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Isolamento de fungos de solo associados a culturas de amora, framboesa e mirtilo no sul do Brasil.

Pinotti, Maria Margareth Zamboni; Santos, Júlio César Pires; Klauberg Filho, Osmar ; Castro, Ricardo Lima de and Michelluti, David José (2011) Isolamento de fungos de solo associados a culturas de amora, framboesa e mirtilo no sul do Brasil. [Isolation of soil fungi associated to the cultures of blackberry, raspberry and blueberry in brazilian southern highland.] Revista Brasileira de Agroecologia, 6 (1), pp. 67-80.

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Online at: http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/article/view/9848/pdf

Summary

Os fungos de solo constituem inúmeras espécies, que sofrem alterações por diversos fatores. Dentre estes é possível destacar o manejo e características químicas do solo utilizado no estabelecimento de diferentes culturas. Este trabalho objetivou o isolamento de fungos mais frequêntes no solo associados a culturas de amora (Rubus sp),Framboesa (Rubus idaeaus) e mirtilo (Vaccinium spp) em manejo integrado e convencional, em Latossolo bruno, na região de Vacaria, situada no nordeste do Rio Grande do Sul, Brasil. As amostras de solo foram coletadas sempre pela manhã, em quatro pontos da região em quatro datas entre junho de 2008 e março de 2009. As amostras coletadas foram diluídas até 10-3, colocadas em placas de Petri de 9 cm de diâmetro contendo meio BDA acrescido de antibiótico e submetidas a incubação a 25ºC com fotoperíodo de 12 horas por 7 dias. A maior incidência de fungos isolados pertencem aos gêneros Penicillium sp e Aspergillus sp e dos antagônicos Clonostachys rosea e Trichoderma sp. As colônias identificadas morfologicamente, foram comparadas quantitativamente quanto ao tipo de manejo a que estavam submetidas as plantas de origem. Os fungos C. rosea e Trichoderma sp. foram isolados somente nos quatro solos, em cada uma das três culturas conduzidas com manejo integrado. Penicillium sp e Aspergillus sp apareceram mais frequentemente em solos de todas as culturas, independendo do manejo utilizado.

Summary translation

Soil microscopic fungi population is formed by several species that suffer alterations by many factors. Among these, it is possible to remark both soil management and soil chemical properties used on the establishment of the different cultures. However, it has been less effective when applied in some fruit species like blackberry and raspberry. This work aimed to get isolates of the most frequent soil fungi associated to the cultures of blackberry (Rubus sp.), raspberry (Rubus idaeaus) and blueberry (Vaccinium spp.) at integrated and conventional management, in an Oxisol, located in Vacaria, Southern of Brazil. Soil samples were obtained always in the morning, in four spots and four dates in June 2008 and March 2009. They were diluted until 10-3, placed within Petri dishes (9 cm diameter) containing PDA (potato-dextrose-agar) culture medium and antibiotic. Subsequently, they were submitted to incubation at 25ºC during 12 hours of photoperiod throughout seven days. The highest incidence isolated of fungi belong to the genus Penicillium sp and Aspergillus sp and antagonistic Clonostachys rosea and Trichoderma sp. The colonies identified morphologically were purified and compared quantitatively as for the management method that they had been plants submitted. The fungi Clonostachys rosea and Trichoderma sp. were isolated in four soils, in each of the three cultures conducted on the integrated management, and has not been isolated in soils conducted under conventional. Penicillium sp e Aspergillus sp. appeared constantly in soils of all cultures, regardless of management used.

EPrint Type:Journal paper
Keywords:Fungos de solo, isolamento, pequenos frutos. sul do Brasil. Soil fungi, isolated, smail fruit, southern Brazil.
Agrovoc keywords:
LanguageValueURI
Englishagroecologyhttp://aims.fao.org/aos/agrovoc/c_92381
EnglishSoil fungihttp://aims.fao.org/aos/agrovoc/c_33550
EnglishIsolationhttp://aims.fao.org/aos/agrovoc/c_37744
EnglishRaspberrieshttp://aims.fao.org/aos/agrovoc/c_6458
EnglishBlackberrieshttp://aims.fao.org/aos/agrovoc/c_947
EnglishBlueberrieshttp://aims.fao.org/aos/agrovoc/c_974
Subjects: Crop husbandry > Production systems
Farming Systems
Crop husbandry > Production systems > Fruit and berries
Research affiliation: Brazil > Other organizations
ISSN:1980-9735
Related Links:http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/index
Deposited By: Pinto, Gabriela Franco
ID Code:24151
Deposited On:07 Oct 2013 14:40
Last Modified:07 Oct 2013 14:40
Document Language:Portuguese/Portugues
Status:Published
Refereed:Peer-reviewed and accepted

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