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Dryland crops need rain soon: Louisiana

Only several thousand acres of east central Louisiana farmland received enough rain last week to benefit crops, according to Roger Carter of Agricultural Management Services. “Ninety percent of the area is dry. And 50 percent of that is bone dry.

“Rainfall must come soon to salvage dryland crops, especially on clay and silty clay loam soils. Irrigation costs are staggering. It has been difficult for many farmers with furrow irrigation on clay soils to keep up without scalding crops.

“And wells are now less productive than several weeks ago.”

Other crop conditions reported by Carter in the July 13 AMS Ag Report:

GRAIN SORGHUM — Late grain sorghum has been invaded by armyworms and ragging leaves considerably, but we are not treating. We will begin treatments this week on late grain sorghum for borers. This should take care of some armyworms.

Early grain sorghum is within weeks of harvest and has excellent yield potential (100 bushels per acre plus), but grain sorghum planted several weeks later missed the timely rains and suffered.

Intrepid at 6 ounces per acre was applied days ago for control of borers’ it gave 90 percent control of sorghum webworms after seven days.

SOYBEAN — Oldest soybeans turning. Reports of some soybeans still being planted to our south.

Fungicide strategies are the same as last week. When we get enough moisture to insure enough production to cover fungicide costs, fungicides may be applied. Some Quadris is moving into the system. Stratego is available at one location. Headline at all.

With Cercospora being observed in most fields, Topsin L will figure into most fungicide applications.

Threshold levels of stink bugs and/or three-cornered alfalfa hoppers were found on several thousand acres. Beetles are increasing. We will try some Dimilin to enhance insect and perhaps Cercospora suppression.

COTTON — NAWF is approaching 3 or less on several thousand acres of cotton. Rain can only help fill out some bolls on this cotton. Extensive rainfall will cause regrowth.

Plant bugs are increasing in some fields, but holding below threshold in many. Spider mites are being treated on several thousand acres. Brigade at 0.5 gallon per acre plus crop oil at .0625 gallon per acre did an excellent job on mites in the Wildsville, La., area. Correct application is a key to control.

Bollworms are at threshold levels on 30 percent or greater of our cotton acres and pyrethroid applications are beginning. Many combos are being used, depending on other pests present. Brigade is being used if mites are present. We are adding Orthene or Bidrin to “regular pyrethroids” if stink bugs are an issue. We are still using some Diamond. We are adding 0.25 gallon of Trisert/Coron/etc. to aid as a carrier.

Tim White, Walter Myers, Wil Miller, Matt Myers, Lydia Ellett, and Roger Carter of Agricultural Management Services, Inc., are located in east central Louisiana, serving Catahoula, Concordia, northern Avoyelles, southern Franklin, and southern Tensas parishes.

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