Influence of Fungicides and Fungicide Spray Regimes on Vegetative Growth and Yield of Three Cultivars of Cocoyam (Colocasia esculenta L.) in Early and Late Planting Seasons in Nsukka Derived Savanna

Omeje, T. E.; Ugwuoke, K. I.; Ikenganyia, E. E.; Aba, SC; Nzekwe, C

doi:10.9734/jeai/2017/25061

Cited by 2 publications

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“…The cropping systems provide a shaded environment, the microenvironment of high soil air humidity or poor air movement and less sunlight penetration, more after raindrop effects which promote more TLB disease severity and subsequent unrestricted weed infestation problem in defoliated taro fields. The open fields cultivation system should be encouraged to reduce certain microenvironments which promote the disease severity, high weed infestation and also inoculums spread as crop intensity arising from the intercropping and interplanting system or mixed cropping has a significant bearing on the present type and amount of pests, weeds and disease development in recent taro fields 22 .…”

Section: Introductionmentioning

confidence: 99%

Weed Management Strategies in Colocasia esculenta Field Caused by Phytophthora colocasiae and Global Climate Change

Omeje¹,

Awere²,

Adinde³

2022

International J. of Agricultural Research

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Food losses due to weed infestation in taro fields are major issues of agriculture at the global scale in the recent outbreak of Phytophthora colocasiae and the increasing impact of climate change associated with high erratic rainfall conditions. The high rate of weed infestation has been a serious problem to taro farmers and researchers since the arrival of Phytophthora leaf blight disease and the recent effect of climate change associated with high erratic rainfall conditions during the peak growth and development of taro resulting in high weed infestation in highly defoliated taro fields. These factors have reduced the unique attributes of taro as shade tolerant and weed suppressive crop in the present taro cropping systems resulting in low yields if weed management strategies are not effectively adopted. Proper weed management option has been a very essential cultural operation for improved taro production and pests/disease incidence and severity reduction. Therefore, a review on measures to manage high weed infestation in defoliated taro field caused by Phytophthora leaf blight disease and climate change have been discussed in detail in light of well-documented research findings, conferences/workshops of the past and observation from many experienced taro producers and field extension workers.

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Section: Introductionmentioning

confidence: 99%

Weed Management Strategies in Colocasia esculenta Field Caused by Phytophthora colocasiae and Global Climate Change

Omeje¹,

Awere²,

Adinde³

2022

International J. of Agricultural Research

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“…Leaf blight is a highly infectious fungal plant disease that is characterized by the formation of large brown lesions on the leaves of infected taro plants. [1] Lesions are the result of oomycetes leaching nutrients out of the leaves via haustoria to create white powdery rings of sporangia [4] This pathogen grows best in high humidity and high rainfall environment offering the pathogen means of dispersal via rain splash as well as a warm humid environment that favors hyphal growth across the infected plant [5]. [6] found that blight epidemics occur when night and day temperatures ranged between 20 -22°C and 25 -28°C, respectively, with a relative humidity of 65% during the day and 100% at night and accompanied by overcast rainy weather.…”

Section: Introductionmentioning

confidence: 99%

“…Early planting of cocoyam (April -June) has been reported in order to control leaf blight and improve growth and yield in the field [1]. [2,5] Chemical control of P. colocasiae has offered some relief in the form of preventative sprays containing copper, manganese, and zinc.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Empty Oil Palm Bunch Ash on Vegetative Growth and Control of Leaf Blight Disease of Cocoyam [Colocasia esculenta (L.) Schott.] Caused by Phytophthora colocasiae

Omeje¹,

Ikenganyia²,

Awere³

et al. 2018

IJPSS

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incidence and severity were non-significant (p > 0.05) at 90 and 120 days after planting respectively. The use of EOPBA as a soil amendment and for the control of cocoyam leaf blight diseases caused by Phytophthora colocasiae revealed that it has the potentials of promoting vegetative growth of cocoyam [Colocasia esculenta (L.) Schott.] grown in a degraded ultisol. This study also revealed that EOPBA does not have any significant effect (p > 0.05) in the control of cocoyam leaf blight incidence and severity. Application of 2 t ha -1 was found to be an optimal dose in the enhancement of cocoyam vegetative growth (leaf area index, number of leaves, stem girth and plant height respectively).

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Influence of Fungicides and Fungicide Spray Regimes on Vegetative Growth and Yield of Three Cultivars of Cocoyam (Colocasia esculenta L.) in Early and Late Planting Seasons in Nsukka Derived Savanna

Cited by 2 publications

References 0 publications

Weed Management Strategies in Colocasia esculenta Field Caused by Phytophthora colocasiae and Global Climate Change

Weed Management Strategies in Colocasia esculenta Field Caused by Phytophthora colocasiae and Global Climate Change

Influence of Empty Oil Palm Bunch Ash on Vegetative Growth and Control of Leaf Blight Disease of Cocoyam [Colocasia esculenta (L.) Schott.] Caused by Phytophthora colocasiae

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