TITLE    (click title to view slides)

Implementing MB Alternatives in GA

Stanley Culpepper
Extension Weed Specialist
University of Georgia
Tifton, GA

DOWNLOAD PRESENTATION    (right click and select 'Save Target As...')

• PowerPoint - 5.9 MB
• PDF - 3.0 MB

TABLE OF CONTENTS

Implementing MB Alternatives in GA Loss of Methyl Bromide Viable MB Fumigant Alternatives MIDAS MIDAS Non-treated MIDA vs MB MIDAS MIDAS 350 lb/A Broadcast MIDAS DMDS (Paladin) DMDS (Paladin) Photo DMDS (Paladin) Non-treated DMDS vs MB Percent yellow nutsedge control at harvest as impacted by DMDS rate Percent large crabgrass control at harvest as impacted by DMDS rate Photo DMDS (Paladin) DMDS 60 G, Blockade vs DMDS 70 G, LDPE DMDS (Paladin) Telone/Pic/Vapam Telone II fb Cholorpicrin fb Vapam 3 Way vs MB Number of Nutsedge Plants/A with MB Alternatives in Pepper. Number of Amaranth Plants/A with MB Alternatives in Pepper. MB, MIDAS, DMDS application 8" deep Telone II Application 12 to 14" deep Chloropicrin placed 8 inches deep Note moisture and compaction Photo Metam Application Other Things I Need To Know Other Things I Need To Know Telone II fb Vapam or Pic or Pic fb Vapam Other Things I Need To Know Other Things I Need To Know Telone + Chloropicrin (100 lb) followed by Vapam Other Things I Need To Know Telone II fb chloropicrin Other Things I Need To Know Percent Purple Nutsedge Control by MB Alternative Systems Percent Purple Nutsedge Control by MB Alternative Systems Other Things I Need To Know Percent Purple Nutsedge Control by MB Alternative Systems Percent Purple Nutsedge Control by MB Alternative Systems Other Things I Need To Know Comparing MB Alternatives Bigger Issue than Loss of MB? Plasticulture - Best Case Bareground - Best Case Bigger Issue than Loss of MB? Bigger Issue than Loss of MB? Fumigant RED's Fumigant RED's Research Objectives Chlropicrin Released for Bare Soil Questions or Comments?

SLIDE CONTENTS

Implementing MB Alternatives in GA University of Georgia Tifton Campus Loss of Methyl Bromide Viable MB Fumigant Alternatives MIDAS (methyl iodide plus chloropicrin) DMDS (dimethyl disulfide plus chloropicrin) Trade Name will be Paladin Telone II fb chloropicrin fb Vapam (3-WAY) MIDAS Labeled in 2008. Application procedure similar to MB. MIDAS Labeled Application procedure similar to MB. MIDAS is a 50:50 or 98:2 mix with Pic Use rate similar to MB Non-treated MIDAS MB MIDAS EUP (Experimental Use Permit) Application procedure similar to MB MIDAS is a 50:50 or 98:2 mix with Pic Use rate similar to MB Reduce use rate 40% under VIF mulches. MIDAS 350 lb/A Broadcast LDPE VIF MIDAS Broadcast rate of 98:2 under high barrier mulch Spring: 100 lb Fall: rate needed above label Broadcast rate of 50:50 under high barrier mulch Spring: 175 to 200 lb Fall: rate needed is above label EUP was in effect for 2008, labeled late spring early summer 2009? DMDS (Paladin) EUP 2008, labeled 2009? 79:21 mixture with chloropicrin. Same application procedures as MB. DMDS (Paladin) EUP 2008, labeled 2009? 79:21 mixture with chloropicrin Same application procedures as MB Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds. DMDS (Paladin) Non-treated DMDS MB Percent yellow nutsedge control at harvest as impacted by DMDS rate. TyTy, GA 2008.* 98 a 50 G 30 G 40 G DMDS Rate 100 a 99 a 98 a 60 G Percent large crabgrass control at harvest as impacted by DMDS rate. TyTy, GA 2008.* 50 G 30 G 40 G DMDS Rate 75 a 66 b 49 c 60 G 33 d EUP 2008, labeled 2009? 79:21 mixture with chloropicrin Same application procedures as MB Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds. Must use high barrier mulch DMDS (Paladin) DMDS 60 G, Blockade DMDS 70 G, LDPE DMDS (Paladin) EUP 2008, labeled 2009? 79:21 mixture with chloropicrin. Same application procedures as MB. Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds. Must use high barrier mulch. Smell and cost must be addressed. Telone/Pic/Vapam Labeled, strongly encouraged to try for spring applications Telone II fb Chloropicrin fb Vapam 2006 2004 MB 3 Way Number of Nutsedge Plants/A with MB Alternatives in Pepper. Spring 2007.* Number of Amaranth Plants/A with MB Alternatives in Pepper. Spring 2007.* MB, MIDAS, DMDS application 8” deep Telone II Application 12 to 14 “ deep Chloropicrin placed 8 inches deep Note moisture and compaction Metam Application 1. Do I need Telone, Pic, and Vapam? Other Things I Need To Know Do I need Telone, Pic, and Vapam? how many crops? what crops? what weed pressure? what disease pressure? If you don’t use all 3 can you sustain success? Other Things I Need To Know Telone II fb Vapam LDPE mulch V4-05, 60 DAT Telone II fb Pic LDPE mulch Telone II fb Pic fb Vapam LDPE mulch 2. Can I apply my Telone and chloropicrin together (C35 or Pic Chlor 60)?? Other Things I Need To Know 2. Can I apply my Telone and chloropicrin together (C35 or Pic Chlor)?? Vapam = 4 inches Chloropicrin = 8 inches Telone = 12 inches Ideal Placement Other Things I Need To Know Telone + Chloropicrin (100 lb) followed by Vapam Pic 8 “ deep Pic 12 “ deep 3. Interval between fumigating and planting??? Other Things I Need To Know VIF LDPE Telone II fb chloropicrin Transplanted 21 DAT 4. Do we need alternative mulch with 3-WAY? Other Things I Need To Know Percent Purple Nutsedge Control by MB Alternative Systems. Ponder, Spring 2007. Plots were 1 bed by 50 feet, evaluations are at pepper harvest. 93 a 99a Percent Purple Nutsedge Control by MB Alternative Systems. Ponder, Spring 2007. Plots were 1 bed by 50 feet, evaluations are at pepper harvest. 93 a 99a 75b 82 b 5. Spring vs. fall application in GA??? Other Things I Need To Know Percent Purple Nutsedge Control by MB Alternative Systems. Ponder, Spring 2008. 99a Plots were 1 bed by 50 feet, evaluations are at pepper harvest. Soil temp 60 F. 99 a 99 a 99 a 99a Percent Purple Nutsedge Control by MB Alternative Systems. Ponder, Fall 2007. 87 ab 98a 93ab 85 b 70 c Plots were 1 bed by 50 feet, evaluations are at pepper harvest. Soil temp 93 F. Other Things I Need To Know 6. Control weeds before and IMMEDIATELY after the crop is produced *The goal is to eliminate seed or tuber production….glyphosate is more effective than paraquat on nutsedge, tillage great option after last crop on mulch. Comparing MB Alternatives Mulch - + - Smell - + + Nutsedge + +/- + Annual grasses - + + Broadleaf weeds - + + Application Procedure + - + DMDS 3-WAY MIDAS Bigger Issue than Loss of MB? Plasticulture – BEST CASE Reduce GA farm income: $20.4 mil Reduce output value: $73.1 mil Reduce labor income: $35.1 mil Eliminate 775 workers BAREGROUND – BEST CASE Eliminate production dependent on fumigants Bigger Issue than Loss of MB? Bigger Issue than Loss of MB? BUFFER RESTRICTIONS FOR ALL FUMIGANTS Fumigant RED’s Buffer distances to homes or occupied structures Right-of-way buffer zones Buffer zones adjacent to areas treated the previous day Respiratory requirements Warning zones Notification of state agency Fumigant management plan Buffer distances to homes or occupied structures Right-of-way buffer zones Buffer zones adjacent to areas treated the previous day Respiratory requirements Warning zones Notification of state agency Fumigant management plan Fumigant RED’s Address the variables actually impacting gas emissions! Soil moisture Soil texture Soil temperature Soil compaction Mulch types Application procedures Research Objectives Questions or Comments?