Abstract The Azolla-Anabaena symbiosis is outstanding due to its high productivity
combined with its ability to fix nitrogen at high rates. Because of this, in recent decades …

Floodwater and the surface of soil provide the sites for aerobic phototrophic nitrogen (N)
fixation by free-living cyanobacteria and the Azolla-Anabaena symbiotic N 2-fixing complex …

Soybean (Glycine max L.)–wheat (Triticum aestivum L.) rotation is one of the profitable
cropping systems under rainfed conditions in the sub-temperate agro-ecosystem of the …

Rice–wheat rotations, practised in 12.5 million ha in Indo-Gangetic Plain region (IGPR), are
the most important production system for food security of south Asian countries. Recent …

Rice is the most important cereal crop. In the next three decades, the world will need to
produce about 60% more rice than today's global production to feed the extra billion people …

Rice-wheat rotations are the most important cropping system of the Indo-Gangetic plains.
We measured the long-term sustainability of the system for green manuring and chemical …

This review addresses the perspectives of Azolla as a multifaceted aquatic resource to
ensure ecosystem sustainability. Nitrogen fixing potential of cyanobacterial symbiont varies …

Publisher Summary This chapter reviews nitrogen (N) dynamics in lowland rice fields with
emphasis on how N dynamics are influenced by typical soil drying and wetting cycles, the …

Publisher Summary This chapter reviews some new research in green manuring of wetland
rice. It discusses the agronomic advantages of applying green manures to wetland rice as a …

The concept of using aquatic plant for different purposes is receiving special attention
nowadays. Because of its growth habitat, high multiplication rate, excellent source of protein …