Biology and Medicine

Soil-microbe rhizosphere processes vis-a-vis nitrogen availability in soil

2^nd World Congress on Beneficial Microbes: Food, Pharma, Aqua & Beverages Industry

September 22-24, 2016 Phoenix, USA

D D Patra

CSIR-Central Institute of Medicinal and Aromatic Plants, India

Posters & Accepted Abstracts: Biol Med (Aligarh)

Abstract:

Policy-driven nitrogen (N) assessments are demonstrating the need for new approaches to N management in agroecosystems, mainly owing to the offsite effects of fertilizers and manure. Lot of works has been reported on use of fertilizer and organic matter management to increase nutrient cycling. However, less emphasis has been placed on management to enhance ecological processes in the root zone to cycle and retain N within agroecosystems. Close interactions between roots and free-living microbes regulate much of the N cycle. Plants communicate with their most immediate environment, the rhizosphere, through root exudation of a diverse array of C-rich compounds. Different plant species can increase biogeochemical cycling and N availability in the rhizosphere in different ways, but this has been little exploited in agriculture. To consistently supply and retain N, future farming strategies should aim to provide the soil ecosystem with sufficient resources to support N cycling. Multi-scale research will help explain the processes by which such management options are effective. It is likely that intensification of these processes (i.e. ecological intensification) will require site-specific and commodity-specific interventions. There will not be a �??one size fits all�?? approach for increasing N cycling and retention, and thus innovation in both the research and agricultural sectors is needed to provide new options. This paper focuses on how understanding the complexity of rootmicrobial- soil food web N interactions could increase options for ecologically based interventions to improve N availability and retention in agriculture.

Biography :

Email: ddpatra@rediffmail.com ddpatra_cimap@yahoo.com