Browsing by Autor "Coca Morante M"

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Emergent Potato Leaf Spot Diseases in the Highland and Lowland Regions of Bolivia
(OMICS Publishing Group, 2016) Coca Morante M
In January and February of 2012, 2013 and 2014, survey expeditions were made to record the leaf spot diseases affecting potato plants in Bolivia's traditional highland growing areas of the Departments of La Paz (around 4350 m) and Cochabamba (2900-3300 m), and in the
Explosive Outbreak of Dalbulus Sp. and Corn Stunt Disease Associated to Climatic Variations in the Cochabamba Inter-Andean Valley, Bolivia
(BiomedGrid, 2025) Coca Morante M
Corn (Zea mays L.) is a cereal that is traditionally grown in the inter-Andean valleys of Bolivia.Cochabamba inter-Andean Valley -2400 to 2700 meters above sea level -includes lower, central and high valleys, and diversity local varieties are grown for consumption such as "Choclo" and grain."Hualtaco" white corn is the most cultivated variety.Due the climate variations -temperature and rainfall-, water and intensive use of technology, winter corn -July to December -cultivation was promoted throughout the Cochabamba valley, generating an early planting different from the traditional summer planting -November to April.This led to a gradual proliferation of Dalbulus sp., as well as the emergence of the stunt or "Palmarado" disease corn.Stunt corn disease, presenting symptoms such as reddening of the leaves, short internodes, proliferation of ears and dwarfism, is Caused by Spiroplasma (CSS) and/ or phytoplasma (MBSP).According to technical reports, since the 1960s, Dalbulus sp. had a proliferation process and stunt disease began to be reported in the 1970s.Approximately, since the 1980s, in the lower and central valley, Hualtaco corn variety for "Choclo" stopped being cultivated due to the stunt disease corn.In the high valley, in a similar process, both Dalbulus sp and stunt disease corn were spread.In 2008, it was reported that Dalbulus and stunt disease corn were scattered throughout the valley.In 2018, was recorded severe damage to the "Choclo" production in communities in Toco municipality.In 2024, an outbreak was recorded with severe losses in the same communities in Toco and Punata municipalities, and other high valleys.In conclusion, Dalbulus sp and the stunt or "Palmarado" corn disease are widespread throughout the valley, due to the change in the cropping system and climatic variations causing severe losses in corn production.
Record of rust diseases of the Chrysanthemum, Gladiolus and Limonio in the Cochabamba Valley, Bolivia
(2020) Coca Morante M; Acosta Alcázar JC
Flower production is an important economic activity in the Cochabamba Valley, Bolivia. Species and varieties of Roses (Rosa sp-), Chrysanthemums (Chrysantemum sp.), Carnations (Dianthus carophyllus), Gladiolus (Gladiolus communis), Saticias (Limonium sp.), Liliums (Liliums sp.,) etc. are grown. Rusts affect a variety of crops, including flowers. The aim of this study, was identify the rust diseases that is affecting to three important flower species. Stems and leaves of samples with characteristic rust symptoms of smallholder farmer parcels were collected between 2016 and 2018 of the Chrysantemum grandiflorum, G. communis and Limonium sp. Based on morphometric studies the causal agent of rust diseases was identify as the first record to Puccinia horiana on chrysanthemum, Uromyces transversalis on Gladiolus and Uromyces limonii on Limonio in the Cochabamba Valley, Bolivia.
Record of Sugarcane Orange Rust in the Lowland Tropics of Santa Cruz, Bolivia
(OMICS Publishing Group, 2018) Coca Morante M
Sugarcane is an important crop in the eastern region of Bolivia. Rusts are one of the main diseases that affect this crop. At Latin American level reports are known about the emergence of the new rust known as orange rust. In July 2017, samplings of leaves with apparent symptoms of orange rust were carried out in production fields in the Saavedra and Mineros municipalities of the Santa Cruz department. After analysing in the laboratory, it was recorded that uredinias, urediospores, telias and teliospores correspond to Puccinia kuehnii E. J. Butler causal agent of sugarcane orange rust. This is the first record of the orange rust in Bolivia.