Effect of Integrating Planting Time, Fungicide Application and Host Resistance on Potato Late Blight Development in South‐western Uganda

Kankwatsa, Peace; Adipala, E.; Hakiza, J. J.; Olanya, Modesto; Kidanemariam, H. M.

doi:10.1046/j.1439-0434.2002.00750.x

Cited by 17 publications

(14 citation statements)

References 10 publications

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“…It was, therefore, necessary to select a variety which can give high tuber yield and resistant to late blight. For commercial production of Irish potato, Kankwatsa et al (2002) suggested that use of resistant varieties reduced the late blight severity by more than 50% and resulted in yield gains of more than 30%, in the present study the variety Belete gave high tuber yield and tolerant to late blight.…”

Section: Discussionsupporting

confidence: 55%

Adaptability Study of Improved Irish Potato (Solanum tuberosum L.) Varieties at South Ari Woreda, Ethiopia

Mitiku¹

2015

AFF

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Three improved Irish potato varieties and one local check were evaluated with the objective of selecting adaptable best performing Irish potato varieties and tolerant to late blight for Irish potato production areas of South Omo zone. The trial was conducted at Senmamer kebele of Debub Ari district, Ethiopia during 2013 cropping seasons using randomized complete block design under rain faid condition. Tuber yield, plant height, number of stem, crop reaction to late blight, average number of tuber per plant, average weight of tuber per plant, average tuber diameter, small size tuber, medium size tuber and large size tuber ranged from 2.5 to 12.6, 30.3 to 58.9, 2.2 to 4.5, 5 to 47.8, 8.2 to 10.7, 0.14 to 0.78, 8.1 to 11.2, 0.04 to 0.2, 0.04 to 0.3, 0.05 to 0.3, respectively .This experiment suggests that the variety Belete was gave high yield and resistant to late blight compare to the other tested varieties.

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Section: Discussionsupporting

confidence: 55%

Adaptability Study of Improved Irish Potato (Solanum tuberosum L.) Varieties at South Ari Woreda, Ethiopia

Mitiku¹

2015

AFF

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“…This is in accordance with the findings of Samucha and Cohen (1986) who claimed better effect of the systemic and contact fungicides to control late blight of potato. For commercial production of potato Kankwasta et al, (2002) suggested that mancozeb application reduced the late blight severity more than 50% and increased yield more than 30%. De and Mohasin (1999) stated that Mancozeb gave the lowest disease incidence and highest yield and greatest net benefit against late blight.…”

Section: Resultsmentioning

confidence: 99%

Efficacy of fungicides in controlling late blight of potato

Anwar¹,

Parveen²,

Hossain³

et al. 2015

Progress. Agric.

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Potato cultivars grown in Bangladesh have low levels of general resistance to late blight. As such, most commercial potato farmers rely on fungicide applications for control of Phytophthora infestans, the causal agent of late blight. Management of late blight of potato requires an integrated approach that includes rotation with non-hosts, resistant cultivars, cultural practices, and fungicides. The study on efficacy of some new fungicides against late blight disease of potato was conducted at ARS, Alamnagar Rangpur during rabi season 2010-2011 to select suitable fungicides against late blight of potato. Thirteen different fungicides were tested and all the tested fungicides showed significantly better performance over control. Considering percentage disease incidence T4,T6 and T12 showed better performance than all other treatment. In case of T4,T6 and T12 treatment disease reduction was more than 80 % over control. Significantly the highest tuber yield 25.5 t ha-1was obtained from T3 which was statistically similar to the yield of T2,T5 , T6, T9, T10, T11and T12 treatment whereas the lowest tuber yield 14.5 t ha-1 was obtained from control treatment. Field experiment was conducted from 2010 to 2011 to investigate the comparative efficacy of the fungicides. In the field, applications of fungicide that preceded the largest incremental increase in disease incidence provided the best control of disease or increased yield.Progressive Agriculture 26 (2): 103-108, 2015

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“…No entanto, a PT foi maior do que no cultivo de primavera (Tabela 2), no qual praticamente não houve incidência de requeima. KANKWATSA et al (2002), após realizar experimentos para verificar a interação entre época de cultivo, aplicação de fungicidas e resistência de clones de batata à requeima, concluiu que a melhor resposta de produtividade em relação à aplicação de fungicidas ocorreu quando a requeima foi mais severa e a produtividade não depende somente do controle da requeima, mas de fatores como a constituição genética. Isso explicaria porque os clones Macaca e SMINIA793101-3, mesmo sendo severamente atacados pela requeima, produziram mais do que o clone SMIJ461-1 no outono de 2007.…”

Section: Resultsunclassified

Sistema de previsão de ocorrência de requeima em clones de batata suscetíveis e resistentes

et al. 2009

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Sistemas de previsão e cultivares resistentes à requeima são importantes ferramentas para reduzir a quantidade de fungicidas utilizados e os custos de produção da batata. O objetivo deste trabalho foi avaliar a utilização do sistema de previsão Blitecast e de clones suscetíveis e resistentes no manejo da requeima da cultura da batata na região produtora de Santa Maria, Rio Grande do Sul (RS). Os experimentos foram conduzidos na Universidade Federal de Santa Maria, na primavera de 2006 e no outono de 2007, sendo os dados meteorológicos medidos continuamente acima do dossel das plantas. Foram utilizados 10 tratamentos arranjados no delineamento inteiramente casualizado, com quatro repetições. Os tratamentos foram diferenciados pelos valores de severidade acumulados, calculados pelo sistema Blitecast, e pelos clones SMIJ461-1 e SMINIA793101-3, caracterizados como resistentes à requeima, e Macaca (suscetível). Verificou-se que o sistema Blitecast não foi eficiente para prever o momento de aplicação de fungicida no controle da requeima. Portanto, este deve sofrer ajustes para ser utilizado em clones suscetíveis. Nos clones considerados resistentes, a aplicação de fungicidas com base na utilização do sistema Blitecast não tem efeito sobre a severidade da requeima e a produtividade da cultura da batata.

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Effect of Integrating Planting Time, Fungicide Application and Host Resistance on Potato Late Blight Development in South‐western Uganda

Cited by 17 publications

References 10 publications

Adaptability Study of Improved Irish Potato (Solanum tuberosum L.) Varieties at South Ari Woreda, Ethiopia

Adaptability Study of Improved Irish Potato (Solanum tuberosum L.) Varieties at South Ari Woreda, Ethiopia

Efficacy of fungicides in controlling late blight of potato

Sistema de previsão de ocorrência de requeima em clones de batata suscetíveis e resistentes

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