REDUCING THE COST OF WEED MANAGEMENT FOR CONTAINER GROWN ORNAMENTALS SALI BAROLLI PLANT HEALTH MANAGER IMPERIAL NURSERIES, INC.

Transcription

1 REDUCING THE COST OF WEED MANAGEMENT FOR CONTAINER GROWN ORNAMENTALS SALI BAROLLI PLANT HEALTH MANAGER IMPERIAL NURSERIES, INC. GRANBY, CT

2 OVERVIEW OF THE OPERATION AT IMPERIAL NURSERIES Located in Granby CT., 15 ml Northwest of Hartford. Approximately 225 acres container grown crops. Over wintering hoophouses constructed in pairs. 14 ft. wide with 3 ft. aisle between. Product line includes: - rhododendron, asst. broadleaf and needled evergreens, deciduous shrubs, ornamental trees, perennials and roses. - maintain a 30 acre field grown liner production. Business also includes a 400 acres container growing facility in Quincy FL.

3 INTEGRATED WEED MANAGEMENT PROGRAM STARTING POINT: - Over wintering structures ( hoophouses ) in Northeastern U.S. - Traditional herbicide applications with hand-held rotary spreaders. - High cost of weed control and hand weeding that alone averaged $ 800/A. - Weed control not good. INTEGRATED FACTORS: - Master plan. - Herbicide selection. - Immediate coverage of newly potted plants. - Efficient application methods. - Escape weed control & hand weeding. - Non crop seed source control. - Experimental work.

4 IMPROVED SYSTEM TO APPLY HERBICIDES WAS NEEDED: In 1999 all herbicides applied by hand cranking granules. Precision and uniformity of application was poor. High cost: - labor requirements for application were high. - granular herbicides that were used very expensive.

5 EVOLUTION OF HERBICIDES PROGRAM 1999: - All granular applications by hand : - March - April, - one backpack spray. - May - Aug, - overhead boom. - Sep - Oct, - hand cranking of granules. 2002: - Fall granular now applied with Orbit-Air Continue: Fine tune the program.

6 CURRENT PROCEDURE 2005 Application timing Method First, - Spring, before plastic removal, or day after potting. Second, third, or fourth 8 week intervals Last, - Fall Backpack spray High clearance boom Orbit-Air, granules

7 PROGRAM NOW INVOLVES Gallery 75 DF 1 lb/a plus: - Barricade 4 FL 21 oz/a - Surflan A.S./Prozylin 4L 2 qt/a, (three or four times a season). SureGuard ( two application/year, labeled plants only) - followed by: OH-2 granules in Fall.

8 TREATMENT PROTOCOL FOR SPRAYING Wet foliage dew or 5 to 10 minutes irrigation. Spray. Irrigate ASAP minutes to wash off herbicides. Wind not more than 5-10 mph.

9 FIRST APPLICATION - BACKPACK Start before the plastic covers are removed in spring. The hoophouses are vented. We use backpacks equipped with a KLC-5 nozzle, ( Spraying System Co ). Spray swath 14-ft. Two passes at 3 ft/sec speed. We apply 14 gal/a.

10 First pass with backpack spray

11 Second pass with backpack spray

12 KLC-5 nozzle - for backpack spray

13 50 GAL-TANK MIX Used for mixing herbicide solution for backpack applications. Hydraulic agitator. When the solution inside, the pump is on.

14 50 gal Tank Mix 50 gall Tank Mix

15 TWO-SECTION HIGH CLEARANCE BOOM Used for 2 nd, 3 rd and if, 4 th applications. Very productive, can spray over 35 acres per day. Is operated by two people ( one driver and a helper). Another person needed to turn irrigation on and off.

16 TWO-SECTION HIGH CLEARANCE BOOM Mounted on a John Deere 6000 tractor. Fabricated out of extruded aluminum. Equipped with Turbo FloodJet nozzles - ( TF-5, Spraying System Co ) Spaced at 40 inch. Spray width up to 101 ft. Can spray 50 or 25 ft. width. At 2 mph the sprayer applies 50 gal/a. Tee Jet 844 Sprayer Control.

17 The boom The boom width width 101 feet 101 feet

18 Spraying with the boom

19 Spraying with 50% of the boom ( one block of hoophouses)

20 Spraying with 25 % of the boom

21 Both sides fold for driving

22 Turbo FloodJet Nozzle, TF-5

23 ADDITIONAL ADVANTAGES TO HIGH CLEARANCE BOOM Precision application. Applications made when conditions are the best, - low wind, wet foliage -. Greatly reduced treatment times.

24 Hand crank granules Hand crank granules

25 FALL GRANULAR APPLICATION ORBIT-AIR, GANDY SPREADER Used a Gandy Orbit-Air model 64FS12. Mounted on a tractor bucket loader. Pass over single rows of 14-ft hoop houses. Capacity 350 lbs. Computerized control of rate. - Raven Monitor-controlled Orbit-Air. - Electric speed controlled monitor system by Raven. Can cover over 10 acres per day.

26 Orbit - Air Spreader

27 Orbit-Air spreader

28 Orbit-Air spreader

29 Test for the uniformity of application

30 HAND CRANKING OF GRANULES VS. ORBIT-AIR SPREADER AT DESIRED RATE OF 120 lb/a OF OH-2 Method Spyker, hand cranking Orbit-Air Rate range for ( lb/a) 91 to to 136 Variability 49 % 18 %

31 MAN-HOURS SPENT ON FALL GRANULAR APPLICATIONS Year Method of Applications Hours worked for 130 acres Savings ( % ) 2001 Spyker ( Hand cranking ) Orbit-Air Orbit-Air Orbit-Air

32 TREATMENT PROTOCOL FOR GRANULAR APPLICATIONS Dry foliage. Irrigate minutes, to wash off the granules. Wind not more than 5-10 mph.

33 TREATMENTS ON NEWLY POTTED PLANTS Backpack spray with a KLC-5 nozzle. Apply next day or not more than 48 hours after potting. Backpack spray - very flexible to use after potting.

34 NON CROP CONTROL Boom-application early spring on the sides of hoophouses. Backpack - application on the aisles in early spring. Second, third and if fourth applications are covered by high clearance boom. Spot treatments 2 to 3 time a year.

35 NON CROP BOOM SPRAYER FMC 100 gal tank. One side boom with 4 nozzles. Nozzle type 800-VS, spaced at 40 inch. 50 gall gal /A at 3 mph. Used Simazine 4L 4 qt/a + Surflan A.S. 4 qt/a. Used in early Spring for non crop application on the expended areas of the houses. Used throughout the season for non crop applications.

36 Non-crop boom sprayer Non-crop boom sprayer

37 ESCAPE WEED CONTROL & HAND WEEDING Before each application - hand weeding is done. Hand weeding, not more than 1-2 days prior to scheduled applications. If for any reason weeds are ready to seed before scheduled application, weeds are pulled and half rate of preemerge herbicide applied. No post emerge application needed or done.

38 BACKPACK FOR NON CROP AREAS Used for non crop application on the aisles between two hoop houses and other areas. Nozzle used, 8004-VS Pressure 20 PSI. Speed 3 sec/ft. Used:- Roundup-Pro + Simazine,, or - Roundup-Pro + Surflan and Barricade - Gramoxone Maxx + Simazine,, etc.

39 SOME EXPERIMENTAL WORK DONE OR IN PROCES AT IMPERIAL NURSERIES Evaluation of sprayable herbicides for container- grown ornamentals. Herbicide for newly planted container-grown woody ornamentals. Longevity of weed control with herbicides for ornamental containers. Tolerance of deciduous shrubs to fall applications of herbicides on mature senescing foliage. Evaluation of new herbicide Showcase at Imperial Nurseries. Goal 4F vs. Goal 2XL on ornamental containers.

40 REPLACING STANDARD APPLICATIONS WITH SUREGUARD Used on 15 acres of Dwarf Alberta Spruce. 2 application for the season. Applications done in 12 week intervals. Standard spray program for the season: - 2 application, Gallery 75 DF+ Barricade 4 FL - 1 application Gallery 75 DF + Surflan A.S. - application every 8 weeks. Weed control very good.

41 COST OF SUREGUARD VS. STANDARD APPLICATIONS Herbicide Gallery + Barricade Rate per acre 1 lb/a 21 oz/a $ per acre No. of applications per season 2 Total $ 269 $ per season Standard Gallery + Surflan 1 lb/a 2 qt/a SureGuard 10 oz/a ( 29 % )

42 LABOR FOR GRANULAR AND LIQUID APPLICATIONS Methods Hand crank granules Orbit-Air spreader Backpack sprayer High clearance boom Man-hours per acre % savings

43 $ SPENT FOR WEED CONTROL Year Man-hours for hand weeding $ for hand weeding $ for herbicides Total $ , , , , , , , , , , ,380 56, , , ,350 58, , ,826

44 BOTTOM LINE COSTS PER PLANT AT IMPERIAL NURSERIES Year Weeding labor in cents Herbicides in cents Total cents per plant % savings