OVERVIEW  

Much of the Midsouth crop will have gone to flood by the time our next issue goes out. That’s always a relief for everyone involved.

 

Compared to last year, grass and weed control have been a bigger challenge in places. Weather accounts for most of the factors involved.

 

Post-flood herbicide injury is turning up in some Arkansas rice. This isn’t related to drift. See comments by Jarrod Hardke.

 

Rice water weevil numbers appear to be heavy in parts of Arkansas. See comments by Gus Lorenz.

 

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CROP REPORTS

Richard Griffing, Griffing Consulting, LLC, Monterey, Louisiana:

“After this week, all of my rice will be at flood. We’re at green ring on about 20%. With all this good sunlight, rice has been moving along really well. We do have a 40% to 80% chance of rain tomorrow (6/5). The amount in the last forecast I saw was 0.3 of an inch, and we wouldn’t turn it down. We’re watering corn hard and watering beans, too.”

 

Scott Holder, Helena Chemical Co., Cleveland, Mississippi:

“Some rice is at midseason and we also have some where the water is just starting to go on. We don’t have much late rice and a good percentage of rice that’s not at midseason yet will be there in about 10 days.

 

“It’s been a lot harder keeping grass and weeds out of it than usual. Everything worked to a ‘T’ last year. This year, though, it was harder to get everything done and also work around soybeans.

 

“We’re about to start our pre-tassel shot of fertilizer in corn. In soybeans, growers are laying by a lot of fields and beginning to roll out pipe. We had a fair rain across parts of our area on Sunday morning (6/3) and soybeans will be fine until next week where rain did fall. Where it didn’t, people will have to turn on water toward the end of this week if it doesn’t rain.”

 

Charles Denver, Denver Crop Consulting, Watson, Arkansas:

“Rain has varied. One area east of Dumas got over an inch on Saturday night (6/2) but 6 inches fell around DeWitt. Gould, though, got nothing.

 

“A lot of rice didn’t have a good stand to start with and some fields have plants at 3 to 4 different ages. Those are still being flushed to even things out. The rice under flood does look pretty good. With this last storm, quite a bit of corn was blown down around DeWitt.”

 

Dustin Harrell, Louisiana Rice Extension Specialist, LSU Rice Research Station, Crowley:

“Most of our rice in southwest Louisiana is at mid to late boot and it’s moving along quite nicely. We’ve received just a handful of calls about leaf blast and only one on sheath blight. So, disease incidence is light (as of 6/7).

 

“We’re getting close to that second shot of fungicide. I imagine we’ll see a large percentage of our rice beginning to head next week. Mid-June is when we typically expect that, so the crop is about on time.

 

“In north Louisiana, people are starting to think about midseason applications. That rice looks good, as well. Really, the only problems anywhere have to do with drift – either drift onto the rice or drift moving off rice to soybeans.”

 

Gus Lorenz, Arkansas Extension IPM Specialist:

“Rice water weevil (RWW) activity is the highest I’ve seen in the 12 or so years I’ve been working in rice. Several people with more years in rice say it’s the most they can remember, too. High numbers of RWW adults are coming into the field and we’re finding more leaf scarring.

 

“In places, the scarring is quite phenomenal. A lot of these fields are going to flood. The recommendation with this much scarring is to apply a pyrethroid to take out females before they deposit eggs. The key is to hit them 5 to 10 days after the flood. Timing is critical. If you go past 10 days, you might as well not spray.

 

“This is a native pest and it seems like that kind of insect can tolerate cold winters better than migratory pests that move up from the south. Scout closely. I mean it, scout closely.”

 

Jack Haney, South Arkansas Crop Consulting, Pine Bluff, Arkansas:

“We’re trying to get everything to flood. We seem to have been in a bone-dry hole here and have been flushing a good deal to get rice plants big enough to flood. By the end of next week, I’m hoping that we’ll have about 95% of this crop to a permanent flood.

 

“Some of our very earliest rice is at green ring now (6/7). The way the weather went, we had a brief spurt of planting early and then planting dribbled along before we hit that 10-day period, which is when we planted nearly everything. That was at the very end of April and into early May. With that part of the crop, we’re trying to tidy it up now, get fertilizer out and begin pumping water.

 

“Beans look good and we’re cleaning them up. Most of the beans have been planted and I think people will finish with their late fields this week. We’re trying to get Prefix out everywhere we can before we move past that window. Polypipe is being rolled out so we can start watering. Our earliest corn is at tassel. It caught a few timely rains the week before last. Generally, corn is on the third irrigation.”

 

David Hydrick, Hydrick’s Crop Consulting, Inc., Jonesboro, Arkansas:

“Every bit of our rice is going to flood now – this week. Before this week, nothing was at flood. We’re killing jungles, putting fertilizer on the rice and flooding.

 

“When I say ‘jungles,’ this has been the biggest and thickest grass I think I have ever dealt with in rice. Some growers sprayed a couple of weeks ago and kind of knocked it back and there were some applications before that. But the vast majority of people just want to do something at flood. That means dealing with those jungles.

 

“We’re cleaning it up, believe it or not, but I’m having to work some miracles. It’s been a challenge to get things done, with a lot of these fields beside soybeans or cotton. At this point, we’re coming back and finishing off what we didn’t completely kill earlier. Overall, we’re either spraying, fertilizing and then flooding or we’re putting on fertilizer and flooding.”

 

Bobby Golden, Mississippi Extension Rice and Soil Fertility Agronomist:

“We’re still flooding rice – more and more fields every day. This is probably the biggest part of the push to flood this year. At this point, maybe 40% to 45% of the crop is at flood.

 

“We’re into a typical round of drift occurrences. Jason Bond (Extension Weed Specialist) said that with all the soybeans being sprayed, we could expect an increase in calls and the volume has gone up a little. Overall, though, we’ve seen less glyphosate drift than in a long time.

 

“A reminder: we’ve scheduled our annual rice field day for August 2. That’s here at Stoneville. More details will follow.”

 

Jarrod T. Hardke, Arkansas Extension Rice Specialist:

“The crop looks pretty good and we’ve certainly flooded more than half of the rice. Most of the recent herbicide drift complaints have died down. A lot of this reduction is likely due to applicator decisions and also moving through the learning curve.

 

 

“In the last week or so, a different set of herbicide issues has come to light. We’re seeing and hearing about delayed phytotoxicity syndrome (DPS), which can occur after the rice goes to flood. Basically, the rice can’t completely metabolize certain herbicides.

 

“When DPS occurs, we have to pull the water off. If you don’t, the rice could actually die. One tell-tale symptom is that rice plants feel kind of crunchy when you step on them. You also will find deformed tillers. The tops of plants look sickly but those lower, newer tillers obviously have a problem.

 

“There have also been instances of Newpath injury to Clearfield hybrids. We tend to see this during periods of wet conditions and overcast skies when rice isn’t growing fast and can’t process the herbicide quickly enough. But this year we’re seeing a different deal altogether. Right now, rice is growing at an exaggerated rate – so fast that it can’t metabolize herbicides properly. That’s my thinking on it.

 

“Once you take the flood down, the rice usually bounces back in about a week. Again, try to keep the flood shallow and plants should grow out of the effect.

 

“More rice would be going to flood right away but the planes are backed up on fertilizer and herbicide applications. Hopefully, they can work that down pretty quickly. Some of this rice really needs to go to flood immediately. Windy conditions also were delaying that work. Winds have somewhat died down this week, which adds another complication since you don’t always have a defined idea about which way the wind is moving.

 

“I’ve already seen one case of glyphosate drift on reproductive rice. It’s early to be finding that, which is a concern, but we do have rice moving into the reproductive stage, so potential for injury exists. In theory, there shouldn’t be much Roundup going out right now by air.

 

“Keep in mind that the yield penalty for Roundup drift on reproductive rice is very high. Symptoms are kind of vague, too. Parts of the field won’t look quite right and plants will have kind of a cast, but that goes away and a grower may not know it’s happened until malformed heads and leaves become apparent later.”

 

LINKS

 

Louisiana Weather Changes Affecting Crops 6-6

 

Louisiana: Rice Field Day, Crowley, June 27 6-4

 

World Rough Rice Prices Decline   6-6

 

Brazilian Breeding Better Varieties   6-6

 

 

 More Rice News And Analysis

    


 

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