Aggressivity: Cucumber vs. Amaranth

Berry, Adrian D.; Stall, William M.; Rathinasabapathi, Bala; MacDonald, Gregory E.; Charudattan, R.

doi:10.1614/wt-04-270.1

Cited by 6 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Berry et al 2006;Ikeorgu 1990;Kroh and Stephenson 1980;Rushing et al 1985). Smooth pigweed was shown to be a better competitor than lettuce (Lactuca sativa L).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Competitiveness of Three Leguminous Cover Crops with Yellow Nutsedge (Cyperus esculentus) and Smooth Pigweed (Amaranthus hybridus)

et al. 2007

Self Cite

View full text Add to dashboard Cite

Greenhouse replacement-series experiments were conducted to evaluate the competitiveness of cowpea, sunn hemp, and velvetbean when grown in combination with yellow nutsedge and smooth pigweed. The effect of the cover crop species on yellow nutsedge tuber production was also evaluated. Cowpea and velvetbean were equally competitive with yellow nutsedge, but sunn hemp was less competitive. Although sunn hemp height was double that of cowpea or velvetbean, photosynthetically active radiation penetrating to the soil surface was twofold to eightfold greater than with the other two species. Leaf area per plant with sunn hemp monocultures were only 63 to 70% of cowpea and 37 to 41% of velvetbean. Increasing the proportion of cover crops in crop : weed mixtures did not significantly affect nutsedge tuber number per plant or tuber weight per plant. Cowpea was more competitive than smooth pigweed, whereas both sunn hemp and velvetbean were less competitive than smooth pigweed. The utility and efficacy of leguminous cover crop species for nutsedge and smooth pigweed suppression do not appear to be due to inherent competitiveness. Until cultivars that are more competitive become available, cultural measures should be employed that enhance cover crop modification of soil environmental conditions to minimize weed seed germination and vegetative propagule sprouting.

show abstract

“…(Berry et al 2006;Ikeorgu 1990;Kroh and Stephenson 1980;Rushing et al 1985). Smooth pigweed was shown to be a better competitor than lettuce (Lactuca sativa L).…”

Section: Resultsmentioning

confidence: 99%

“…Results in this study that show that smooth pigweed grew better in mixture than in monoculture are consistent with previous reports for smooth pigweed and other Amaranthus spp. (Berry et al 2006;Ikeorgu 1990;Kroh and Stephenson 1980;Rushing et al 1985). Smooth pigweed was shown to be a better competitor than lettuce (Lactuca sativa L).…”

Section: Resultsmentioning

confidence: 99%

Competitiveness of Three Leguminous Cover Crops with Yellow Nutsedge (Cyperus esculentus) and Smooth Pigweed (Amaranthus hybridus)

et al. 2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…Species in intercropping systems benefit from having leaves in a higher stratum, where light intensity is higher, decreasing and/or nullifying the interference of the coexisting species [35][36][37][38]. These characteristics classify cucumber as the dominant, most aggressive crop in the competition between these two intercropped species [3,39].…”

Section: Discussionmentioning

confidence: 99%

Land Equivalent Ratio in the Intercropping of Cucumber with Lettuce as a Function of Cucumber Population Density

et al. 2020

View full text Add to dashboard Cite

Lettuce and cucumber are two important vegetables cultivated in greenhouses. Intercropping can increase the yield without increasing the demands for inputs. A more efficient use of resources in production systems can reduce costs and environmental impacts. We evaluated the land equivalent ratio (LER) of intercropping cucumber and lettuce as a function of the cucumber population. An experiment was conducted in a greenhouse to evaluate the cucumber population density (100, 85, 70, and 55% of 2.35 plants m−2) and two lettuce cultivars, ‘Lucy Brown’ and ‘Vanda’. The cucumber population density affected the amount of photosynthetically active radiation that reached the lettuce. The higher the density, the lower the total fresh mass and yield of the two lettuce cultivars. Fruit yield per plant and per area decreased and increased, respectively, as the density increased. LER was highest when cucumber was intercropped with ‘Vanda’ lettuce. LER increased with the density of ‘Vanda’ but decreased for ‘Lucy Brown’. ‘Lucy Brown’ produced commercial traits (head formation) only at the lowest density (55%). The presence of lettuce did not affect the cucumber yield per plant or per area. The intercropped system used land more efficiently than monocultured crops of lettuce and cucumber, with better results for ‘Vanda’ than ‘Lucy Brown’.

show abstract

“…It is likely that not only competition to nutrients but also other types of interactions, including allelopathy, are involved. The study of Berry et al (2006) showed that the density of A. lividus, 1 to 2 plants/m 2 , caused a 10% yield reduction of cucumber. Also, Morales-Payan and Stall (2002) reported that C. annuum yield was reduced by 67% when competing with 6 A. lividus per square meter of field throughout an entire season.…”

Section: Additive Experiments (Exp 1)mentioning

confidence: 99%

Competitive Ability of Capsicum annuum L. Relative to the Weed Amaranthus lividus L.

Omezine¹,

Silva²

2016

Journal of Horticultural Research

View full text Add to dashboard Cite

Single-phase Pr 2 CBr was prepared by heating a mixture of PrBr 3 , Pr and C (1 : 5:3) to 1140 • C for 18 d. The crystal structure was investigated by X-ray single crystal diffraction (space group P6 3 /mmc, a = 3.8071 (3), c = 14.7787(12)Å). In the structure the Pr atoms form C-centered octahedra condensed into Pr 2 C sheets via common edges; these sheets are separated by the Br atoms which are in a trigonal prismatic environment of Pr atoms. Pr 2 CBr is a black shiny compound with metallic conductivity. It is a ferromagnet with T c = 13.8(5) K.

show abstract

Aggressivity: Cucumber vs. Amaranth

Cited by 6 publications

References 22 publications

Competitiveness of Three Leguminous Cover Crops with Yellow Nutsedge (Cyperus esculentus) and Smooth Pigweed (Amaranthus hybridus)

Competitiveness of Three Leguminous Cover Crops with Yellow Nutsedge (Cyperus esculentus) and Smooth Pigweed (Amaranthus hybridus)

Land Equivalent Ratio in the Intercropping of Cucumber with Lettuce as a Function of Cucumber Population Density

Competitive Ability of Capsicum annuum L. Relative to the Weed Amaranthus lividus L.

Contact Info

Product

Resources

About