Abstract
The purpose of this research was to collect efficacy data on biological, biochemical, and chemical fungicide seed treatments on hemp (Cannabis sativa L.) to mitigate damping-off and enhance field stand establishment. Seed treatments were evaluated in fields in New York (NY), North Dakota (ND), and Virginia (VA) and at two planting dates in each state in 2020. A single seed lot of a dual-purpose (fiber + grain) cultivar (‘Anka’) was treated using a laboratory-scale rotary pan coater. Five biological, two biochemical, and four chemical seed treatments were tested. A laboratory germination test revealed that seed treatments did not exhibit phytotoxicity when compared to the non-treated control. A laboratory bioassay with naturally infested soil was used to assess the preliminary activity of seed treatments for protection against damping-off. The biochemical seed treatment Ultim® (active ingredient; organic copper) performed as well as the chemical treatments Apron XL® + Maxim® 4FS and Mertect® 340F in preventing damping-off whereas the biological treatments did not differ from the non-treated control in terms of disease incidence. In all field tests, biological seed treatments did not improve plant stands compared to the non-treated control. Biochemical seed treatments Prudent 44® with Nutrol® (active ingredient; phosphite) and Ultim®, along with chemical seed treatments, had acceptable efficacy and improved stand establishment compared to the non-treated control across field locations. Based on efficacy results from laboratory and field trials, the copper seed treatment has potential for both conventional and organic hemp production.
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Claims 8
Claim · model-written summary
Seed treatments showed no phytotoxicity in a laboratory germination test.
- Taxon
- Hemp
Cannabis sativa subsp. sativat0 - Treatment
- seed treatmentse0
- Outcome
- phytotoxicitye0
- Direction
- did not exhibite0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A laboratory germination test revealed that seed treatments did not exhibit phytotoxicity when compared to the non-treated control”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Ultim performed as well as Apron XL plus Maxim and Mertect in preventing damping-off.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- Ultim®e0
- Outcome
- preventing damping-offe0
- Direction
- as well ase0
- Comparator
- Apron XL® + Maxim® 4FS and Mertect® 340Fe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical seed treatment Ultim® (active ingredient; organic copper) performed as well as the chemical treatments Apron XL® + Maxim® 4FS and Mertect® 340F in preventing damping-off”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Biological treatments did not differ from untreated control for disease incidence.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- biological treatmentse0
- Outcome
- disease incidencee0
- Direction
- did not differe0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biological treatments did not differ from the non-treated control in terms of disease incidence”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Biological seed treatments did not improve field plant stands.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- biological seed treatmentse0
- Outcome
- plant standse0
- Direction
- did not improvee0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all field tests, biological seed treatments did not improve plant stands compared to the non-treated control”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Prudent 44 with Nutrol improved hemp stand establishment across field locations.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- Prudent 44® with Nutrol®e0
- Outcome
- stand establishmente0
- Direction
- improvede0
- Comparator
- non-treated controle0
- Setting
- field locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochemical seed treatments Prudent 44® with Nutrol® (active ingredient; phosphite) and Ultim®, along with chemical seed treatments, had acceptable efficacy and improved stand establishment compared to the non-treated control across field locations”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Ultim improved hemp stand establishment across field locations.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- Ultim®e0
- Outcome
- stand establishmente0
- Direction
- improvede0
- Comparator
- non-treated controle0
- Setting
- field locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochemical seed treatments Prudent 44® with Nutrol® (active ingredient; phosphite) and Ultim®, along with chemical seed treatments, had acceptable efficacy and improved stand establishment compared to the non-treated control across field locations”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Chemical seed treatments improved hemp stand establishment across field locations.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- chemical seed treatmentse0
- Outcome
- stand establishmente0
- Direction
- improvede0
- Comparator
- non-treated controle0
- Setting
- field locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochemical seed treatments Prudent 44® with Nutrol® (active ingredient; phosphite) and Ultim®, along with chemical seed treatments, had acceptable efficacy and improved stand establishment compared to the non-treated control across field locations”
t0“Industrial Hemp Seed Treatments”
Claim · model-written summary
Copper seed treatment has potential for conventional and organic hemp production.
- Taxon
- hempCannabis sativa subsp. sativae0
- Outcome
- copper seed treatment has potential for both conventional and organic hemp productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the copper seed treatment has potential for both conventional and organic hemp production”
The same questions in other papers
seed treatment · growth · Cannabis sativaPositive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.