Abstract
Differential fertilizer application method (single dry, split dry, fertigated liquid), irrigation method (drip, microjet), and nutrient source (N vs. N+P in year 2+) were established in Spring 1992 in a newly planted Gala and Fuji apple orchard. In Spring 1993, the drip-fertigated Gala trees had 3 times and the drip-fertigated Fuji trees had 8 times more flower clusters per tree than the other treatments Fruiting was not allowed in 1993. Trunk cross-sectional area (TCSA) in Fall 1992 was not influenced by treatments. By Fall 1993, TCSA was still independent of treatment for the Fuji trees; however, the Gala trees fell into two size groups - (larger) microsprinkler-fertigated and split dry broadcast; and (smaller) drip fertigated and single-time spring dry broadcast. TCSA had increased 284% (Fuji) and 265% (Gala) since planting. None of the treatment effects were substantially influenced by fertigating with N+P vs N only. Leaf concentrations of most nutrients were consistently lower in 1993 than in 1992. Leaf Fe was higher in 1993 because the orchard was dustier. Leaf N was lower in the microsprinkler-fertigated trees than in all other treatments. Fertigation with N+P did not consistently produce higher leaf P than the N-only treatments. Leaf Mn varied with treatment: microsprinkler fertigated < drip fertigated, single dry < split dry. Treatment effects on all other elements were inconsistent (K, Ca, Mg, B, Cu) or absent (Zn, Fe).
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Claims 16
Claim · model-written summary
Drip-fertigated Gala trees had 3 times more flower clusters per tree than the other treatments in Spring 1993.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e0“In Spring 1993, the drip-fertigated Gala trees had 3 times and the drip-fertigated Fuji trees had 8 times more flower clusters per tree than the other treatments”
Claim · model-written summary
Drip-fertigated Fuji trees had 8 times more flower clusters per tree than the other treatments in Spring 1993.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e0“In Spring 1993, the drip-fertigated Gala trees had 3 times and the drip-fertigated Fuji trees had 8 times more flower clusters per tree than the other treatments”
Claim · model-written summary
Trunk cross-sectional area in Fall 1992 was not influenced by the treatments.
- Taxon
- APPLESt0
- Treatment
- treatmentse1
- Outcome
- Trunk cross-sectional area (TCSA)e1
- Direction
- not influencede1
- Qualifier
- in Fall 1992e1
Not reportedComparator
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Trunk cross-sectional area (TCSA) in Fall 1992 was not influenced by treatments”
Claim · model-written summary
By Fall 1993, trunk cross-sectional area of Fuji trees remained independent of treatment.
- Taxon
- APPLESt0
- Material
- Fujie2
- Treatment
- treatmente2
- Outcome
- TCSAe2
- Direction
- independente2
- Qualifier
- By Fall 1993e2
Not reportedComparator
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e2“By Fall 1993, TCSA was still independent of treatment for the Fuji trees”
Claim · model-written summary
Gala trees fell into a larger size group under microsprinkler-fertigated and split dry broadcast than under drip fertigated and single-time spring dry broadcast.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e3“the Gala trees fell into two size groups - (larger) microsprinkler-fertigated and split dry broadcast; and (smaller) drip fertigated and single-time spring dry broadcast”
Claim · model-written summary
Fuji trunk cross-sectional area increased 284% since planting.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e4“TCSA had increased 284% (Fuji) and 265% (Gala) since planting”
Claim · model-written summary
Gala trunk cross-sectional area increased 265% since planting.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e4“TCSA had increased 284% (Fuji) and 265% (Gala) since planting”
Claim · model-written summary
None of the treatment effects were substantially influenced by fertigating with N+P compared with N only.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e5“None of the treatment effects were substantially influenced by fertigating with N+P vs N only”
Claim · model-written summary
Fertigation with N+P did not consistently produce higher leaf P than the N-only treatments.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e6“Fertigation with N+P did not consistently produce higher leaf P than the N-only treatments”
Claim · model-written summary
Leaf N was lower in microsprinkler-fertigated trees than in all other treatments.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e7“Leaf N was lower in the microsprinkler-fertigated trees than in all other treatments”
Claim · model-written summary
Leaf Mn was lower under microsprinkler fertigated than under drip fertigated application.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Leaf Mn varied with treatment: microsprinkler fertigated < drip fertigated, single dry < split dry”
Claim · model-written summary
Leaf Mn was lower under single dry application than under split dry application.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Leaf Mn varied with treatment: microsprinkler fertigated < drip fertigated, single dry < split dry”
Claim · model-written summary
Treatment effects on K, Ca, Mg, B and Cu were inconsistent.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Treatment effects on all other elements were inconsistent (K, Ca, Mg, B, Cu) or absent (Zn, Fe)”
Claim · model-written summary
Treatment effects on Zn and Fe were absent.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Treatment effects on all other elements were inconsistent (K, Ca, Mg, B, Cu) or absent (Zn, Fe)”
Claim · model-written summary
Leaf Fe was higher in 1993, which the authors attribute to a dustier orchard.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Leaf Fe was higher in 1993 because the orchard was dustier”
Claim · model-written summary
Leaf concentrations of most nutrients were consistently lower in 1993 than in 1992.
Verbatim
t0“262 FERTIGATION VERSUS DRY APPLICATION OF NITROGEN AND PHOSPHORUS FERTILIZER IN IRRIGATED `GALA' AND `FUJI' APPLES”
e1“Leaf concentrations of most nutrients were consistently lower in 1993 than in 1992”
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