Abstract
To support growth, short-cycle horticultural crops require readily available nutrients. However, this often leads to nutrient leaching. Implementing best management practices in production decisions like incorporating fertilizer retaining amendments to substrates or modifying fertilization programs can mitigate nutrient losses to the environment and associated costs. This study examined using an activated aluminum (AA) material as a substrate amendment to retain phosphorus (P) within containers while also assessing methods to reduce P fertilization in Tagetes production over a six-week production cycle. A commercial peat moss substrate (PL) pre-loaded with nutrients was amended with AA, enabling comparisons between substrates with and without AA. Enhanced fertilizer practices involved supplementing the initial nutrients by applying a weekly fertigation solution including nitrogen and potassium over the six weeks, but P for either 0, 2, 4, or 6 weeks. The incorporation of AA significantly reduced P leaching losses by 89.5–97.7%, compared to the PL substrates receiving P the entire six weeks. Regardless of substrate or fertilizer management, all Tagetes had equivalent sizes (growth index) and aboveground biomass. The results indicate that amending substrates with AA and/or reducing additional P inputs are effective strategies to minimize P leaching without compromising Tagetes quality.
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Claims 3
Claim · model-written summary
Activated aluminum reduced phosphorus leaching by 89.5–97.7% relative to peat substrates fertilized with phosphorus for six weeks.
- Treatment
- incorporation of AAe0
- Outcome
- P leaching lossese0
- Direction
- reducede0
- Value
- 89.5–97.7%e0
- Comparator
- PL substrates receiving P the entire six weekse0
.jpg?width=60){kind=small}
TagetesOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The incorporation of AA significantly reduced P leaching losses by 89.5–97.7%, compared to the PL substrates receiving P the entire six weeks”
e2“in Tagetes production”
Claim · model-written summary
Tagetes growth index was equivalent across substrate and fertilizer management.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of substrate or fertilizer management, all Tagetes had equivalent sizes (growth index) and aboveground biomass”
Claim · model-written summary
Tagetes aboveground biomass was equivalent across substrate and fertilizer management.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of substrate or fertilizer management, all Tagetes had equivalent sizes (growth index) and aboveground biomass”
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