Written in English
|Statement||by Jerry Eugene Park.|
|The Physical Object|
|Pagination||, 58 leaves, bound :|
|Number of Pages||58|
SOIL AND RUMEN MICROBIAL RESPONSES TO PHOTOOXIDIZED GRASS STRAW INTRODUCTION Straw has many uses, but none are extensive enough to utilize all the straw produced annually in the United States. Currently, in areas where grass seed is produced, the post-harvest straw residues are burned in the field to help prevent crop disease the following year. Phospholipid fatty acid (PLFA) method was used to characterize soil microbial community abundance and structure. The abundances of total PLFAs and PLFAs of bacteria, fungi, actinomycetes, and arbuscular mycorrhizal fungi were significantly increased in the forage grass field but not in the sugarcane and mulberry fields relative to the maize–soybean by: 5. In addition, microbial substrate utilization patterns and the profiles of microbial phospholipid fatty acids (PLFAs) showed that warming caused a shift in the soil microbial community structure in unclipped subplots, leading to the relative dominance of fungi as evidenced by the increased ratio of Cited by: plant and soil microbial responses to nutrient additions are needed to inform understanding of how the structure and functional at-tributes of soil microbial communities shift in response to anthro-pogenic inputs of N and P and whether these shifts are consistent across sites. Soil microbial communities are often sensitive to nutrient by:
It is hypothesized that (i) soils with long-term fertilization can increase straw decomposition compared with soils without fertilization, and the increase would be greater in the straw return soil than the chemical fertilization soil, (ii) soil microbial fractions with distinct functions would respond differently to straw addition and incubation time, and (iii) the microbial biomass rather than the richness and diversity regulates the straw decomposition in different by: 4. The rumen environment study was a Latin square arrangement with four different diets: rice straw (RS), rice straw and molasses-urea cake (MUC), rice straw, MUC and grass (% body weight), and. These amino acids come from the forage protein that escapes microbial degradation in the rumen and from the rumen microbes that flow from the rumen into the small intestine. Microbial protein is synthesized from the protein and nonprotein nitrogen and sulfur present in the forage. The systematic exploration of microbial ecosystem of the rumen was commenced by the father of rumen microbiology, Robert Hungate, in s. His contributions toward the development of anaerobic.
The microbiology of soil and of nutrient cycling Soil is a dynamic habitat for an enormous variety of gives a mechanical support to plants from which they extract shelters many animal types, from invertebrates such as worms and insects up to mammals like rabbits, moles, foxes and badgers. It also provides habitatsFile Size: KB. Rumen VFA concentration was also increased percent ( vs mM/litre) in sheep fed diets based on the high pressure steamed wheat straw, compared to untreated straw. In lamb feeding trials (Hou Guizhi et al., ), animals were fed equal amounts of mixed concentrate and wheat straw per day per animal ( g dry weight). between soil microbial activity and soil properties. The microbial measurements inCluded the management, history and original soil properties. Microbial responses to such processes:which have not been fully documented, may provide basic information for selected from mowed orchard grass swards which predominate in this region, and the. bial P in bulk soil, while highly variable, is estimated to typically account for around 2% to 10% of total soil P, although at different stages of soil development and within litter layers (soil surface) this may be as much as 50% (Oberson and Joner, ; Achat et al., ). Importantly, microbial Cited by: