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Row crop research featured at lsu agcenter field day - China Penetrating Agent - Oxygen Scavenger C by icdenta icdenta
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Row crop research featured at lsu agcenter field day - China Penetrating Agent - Oxygen Scavenger C by ICDENTA ICDENTA
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| Article Posted: 09/09/2013 |
| Article Views: 46 |
| Articles Written: 1096 - MORE ARTICLES FROM THIS AUTHOR |
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Row crop research featured at lsu agcenter field day - China Penetrating Agent - Oxygen Scavenger C |
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Business,Business News,Business Opportunities
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More than 170 farmers and agriculture industry representativesheard about the latest research on corn, soybeans and cotton at theannual field day held June 14 at the LSU AgCenter NortheastResearch Station. LibertyLink technology is proving effective for controlling weedsin all three crops, said LSU AgCenter weed scientist Donnie Miller."There are not many broadleaf weeds it will not workon," he said of Liberty herbicide. Liberty is "fantastic" on broadleaf weeds, butproducers need to apply it on Palmer amaranth when the weed plantsare less than 2-3 inches, Miller said. The weed scientist has put out his research plots in a"systems approach" with different chemicals used aloneor in combination at different rates with Liberty. "Libertyneeds help with grasses.
If you make timely applications withoutusing a residual herbicide, you"ll get good control. But ifyou are delayed, grass and pigweed control can benefit fromresidual materials." Weed resistance to Liberty is still "rearing its head,"and farmers should use additional herbicides when necessary tocontrol potentially resistant weeds that escape initial herbicideapplications. In other soybean research, Theo Udeigwe introduced the audience toa new study looking at various soybean varieties and maturitygroups in different "planting windows" that go fromearly April to early June. The evaluation at the Northeast Research Station is one of eightlocations across the Mid-South, Udeigwe said.
In the trials, Udeigwe planted four soybean varieties from each offour maturity groups -- III, IV, V and VI. The goal of the study isto determine which varieties do better when planted earlier. "Early planting optimizes growth because cooler temperatureshelp early growth," said LSU AgCenter soybean specialistRonnie Levy. "Every variety is a little different." Soybean problems this year include western flower thrips, which aremore difficult than other insects to control, said LSU AgCenteragent Sebe Brown.
Brown has heard rumors of tarnished plant bugs and warned producersto be aware of flea hoppers. He also heard one report of cornearworm in soybeans. Producers should begin scouting for red banded stink bugs."They can move in quickly," Brown said. "Scoutregularly and scout often." LSU AgCenter entomologist David Kerns said he"s comparedin-furrow treatments with seed treatments for thrips control."In general, in-furrow treatments tend to control thripsbetter than seed treatments." He pointed to how different chemicals can be used to controlthrips. Planting date is critical for top corn yields and profit, said LSUAgCenter agronomist Rick Mascagni, who is evaluating how differenthybrids respond to different planting dates.
"We want to tryto find hybrids that can perform well with later planting." The optimum corn planting date in north Louisiana generally is inMarch and extends into early April. "Extending the plantingdate into May can result in a yield reduction of 30 percent ormore," Mascagni said. LSU AgCenter county agents Dennis Burns and R.L. Frazier describedtheir work with precision agriculture and how they"re movingpractices from the research stations to farms by working withproducers in their own operations. The agents are introducing a practice called NDVI -- normalizeddifference vegetation -- that uses equipment on a fertilizerapplicator to "read" the amount of vegetation at aparticular spot in the field and adjust fertilizer applicationrates "on the fly" to apply the appropriate amount ofnitrogen.
The equipment can be used for both pesticide and fertilizerapplication. The agents set out plots with nitrogen fertilizerrates ranging from zero to 250 pounds per acre to see how much theycan reduce fertilizer application without reducing yield. LSU AgCenter corn specialist John Kruse said a USDA competitivegrant is funding his research on feedstocks for biofuels, includingenergy cane and sweet sorghum. The objective of the five-year studyis to see how far north these traditionally warm-weather crops canproduce well.
The study will test for genetic potential andperformance at different plant populations. The study will measure "how many plants can we pack into anacre to take advantage of the nutrients and photosynthesis,"Kruse said. LSU AgCenter Master Farmer coordinator Donna Morgan and watershedagent James Hendrix provided updates on the Louisiana Master Farmerprogram. They said phase III of the program has changed with the opportunityto develop a conservation plan through the local Soil and WaterConservation District. LSU AgCenter soil scientist J Stevens explained his work with soilpH and problems with a shallow hardpan layer below the soilsurface.
He showed cotton plants with roots that run parallel tothe soil surface because they can"t penetrate the hardpanlayer. LSU AgCenter agronomist Josh Lofton said using the nutrients inpoultry litter can improve cotton yields, and benefits increasewhen the product is used in a no-till operation. A combination of poultry litter and inorganic fertilizer can helpmanage phosphorus runoff from production fields, he said. Several LSU AgCenter experts provided insight on current cropconditions: Kruse estimated this year"s corn crop in Louisiana at 600,000acres, up from 500,000 in 2011.
"In general, the corn crop went in a little bit earlier thannormal," Kruse said. This year"s crop should farebetter than average, and harvest should start in July. Levy said the state probably has more than 1 million acres insoybeans, but he said that will increase because some farmers arestill planting. Last year"s total was slightly less than 1million.
"We probably have one of the best crops I"ve seen butweather conditions could change that in a hurry," Levy said. LSU AgCenter weed scientist Eric Webster warned that new herbicidesabout to be released can be susceptible to drift, despitemanufacturers" claims. Any sprayed material can be carriedaloft in the air if sprayed at the wrong time. One of the worst conditions for drift is little to no wind withhigh humidity -- conditions that will create an inversion and carrydroplets a distance from the intended field. Some of the worstdrift cases Webster has seen occurred from ground spray rigs.
LSU AgCenter plant pathologist Boyd Padgett said corn diseasesappear to be low and encouraged producers to identify any diseasesbefore applying a fungicide. Because of reports of cercospora on soybeans, Padgett recommendedearly-season fungicide applications at first bloom. "Ifyou"re following that strategy, you"ll have to considerreapplying." Farmers should consider post-harvest control of pigweed in cornfields, said LSU AgCenter weed scientist Daniel Stephenson. "We have tools we can use on weed emergence in cornpost-harvest," Stephenson said, reviewing several herbicidesthat can be effective.
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