Abstract
SUMMARY An experiment examining the main and interactive effects of vegetative (i.e., sprout) year applications of nitrogen, phosphorus, and potassium fertilizers was conducted at two commercial wild blueberry fields near Kemptown, Nova Scotia and Mount Vernon, Prince Edward Island during 2000 and 2001. The nitrogen (N), phosphorus (P), and potassium (K) sources consisted of urea (N at 0 to 60 kg-ha−1), triple superphosphate (P2O5 at 0 to 150 kg-ha−1), and potash (K2O at 0 to 60 kg-ha−1). A completely randomized rotatable composite design was used with 16 treatments, 4 replications, a plot size of 6 m × 8 m, and 2 m buffers between plots. Overall, leaf tissue N, P, and K levels were increased at both sites with fertilizer applications. Main and interactive effects of the soil applied N, P, and K on stem length, individual stem dry weight, and stem density were also present at both sites. Significant effects of soil-applied N and K, and soil applied K on fruit set were present at the Kemptown and Mount Vernon sites with fruit set increasing up to 20% and 51%, respectively. Harvestable yield varied in response to the N-P-K treatments with no treatment having a significantly higher yield than the non-fertilized treatment at the Kemptown site, and the harvestable yield of the unfertilized treatment being as much as 36% lower than other soil-applied N-P-K treatments at the Mount Vernon site. Therefore, results from this study illustrate the importance of monitoring leaf tissue N, P, and K levels, the ability to alter leaf tissue N, P, and K levels and correct leaf tissue deficiencies, and the beneficial yield component effects of soil-applied N, P, and K when applied to the wild blueberry under nutrient deficient conditions.
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Claims 7
Claim · model-written summary
Fertilizer applications increased leaf tissue N, P and K levels at both sites
- Taxon
- Wild Blueberryt0
- Treatment
- fertilizer applicationse1
- Outcome
- leaf tissue N, P, and K levelse1
- Direction
- increasede1
Not reportedComparator
Verbatim
t0“on the Wild Blueberry”
e1“Overall, leaf tissue N, P, and K levels were increased at both sites with fertilizer applications.”
Claim · model-written summary
Main and interactive effects of soil-applied N, P and K were present on stem length, stem dry weight and stem density at both sites
- Taxon
- Wild Blueberryt0
- Treatment
- soil applied N, P, and Ke2
- Outcome
- stem length, individual stem dry weight, and stem densitye2
Not reportedComparatorDirection
Verbatim
t0“on the Wild Blueberry”
e2“Main and interactive effects of the soil applied N, P, and K on stem length, individual stem dry weight, and stem density were also present at both sites.”
Claim · model-written summary
Significant soil-applied N and K effects increased fruit set by up to 20% at the Kemptown site
- Taxon
- Wild Blueberryt0
- Treatment
- soil-applied N and Ke3
- Outcome
- fruit sete3
- Direction
- increasinge3
- Value
- 20%e3
- Setting
- Kemptowne3
Not reportedComparator
Verbatim
t0“on the Wild Blueberry”
e3“Significant effects of soil-applied N and K, and soil applied K on fruit set were present at the Kemptown and Mount Vernon sites with fruit set increasing up to 20% and 51%, respectively.”
Claim · model-written summary
Significant soil-applied N and K effects increased fruit set by up to 51% at the Mount Vernon site
- Taxon
- Wild Blueberryt0
- Treatment
- soil-applied N and Ke3
- Outcome
- fruit sete3
- Direction
- increasinge3
- Value
- 51%e3
- Setting
- Mount Vernone3
Not reportedComparator
Verbatim
t0“on the Wild Blueberry”
e3“Significant effects of soil-applied N and K, and soil applied K on fruit set were present at the Kemptown and Mount Vernon sites with fruit set increasing up to 20% and 51%, respectively.”
Claim · model-written summary
No N-P-K treatment significantly increased harvestable yield over the non-fertilized treatment at the Kemptown site
Verbatim
t0“on the Wild Blueberry”
e4“Harvestable yield varied in response to the N-P-K treatments with no treatment having a significantly higher yield than the non-fertilized treatment at the Kemptown site, and the harvestable yield of the unfertilized treatment being as much as 36% lower than other soil-applied N-P-K treatments at the Mount Vernon site.”
Claim · model-written summary
The unfertilized treatment had harvestable yield up to 36% lower than other soil-applied N-P-K treatments at the Mount Vernon site
Verbatim
t0“on the Wild Blueberry”
e4“Harvestable yield varied in response to the N-P-K treatments with no treatment having a significantly higher yield than the non-fertilized treatment at the Kemptown site, and the harvestable yield of the unfertilized treatment being as much as 36% lower than other soil-applied N-P-K treatments at the Mount Vernon site.”
Claim · model-written summary
Monitoring leaf tissue N, P and K levels is important for wild blueberry production
Verbatim
e5“illustrate the importance of monitoring leaf tissue N, P, and K levels”
e6“when applied to the wild blueberry”
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