Effect of Weed Management Practices in Chrysanthemum  (Dendranthema grandiflora T.) Under Tarai Conditions of Uttarakhand

Kumar, Amresh; Kumar, Manoj; Ghosh, Sanchita; Tewari, Tripti; Bhardwaj, Sneha

doi:10.20546/ijcmas.2017.608.362

Cited by 1 publication

(4 citation statements)

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“…In the control of leaf blight, both A. gaumeri and B. flammea aqueous extracts and the Captan® fungicide displayed the same effect in stopping the progress of the disease and improved upon what was reported by Kumar et al (2017) when evaluating garlic extracts (effectiveness of 36.64%) in the same crop. In addition, the A. gaumeri and B. flammea aqueous extracts displayed a greater effect in comparison with the Eucalyptus globolus and Ocimum sanctum aqueous extracts at 5% against the early potato blight (20.83 and 25.37%) (Debbarma et al, 2017).…”

Section: Mexican Journal Of Phytopathologymentioning

confidence: 55%

“…En el control del tizón foliar, ambos extractos acuosos de A. gaumeri y de B. flammea y el Fungicida Captan ® mostraron el mismo efecto, para detener el progreso de la enfermedad y mejoraron lo reportado por Kumar et al (2017) cuando evaluó extracto de ajo (efectividad 36.64%) en el mismo cultivo. También, los extractos acuosos de A. gaumeri y de B. flammea, mostraron un mayor efecto, en comparación con extractos acuosos de Eucalyptus globolus y Ocimum sanctum al 5% contra el tizón temprano de la papa (20.83 y 25.37%) (Debbarma et al, 2017).…”

Section: Mexican Journal Of Phytopathologyunclassified

“…The main control strategy against leaf blight is using synthetic fungicides (Kumar et al, 2017;Trolinger et al, 2018;Villanueva-Couoh et al, 2005;Xu et al, 2010). However, the recurring and inadequate use of these products has caused problems of resistance in fungal strains, environmental pollution and intoxications in producers (Carvalho, 2017;Kim et al, 2017;Barrera-Necha y Bautista-Baños, 2016;Shuping and Eloff, 2017).…”

mentioning

confidence: 99%

“…La principal estrategia de control del tizón foliar es con el uso de fungicidas sintéticos (Kumar et al, 2017;Trolinger et al, 2018;Villanueva-Couoh et al, 2005;Xu et al, 2010). Sin embargo, el uso recurrente e inadecuado de estos productos han causado problemas de resistencia en cepas de hongos, contaminación ambiental e intoxicaciones en los productores (Carvalho, 2017;Kim et al, 2017;Barrera-Necha y Bautista-Baños, 2016;Shuping y Eloff, 2017).…”

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Aqueous extracts from Acalypha gaumeri and Bonellia flammea for leaf blight control in chrysanthemum (Chrysanthemum morifolium)

Vargas-Díaz¹,

Cristóbal‐Alejo²,

Canto-Canché³

et al. 2021

RMF

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The chrysanthemum is the second most important cut flower in the world, however, its quality and commercial value is affected by the leaf blight produced by Alternaria spp. The objective of this work was to evaluate the causal agent of leaf blight in Chrysanthemum, and its control with aqueous extracts of Acalypha gaumeri and Bonellia flammea. The fungus was collected and identified from leaves and stems of chrysanthemum plants. Subsequently, molecular identification and pathogenicity tests were performed on chrysanthemum plants. In the field, treatments were evaluated with weekly applications of: T1: B. flammea bark extract, T2: A. gaumeri root extract, T3: negative control (water) and T4: Captan® fungicide. Prior to the application of the treatments, plants were inoculated with the isolated fungus (2.5 × 106 spores mL-1) and severity was evaluated. Alternaria chrysanthemi was identified as the causal agent. Based on the severity percentage, the lowest averages of the area under the disease progress curve, the lowest rates of apparent infection, the lowest intensity of the disease and the greater effectiveness in controlling the disease were observed for T2 (165, 0.017, 8 and 67%, respectively) followed by T1 (186, 0.022, 13 y 50 %, respectively) and T4 (179, 0.023, 14 y 45%, respectively), observing a significantly different than negative control T3 (369, 0.025, 25 and 0%, respectively). Plant extracts have potential to be used as an alternative in the management of Alternaria leaf blight in chrysanthemum.