Response of BGA-Urea Fertigation as N2 Source on Growth Parameters and Yield of Paddy (Oryza sativa L.) in Agra (India)

Paddy being cultivated since about 10,000 years B.C in Ganga Valley in India, its production reached up to 99 million tons in the year 2012. BGA are of much ecological importance for maintaining the soil fertility and reclaiming the alkalinity. In present investigation attempts were made to identify the local cyanobacterial genera from the paddy fields, BGA application for green farming enabling the paddy to utilize more amount of nitrogen released and to examine its impact along with Urea upon growth and yield responses of the Paddy crop. It was observed that combined treatment of BGA with Urea proved better response in almost all growth parameters and yield attributes except number of tillers/ Plant and grains/ panicle as compared to application of either Urea or BGA alone. The Paddy growers should be encouraged to adopt BGA along with Urea as source of Nitrogen for Paddy cultivation.

• Guru Prasad Satsangi
• Sanjay Yadav

• BGA/Urea fertigation
• Response
• Paddy.

<p>[1] R. S. Aiyer, , S. Shlahuddin, And G. S. Venkataraman, (1972). Long
Term Algalization Field Trails With High Yielding Rice Varieties: Yield
And Economics. J. Agric. Sci., 42, 382.
[2] M. Chung, K.. H. Kim, J. K. Ahn,, H.J. Ju, (1997). Allellopathic
Potential Evaluation Of Rice Cultivars On Echinochloa Crus-Galli.
Korean Weed Sci., 17, 52-58.
[3] S.K.,De Datta.,R.J. Buresh, (1989). Integrated Nitrogen Management In
Irrigated Rice. Adv. Soil Sci., 10: 143-169.
[4] T.V. Desikachary, (1959), Cyanophyta, Indian Council Of Agricultural
Research, New Delhi, India.
[5] B. S. Dwivedi, A. K. Shukla, V. K. Singh, R. L. Yadav,
(2003),Improving Nitrogen And Phosphorus Use Efficiencies Through
Inclusion Of Forage Cowpea In The Rice– Wheat System In The Indo
Gangetic Plains Of India, Field Crops Res., 84, Pp. 399–418.
[6] M. L. Jackson,( 1973) Soil Chemical Analysis, Prentice Hall Of India
Pvt. Ltd., New Delhi., India.
[7] R. Prasanna And S. Nayak. (2007),Influence Of Diverse Rice Soil
Ecologies On Cyanobacterial Diversity And Abundance, Wetlands Ecol
Manage, 15, Pp. 127– 134.
[8] R.S. Paroda, T. Woodhead, R.B. Singh,( 1994). Sustainability Of Rice-
Wheat Production System In Asia, Vol. Ii. Rapa Publication, Bangkok,
Thailand.
[9] P.A.Roger, S.A. Kulasooriya, (1980). Blue Green Algae And Rice. The
Irri, Los Banos, Philippines, Pp. 112.
[10] C. Shukla, (1971). Systematic Descriptions Of Algae From The Rice
Fields, Kanpur, India. Rev. Algal, 10, 257–270.
[11] R. Y. Stanier, R. Kunisawa, M. Mandel, Cohen Bazire, G.,( 1971).
Purification And Properties Of Unicellular Blue Green Algae (Order
Chroococales), Bacteriol Rev., 35, Pp. 171-205.
[12] G. L. Tiwari, And R. S. Pandey. (1976). A Study Of The Bga From
Paddy Field Soils Of India Iii. Nostacaceae. Nova Hedwigia, 27, 701–
730
[13] G.P.Satsangi,V.P.Bhatnagar And J,N. Shrivastava(2002) Effect Of
Bga/Urea As Nitrogen Application On Growth And Yield Responses Of
Paddy(Oryza Sativa) In Agra District J.Liv.World Vol9 No.1 Pp5-13
[14] G.S.Venkatraman(1975)The Role Of Blue Green Algae In Tropical Rice
Cultivation.In Nitrogen Fixation By Free Living Microorganisns(Ed.
Stevart,W.D.P.) Cambridge University Press, Cambridge, U.K.,Pp.701-
730.</p>