CRDF Grower Bactericide Field Trials
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1 CRDF Grower Bactericide Field Trials Version 1, 4/3/17 Citrus Research & Development Foundation 1
2 CRDF Grower Bactericide Field Trials Purpose To gather as much data as possible to provide growers with more information on use of Mycoshield, Fireline and Firewall by evaluating grower bactericide programs in simple field trials Variability between trials Any adjuvant, tank mix, timing etc. All regions Any variety Citrus Research & Development Foundation 2
3 Grower Bactericide Field Trials - Trial Locations CRDF Evaluated Trials Other Evaluator Variety Number of Trials Valencia 41 Hamlin 16 Grapefruit 11 Other 6 3
4 Grower Bactericide Field Trials - Trial Set-up Side-by-side blocks Untreated rows within a treated block Treated Untreated Rows Block 1 Block 2 Treated Block 4
5 Grower Bactericide Field Trials - Evaluation Methods Disease Severity (Disease Indexing) Divide canopy into quadrants Score each quadrant for visible symptoms on the -5 scale Score the quadrants of both sides of the tree Combine scores for a -4 DI 5
6 Grower Bactericide Field Trials - Evaluation Methods Disease Severity (Disease Indexing) Foliar disease symptoms on <% of the quadrant. A dense quadrant with no twig dieback and minimal blotchy mottle. Foliar disease symptoms on - 4% of the quadrant. Dense quadrant, some twig dieback, some blotchy mottle, and possibly some tufted growth on the canopy. Foliar disease symptoms on 4 6% of the quadrant. Thinning quadrant with noticeable twig dieback and a few areas of open canopy. Blotchy mottle of leaves is common and some tufted growth is apparent. Foliar disease symptoms on 6 8% of the quadrant. Abundantly thin quadrant with obvious twig dieback. The majority of the branches have blotchy mottle and/or tufted growth. Foliar disease symptoms on >8% of the quadrant. The decline has resulted in dieback of large branches and remaining leaves are small, have blotchy mottle and may be deformed 6
7 Grower Bactericide Field Trials - Evaluation Methods Other Evaluation Methods PCR (copy number or C t ) Fruit Drop Yield For more information see Field Trial Evaluation Methods for Growers on the CRFD website 7
8 AB ABC BC ABC CRDF Bactericide Trial One year, 6 yo Hamlin 4 replications, 6 trees per replication 3 applications (spring, summer & fall) AB C AB Disease Severity ABC AB AB AB A AB AB A AB No significant improvement in health AB AB B B DI Jan16 DI May 16 DI Aug. 16 DI Nov. 16 DI Feb. 17 UTC OTC-1 OTC-2 Streptomycin 8
9 CRDF Bactericide Trial 7. % Fruit Drop & Yield (kg) A AB AB AB AB A A A. 1.. % Fruit Drop Yield Kg -Foliar OTC1-Foliar OTC2-Foliar Strep-Foliar No significant differences between treatments 9
10 CRDF Bactericide Trial 35 Fruit Quality Lbs Solids Brix/Acid Ratio Color UTC OTC-1 OTC-2 Streptomycin No significant differences between treatments 1
11 Grower Bactericide Field Trials - Trial Results Variable results Disease severity data shows little separation between treatment and control PCR results extremely variable Some separation between treatment and controls in fruit drop and yield PCR results are reported as copy number, this is a measure of the individual bacterial cells. 11
12 Untreated For these tables, when the p value is.5 or less, then the treatment is significantly different from the untreated control. Grapefruit Grapefruit-3 Grapefruit-1 N Mean Std Error Mean Std Error DI April p =.62 DI Sept p =.3387 DI Oct p =.1219 DI Nov p =.5511 DI Jan p =.7 DI Jan p =.368 CopyNumberPer1ngDNA_April p =.1518 CopyNumberPer1ngDNA_Jan p =.349 FruitDropPercent_Jan p =.21 YieldKg_Jan p =.972 Grapefruit-3 N Mean Std Error Mean Std Error DI April p =.3867 DI Sept p =.259 DI Oct p =.573 DI Nov p =.6 DI Jan p =.145 DI Jan p =.2252 CopyNumberPer1ngDNA_April p =.358 CopyNumberPer1ngDNA_Jan p =.4591 FruitDropPercent_Jan p = <.1 YieldKg_Jan p =.1 12
13 Untreated Grapefruit-5 Grapefruit Grapefruit-5 N Mean Std Error Mean Std Error DI May p =.2167 DI uly p =.5311 DI Aug p =.99 DI Sept p =.1151 DI Oct p =.9 DI Nov p =.18 DI Jan p =.7941 CopyNumberPer1ngDNA_May p =.3465 CopyNumberPer1ngDNA_Dec p =.7151 CopyNumberPer1ngDNA_Jan p =.4536 FruitDropPercent_Dec p = <.1 YieldKg_Dec p = <.1 Grapefruit-6 N Mean Std Error Mean Std Error DI May p =.1158 DI uly p =.396 DI Aug p =.632 DI Sept p =.6873 DI Oct p =.1948 DI Nov p =.85 DI Jan p =.89 CopyNumberPer1ngDNA_May p =.1346 CopyNumberPer1ngDNA_Dec p =.72 CopyNumberPer1ngDNA_Jan p =.1283 FruitDropPercent_Dec p = <.1 YieldKg_Dec p = <.1 13
14 Untreated Grapefruit-7 Grapefruit Grapefruit-7 N Mean Std Error Mean Std Error HLBDIMax4_May p =.3947 HLBDIMax4_July p =.2392 HLBDIMax4_Aug p =.277 HLBDIMax4_Sept p =.4672 HLBDIMax4_Oct p =.9243 HLBDIMax4_Nov p =.6727 HLBDIMax4_Jan p =.5275 CopyNumberPer1ngDNA_May p =.664 CopyNumberPer1ngDNA_Dec p =.367 CopyNumberPer1ngDNA_Jan p =.312 FruitDropPercent_Dec p =.475 YieldKg_Dec p =.9466 Grapefruit-8 N Mean Std Error Mean Std Error HLBDIMax4_May p =.3112 HLBDIMax4_July p =.6715 HLBDIMax4_Aug p =.729 HLBDIMax4_Sept p =.864 HLBDIMax4_Oct p =.9457 HLBDIMax4_Nov p =.7164 HLBDIMax4_Jan p =.3863 CopyNumberPer1ngDNA_May p =.124 CopyNumberPer1ngDNA_Dec p =.3496 CopyNumberPer1ngDNA_Jan p =.852 FruitDropDec_ p =.97 14
15 Untreated Hamlin-1 Hamlin Hamlin-1 N Mean Std Error Mean Std Error DI March p =.8884 DI Sept p = 1 DI Oct p =.6261 DI an p =.6168 CopyNumberPer1ngDNA_March p =.54 CopyNumberPer1ngDNA_Jan p =.7158 FruitDropJan p =.557 Yield (Boxes/Acre) 215 Hamlin-2 N Mean Std Error Mean Std Error DI March p =.655 DI Sept p =.341 DI Oct p =.6 DI an p =.3 CopyNumberPer1ngDNA_March p =.976 CopyNumberPer1ngDNA_Jan p =.316 FruitDropJan_ p =.32 Yield (Boxes/Acre)
16 Untreated Hamlin Hamlin-4 Hamlin-4 Hamlin-3 N Mean Std Error Mean Std Error DI April p =.661 DI Sept p =.32 DI Oct p =.1387 DI Nov p =.6191 DI Feb p =.7168 CopyNumberPer1ngDNA_April p =.2 CopyNumberPer1ngDNA_Dec p =.4998 FruitDropPercent_Dec p =.6334 YieldKg_Dec p =.1891 N Mean Std Error Mean Std Error DI May p =.683 DI Sept p =.4 DI Oct p =.834 DI Oct p = <.1 DI Octave p =.13 DI Nov p =.68 DI an p = <.1 CopyNumberPer1ngDNA_May p =.1782 CopyNumberPer1ngDNA_Dec p =.1598 FruitDropPercent_Dec p =.33 YieldKg_Dec p =.48 16
17 Untreated Hamlin-5 Hamlin Hamlin-5 N Mean Std Error Mean Std Error DI May p = <.1 DI Sept p =.768 DI Oct p =.82 DI an p =.22 CopyNumberPer1ngDNA_May p =.6655 CopyNumberPer1ngDNA_Jan p =.4531 FruitDropPercent_Jan p =.137 Hamlin-6 N Mean Std Error Mean Std Error DI May p = <.1 DI Sept p =.849 DI Oct p =.762 DI Jan p =.79 CopyNumberPer1ngDNA_May p =.3248 CopyNumberPer1ngDNA_Jan p =.36 FruitDropPercent_Jan p =.368 YieldKg_Jan p =
18 Untreated Hamlin-7 Hamlin Hamlin-7 N Mean Std Error Mean Std Error DI May p =.527 DI Sept p =.2421 DI Oct p =.373 DI Jan p =.147 CopyNumberPer1ngDNA_May p =.212 CopyNumberPer1ngDNA_Jan p =.2545 FruitDropPercent_Jan p =.549 YieldKg_Jan p =.4663 Hamlin-8 N Mean Std Error Mean Std Error DI May p =.2 DI Sept p = <.1 DI Oct p =.38 DI Dec p =.596 CopyNumberPer1ngDNA_May p =.823 CopyNumberPer1ngDNA_Dec p =.4 FruitDropPercent_Dec p = <.1 YieldKg_Dec p =.72 18
19 Untreated Hamlin-9 Hamlin DI Baseline DI Oct DI March PCR Baseline PCR Jan 17 Fruit Drop Yield Ratio s Hamlin-9 N Mean Std Error Mean Std Error DI June p =.8 DI Sept p =.169 DI Nov p =.8818 DI _Jan p =.5623 CopyNumberPer1ngDNA_June p =.5145 CopyNumberPer1ngDNA_Dec p =.894 FruitDropPercent_Dec p =.125 YieldKg_Dec p =.114 Hamlin-1 s DI Baseline DI Oct DI March PCR Baseline PCR Jan 17 Fruit Drop Yield Ratio N Mean Std Error Mean Std Error p = p = p = p = <.1 p = p = p = p =
20 Untreated 35 Hamlin-11 Midsweet DI Baseline DI Oct DI March PCR Baseline PCR Jan 17 Fruit Drop Yield s Midsweet-1 N Mean Std Error Mean Std Error s Hamlin-11 Mean Std Error Mean Std Error DI Baseline p=.381 DI Oct p=.2 DI March p=.113 PCR Baseline p=.66 PCR Jan p=.499 Fruit Drop p=.882 Yield p=.9 Ratio p=.28 HLBDIMax4_March p =.6132 HLBDIMax4_Oct p =.7636 HLBDIMax4_Nov p =.2846 HLBDIMax4_Dec p =.7251 HLBDIMax4_Jan p =.355 CopyNumberPer1ngDNA_March p =.3274 CopyNumberPer1ngDNA_Jan p =.2742 FruitDropJan_ p =.7737
21 Untreated Midsweet Midsweet-3 Midsweet-2 N Mean Std Error Mean Std Error DI April p =.97 DI Oct p =.1825 DI Nov p =.769 CopyNumberPer1ngDNA_April p =.358 CopyNumberPer1ngDNA_Jan p =.2142 FruitDropPercent_Feb p =.6183 YieldKg_Feb p =.915 Midsweet-3 N Mean Std Error Mean Std Error DI April p =.1884 DI October p =.265 DI Nov p =.92 DI anuary p =.1279 CopyNumberPer1ngDNA_April p =.289 CopyNumberPer1ngDNA_Jan p =.733 FruitDropPercent p =.61 YieldKg_Jan p =.61 21
22 Untreated Parson Brown-1 Parson Brown DI Baseline DI Oct DI March PCR Baseline PCR Jan 17 Fruit Drop Yield Ratio DI Baseline DI Oct DI March PCR Baseline PCR Jan 17 Fruit Drop Yield Ratio s s Parson Brown-1 s Mean Std Error Mean Std Error DI Baseline p=.357 DI Oct p=.144 DI March p=.3274 PCR Baseline p=.124 PCR Jan p=.281 Fruit Drop p=.7996 Yield p=.647 Ratio p=.3146 Parson Brown-2 s Mean Std Error Mean Std Error DI Baseline p=.4 DI Oct p=.122 DI March p= <.1 PCR Baseline p=.312 PCR Jan p=.919 Fruit Drop p=.6182 Yield p=.8926 Ratio p=
23 Untreated Valencia-1 Valencia Valencia-1 N Mean Std Error Mean Std Error DI May p =.6727 DI Oct p =.19 DI Jan p =.159 CopyNumberPer1ngDNA_May p =.1492 CopyNumberPer1ngDNA_Jan p =.488 FruitDropPercent_Feb p =.171 YieldKg_Feb p =.71 Valencia-11 N Mean Std Error Mean Std Error DI May p =.5487 DI Oct p =.1852 DI Jan p =.82 CopyNumberPer1ngDNA_May p =.5851 CopyNumberPer1ngDNA_Jan p =.9 FruitDropPercent_Feb p =.914 YieldKg_Feb p =
24 Bactericideand Timing March-May June-Aug. Sept.-Nov. Trial Site RS Age Average DI Location FW FL MS FW FL MS FW FL MS Grapefruit-1 Sour <5 16 IR 2 2 Grapefruit-3 Sour <5 16 IR Grapefruit-5 Swingle + 21 IR 2 2 Grapefruit-6 Swingle + 21 IR 2 2 Grapefruit-7 Sour + 21 IR 2 2 Grapefruit-8 Sour + IR 2 2 Hamlin-1 Swingle + 21 R Hamlin-2 Swingle + 19 R Hamlin-3 Carrizo <5 SW 1 1 Hamlin-4 Sour + 25 IR Hamlin-5 Swingle <5 13 SW Hamlin-6 F SW Hamlin-7 Carrizo SW 2 2 Hamlin-8 Swingle <5 17 SW Hamlin R Hamlin-1 Swingle + 23 SW Hamlin-11 Carrizo + 23 SW Parson Brown-1 Cleo + 24 SW Parson Brown-2 Carrizo + 23 SW Midsweet-1 Swingle R Midsweet-2 Carrizo SW 1 1 Midsweet-3 Swingle SW 1 1 Valencia-1 Swingle IR Valencia-11 Swingle IR FW = Firewall FL = Fireline MS = Mycoshield 24
25 Untreated The PCR results for the following trials are reported as Ct values of 1-4. The higher the number, the less bacteria in the sample. Hamlin-12 Hamlin DI Spring DI Winter Ct Spring Ct Winter DI Spring DI Winter Ct Spring Ct Winter Hamlin-12 Mean Std Error Mean Std Error DI Spring p =.15 DI Winter p =.39 Ct Spring p =.83 Ct Winter p =.77 Yield Hamlin-13 Mean Std Error Mean Std Error DI Spring p =.91 DI Winter p =. Ct Spring p =.1 Ct Winter p =.2 Yield
26 Untreated Hamlin-14 Hamlin DI Spring DI Winter Ct Spring Ct Winter. DI Spring DI Winter Ct Spring Ct Winter Hamlin-14 Mean Std Error Mean Std Error DI Spring p =.6 DI Winter p =.89 Ct Spring p =.26 Ct Winter p =.47 Yield Hamlin-16 Mean Std Error Mean Std Error DI Spring p = <.1 DI Winter p =.21 Ct Spring p =.53 Ct Winter p =.3 Yield
27 Untreated Hamlin-17 Midsweet DI Spring DI Winter Ct Spring Ct Winter 23 DI Spring DI Winter Ct Spring Ct Winter Hamlin-17 Mean Std Error Mean Std Error DI Spring p =.12 DI Winter p =.9 Ct Spring p =.21 Ct Winter p =.82 Yield Midsweet-4 Mean Std Error Mean Std Error DI Spring p =.615 DI Winter p =.3 Ct Spring p =.5532 Ct Winter p =.5165 Yield
28 Untreated 4. Valencia Valencia DI Spring DI Winter Ct Spring Ct Winter. DI Spring DI Winter Ct Spring Ct Winter Valencia-28 Mean Std Error Mean Std Error DI Spring p =.23 DI Winter p =. Ct Spring p =.37 Ct Winter p = <.1 Valencia-31 Mean Std Error Mean Std Error DI Spring p =.28 DI Winter p =.2 Ct Spring p = <.1 Ct Winter p =.2 28
29 Untreated Valencia-32 Valencia DI Spring DI Winter Ct Spring Ct Winter 23 DI Spring DI Winter Ct Spring Ct Winter Valencia-32 Mean Std Error Mean Std Error DI Spring p =.834 DI Winter p =.1627 Ct Sping p =.518 Ct Winter p =.7274 Valencia-33 Mean Std Error Mean Std Error DI Spring p =.83 DI Winter p =.9 Ct Spring.. p = Ct Winter p =. Yield
30 Untreated 35 Valencia Valencia DI Spring DI Winter Ct Spring Ct Winter 21. DI Spring DI Winter Ct Spring Ct Winter Valencia-34 Mean Std Error Mean Std Error DI Spring p =.963 DI Winter p =.315 Ct Spring p =.4142 Ct Winter p =.3991 Valencia-35 Mean Std Error Mean Std Error DI Spring p =.53 DI Winter p =.3 Ct Spring p =.14 Ct Winter p =.65 3
31 Untreated 35. Valencia Valencia DI Spring DI Winter Ct Spring Ct Winter. DI Spring DI Winter Ct Spring Ct Winter Valencia-37 Mean Std Error Mean Std Error DI Spring p =.9 DI Winter p =.3 Ct Spring p =.38 Ct Winter p =.24 Yield Valencia-38 Mean Std Error Mean Std Error DI Spring p =.8313 DI Winter p = <.1 Ct Spring p =.1599 Ct Winter p =
32 Untreated Valencia-4 Grapefruit DI Spring DI Winter Ct Spring Ct Winter DI Spring DI Winter Ct Spring Ct Winter Valencia-4 Mean Std Error Mean Std Error DI Spring p =.9519 DI Winter p =.4 Ct Spring p =.4 Ct Winter p =.33 Grapefruit-9 Mean Std Error Mean Std Error DI Spring p =.6428 DI Winter p =.1711 Ct Spring p =.2538 Ct Winter p =.83 32
33 Untreated 4 Pineapple-1 5. Murcott DI Spring DI Winter Ct Spring Ct Winter. DI Spring DI Winter Ct Spring Ct Winter Pineapple-1 Mean Std Error Mean Std Error DI Spring p =.1283 DI Winter p =.7244 Ct Spring p =.9619 Ct Winter p = <.1 Yield 1 1 Murcott-1 Mean Std Error Mean Std Error DI Spring p =.2 DI Winter p =. Ct Spring na. p = <.1 Ct Winter p =.5 Yield
34 Valencia-3 Valencia DI Spring DI Winter Total # Fruit Yield (kg) DI Spring DI Winter Total # Fruit Yield (kg) Valencia-3 Mean Std ErrorMean Std Error DI Spring p = DI Winter p = <. 1 PCR Spring p =.16 PCR Winter p =.25 Total # Fruit p =.45 Yield (kg) p =.25 Valencia-29 Mean Std ErrorMean Std Error DI Spring p =.42 DI Winter p =.5 PCR Spring p =.25 PCR Winter p =.55 Total # Fruit p =.24 Yield (kg) p =.65 34
35 9 Valencia-15 1 Valencia DI May16 DI Oct16 DI Jan17 % Fruit Drop Yield (kg) Valencia-15 Mean Std ErrorMean Std Error DI May p =.83 DI Oct p =.77 DI Jan p =.81 PCR May p =.18 PCR Jan p =.71 % Fruit Drop p =.26 Yield (kg) p =.84 1 DI May16 DI Oct16 DI Jan17 % Fruit Drop Yield (kg) Valencia-16 Mean Std ErrorMean Std Error DI May p =.8 DI Oct p =.37 DI Jan p =.7 PCR May p =.17 PCR Jan p =.54 p = <. % Fruit Drop Yield (kg) p =.35 35
36 Valencia-38 Valencia DI Spring DI Winter Total # Fruit Yield (kg) Valencia-38 Mean Std ErrorMean Std Err DI Spring p =.86 DI Winter p = <.1 PCR Spring p =.14 PCR Winter p =.65 Total # Fruit p =.25 Yield (kg) p = DI April16 DI Oct16 DI Jan17 % Fruit Drop Yield (kg) Valencia-7 Mean Std ErrorMean Std Err DI April p =.8 DI Oct p = <.1 DI Jan p =.15 PCR April p =.2 PCR Jan p =.71 % Fruit Drop p =.81 Yield (kg) p =.83 36
37 Valencia DI Spring DI Winter Total # Fruit Yield (kg) Valencia-28 Mean Std ErrorMean Std Error DI Spring p =.27 DI Winter p =.1 PCR Spring p = PCR Winter 26 p = <. 1 Total # Fruit p =.59 Yield (kg) p =.22 37
38 Bactericides and Timing March-May June-Aug. Sept.-Nov. Trial Site Region Rootstock Age Average DI at Start FW FL MS FW FL MS FW FL MS Grapefruit -1 IR Sour < Grapefruit -2 IR Sour < Grapefruit -3 IR Sour < Grapefruit -4 IR Sour < Grapefruit -5 IR Swingle Grapefruit -6 IR Swingle Grapefruit -7 IR Sour Orange Grapefruit -8 IR Sour Orange Grapefruit FW = Firewall FL = Fireline MS = Mycoshield 38
39 Bactericides and Timing March-May June-Aug. Sept.-Nov. Trial Site Region Rootstock Age Average DI at Start FW FL MS FW FL MS FW FL MS Hamlin-1 R Swingle Hamlin-2 R Swingle Hamlin-3 SW Carrizo <5 1 1 Hamlin-4 IR sour Hamlin-5 SW Swingle < Hamlin-6 SW F Hamlin-7 SW Carrizo Hamlin-8 SW Swingle < Hamlin-9 R Hamlin-1 SW Swingle Hamlin-11 PR Carrizo + Hamlin-12 R Hamlin-13 R Hamlin-14 R Hamlin-15 R Hamlin-16 SW Hamlin-17 R FW = Firewall FL = Fireline MS = Mycoshield 39
40 Bactericides and Timing March-May June-Aug. Sept.-Nov. Trial Site Region Rootstock Age Average DI at Start FW FL MS FW FL MS FW FL MS Valencia-1 R Valencia-2 R Swingle Valencia-3 SW Carrizo < Valencia-4 SW Kuharske Valencia-5 SW Kuharske Valencia-6 SW Kuharske Valencia-7 IR Swingle Valencia-8 IR Swingle Valencia-9 IR Swingle Valencia-1 IR Swingle Valencia-11 IR Swingle Valencia-12 SW Carrizo Valencia-13 SW Carrizo Valencia-14 SW Carrizo Valencia-15 R Swingle Valencia-16 R Swingle Valencia-17 R Swingle Valencia-18 R Swingle Valencia-19 R Swingle Valencia- R Swingle FW = Firewall FL = Fireline MS = Mycoshield 4
41 Bactericides and Timing March-May June-Aug. Sept.-Nov. Trial Site Region Rootstock Age Average DI at Start FW FL MS FW FL MS FW FL MS Valencia-21 SW Carrizo Valencia-22 SW Carrizo Valencia-23 SW Swingle Valencia-24 PR Swingle Valencia-25 R Volk-Carrizo + Valencia-26 SW Carrizo Valencia-27 SW Carrizo + Valencia-28 R Valencia-29 R Valencia-3 R Valencia-31 SW Valencia-32 SW Valencia-33 R Valencia-34 R Valencia-35 R Valencia-36 PR Valencia-37 R Valencia-38 R Valencia-39 R Valencia-4 R FW = Firewall FL = Fireline MS = Mycoshield 41
42 Bactericides and Timing March-May June-Aug. Sept.-Nov. Trial Site Region Rootstock Age Average DI at Start FW FL MS FW FL MS FW FL MS Midsweet-1 R Swingle Midsweet-2 SW Carrizo Midsweet-3 SW Swingle Midsweet-4 SW Murcott-1 R Parson-1 PR Cleo Parson-1 PR Cleo + Parson-2 SW Carrizo Parson-2 SW Cleo + Pineapple-1 R FW = Firewall FL = Fireline MS = Mycoshield 42
GAMINGRE 8/1/ of 7
FYE 09/30/92 JULY 92 0.00 254,550.00 0.00 0 0 0 0 0 0 0 0 0 254,550.00 0.00 0.00 0.00 0.00 254,550.00 AUG 10,616,710.31 5,299.95 845,656.83 84,565.68 61,084.86 23,480.82 339,734.73 135,893.89 67,946.95
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