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Rice research verification update for September 1, 2014
Author: Ralph Mazzanti, Rice Research Verification Coordinator

The heat units continue to add up which has grain maturity moving fast. There are five out of fifteen fields that have reached maturity and are waiting on harvest. Those fields include Arkansas, Chicot, Desha, Prairie and Lawrence Counties. Seven fields are at 100% headed and three fields are draining. RSBs have been very light this year but numbers are increasing slightly in late planted fields. Only three fields (Arkansas, Chicot and Cross) have been sprayed with an insecticide for RSB’s. Sheath blight continues to progress in the Jefferson County field even though we are 100% headed.   The only field sprayed for sheath blight was Lincoln County. The Prairie and Clay County fields were sprayed for blast prevention.















General Information & Application

(Rates listed per acre)




CL XL745 4-14-14


19 lbs/acre

CruiserMaxx Rice


5 plants ft2


1st post application

Clearpath 0.5 lb + Prowl H2O 2.1 pt + COC 1 pt

Apply 100 lbs ammonium sulfate applied 5/2.

2nd post application (preflood)

Newpath 4 oz + Permit Plus 0.75 oz + COC 1 qt applied 5/23.

Applied 225 lbs urea plus NBPT according to N-STaR 5/24 and established a permanent flood. The field looks good with very uniform heading. The stink bugs are running 2 per 10 sweeps.  Only one positive stop for sheath blight. Drain date according to DD-50, 8/16 actual drains date 8/10.

Total irrigation amount 21’. Total rainfall 14.45”.


Chicot XL753 4-23-14


24 lbs/acre




6 plants ft2


Maturity Herbicides recommended after planting:

Roundup PowerMax 1 qt + Command 12.8 oz + League 3.2 oz (received 3.6” rainfall from planting to preflood [30 days] for continued activation).

1st post application:

Facet 0.5 lb + 1 oz Permit + 3.2 oz League applied 5/22.

Apply 270 lbs urea with NBPT according to N-STaR and 100 lbs DAP according to soil test. Established a permanent flood 5/23. DD-50 Drain date 8/8. Actual drain date 8/10.

Rainfall totals 20.55”.

Desha XL753 5-6-14


23 lbs/acre




6 plants ft2


Recommended Roundup Power Maxx 26 oz +1 oz Sharpen +1% MSO at planting.

1st post recommendation:

Command 1 pt + Facet 0.5 lb applied 5/25.

Apply 100 lbs ammonium sulfate 5/26.

2cd post recommendation:

Permit Plus .75 oz + COC 1pt 6/13.

Apply 200 lbs urea + NBPT and establish permanent flood. The permanent flood was delayed due to underground irrigation pipe installation.

The field received 10.65” of rain since planting.

Some barnyardgrass escapes have showed up. Drain date was right on with DD-50 8/22.

Jefferson LaKast 5-25-14


65 lbs/acre

CruiserMaxx Rice




Herbicides recommended at planting:

Command 1 pt + Touchdown 30 oz 5/25.

Applied 130 lbs K according to soil test + 100 lbs DAP 6/14.

1st post recommendation:

Sharpen 1 oz plus 1 qt propanil 6/20.

Applied 260 lbs urea + NBPT according to N-STaR and apply permanent flood 6/20. Scum was prevalent after flooding but the recent rains have reduced the problem.

Grizzly Z ( Lambda-cyhalothrin) was applied at 1-35 for FAW on 7/14.

Only 5% positive stops for sheath light lesions found and no blast disease.

Total rainfall amount 10.8”.

More sheath blight has shown up late but low on the plant. No recommendation.




Lee Roy J 4-18-14


65 lbs/acre

CruiserMaxx Rice


16 plants ft2

Draining Applied Command 12.8 oz at planting.

1st post recommendation:
Propanil 4 qts + Facet 0.66 lb + Permit 1 oz applied 5/14.

No pre-flood herbicide recommendation warranted: Applied 170 lbs Urea fertilizer + NBPT according to N-STaR 5/28 and flood.

Mid-season 100 lbs urea was applied 6/24.

No disease at this time.

Rainfall amount since planting 14.83”.

The field has uneven heading. No disease or stink bugs. DD-50 drain date 8/21. Actual drain date 8/24.


Lincoln CL XL745 5-7-14


28 lbs/acre




7 plants ft2

100% Headed Due to weather no pre-emergence herbicides were applied.

1st post recommendation:   Applied Facet 0.5 lb + Command 12.8 oz + Superwham 3 qts applied 5/23.

100 lbs ammonium sulfate +

150 lbs DAP applied 6/6.

2cd post recommendation: Permit Plus .75 oz 6/17.

Applied 240 lbs urea + NBPT according to N-STaR and established permanent flood 6/5.

Due to delay in herbicide application and change in recommendation due to wind and soybean fields nearby, barnyardgrass escapes are scattered throughout field.

Three patties were sprayed with 15 oz Clincher fb 10 oz on 7/9 giving sufficient barnyardgrass control.

Late boot urea (70 lbs) applied 8/1.

Positive stops for sheath blight reached 50%.

Quilt Xcel at 18 oz was applied 8/1 for control.

Rainfall amount totals 9.00”. Drain date 8/23. Still pumping due to uneven heading.

Lonoke CL151 5-6-14


65 lbs/acre

CruiserMaxx Rice + Zinc


16 plants ft2

Draining Recommendation at planting:

Roundup 1 qt + Command 1 pt

1st post recommendation:

Newpath 4 oz + RiceBeaux 2.5 qts + Command 8 oz 5/27.

Applied 100 lbs DAP 5/28.

2cd post recommendation:

Clearpath .5 lb + Propanil 2 qts 6/10.

Apply 200 lbs urea + NBPT according to N-STaR and establish permanent flood 6/17.

Applied mid-season 100 lbs urea on 7/10.

Positive stops for sheath blight 35%.

Applied 19 oz Stratego on 7/28.

The field received a rainfall total of 14.45” since planting. The field is very uniform. Stopped pumping 3 weeks ago. Due to zero grade and rain water the flood has been maintained until now.




Prairie Roy J 4-17-14


115 lbs/acre

No Treatment


30 plants ft2

Maturity Burndown and pre-emergence herbicides for Cattails in a no-till overwintered continual flooded field. Recommendation:

3 qt Roundup Power Maxx + 1 oz Sharpen + 1 pt MSO applied at planting.

Due to flooding in the wildlife refuge the field has had a permanent flood all year.

Applied urea 100 lbs 5/27.

Applied urea 100 lbs + DAP 100 lbs 6/3.

Applied Rebel EX 20 oz + 1 qt COC 6/18.

Applied 100 lbs urea 6/19.

Applied 19 oz Stratego on 7/23. Gramoxone drift was observed on 8/5.

Total rainfall 14.2”. DD-50 drain date 8/21. Actual drain date 8/15. Ready for harvest.

St Francis Mermentau 4-11-14


78 lbs/acre

CruiserMaxx Rice


27 plants ft2

Draining Recommendation at planting.

Roundup 1 qt + Command 12.8 oz + League 3.2 oz –

Herbicides were continually activated by rainfall totaling 5.1” and provided excellent weed control for 45 days.

1st post recommendation:

Facet 0.33 lb + League 3.2 oz + 1 qt crop oil applied 5/28. Apply 270 lbs urea fertilizer + NBPT according to N-STaR and establish permanent flood 5/29.

Few pigweeds are now dying from the flood.

No stink bugs at this time. Only 1-2 sheath blight lesions were found low at the water line.

The field has received 12.50” of rain. Drain date according to DD-50 8/20. Actual drain date 8/22.



Monroe Roy J 5-8-14


90 lbs/acre

Apron Maxx


17 plants ft2

100% Headed Recommendation at 3 leaf stage:

Superwham 3 qts + League 3.2 oz + COC 1 pt applied 5/23.

Applied 100 lbs DAP according to soil test 5/8.

2cd post recommendation:

Facet .33 lb + League 3.2 oz + crop oil 1 pt.

Apply 190 lbs urea + NBPT and establish permanent flood.

Applied mid-season 100 lbs urea 7/9.

No disease or stink bugs at this time. Total Rainfall 14.80”. Heading is uneven so still pumping water.

Clay CL 151 4-2-14




Field progressing well. Maintaining a deep flood. Ready to drain by the end of next week.


Cross Jupiter 5-7-14


100% Headed Rice continues to improve. RSB count has increased to 6.5 per ten sweeps. Treatment is needed due to uneven heading. Karate at 1-70 scheduled to go out. Maintaining a deep flood.
Lawrence Mermentau 4-13-14


Maturity Field has been drained and 90% of the field has reached maturity. Grower will cut sample next week.
White Cheniere 5-5-14


100% Headed Grain filling in rapid progress. Maintaining good flood. RSB count 2 per 10 sweeps.
Yell Mermentau Drilled 100% Headed Field continues to progress well and is 100% headed. RSB count 2 per ten sweeps. No treatments are recommended at this point other than maintaining a deep flood. Heading is uneven so holding the water longer will be required.


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