Claim · model-written summary
The highest yield decrease from weed competition was in the E. crus-galli ssp. hispidula and S. maritimus community.
- Taxon
- rice
Oryza sativat0
- Interactor
- E. crus-galli ssp. hispidula
Echinochloa crus-galli subsp. hispidulae7weed - Second interactor
- S. Maritimuse7weed
- Outcome
- yield decrease due to weed competitione7
- Direction
- higheste7
Verbatim
t0“transplanted lowland rice”
e7“The highest yield decrease due to weed competition was obtained from the E. crus-galli ssp. hispidula-S. Maritimus community”
Title
Seung‐Chul Kim; K. Moody The Korean Journal of Crop Science 1980
Other claims from this paper (14)
- Observation Eight weed community types were identified in association with transplanted rice.
- Observation The importance value of weed species growing with rice changed with time.
- Observation The importance value of Echinochloa glabrescens increased from 40 DAT until heading.
- Observation The importance value of Echinochloa glabrescens decreased from heading to maturity of rice.
- Observation The importance value of Monochoria vaginalis increased from 40 DAT to maturity.
- Observation The importance value of Echinochloa crus-galli ssp. hispidula increased from 40 DAT to maturity.
- Observation The importance value of Scirpus maritimus decreased from 40 DAT.
- Association Grain yield was negatively correlated with weed weight at rice heading in all weed communities.
- Observation The competitive ability of rice against weeds varied with weed species.
- Association Competition by 100 g dry weight of weeds per square meter of the E. crus-galli ssp. hispidula and S. maritimus community caused a 42% yield reduction at rice heading.
- Association For the same weed amount, yield decrease was 10% in the E. glabrescens community.
- Association For the same weed amount, yield decrease was 15% in the M vaginalis community.
- Association For the same weed amount, yield decrease was 15% in the M vaginalis-Scirpus supinus L. community.
- Association For the same weed amount, yield decrease was 21% in the M vaginalis-E. glabrescens-Fimbristylis littoralis-S. maritimus community.