Variation of Soil Mycoflora in Decomposition of Rice Stubble from Rice-wheat Cropping System

Abstract

The colonization pattern and extent of decay produced in paddy stubble by soil inhabiting mycoflora were done by using nylon net bag technique. Among the three methods used for isolation of fungi, dilution plate technique recorded the highest number of fungi followed by damp chamber and direct observation method. Nutrient availability and climatic conditions (temperature, humidity and rainfall) influenced the occurrence and colonization pattern of fungi. Maximum fungal population was recorded in October (48.99 × 104/g dry litter) and minimum in May (11.41 × 104/g dry litter). Distribution of Deuteromycetous fungi was more in comparison to Zygomycetes, oomycetes and ascomycetes. In the early stage of decomposition Mucor racemosus, Rhizopus nigricans, Chaetomium globosum and Gliocladium species were found primarly whereas at later stages of decomposition preponderance of Aspergillus candidus, Torula graminis, Cladosporiun cladosporioides and Aspergillus luchuensis was recorded.

Abundance, frequency and occurrence based comparison between mycoflora involved in the decomposition of Sesbania aculeata L. under experimental and natural conditions

“…--1 1 --1 1 ----------------Rhizopus stolonifer 2 4 3 4 3 2 ------5 4 4 3 ----1 1 1 1 [6] and Vibha and Sinha (2007) [35] . The dominance and predominance of Aspergillus spp., Penicillium citrinum, Fusarium spp, Trichoderma spp.…”

Development of a Liquid Formulation of Lignolytic Fungi for Increased Shelf Life

“…Rice stubble constitutes part of the root system and just above the ground portion and is highly rich in cellulose and lignin. It is incorporated into the soil during field preparation and allowed to decompose (Vibha and Sinha, 2007), but it has very high lignin and cellulose content, particularly the roots. Lignin constitutes a relatively stable component of soil organic matter because of its recalcitrant chemical structure and its resistance to microbial degradation.…”