Competitive effects of redroot pigweed (<i>Amaranthus retroflexus</i>) on the growth indices and yield of corn

Sheibany, K.; Meybodi, Mohammad Ali Baghestani; Atri, A R

doi:10.1111/j.1445-6664.2009.00333.x

Cited by 19 publications

(17 citation statements)

References 37 publications

(37 reference statements)

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“…Due to its very high ecological plasticity (Schweizer & Zimdahl 1984a, 1984b, redroot pigweed can quickly colonise disturbed areas and become dense in agricultural fields (Costea et al 2004), particularly in maize, sugar beet, potatoes, grain sorghum, sunflower, soybean, vegetables, orchards and grape vines (Bürki et al 2001;Sheibany et al 2009). Damage occurs because of the very high growth rates, compared to crops and other native weeds (Pearcy & Ehleringer 1984;Crawley 1987;Bürki et al 2001;Mirshekari et al 2010) and high water use efficiency under drought conditions (Lovelli et al 2010a(Lovelli et al , 2010b.…”

Section: Introductionmentioning

confidence: 98%

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Cristaudo

Gresta

Restuccia

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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Experiments on redroot pigweed (Amaranthus retroflexus L.) were conducted to investigate whether the germinative response to environmental conditions is affected by the time of seed set. Seeds were collected in the same field (Sicily, Southern Italy) in May, July and October; each lot was dry-stored from 15 to 400 days after harvest (DAH) and submitted to germination assays from 15 to 408C, both in continuous darkness (D) and in alternate light/darkness regime (L/D). For the three lots, over 15 DAH, the response to temperature and light regime was strongly affected by harvesting time. Seeds set in May, negatively affected by L/D, showed a high germination capability (.80%) at 95 DAH from 25 to 408C. Seeds set in July were favoured by L/D and required at least 170 DAH to reach 80% germination capability. Seeds set in October were also favoured by L/ D and gave a good germination capability only at 300 and 400 DAH. These results prove that seed germination behaviour in redroot pigweed is not independent of the time of the year in which seeds are produced and is due to both the environmental conditions experienced by the mother plant during seed maturation and those experienced by seeds after seed set.

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Section: Introductionmentioning

confidence: 98%

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Cristaudo

Gresta

Restuccia

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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show abstract

“…Sheibany et al . stated a significant reduction in the LAI, crop growth rate (CGR) and total dry weight (TDW) of corn as a result of weed interference.…”

mentioning

confidence: 99%

Effect of weed interference on Zea mays: Growth analysis

Ghanizadeh

Lorzadeh

Aryannia

2014

Weed Biology and Management

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In order to investigate the effect of weed competition on corn, growth trials were conducted in Shushtar, Iran, using a comparative growth analysis. In this study, two sets of treatments were imposed, based on the phenological stages of corn development, using a randomized complete block design with three replicates. The results showed that barnyardgrass and redroot pigweed were the most dominant weeds in these trials. Increasing the duration of weed interference reduced the corn leaf area index gradually. The reduction in the corn leaf area index led to a decline in the crop growth rate as a result of a reduction in the ability of corn to capture light and its photosynthetic ability. The total dry matter and relative growth rate of corn were decreased when the weeds were removed later as a result of a reduction in the leaf area index. According to these results, the leaf area index has a critical role in weed–crop competition.

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“…A. hybridus and redroot pigweed (A. retroflexus L.) interference have been studied in a variety of field crops as major weeds that affect the productivity of beans (Phaseolus spp.) (Aguyoh and Masiunas, 2003;Amini et al, 2014;Mirshekari et al, 2014), soybean (Glycine max) (Bensch et al, 2003), corn (Zea mays) (Knezevic et al, 1994;Sheibany et al, 2009;Ghanizadeh et al, 2014) cotton (Gossypium hirsutum) (Buchanan and Burns, 1971;Buchanan et al, 1980) and yield of corn (Knezevic et al, 1995).…”

Section: Screen House Parametersmentioning

confidence: 99%

Effect of Lasiodiplodia pseudotheobromae Isolates, a Potential Bioherbicide for Amaranthus hybridus L. in Maize Culture

et al. 2017

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The use of phytopathogenic fungi in biological control of weeds may represent a promising alternative to the use of chemicals and may lead to the sustainability of agro-ecosystems. In the current study, strain C1136 was developed into various formulations and their activities were compared with a chemical herbicides using glyphosate in a screen house, applying standard procedure. All the bioherbicide treatments gave significantly higher yield component on the following parameters: tasselling, number of cobs, day of silking, number of ears, number of grain/cob, weight of 100 grains, number of cob, weight of cob, and length of cob from maize when compared to the chemical-treated herbicides and weedy cheek. Moreover, the bioherbicidal formulation coded BH4 (32 g of semolina + 6 g kaolin + 20 mL of glycerol + mutant strain of Lasiodiplodia pseudotheobromae + glucose+ sucrose + fructose + dextrose + lactose sugar + peptone) showed the highest activities when compared to other formulations. Conclusively, this study revealed that Lasiodiplodia pseudotheobromae C1136 strain has bioherbicidal activity and could therefore be exploited for large scale production of bioherbicides for weed control in conventional farming, to improve yield and enhance food security.

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Competitive effects of redroot pigweed (Amaranthus retroflexus) on the growth indices and yield of corn

Cited by 19 publications

References 37 publications

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Effect of weed interference on Zea mays: Growth analysis

Effect of Lasiodiplodia pseudotheobromae Isolates, a Potential Bioherbicide for Amaranthus hybridus L. in Maize Culture

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