Intercropping corn with soybean, lupin and forages: weed control by intercrops combined with interrow cultivation

Carruthers, K; Fe, Q.; Cloutier, D. C.; Smith, Donald L.

doi:10.1016/s1161-0301(97)00062-2

Cited by 42 publications

(34 citation statements)

References 12 publications

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“…Weeds decrease the yield of crops, by competing with them for water, nutrients, and light (Carruthers et al, 1998). Nutrient extraction by weeds has an impact on the availability of nutrients for the crop, thus affecting dry matter accumulation, as observed in this work (Table 4).…”

Section: Resultssupporting

confidence: 55%

Growth and yield of corn grain and green ear in competition with weeds

et al. 2009

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Studies on plant growth are interesting because they provide explanations for the factors that influence yield in various crops. The objective of this work was to evaluate growth and yield in corn cultivar AG1051, when in competition with weeds. Cultivar AG 1051 was submitted to two groups of treatments: weed control, and sampling periods for dry biomass evaluation. The weed control treatments consisted of hoeing (two hoeings performed at 20 and 40 days after sowing) and no hoeing. Sampling periods consisted of collecting the above-ground part and roots of corn every fifteen days, until 105 days after sowing (DAS); the first sampling was performed 30 DAS. A completely randomized block design with ten replicates was used. For the characteristics evaluated in a single season, statistical analyses were carried out as a random block experiment. For the characteristics evaluated in several periods, statistical analyses were carried out as random blocks with split-plots (weed control assigned to plots). Fourteen weed species, unevenly distributed throughout the experimental area, were the most important. The growth observed for the above-ground part and root system of corn was 30% smaller in the non-hoed plots, compared to the hoed plots. Lack of weed control increased dry matter of the above-ground part of the weeds and reduced the number of unhusked and husked marketable green ears by 23% and 49%, respectively. Grain yield reduction caused by lack of weed control reached 38%.

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Section: Resultssupporting

confidence: 55%

Growth and yield of corn grain and green ear in competition with weeds

et al. 2009

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“…This may have occurred due to corn competition with weeds for water, light, and nutrients (Carruthers et al, 1998), but also or mainly because weeds cause reductions in the corn root system and leaf area (Silva et al, 2009c) and may produce allelopathic substances that may be harmful to corn (Rajcan & Swanton, 2001). For similar reasons, gliricidia may have benefited corn, negatively influencing the weeds.…”

Section: Resultsmentioning

confidence: 99%

Weed control in corn via intercropping with gliricidia sown by broadcasting

Oliveira¹,

Silva

Albuquerque

et al. 2011

Planta daninha

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There has been interest in reducing the use of herbicides for weed control in order to decrease environmental degradation problems. The objective of this study was to evaluate the effects of gliricidia planting density sown by broadcasting and intercopping on green ear and corn grain yield as well as on weed control. A randomized block design with split-plots and five replicates were adopted. Cultivars AG 1051, BM 2022, and BM 3061, assigned to plots, were submitted to the following treatments: no hoeing, two hoeings (at 20 and 40 days after sowing), and intercropped with gliricidia sown at densities of 10 and 20 seeds m-2. Thirty weed species occurred in the experiment area, with Cucumis anguria as the most frequent ones. Cultivar BM 2022 was the best for the total number of ears (TNE) and number (NMHE) and weight of marketable husked ears. Together with cultivar AG 1051, this cultivar had the highest total weight and marketable unhusked ear weight (MUEW). However, the cultivars did not differ with respect to grain yield (GY). The highest green ear and corn grain yield and weed control percentages were obtained with two hoeings; in MUEW, NMHE and GY, intercropping provided intermediate means in comparison with those obtained in hoed and non-hoed plots, indicating that gliricidia was partially beneficial to corn. Increased gliricidia seeding density heightened the benefits to corn (TNE and MUEW). The lack of hoeing produced the poorest green ear and grain yields.

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“…Our results are in agreement with Fernández-Aparicio et al (2007), who demonstrated that intercropping with cereals decreases infection by O. crenata in legumes, and allelochemicals released by cereal roots inhibited O. crenata seed germination. A limiting effect of intercropping on the number and biomass of weeds has been reported by a number of researchers (Carruthers et al 1998;Poggio 2005;Amanullah et al 2006;Banik et al 2006;Gharineh and Moosavi 2010;Eskandari and Kazemi 2011).…”

Section: Discussionmentioning

confidence: 97%

Effects of wheat-canola intercropping on Phelipanche aegyptiaca parasitism

Razavifar

Karimmojeni

Sini

2017

Journal of Plant Protection Research

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Parasitic weeds especially Phelipanche aegyptiaca decrease severely the production of canola. This study evaluated the effect of intercropping different wheat genotypes with canola on Phelipanche aegyptiaca growth. Ten wild wheat genotypes with different ploidy levels including TRI11712, TRI19322, TRI18664, TRI19652, TRI565, TRI15593, TRI12911, TRI11554, TRI17606, TRI7259P and seven cultivated bread wheats, namely: Falat, Chamran, Alamut, Baiat, Kavir, Sepahan, Alvand in addition to a canola cultivar called Zarfam were studied. The results revealed that intercropping of canola with wheat could significantly reduce broomrape growth depending on the type of wheat genotype. A significant genetic variation of allelopathic activity in wheat was observed, indicating the contribution of multiple genes conferring the allelopathic trait. TRI565 and TRI12911, TRI15593, TRI18664, TRI19652, TRI17606, TRI19322, and TRI7259 genotypes showed strong inhibitory effects and can be considered as potential allelopathic genotypes to suppress broomrape. The inhibitory potential of wild wheat genotypes was stronger than cultivated wheat genotypes. Alamut, Baiat, Alvand, Sepahan, and TRI11712 possessed strong stimulatory effects on broomrape germination. Such genotypes may be valuable as trap crops for depleting the Egyptian broomrape seed bank.

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Intercropping corn with soybean, lupin and forages: weed control by intercrops combined with interrow cultivation

Cited by 42 publications

References 12 publications

Growth and yield of corn grain and green ear in competition with weeds

Growth and yield of corn grain and green ear in competition with weeds

Weed control in corn via intercropping with gliricidia sown by broadcasting

Effects of wheat-canola intercropping on Phelipanche aegyptiaca parasitism

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