Titlebook: Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Ag; Extended versions of J. K. Ladha,M. B

彩色的蜡笔

Role of legumes in providing N for sustainable tropical pasture systems,tems. However despite the benefits they bring in terms of increased herbage and animal production they are not widely used in temperate or tropical regions. In this review the amounts of biological nitrogen fixation (BNF) needed to sustain the soil-plant-animal system are discussed and related to th

Arroyo

Management of biological N2 fixation in alley cropping systems: Estimation and contribution to N baing the resource base. Fast growth and N yield of most trees used as hedgerows in alley cropping is due greatly to their ability to fix N. symbiotically with .. Measurements of biological N. fixation (BNF) in alley cropping systems show that some tree species such as . and . can derive between 100 a

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cuticle

Green manure technology: Potential, usage, and limitations. A case study for lowland rice,proving legumes. It is timely to assess the future role that soil-improving legumes may play in agricultural systems. This paper reviews recent progress, potential, and limitations of green manure technology, using lowland rice cropping systems as the example..Only a few legume species are currently

Insulin

Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for iver 60% of their nitrogen (>150 kg N ha. year.) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and

提炼

Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw,arge amounts of carbon (cellulose and hemicellulose) which can serve as substrates for the production of microbial biomass and for biological N. fixation by a range of free-living, diazotroph-ic bacteria. Microorganisms with the dual ability to utilise cellulose and fix N. are rare, but some strains

颂扬本人

Potential and pitfalls of trying to extend symbiotic interactions of nitrogen-fixing organisms to pants, such as rice. A number of researchers have recently described the induction of “nodule-like” structures on the roots of cereals primarily by rhizobia, in either the presence or absence of plant cell-wall-degrading enzymes or plant hormones. We briefly review this research and discuss the poten

冰雹

New techniques for studying competition by Rhizobia and for assessing nitrogen fixation in the fieless of individual isolates in competing for nodule occupancy with different cultivars of legumes and in different soil and agronomic conditions. The use of marker genes enables individual rhizobial strains to be identified by a simple colour assay, thus enabling a dramatic increase in throughput of

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dapper

Research evaluation and impact analysis of biological nitrogen fixation,nology in tropical regions. Reasons contributing to this include inadequate demonstration of the technology, presence of adequate native rhizobia, high soil mineral nitrogen levels which suppress nitrogen fixation, inadequate quality control of . inoculum and difficulties of inoculating under tropic