The utilization of the Azolla - Anabaena complex as a nitrogen fertilizer for rice

Watanabe, I. and Espinas , C.R. and Berja, N.S. and Alimagno, B.V. (1977) The utilization of the Azolla - Anabaena complex as a nitrogen fertilizer for rice. Other. International Rice Research Institute, Manila, Philippines.

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Abstract

Because it contains nitrogen fixing blue-green algae Anabaefa azota in its fronds, AzoZla grows on a nitrogen-free solution, doubles its mass in 3 or 5 days, and accumulates 30 or 40 kg of N/ha in 2 weeks. A calcium or phosphorus deficiency in the Azolla culture solution produces severe deterioration on growth. The optimum solution pH for Azolia is 5.5; a higher pH produces iron deficiency. Azolia is sensitive to a temperature higher than 310C (350 day which causes reddish-brown discoloration and reduces vigor...

Item Type:	Monograph (Other)
Author Affiliation:	IRRI, PO Box 933, Manila, Philippines
Subjects:	Plant Production > Farming Systems
Divisions:	Other Crops
Depositing User:	Ms K Syamalamba
Date Deposited:	30 Oct 2012 08:25
Last Modified:	30 Oct 2012 08:25
URI:	http://eprints.icrisat.ac.in/id/eprint/8591

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