Abstract
ABSTRACT Organic matter levels combined with drought periods during the growing season have adverse impacts on rain-fed potato production in coarse textured soils of eastern Canada. Using pulp fiber residues (PFR) may build up soil organic matter, improve crops yield and nutrient uptake, and reduce the need for supplemental irrigation in this region. A box experiment with 3 rates of PFR [0, 45, and 90 Mg ha− 1 dry mater carbon (C) basis] with or without supplementary drip irrigation was established in a sandy loam soil in New Brunswick, Canada. Red clover, barley, and potato were cultivated as three crops of the rotation in 1999, 2000, and 2001, respectively. The PFR only applied before red clover in fall 1998. Selected soil chemical and physical properties were measured before planting and after harvest. Crops yield and nitrogen (N), phosphorus (P), and potassium (K) accumulation were determined at harvest. Soil organic-C content, bulk density and water holding capacity were improved by PFR application. Red clover and barley biomass production were significantly increased by PFR application. This effect was promoted by supplemental irrigation. Potato tuber yield was not affected by PFR and it was higher in rain-fed compared to supplementary irrigated system. Although, there was some initial evidence of N immobilization but generally PFR application increased N, P, and K bioavailability. This research has demonstrated that PFR can successfully be used as soil amendment in coarse textured soils without any adverse effect. Keywords: Barleydry matterorganic amendmentred clovertermo-mechanical pulping ACKNOWLEDGMENTS The authors would like to extend their appreciation and thanks to the farm field crew of the Potato Research Centre in Fredericton, New Brunswick, Canada. Technical assistance was provided by Karen Gillam. Thanks are also extended to Doctor T. Mahendrappa of the Canadian Forestry Service for his valuable suggestions and to the Irving Paper Co. of Saint John, NB, Canada for supplying the pulp fiber.
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Claims 10
Claim · model-written summary
Pulp fiber residue application improved soil organic-C content, bulk density and water holding capacity.
- Treatment
- PFR applicatione0
- Outcome
- Soil organic-C content, bulk density and water holding capacitye0
- Direction
- improvede0
Not reportedTaxonComparator
Verbatim
e0“Soil organic-C content, bulk density and water holding capacity were improved by PFR application”
Claim · model-written summary
Pulp fiber residue application significantly increased red clover biomass production.
- Taxon
- Red clover
Trifolium pratensee0 - Treatment
- PFR applicatione0
- Outcome
- biomass productione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red clover and barley biomass production were significantly increased by PFR application”
Claim · model-written summary
Pulp fiber residue application significantly increased barley biomass production.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- PFR applicatione0
- Outcome
- biomass productione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Red clover and barley biomass production were significantly increased by PFR application”
Claim · model-written summary
The increase in red clover biomass from pulp fiber residue was promoted by supplemental irrigation.
- Taxon
- Red cloverTrifolium pratensee0
- Treatment
- supplemental irrigatione1
- Outcome
- biomass productione0
- Direction
- promotede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red clover and barley biomass production were significantly increased by PFR application”
e1“This effect was promoted by supplemental irrigation”
Claim · model-written summary
The increase in barley biomass from pulp fiber residue was promoted by supplemental irrigation.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- supplemental irrigatione1
- Outcome
- biomass productione0
- Direction
- promotede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red clover and barley biomass production were significantly increased by PFR application”
e1“This effect was promoted by supplemental irrigation”
Claim · model-written summary
Potato tuber yield was not affected by pulp fiber residue.
- Taxon
- Potato
Solanum tuberosume0 - Treatment
- PFRe0
- Outcome
- Potato tuber yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato tuber yield was not affected by PFR and it was higher in rain-fed compared to supplementary irrigated system”
Claim · model-written summary
Potato tuber yield was higher in the rain-fed system than in the supplementary irrigated system.
- Taxon
- PotatoSolanum tuberosume0
- Treatment
- rain-fede0
- Outcome
- Potato tuber yielde0
- Direction
- highere0
- Comparator
- supplementary irrigated systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato tuber yield was not affected by PFR and it was higher in rain-fed compared to supplementary irrigated system”
Claim · model-written summary
There was some initial evidence of nitrogen immobilization after pulp fiber residue application.
Not reportedTaxon
Verbatim
e0“there was some initial evidence of N immobilization”
Claim · model-written summary
Pulp fiber residue application generally increased N, P and K bioavailability.
Not reportedTaxonComparator
Verbatim
e0“generally PFR application increased N, P, and K bioavailability”
Claim · model-written summary
The authors conclude that pulp fiber residue can successfully be used as a soil amendment in coarse textured soils without adverse effect.
Not reportedTaxon
Verbatim
e0“PFR can successfully be used as soil amendment in coarse textured soils without any adverse effect”
The same questions in other papers
irrigation · yield · Hordeum vulgare (barley)Results differ
82 papers in the same direction as this paper · 26 in the opposite direction
- no effect
- negative
- negative
105 papers more in this group
See all 109 papers →irrigation · yield · Trifolium pratense (red clover)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.