Indian Journal of Microbiology

, Volume 51, Issue 3, pp 384–389

Response of Arbuscular Mycorrhizal Fungi on Wheat (Triticum aestivum L.) Grown Conventionally and on Beds in a Sandy Loam Soil

  • Mahaveer P. Sharma
  • Ubbara Gangi Reddy
  • Alok Adholeya
Original Article

DOI: 10.1007/s12088-011-0134-1

Cite this article as:
Sharma, M.P., Reddy, U.G. & Adholeya, A. Indian J Microbiol (2011) 51: 384. doi:10.1007/s12088-011-0134-1

Abstract

The present study was undertaken to assess the benefit and compare the functioning of AM fungi on wheat grown conventionally and on beds. Ten treatment combinations were used, treatments 1 and 2: no fertilizers with and without arbuscular mycorrhizal (AM) fungi (In vitro produced Glomus intraradices); 3:100% of recommended NPK: (120 kg ha−1 N; 60 kg ha−1 P; 50 kg ha−1 K), and 4 and 5: 75% of recommended NPK dose with and without AM inoculation in a 5 × 2 split-plot design on wheat using conventional/flat system and elevated/raised bed system. The maximum grain yield (3.84 t ha−1) was obtained in AM fungi inoculated plots of raised bed system applied with 75% NPK and was found higher (although non- significant) than the conventional (3.73 t ha−1) system. The AM inoculation at 75% fertilizer application can save 8.47, 5.38 kg P and 16.95, 10.75 kg N ha−1, respectively, in bed and conventional system. While comparing the yield response with 100% fertilizer application alone, AM inoculation was found to save 20.30, 15.79 kg P and 40.60, 31.59 kg N ha−1, respectively, in beds and conventional system. Mycorrhizal inoculation at 75% NPK application particularly in raised bed system seems to be more efficient in saving fertilizer inputs and utilizing P for producing higher yield and growth unlike non-mycorrhizal plants of 100% P. Besides the yield, mycorrhizal plants grown on beds had higher AM root colonization, soil dehydrogenases activity, and P-uptake. The present study indicates that the inoculation of AM fungi to wheat under raised beds is better response (although non-significantly higher) to conventional system and could be adopted for achieving higher yield of wheat at reduced fertilizer inputs after field validation.

Keywords

Arbuscular mycorrhizaCultivation systemsTriticum aestivumField response

Copyright information

© Association of Microbiologists of India 2011

Authors and Affiliations

  • Mahaveer P. Sharma
    • 1
    • 2
  • Ubbara Gangi Reddy
    • 1
    • 3
  • Alok Adholeya
    • 1
  1. 1.Centre for Mycorrhizal ResearchThe Energy and Resources Institute (TERI)New DelhiIndia
  2. 2.Microbiology SectionDirectorate of Soybean Research (DSR, Indore-ICAR)IndoreIndia
  3. 3.Department of ChemistryUniversity of WarwickCoventryUK