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Journal of Plant Protection Research

The Journal of Polish Society of Plant Protection, Committee of Plant Protection; Polish Academy of Sciences, Institute of Plant Protection – National Research Institute

4 Issues per year

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Mycoflora Associated with Decomposition of Rice Stubble Mixed with Soil

Vibha Pandey1 / Asha Sinha1

Department of Plant Pathology, Rajendra Agricultural University, Pusa (Samastipur) Bihar - 848125, India1

Department of Mycology & Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, India2

This content is open access.

Citation Information: Journal of Plant Protection Research. Volume 48, Issue 2, Pages 247–254, ISSN (Online) 1899-007X, ISSN (Print) 1427-4345, DOI: 10.2478/v10045-008-0028-3, August 2008

Publication History

Published Online:
2008-08-14

Mycoflora Associated with Decomposition of Rice Stubble Mixed with Soil

Fungi inhabiting rice stubble mixed with soil were isolated by dilution plate technique. Moisture content of decomposed rice stubble mixed with soil was 25.32% in the month of August and minimum (5.35%) in the month of April and pH varied between 6.8-7.2. The highest (47.68 x 104) fungal population in 1 g of rice stubble mixed with soil was recorded in the month of October and the lowest (16.88 x 104) in the month of May. A total of twenty-nine fungal species were recorded during the entire period of decomposition. Dueteromycetous fungi constituted 75.86 per cent of total fungal population followed by zygomycetous, oomycetous and ascomycetous fungi. Monthly variation in fungal population was correlated with substrate availability and climatic factors. Dominance of Rhizopus stolonifer, Aspergillus flavus and Trichoderma harzianum was recorded during the decomposition while Pestalotia mangiferae, Torula graminis and Alternaria solani were obtained as rare fungal species.

Mikoflora Związana Z Rozkładem ścierni Ryżu Zmieszanej Z Ziemią

W artykule przedstawiono wyniki izolacji grzybów ze ścierni ryżu zmieszanej z ziemią wykonanych metodą rozcieńczeń płytkowych. Zawartość wilgoci w rozłożonej ścierni wynosiła 25,32% w sierpniu, natomiast minimalną wilgotność tego substratu wynoszącą 5,25% stwierdzono w kwietniu, a pH wahała się w granicach 6,8-7,2. Najwyższą liczebność populacji grzybów (47,68 x 104) w 1 g ścierni zmieszanej z ziemią stwierdzono w październiku, a najniższą (16,88 x 104) w maju. W czasie całego okresu rozkładu ścierni ryżu wykryto 29 gatunków grzybów. Grzyby zaliczone do Deuteromycotina stanowiły 75,86% całości populacji, natomiast grzyby zaliczone do Zygomycotina, Mastigomycotina i Ascomycotina występowały w odpowiednio zmniejszającym się procencie. Miesięczna zmienność liczebności populacji grzybów była skorelowana z dostępnością substratu oraz z czynnikami klimatycznymi. W toku procesu rozkładu ścierni stwierdzono dominację Rhizopus stolonifer, Aspergillus flavus i Trichoderma harzianum, natomiast grzyby Pestalotia mangiferae, Torula grminis i Alternaria solani były grzybami izolowanymi rzadko.

Keywords: decomposition; environmental conditions; rice stubble; succession

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