mike Stewart

At the Prefert Arena in the back, there were the stock horse demos and Florida whip crackers performing. We had local Thomas County 4-H riding all three days. Here are some photos from the arena yesterday:

Thomas County 4-H Agent Cindy Wynn announces Sunbelt Rodeo Queen Caitlan Hancock from Thomas County

Thomas County 4-H Agent Cindy Wynn announces Sunbelt Rodeo Queen Katelyn Hancock from Thomas County

Stock Horse Queen Hope Nelson from Thomas County

Stock Horse Queen Hope Nelson from Thomas County

2015 Sunbelt Expo and Stock Horse Queens

2015 Sunbelt Expo and Stock Horse Rodeo Queens

Thomas County 4-H Agent Cindy Wynn announces winners at Prefert Arena at the Sunbelt Expo

Thomas County 4-H Agent Cindy Wynn announces winners at Prefert Arena at the Sunbelt Expo

 

 

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2015/2016 Wheat Weed Control

Here is the 2015 Wheat Weed Control program for ryegrass and wild radish from UGA Extension Weed Scientist Dr. Stanley Culpepper.

WheatWeedContol-2015

WheatWeedContol(b)-2015

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Potential Kernel & Pollination Issues

The crop has progressed well and has looked good overall to date. However, UGA Extension Pecan Specialist Dr. Lenny Wells has been contacted on issues with kernels of some varieties.

There are a few non-filled kernels or “pops” out there, which is not uncommon. More disturbingly, I had several calls about a problem that is showing up on multiple varieties but is most pronounced on ‘Oconee’. This problem appears as necrotic kernels which have turned to a gelatinous/liquid material inside an otherwise healthy-looking nut. These nuts are different in appearance from the normal “pop” or pollination related kernel abortion.

KernelIssue-L.Wells

Photo by Dr. Lenny Wells

I also cut 25 nuts of several varieties, each from our production research orchard at the UGA Ponder Farm. All trees are healthy and receive commercial-level management. The percentage of rotten kernels for each variety is listed below:

Cape Fear: 24%

Oconee: 60%

Sumner: 36%

Desirable: 24%

Stuart: 35%

I saw kernels in various stages of this necrosis. It appears to start often on the bottom of the kernel, which begins to turn black and gelatinous, progressing from there.

Photo by Dr. Lenny Wells

Photo by Dr. Lenny Wells

This week, we looked at some Pawnee that are not falling off the tree. The shuck is very shriveled in appearance. Some shucks are split and we wondered about water shuck split. However, this does not usually occur on Pawnee. Dr. Wells believes this issue maybe related to pollination. At this point, these nuts will not be able to be harvested.

Pawnee

Pawnee

(Dr. Wells) From the calls I received, this appears to be a fairly widespread problem affecting the crop at varying levels. Unfortunately, we don’t really know what is causing this nor to what extent it will affect the crop. Most of these nuts will blow out of the harvester or cleaning plant. I have seen enough out there that I expect growers will notice it more and more as harvest progresses.

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Hay Help

Seminole Crop E News

Helping our Neighbors in South Carolina

You’ve seen the news. You’ve seen the devastation that has hit South Carolina in the wake of all the rain they received a few days back. What hasn’t been in the news is how much damage was done to their hay crops. For many farm families, their whole summer’s work has literally been washed away.

The Clemson Extension Livestock and Forages Team is trying to help with the relief efforts. They are attempting to connect folks from surrounding areas that might have hay available to sell. By visiting this web-based form (http://goo.gl/forms/4TyKp34EfG) and providing the pertinent details about the hay you have available, it may help connect you with a farm family in South Carolina that needs your assistance. For more information, visit the Clemson Extension Livestock and Forages Team‘s Facebook page.

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