PCC MarchApril Final Draft
Continued from Page 42 problem above-ground pests include two-spotted spider mites, Lygus bug, Botrytis fruit rot/gray mold and powdery mildew, depending on varietal susceptibility. Other pests necessary to watch include worms and aphids. “The optimum disease and weed control program is a one-two punch,” Stoeckle says. “Hit it at the end of the season as a burndown and at the beginning before next planting via drip irrigation. The backbone of our control program is Pic-Chlor 60 EC (1,3-dichloropropene plus chloropicrin) at the max recommended rate (350 lbs/ac), going after the heavy hitting ‘big boys’ (soilborne diseases) when applied in August or September before planting.” He recommends Vapam or K-Pam to get the additional benefits to control these diseases (Fusarium, Verticillium, Macrophomina phacelia) and eliminate the inoculum reservoir in the crown. Stoeckle says emulsified formulations of Telone ® C-35 and chloropicrin can be applied with irrigation water through drip irrigation systems. Metam sodium is the active ingredient in Vapam ® HL and metam potassium in the active ingredient in K-Pam ® HL . Both are AMVAC ® soil fumigants, which give off methyl isothiocyanate (MITC) when combined with water via drip or otherwise. If drip fumigation is planned, good results have been obtained with a sequential application of chloropicrin or 1,3-dichloropropene plus chloropicrin, followed 7 days later with metam sodium or metam potassium. Stoeckle considers fumigants essential and offers the math: “If we equate the value of every plant to be $2 each and you lose 10% of your plants, that’s 2,500 plants on a population of 25,000 per acre. Your choice is to fumigate or take a $5,000 loss. That’s an easy decision. The return on investment on fumigation is huge. We expect to see a 20% to 30% return on fumigant investment.” He is quick to add there are other management decisions that help maximize production, noting, “I could go on and on about using the best plastic mulch or optimum fertilization practices.” Best Practice Weed Control Reduces Production Costs Fifth-generation Santa Barbara County grower Brett Ferini, owner of Rancho Laguna Farms, grows 400 acres of strawberries (300 fall plant, 100 summer plant) and 20 acres (adding another 20 for 40 total) of blackberries. Plus, he grows 35 acres of organic blackberries. He used Vapam on blackberries in February 2020. “Vapam worked out really well in controlling nutgrass/nutsedge,” he said. “Pic-Clor 60 has no effect.” For weed and disease control, “we hit Navel Orangeworm Pheromone Mating Disruption Simple Deployment! ® ISOMATE Mist NOW Opmized Formulaon for 2021! Average NOW / Trap / Season 120 100 80 60 40 20 0 Grower Standard ISOMATE Mist NOW Egg Replicated 4x - Chico, CA - 2019 in Traps 46% Reduction - Almond Harvest Pheromone 99% Reduction 7 1 Mist Unit/Acre Use Rate 225+ Days Pheromone Release Average NOW Infested Nuts (%) 6 5 4 3 2 1 75% Reduction 0 Grower Standard ISOMATE® Mist NOW Replicated 4x - Chico, CA - 2019 Jeannine Lowrimore Northern California 209.603.9244 Christeen Abbott-Hearn Central California 559.334.7664 PACIFIC BIOCONTROL CORPORATION www.pacificbiocontrol.com ISOMATE ® is a registered trademark of Pacific Biocontrol 44 Progressive Crop Consultant March / April 2021
everything at fall pre-plant with Pic- Clor 60 through drip tape and seven days after that we follow with Vapam,” he said. “It does a terrific job on nutsedge and other weeds, as well as the soilborne diseases including Verticillium, Phytophthora and, anecdotally, Macrophomina.” Ferini says the operation plans to add a Vapam burndown at the end of the 2020 growing season “We definitely [have] cut weeding by 60% on summer plant,” he says. “Labor is our highest cost. We saw $1,050 savings per acre vs. our normal costs of $1,800/acre. The big test will be on the fall plant when we get more rain. Our fall weeding cost normally runs $2,800 to $3,000 per acre. Using Pic-Clor 60 followed by Vapam treatment, I expect weeding cost savings of $1,000 to $1,500 per acre.” Also seeing results with soil fumigants is Santa Barbara grower Josh Ford. He is COO of Ocean Breeze Ag Management LLC in Ventura, which grows 450 acres of strawberries, 50 acres of blackberries, and 25 acres of raspberries. Ford’s biggest soilborne pests are Macrophomina, Fusarium, and Phytophthora cactorum. Nutgrass is his most difficult weed to control. “We’ve been using soil fumigants for many years,” he says. “We were using methyl bromide, but now we apply chloropicrin once a year and K-Pam once to twice a season. If nut grass is a bad problem, we will knock it down at the end of the season with K-Pam and also pre-plant K-Pam. Our ROI is good when you consider the increased cost of labor to manually remove nut grass.” Comments about this article? We want to hear from you. Feel free to email us at article@jcsmarketinginc. com Finding the right fumigation and herbicide program can help reduce long term labor costs. BOOT CAMP FOR BLOOM SUCCESS! Get the basics for bloom success in the field. To achieve greatness, you’ve got to put in the work. Applications of Acadian ® are the critical step that strengthen and condition your plants to produce when it counts the most. So, choose Acadian ® for bloom success. Acadian ® improves water management, enhances antioxidant levels and increases photosynthesis. Timing is vital to maximize genetic potential. Ensure your application program completes Boot Camp – get Acadian ® in your tank-mix today! Contact your local Acadian ® representative: Chris Coolidge (Central CA) . . . 559-779-3579 Duncan Smith (NorCal) . . . . . . 209-471-2412 Jeff Downs (SoCal/AZ) . . . . . . 559-285-8448 Kollin Holzwart (SoCal) . . . . . 831-206-5442 acadian-usa.com March / April 2021 www.progressivecrop.com 45
- Page 1 and 2: March / April 2021 A Review of Pyth
- Page 3 and 4: 4 8 12 18 24 IN THIS ISSUE A New Ge
- Page 5 and 6: Figure 1. Integration of universal
- Page 7 and 8: Because protection requires great p
- Page 9 and 10: Average Yield (lb/ac, 12% protein)
- Page 11 and 12: NDRE and leaf chlorophyll can serve
- Page 13 and 14: THE BEST WAY TO MANAGE PATHOGENS BE
- Page 15 and 16: Pythium pathogens form thick-walled
- Page 17 and 18: NAVEL ORANGEWORM MANAGEMENT discolo
- Page 19 and 20: (Left) Spotted-wing drosophila adul
- Page 21 and 22: decreased the number of larvae in f
- Page 24 and 25: New Findings on Limb Dieback of Fig
- Page 26 and 27: Figure 3. Left, pycnidia protruding
- Page 28 and 29: Figure 4. Susceptibility of various
- Page 30 and 31: Enhancing Diamondback Moth Manageme
- Page 32 and 33: Continued from Page 31 study (Figur
- Page 34 and 35: Diamondback moth larva and adult (p
- Page 36 and 37: Vegetable Growers Express Impressio
- Page 38: Continued from Page 37 Responses Re
- Page 41 and 42: References Biofertilizers Market Si
- Page 43: Go boldly into every battle. Includ
- Page 47 and 48: Apply less, expect more? There’s
Continued from Page 42<br />
problem above-ground pests include<br />
two-spotted spider mites, Lygus bug,<br />
Botrytis fruit rot/gray mold and powdery<br />
mildew, depending on varietal<br />
susceptibility. Other pests necessary to<br />
watch include worms and aphids.<br />
“The optimum disease and weed control<br />
program is a one-two punch,” Stoeckle<br />
says. “Hit it at the end of the season as a<br />
burndown and at the beginning before<br />
next planting via drip irrigation. The<br />
backbone of our control program is<br />
Pic-Chlor 60 EC (1,3-dichloropropene<br />
plus chloropicrin) at the max recommended<br />
rate (350 lbs/ac), going after<br />
the heavy hitting ‘big boys’ (soilborne<br />
diseases) when applied in August<br />
or September before planting.” He<br />
recommends Vapam or K-Pam to get<br />
the additional benefits to control these<br />
diseases (Fusarium, Verticillium, Macrophomina<br />
phacelia) and eliminate the<br />
inoculum reservoir in the crown.<br />
Stoeckle says emulsified formulations<br />
of Telone ® C-35 and chloropicrin<br />
can be applied with irrigation water<br />
through drip irrigation systems.<br />
Metam sodium is the active ingredient<br />
in Vapam ® HL and metam potassium<br />
in the active ingredient in K-Pam ®<br />
HL . Both are AMVAC ® soil fumigants,<br />
which give off methyl isothiocyanate<br />
(MITC) when combined with water via<br />
drip or otherwise. If drip fumigation<br />
is planned, good results have been<br />
obtained with a sequential application<br />
of chloropicrin or 1,3-dichloropropene<br />
plus chloropicrin, followed 7 days later<br />
with metam sodium or<br />
metam potassium.<br />
Stoeckle considers fumigants essential<br />
and offers the math: “If we equate the<br />
value of every plant to be $2 each and<br />
you lose 10% of your plants, that’s 2,500<br />
plants on a population of 25,000 per<br />
acre. Your choice is to fumigate or take<br />
a $5,000 loss. That’s an easy decision.<br />
The return on investment on fumigation<br />
is huge. We expect to see a 20% to<br />
30% return on fumigant investment.”<br />
He is quick to add there are other management<br />
decisions that help maximize<br />
production, noting, “I could go on and<br />
on about using the best plastic mulch or<br />
optimum fertilization practices.”<br />
Best Practice Weed Control<br />
Reduces Production Costs<br />
Fifth-generation Santa Barbara County<br />
grower Brett Ferini, owner of Rancho<br />
Laguna Farms, grows 400 acres of<br />
strawberries (300 fall plant, 100 summer<br />
plant) and 20 acres (adding another<br />
20 for 40 total) of blackberries. Plus, he<br />
grows 35 acres of organic blackberries.<br />
He used Vapam on blackberries in<br />
February 2020.<br />
“Vapam worked out really well in<br />
controlling nutgrass/nutsedge,” he said.<br />
“Pic-Clor 60 has no effect.”<br />
For weed and disease control, “we hit<br />
Navel Orangeworm<br />
Pheromone<br />
Mating<br />
Disruption<br />
Simple<br />
Deployment!<br />
®<br />
ISOMATE Mist NOW<br />
Opmized Formulaon<br />
for 2021!<br />
Average NOW / Trap / Season<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
Grower Standard<br />
ISOMATE Mist NOW<br />
Egg<br />
Replicated 4x - Chico, CA - 2019<br />
in Traps<br />
46%<br />
Reduction<br />
- Almond Harvest<br />
Pheromone<br />
99%<br />
Reduction<br />
7<br />
1 Mist Unit/Acre<br />
Use Rate<br />
225+ Days<br />
Pheromone Release<br />
Average NOW Infested Nuts (%)<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
75%<br />
Reduction<br />
0<br />
Grower Standard<br />
ISOMATE®<br />
Mist NOW<br />
Replicated 4x - Chico, CA - 2019<br />
Jeannine Lowrimore<br />
Northern California<br />
209.603.9244<br />
Christeen Abbott-Hearn<br />
Central California<br />
559.334.7664<br />
PACIFIC BIOCONTROL CORPORATION<br />
www.pacificbiocontrol.com<br />
ISOMATE ® is a registered trademark of Pacific Biocontrol<br />
44 Progressive Crop Consultant March / April 2021
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