Skip to main content
×
Home
    • Aa
    • Aa

Integrated management of Sesbania, Azolla and urea nitrogen in lowland rice under a rice–wheat cropping system

  • B. S. Mahapatra (a1) and G. L. Sharma (a1)
Abstract
SUMMARY

A two-year field experiment on a mollisol at Pantnagar showed that organic sources of N gave generally higher rice yields than the equivalent split dressing of prilled urea (PU). In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU. Yield increases were attributed to significant variations in panicles/m2, filled spikelets/panicle and nitrogen uptake by the crop. These components, and grain yield, were significantly correlated with wet soil NH+4-N, which was increased by organic manuring. Wheat grown after each rice crop showed significant residual effects of the different sources of N applied to rice.

Copyright
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

A. Islam & A. Islam (1973). Chemistry of submerged soils and growth and yield of rice. I. Benefits from submergence. Plant and Soil 39, 555565.

M. L. Jackson (1973). Soil Chemical Analysis. New Delhi: Prentice Hall of India.

P. K. Singh , B. C. Panigrahi & K. B. Satapathy (1981). Comparative efficiency of Azolla, blue-green algae and other organic manures in relation to N and P availability of flooded rice soil. Plant and Soil 62, 3544.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

The Journal of Agricultural Science
  • ISSN: 0021-8596
  • EISSN: 1469-5146
  • URL: /core/journals/journal-of-agricultural-science
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 3 *
Loading metrics...

Abstract views

Total abstract views: 80 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 27th May 2017. This data will be updated every 24 hours.