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Table 6 Treatments applied to Hamlin sweet orange trees in a three-year field trial (2015–2018) at CREC-Lake Alfred, FL

From: Evaluation of the control effect of SAR inducers against citrus Huanglongbing applied by foliar spray, soil drench or trunk injection

Treatmenta

Applications

Application dates

Numberb

Ratec (g/tree)

Volume (mL/tree)

2015 & 2016

2017

2018

UTC

6

–

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

ASM spray

6

0.25

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

ASM spray

6

0.5

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

ASM soil drench

6

0.25

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

ASM soil drench

6

0.5

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

ASM trunk injection

3

0.125

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

ASM trunk injection

3

0.25

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

IMI spray

6

0.25

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

IMI spray

6

0.5

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

IMI soil drench

6

0.25

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

IMI soil drench

6

0.5

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

IMI trunk injection

3

0.125

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

IMI trunk injection

3

0.25

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

INA spray

6

0.25

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

INA spray

6

0.5

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

INA soil drench

6

0.25

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

INA soil drench

6

0.5

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

INA trunk injection

3

0.125

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

INA trunk injection

3

0.25

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

SA spray

6

0.25

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

SA spray

6

0.5

2000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

SA soil drench

6

0.25

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

SA soil drench

6

0.5

4000

11/2, 2/2, 4/5, 6/3, 8/5, 10/10, 12/8

2/1, 4/6, 6/8, 8/10, 10/12, 12/7

2/5, 4/3, 6/7, 8/9, 10/12

SA trunk injection

3

0.125

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

SA trunk injection

3

0.25

400

11/3, 2/3, 6/4, 10/11

2/2, 6/9, 10/13

2/6, 6/8, 10/15

  1. a UTC: untreated control, ASM: acibenzolar-S-methyl, IMI: imidacloprid, INA: 2,6-dichloroisonicotinic acid, SA: salicylic acid
  2. b Number of applications per year
  3. c Amount of treatment (a.i.) per tree per application