Paper · 1988 · Journal of Weed Science and Technology

Physiological and ecological characteristics of sugarcane field weeds in the Ryukyu Islands. 8. Effects of nitrogen fertilizer application on growth and seed production of Rottboellia exaltata L.f. and Solanum alatum Moench.

Yukio ISHIMINE; Seiichi MURAYAMA; Sigeo MATSUMOTO

14
claims
14
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

The effect of nitrogen fertilization on growth and seed production was evaluated for Rottboellia exaltata L. f., and Solanum alatum MOENCH., at 0, 10, 20 and 40kg/10a. The results are summarized as follows:1. In Rottboellia the plant height decreased as the amount of nitrogen application was increased. The value was largest in the N-0 treatment at 90 days after seeding. In Solanum the plant lenght increased with increasing nitrogen application reaching a maximum in the N-40 treatment at 100 days after seeding (Fig. 1).2. In Rottboellia the total dry weight started increasing rapidly at 30 days after seeding but the increase became less at 90 days after seeding. The value was largest in the N-20 treatment at 120 days after seeding. In Solanum the total dry weight started increasing rapidly at 60 days after seeding and then started decreasing at 90 days after seeding. The maximum value was reached in the N-20 treatment at 90 days after seeding (Fig. 2).3. In both Rottboellia and Solanum, the dry weight percentage allocation of spike, fruit and flower increased at higher nitrogen levels, while the dry weight percentage allocation of root, stem and leaf decreased as the amount of nitrogen application was increased (Fig. 3).4. In Rottboellia the leaf area increased with increasing nitrogen application reaching a maximum in the N-20 treatment at 120 days after seeding. In Solanum the leaf area reached a maximum in the N-40 treatment at 90 days after seeding and then decreased at a fast rate (Fig. 4).5. In Rottboellia heading was delayed slightly in the N-40 treatment and in Solanum flowering was delayed significantly in the N-40 treatment. In both Rottboellia and Solanum the values of spike, fruit and flower were largest in the N-20 treatment (Table 1).

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Claims 14

Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia height fell as nitrogen application increased, and was greatest without nitrogen at 90 days.

Taxon
RottboelliaRottboelliae0
Treatment
nitrogen applicatione0
Outcome
plant heighte0
Direction
decreasede0
Qualifier
90 days after seedinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Rottboellia the plant height decreased as the amount of nitrogen application was increased. The value was largest in the N-0 treatment at 90 days after seeding.”

✓ located verbatim in the source · abstract, characters 209–372 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum length rose with nitrogen and peaked at N-40 after 100 days.

Taxon
SolanumSolanume0
Treatment
nitrogen applicatione0
Outcome
plant lenghte0
Direction
increasede0
Qualifier
100 days after seedinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Solanum the plant lenght increased with increasing nitrogen application reaching a maximum in the N-40 treatment at 100 days after seeding”

✓ located verbatim in the source · abstract, characters 373–514 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia total dry weight rose rapidly from day 30, slowed after day 90, and was greatest under N-20 at day 120.

Taxon
RottboelliaRottboelliae0
Outcome
total dry weighte0
Direction
increasinge0
Qualifier
120 days after seedinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Rottboellia the total dry weight started increasing rapidly at 30 days after seeding but the increase became less at 90 days after seeding. The value was largest in the N-20 treatment at 120 days after seeding.”

✓ located verbatim in the source · abstract, characters 527–740 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum total dry weight rose rapidly from day 60 then declined after day 90, peaking under N-20 at day 90.

Taxon
SolanumSolanume0
Outcome
total dry weighte0
Direction
increasinge0
Qualifier
90 days after seedinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Solanum the total dry weight started increasing rapidly at 60 days after seeding and then started decreasing at 90 days after seeding. The maximum value was reached in the N-20 treatment at 90 days after seeding”

✓ located verbatim in the source · abstract, characters 741–955 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia reproductive allocation increased with nitrogen.

Taxon
RottboelliaRottboelliae0
Outcome
dry weight percentage allocation of spike, fruit and flowere0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum, the dry weight percentage allocation of spike, fruit and flower increased at higher nitrogen levels, while the dry weight percentage allocation of root, stem and leaf decreased as the amount of nitrogen application was increased”

✓ located verbatim in the source · abstract, characters 968–1229 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia vegetative allocation decreased with nitrogen.

Taxon
RottboelliaRottboelliae0
Outcome
dry weight percentage allocation of root, stem and leafe0
Direction
decreasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum, the dry weight percentage allocation of spike, fruit and flower increased at higher nitrogen levels, while the dry weight percentage allocation of root, stem and leaf decreased as the amount of nitrogen application was increased”

✓ located verbatim in the source · abstract, characters 968–1229 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum reproductive allocation increased with nitrogen.

Taxon
SolanumSolanume0
Outcome
dry weight percentage allocation of spike, fruit and flowere0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum, the dry weight percentage allocation of spike, fruit and flower increased at higher nitrogen levels, while the dry weight percentage allocation of root, stem and leaf decreased as the amount of nitrogen application was increased”

✓ located verbatim in the source · abstract, characters 968–1229 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum vegetative allocation decreased with nitrogen.

Taxon
SolanumSolanume0
Outcome
dry weight percentage allocation of root, stem and leafe0
Direction
decreasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum, the dry weight percentage allocation of spike, fruit and flower increased at higher nitrogen levels, while the dry weight percentage allocation of root, stem and leaf decreased as the amount of nitrogen application was increased”

✓ located verbatim in the source · abstract, characters 968–1229 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia leaf area increased with nitrogen and peaked under N-20 at day 120.

Taxon
RottboelliaRottboelliae0
Outcome
leaf areae0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Rottboellia the leaf area increased with increasing nitrogen application reaching a maximum in the N-20 treatment at 120 days after seeding”

✓ located verbatim in the source · abstract, characters 1242–1384 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum leaf area peaked under N-40 at day 90 then fell rapidly.

Taxon
SolanumSolanume0
Outcome
leaf areae0
Direction
decreasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Solanum the leaf area reached a maximum in the N-40 treatment at 90 days after seeding and then decreased at a fast rate”

✓ located verbatim in the source · abstract, characters 1386–1509 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia heading was slightly delayed under N-40.

Taxon
RottboelliaRottboelliae0
Treatment
N-40 treatmente0
Outcome
headinge0
Direction
delayede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Rottboellia heading was delayed slightly in the N-40 treatment”

✓ located verbatim in the source · abstract, characters 1522–1587 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Solanum flowering was significantly delayed under N-40.

Taxon
SolanumSolanume0
Treatment
N-40 treatmente0
Outcome
floweringe0
Direction
delayede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“in Solanum flowering was delayed significantly in the N-40 treatment”

✓ located verbatim in the source · abstract, characters 1592–1660 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Rottboellia spike, fruit and flower values were greatest under N-20.

Taxon
RottboelliaRottboelliae0
Outcome
values of spike, fruit and flowere0
Direction
largeste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rottboellia
Rottboellia · Taxon · picture of the genus (one of its species)Keisotyo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum the values of spike, fruit and flower were largest in the N-20 treatment”

✓ located verbatim in the source · abstract, characters 1662–1766 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Solanum spike, fruit and flower values were greatest under N-20.

Taxon
SolanumSolanume0
Outcome
values of spike, fruit and flowere0
Direction
largeste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum
Solanum · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In both Rottboellia and Solanum the values of spike, fruit and flower were largest in the N-20 treatment”

✓ located verbatim in the source · abstract, characters 1662–1766 · show in text ↑