Smooth Pigweed (Amaranthus hybridusL.) and Livid Amaranth (Amaranthus lividus) Interference with Cucumber (Cucumis sativus)

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

doi:10.1614/wt-04-239r.1

Cited by 9 publications

(21 citation statements)

References 5 publications

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“…The results of the replacement series also indicate that cucumber is a competitive crop and that smooth pigweed and livid amaranth both equally interfere with each other. These data are supported by findings from a season-long competition study, which demonstrated the equally negative effects of smooth pigweed and livid amaranth competition with cucumber (Berry et al 2005). Because the replacement study was ended before the cucumber plants fruited, the competition/ AG of cucumber is only based on vegetative (foliage) growth.…”

Section: Resultssupporting

confidence: 72%

Aggressivity: Cucumber vs. Amaranth

et al. 2006

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A replacement series study was conducted to describe the aggressivity between cucumber, smooth pigweed, and livid amaranth. Cucumber was three times more competitive than smooth pigweed or livid amaranth, under the conditions of this study. However, there was equal competition and no antagonism between smooth pigweed and livid amaranth. Where cucumbers were planted in mixture with either of the two weeds, the relative yield total values were approximately 10 to 20% higher than the monocultures. Cucumber was a superior competitor when grown in mixture with smooth pigweed or livid amaranth, and the following aggressivity hierarchy exists: cucumber > livid amaranth = smooth pigweed. Results from the additive field study indicated that amaranth dry weights were significantly affected by smooth pigweed and livid amaranth density. Dry weight of amaranth was decreased by 48% at Gainesville and 25% at Live Oak, at 18 plants/m2. Despite differences between the Gainesville and Live Oak results, the dry weight data were similar for both smooth pigweed and livid amaranth at each location.

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Section: Resultssupporting

confidence: 72%

Aggressivity: Cucumber vs. Amaranth

et al. 2006

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“…Predominant weed species especially common lambsquarters and spiny amaranth had prolific growth and development. Amaranthus species and common lambsquarters have been reported to result in up to 100% yield loss in several crops following season-long interference (Aguyoh and Masiunas, 2003b;Berry et al, 2006;Fischer et al, 2004;Massinga et al, 2001;Meyers et al, 2010). Our results show that snap bean is very vulnerable to weed interference from the early stages of its growth in the EAA.…”

Section: Resultsmentioning

confidence: 68%

Critical Period of Weed Control in Snap Bean on Organic Soils in South Florida

Odero

Wright

2018

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Field studies were conducted in 2011 and 2012 in Belle Glade, FL, to evaluate the critical period of weed control (CPWC) in snap bean grown on organic soils in the Everglades Agricultural Area (EAA) of South Florida. Treatments consisting of increasing duration of weed interference and weed-free period were imposed at weekly intervals from 0 to 7 weeks after emergence (WAE) of snap bean. The beginning and end of the CPWC based on 2.5%, 5%, and 10% snap bean acceptable yield loss (AYL) levels were determined by fitting log-logistic and Gompertz models to represent increasing duration of weed interference and weed-free period, respectively. Based on 2.5% yield loss, the CPWC was 7.2 weeks long, beginning 1.2 (cotyledon and unifoliate leaf) and ending 8.4 WAE (mid-pod set, 50% of pods reached maximum length). At 5% yield loss, the CPWC was 5.0 weeks, beginning 1.7 (first to second trifoliate leaf) and ending 6.7 WAE (mid-flower to early pod set, 50% of flowers open and one pod reached maximum length). At 10% yield loss, the CPWC was 3.0 weeks, beginning 2.2 (second trifoliate leaf) and ending 5.2 WAE (early flowering, one open flower). Based on these results, the beginning of CPWC was hastened, whereas the end was delayed at different yield loss levels showing that acceptable weed control in snap bean on organic soils in the EAA is required throughout much of the growing season to minimize yield loss.

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“…However, intercropping is a more complex production system than monoculture [1], and its efficiency depends directly on the species and management practices [4,5]. Lettuce and cucumber differ in cycle length, size, architecture [3], light demand [6,7], nutrient demand, and other important traits in intercropping systems. These differences allow optimizing the complementarity between the species, both temporally and spatially, with a better use of available resources, thereby minimizing possible interspecific competition [8].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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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’.

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Smooth Pigweed (Amaranthus hybridusL.) and Livid Amaranth (Amaranthus lividus) Interference with Cucumber (Cucumis sativus)

Cited by 9 publications

References 5 publications

Aggressivity: Cucumber vs. Amaranth

Aggressivity: Cucumber vs. Amaranth

Critical Period of Weed Control in Snap Bean on Organic Soils in South Florida

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

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