Screening Cover Crops for Weed Suppression in Conservation Agriculture

Phophi, Mutondwa M.; Mafongoya, Paramu; Odindo, Alfred; Magwaza, Lembe Samukelo

doi:10.5539/sar.v6n4p124

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Bybee-Finley et al, (2017) found several negative relationships between crop species richness and weed biomass and crop biomass was found to be a more important factor than species richness for suppression of weeds. Phophi et al (2017) reported that, lablab and velvet bean (cover crop) had significantly lower weed species diversity at week 16 compared to the rest of the treatments, and also they found that, herbicide causes high weed species diversity. In this experiment it was observed that some species change under the influence of cover crop plants.…”

Section: Articlementioning

confidence: 98%

Effect of four pre-planted cover crop species on weed control and population dynamics

et al. 2020

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The present research was conducted to assess the competition of four cover crop species including the Festuca ovina L., Festuca rubra L., Agropyron desertorum (Fischer ex Link) Shultes, and Bromus tomentellus Boiss with the weeds as well as enhancement of their establishment. B. tomentellus with 7.7 and 8.73 t h–1 had the highest dry weight production in 2016 and 2017, respectively. In 2016, the highest reduction in the dry weight of the weeds (73%) was observed for the F. ovina, at the rate of 600 g active ingredient per ha–1 of herbicide. In 2017, the highest reduction in the dry weight of the weeds (90%) was recorded at the rate of 600 g active ingredient per ha–1 of herbicide for the. Dry weight of the dominant weeds decreased by 70% approximately with the and at the rate of 600 g active ingredient per ha–1 of herbicide. Shannon Wiener index decreased in all the treatments following the increase in the herbicide concentrations in 2016 and 2017. The interaction of cover crop species and herbicide on the Margalef index was significant in all the treatments in 2016 except for A. desertorum, as well as A. desertorum and in 2017. Margalef index reduced following the increase in the herbicide concentration in all the treatments. Highlights - Bromus tomentellus Bioss and Festuca ovina L had the highest biomass production. - Bromus tomentellus (90%) and Festuca ovina (73%) treatments had the highest decrease in total weed dry weight compared to control. - The highest reduction in dry weight of total dominant weeds was influenced by B. tomentellus and Festuca ovina 73% and 83% at the rate of 600 g a.i. ha–1 of Bromocide M.A. EC respectively. - Margalof index reduced following the increase in herbicide concentration in all treatments. - Bromus tomentellus, Festuca ovina has the potential for reducing weeds in orchards and croplands.

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Section: Articlementioning

confidence: 98%

Effect of four pre-planted cover crop species on weed control and population dynamics

et al. 2020

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“…Known for its vigorous growth, cowpea is well-adapted to hot climatic conditions. However, herbicides did not exhibit effective weed suppression, largely attributed to suboptimal herbicide application methods (Mutondiwa et al, 2018) [40] .…”

Section: Crop Residue and Cover Cropsmentioning

confidence: 99%

Weed management strategies for conservation agriculture: A review

Navi,

Mopagar,

et al. 2024

Int. J. Res. Agron.

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Conservation agriculture (CA) represents an agricultural management approach characterized by minimal soil disturbance, the retention of residue for soil cover, and crop rotation at its core. In contrast, conventional agricultural practices involve intensive tillage, clean cultivation, and excessive agrochemical use, contributing to environmental deterioration and pollution. The main goals of implementing conservation agriculture practices include promoting agricultural sustainability, conserving resources and improving the biological functions of the agro-ecosystem, all achieved by minimizing mechanical interventions and using external inputs thoughtfully. However, the adoption of CA faces challenges in managing weeds due to alterations in tillage patterns, planting systems, and other management strategies.The key strategy for mitigating weed infestation in CA involves preventing field contamination. Various techniques, such as adjusting crop planting dates, increasing crop density, employing band placement of fertilizer, breeding competitive cultivars with allelopathic effects, retaining crop residue, practicing crop rotation, and utilizing the stale seed bed technique can be employed for effective weed control. Herbicides are considered as integral part of weed management in CA, can be used in conjunction with other options to optimize results. To enhance weed control efficacy in CA, it is crucial to integrate diverse weed management strategies, as no single method can provide the desired level of control. A comprehensive approach ensures a broader spectrum of weed control under CA practices.

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“…In the developing world where soil infertility is high; it gives to the soil a huge supply of nitrogen and permits its cultivation without the use of nitrogenous fertilizer [5]. It also suppresses weeds and prevents soil erosion [6].…”

Section: Introductionmentioning

confidence: 99%

Growth and Yield Variability in Cowpea (Vigna unguiculata L. Walp.) Cultivars Infected with Cowpea Aphid-Borne Mosaic Virus and Southern Bean Mosaic Virus

mamman¹,

Salaudeen²,

Wada³

2018

AJRCS

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Eight cowpea (Vigna unguiculata L. Walp.) cultivars were evaluated for Cowpea aphid-borne mosaic virus (CABMV), Southern bean mosaic virus (SBMV), CABMV+SBMV, and SBMV+CABMV resistance under screenhouse conditions at the School of Agriculture and Agricultural Technology Minna, Nigeria in 2016 (lat.9 o 40ʹN; long 6 o 30ʹE at an altitude of 220m.a.s.l). Virus infected plants were evaluated independently using a Completely Randomized Design with three replications. In single infections, cowpea seedlings were inoculated at 10 days after sowing (DAS) while in mixed infections the second virus inoculation was performed at 21 DAS. Disease incidence, symptom severity, plant's growth and yield characters were recorded. The data were subjected to analysis of Original Research Article

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Screening Cover Crops for Weed Suppression in Conservation Agriculture

Cited by 3 publications

References 11 publications

Effect of four pre-planted cover crop species on weed control and population dynamics

Effect of four pre-planted cover crop species on weed control and population dynamics

Weed management strategies for conservation agriculture: A review

Growth and Yield Variability in Cowpea (Vigna unguiculata L. Walp.) Cultivars Infected with Cowpea Aphid-Borne Mosaic Virus and Southern Bean Mosaic Virus

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