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Rain puts state's rice farmers behind schedule

MSU rice_webACROSS MISSISSIPPI — With Mississippi’s rice crop about two weeks later than normal, growers will have narrow windows of opportunity to perform necessary management as it grows.

The U.S. Department of Agriculture estimated 92 percent of rice was planted by June 1. Seventy-four percent of the crop that has emerged was in good to excellent condition.

Bobby Golden, Mississippi Agricultural and Forestry Experiment Station agronomist in Stoneville, said the late planting and heavy rains in late May are making management a challenge.

“We’re going to accumulate heat units early in the season, so rice is going to get bigger more rapidly than if it was planted in April,” Golden said. “This compresses the management window.”

Best management practices dictate that certain steps be taken at specific points in a row crop’s development. Missing these windows of opportunity can result in yield decreases. In early June, growers were waiting for rice fields to dry out after late-May rains so they could apply herbicides and fertilizer. This pause delayed the flooding of rice fields.

“The best management practice is to apply fertilizer to a dry soil surface and then flood it in,” Golden said. “The challenge over the next two weeks is getting the preflood fertilizer out in a timely fashion.”

Applying the fertilizer before the ground is flooded is the ideal method. Golden said research done in the Midsouth indicates applying it in incremental doses to a flooded field is less efficient.

“This is a Catch-22 for growers. Do I wait for the soil to dry so I can apply preflood fertilizer, or do I start the regimen of dropping it in the flood water in successive weeks?” Golden said.

Golden estimated state producers have planted at least 185,000 acres of rice this year. The state planted just 125,000 acres of rice in 2013.

John Michael Riley, MSU Extension Service agricultural economist, said price averaged $14.47 per hundredweight for the September futures contract during May. It has stayed about that price into early June.

“Last year, prices at harvest were very strong, and with the record-setting yields in Mississippi and nationally, producers were motivated to increase their acres for 2014, especially when considering the declines in prices for crops that compete for those acres,” Riley said. “This increase in acres should push supplies higher, which is weighing on prices. Prices in 2014 have been about 6 percent lower than in 2013 but very near prices in 2011 and 2012.”

Jason Bond, a weed scientist at the MSU Delta Research and Extension Center, said the biggest problem to date has been weeds growing large because wet weather prevented growers from making timely herbicide applications.

“We’ll definitely have fields with weeds in them at harvest,” said Bond, a MAFES researcher. “Growers already have incurred some loss of yield potential due to interference from weeds.”

Herbicide drift is a significant problem for rice producers. Many of Mississippi’s row crops are resistant to glyphosate herbicides, but rice does not have this resistance. Growers spraying fields near rice must be very careful to ensure that wind does not blow the chemical spray into rice fields, causing serious losses.

Jeff Gore, MSU Extension Service entomologist at the Stoneville research station, said insects have not yet become a problem in rice. Armyworms have appeared in a few fields, but those pests usually are not a problem this early unless they start reducing plant density. This problem can happen quickly in rice adjacent to wheat that is drying down.

“Preventing plant loss is most important with hybrid rice, and Mississippi producers grow quite a bit of this rice,” Gore said. “Hybrid rice is planted at the rate of 20 to 25 pounds of seed per acre, while inbred varieties are planted at 75 to 85 pounds per acre. Because hybrid rice already has a very low plant density, we don’t want to lose any plants to insectJeff Gores such as armyworms.”

Gore, who is also a MAFES researcher, said the biggest insect concern as rice goes to flood is the rice water weevil, and he urged growers to scout closely for this pest. Seed treatments can help prevent problems when used, but Gore said a supplemental pyrethroid treatment is sometimes needed to prevent an infestation.

“Seed treatments are an important tool for rice water weevil management, but they are not a silver bullet under all conditions, especially in a year like this one where we have had a cool, wet spring,” he said.


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