Rice Research Updates for Entomology Moneen Jones, Research Entomologist Delta Research Center
Regulatory Issues AV-1011-blackbird repellent applied to rice seed Active ingredient = anthraquinone Arkion Life Sciences makers of AV-1011 Others (Texas, Louisiana, Arkansas, Mississippi ) trying to obtain a Special Local Needs 24(c) label for for 2015
Regulatory Issues (cont.) Working with Arkion and TDA to obtain 24(c) Only applied to seed- --not foliar application to heading rice, but maybe in the future???
Regulatory Issues (cont.) Texas trying to obtain a Section 18 for Endigo for rice stink bug Endigo active ingredient = thiamethoxam (neonicotinoid) + Karate Good residual control---will help delay resistance
Rice Stink Bug
LC50 (ug/vial) LC 50 of RSB Exposed to λ-cyhalothrin in Adult Vial Test. 2010 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0
Regulatory Issues (cont.) EPA not happy with neonics NipsIt INSIDE, CruiserMaxx Rice, Tenchu 20SG and Belay = neonics Bee kills in the Midwest (seed treatments on soybeans and corn) USA Rice Federation will meet with EPA next month to give our side of the story
Regulatory Issues (cont.) Drs. Mike Stout, Gus Lorenz, Steve Linscombe and Mo Way will provide comments in favor of neonics in rice No lubricant powder Rice is self-pollinating; flowers are not attractive to bees Seed treatments = safe; no drift; little exposure to nontargets (livestock, wildlife and humans) Very low rates (e.g. NipsIt INSIDE = 34g ai/a; CruiserMaxx Rice = 66g ai/a; 3G Furadan = 227 g ai/a!) Resistance management
Flowering rice Arrowhead Ducksalad
Regulatory Issues (cont.) Acephate Active ingredient in Orthene = acephate; NOT LABELED ON RICE!!! A shipment of US-grown rice to Costa Rica was rejected due to residues of acephate in the rough rice DO NOT APPLY ANY NON-LABELED PESTICIDES; ALWAYS FOLLOW LABEL INSTRUCTIONS!!!
Managing Pests in Main Crop Benefits Ratoon Crop!
RWW Sampling
RWW Core Processing
Stalk Borers Sugarcane borer Rice stalk borer Mexican rice borer Whitehead
Bayer Seed Treatments Antonio. Treatment Beaumont, TX. 2014. Rate (fl oz/cwt) RWW/5 cores on Jun 10 Yield (lb/a) Main Ratoon Total Untreated --- 108.8 A 7252 C 2997 B 10249 C Poncho 600 2 7.8 B 8377 AB 3401 AB 11778 A EverGol Energy 2 98.3 A 7579 BC 3009 B 10587 BC EverGol Energy + Poncho 600 2 + 2 9.3 B 8281 AB 3804 A 12085 A EverGol Energy + Poncho/Votivo 2 + 2.173 12.3 B 8516 A 3314 AB 11830 A Cruiser 600FS + 3.3 + 0.08 + Maxim + Apron XL 0.32 18.0 B 7893 ABC 3406 AB 11299 AB 1015 + 484 = 1499 lb/a
Valent Seed Treatments Cocodrie. Treatment Beaumont, TX. 2014. Rate (fl oz/cwt) RWW/5 cores on Jun 11 WHs/4 rows Untreated --- 97.0 A 3.3 CruiserMaxx Rice 7 15.8 B 3.0 Spirato 480FS + Sebring 0.08 + 0.40 + 318FS + NipsIt INSIDE 1.92 5.0 CD 4.3 Maxim 4FS + Apron XL + 0.08 + 0.32 + Dermacor X-100 2.5 7.0 BC 2.0 Spirato 480FS + Sebring 0.08 + 0.40 + 318FS + NipsIt INSIDE + 1.92 + 2.5 Dermacor X-100 1.3 D 2.3
Valent Seed Treatments Cocodrie. Treatment Beaumont, TX. 2014. Rate (fl oz/cwt) Yield (lb/a) Main Ratoon Total Untreated --- 7319 2552 9871 B CruiserMaxx Rice 7 7555 3100 10655 A Spirato 480FS + Sebring 0.08 + 0.40 + 318FS + NipsIt INSIDE 1.92 7937 3072 11010 A Maxim 4FS + Apron XL + 0.08 + 0.32 + Dermacor X-100 2.5 7701 3009 10710 A Spirato 480FS + Sebring 0.08 + 0.40 + 318FS + NipsIt INSIDE + 1.92 + 2.5 Dermacor X-100 7924 3095 11019 A 460 + 517 = 977 lb/a
Reduced Rates of Dermacor X-100 XL753. Treatment Beaumont, TX. 2014. Rate (fl oz/cwt) RWW/5 cores Jun 11 Jun 18 WH/4 rows Dermacor X-100 5 10.3 B 4.8 B 0.3 Dermacor X-100 4 4.8 C 4.8 B 0.8 Untreated --- 113.5 A 36.3 A 1.5
Reduced Rates of Dermacor X-100 XL753. Treatment Beaumont, TX. 2014. Rate (fl oz/cwt) Yield (lb/a) Main Ratoon Total Dermacor X-100 5 8826 4618 AB 13445 A Dermacor X-100 4 8760 4712 A 13472 A Untreated --- 8126 3972 B 12098 B 667 + 693 = 1360 lb/a
Rice Stink Bug, Oebalus pugnax Native to the Southeastern US Overwinters as adult in litter and grasses; builds up populations on grass weeds and grain sorghum then moves to heading rice
Cultural Control Plant early so heading does not coincide with high populations (populations tend > with time) Control grassy weeds in and around field Encourage uniformity in crop---reduces window of vulnerability
Genetic Control Most to least susceptible: short, medium and long grain (longer period of maturation)
Insecticidal Control Lost methyl parathion in 2013 4 pyrethroids, cabaryl and Tenchu 20SG (dinotefuran) Avg no. of applications for rice stink bug = 3-5 before Tenchu 20SG; now farmers spray 1-2 times Maybe Endigo?
New RSB treatment thresholds Projected yield (lb/acre) Average number of RSBs 1 /10 sweeps Heading Milk Soft dough Hard dough 4500 8 10 17 47 6000 10 14 22 63 7500 13 17 28 79 9000 16 21 34 94 1 Includes adults and older nymphs (4th and 5th instars). Need to revise for hybrids
Tenchu 20SG Section 3 Label In general, Texas farmers are happy with Tenchu 20SG, but some recent reports of less than expected control Data show Texas RSBs harder to control than RSBs in other states In 2013, Karate Z LC50 for LA RSBs only killed 15% of TX RSBs
Rice Stink Bug
No. RSB per 20 sweeps. Beaumont, TX. Treatment 2014. Rate (fl oz/a) 1 DAT 7 DAT 11 DAT 17 DAT Untreated --- 37.0 A 17.0 13.0 A 8.8 Endigo ZCX 5 3.3 C 10.0 1.3 E 5.3 Endigo ZCX 6 3.0 C 4.0 5.3 BC 7.8 Karate Z 1.92 8.0 BC 3.8 6.5 B 3.5 Karate Z 2.56 3.8 C 4.3 3.8 BCD 4.0 Tenchu 20SG 9 oz prod/a 5.3 BC 4.0 2.8 CDE 3.8 Dimethoate 4EC 1 pt/a 10.8 B 4.0 5.0 BC 6.8 Sevin XLR Plus 1.5 lb ai/a 6.0 BC 4.3 1.5 DE 5.5
Thanks to my Super Hero Entomology Crew: Jessica Duckworth i.e. Batman Summer Noble i.e. Spiderman Leonard Boyd
Any Questions? Contact: Dr. Moneen Jones (Dr. Mo) 573-379-5431 (Work) 573-391-4042 (Cell) jonesmon@missouri.edu (e-mail) http://bootheelagpestmanagement.wordpress.com/ (blog) https://twitter.com/bootheelbuglady (twitter)