Journal of Environmental Biology

     Impact of combined exposure of chemical, fertilizer, bio-fertilizer and compost on growth, physiology and productivity of Brassica campestries in old alluvial soil

 

J.K. Datta*¹, A. Banerjee¹, M. Saha Sikdar¹, S. Gupta¹ and N.K. Mondal²

¹Department of Environmental Science, ²Institute of Science Education, The University of Burdwan, Burdwan - 713 104, India

(Received: May 29, 2008; Revised received: September 20, 2008; Re-revised received: December 18, 2008; Accepted: January 27, 2009)

 

Abstract: Field experiment was carried out during November 2006 to February 2007 under old alluvial soil to evaluate the impact of combined dose of chemical fertilizer, biofertilizer in combination with compost  for the yellow sarson  (Brassica campestries cv.B₉ ) in a randomized block design replicated thrice. Various morpho-physiological parameters viz., plant population, length of shoot and root, leaf area index (LAI) , crop growth rate  (CGR ), net assimilation rate (NAR) , yield attributes viz., number of siliquae per plant, number of seeds / siliquae, 1000 seed weight (test weight ), seed yield , stover  yield and physiological and biochemical parameters viz., pigment content, sugar, amino acid, protein, ascorbic acid content in physiologically active leaf were performed. The treatment T₁ i.e., 40% less N fertilizer, 25% less P fertilizer, K fertilizer constant + 12 kg ha^-1 biofertilizer (Azophos) and organic manure (compost) @ 5Mt ha^-1, showed the maximum chlorophyll accumulation (10.231 mg g^-1 freshweight), highest seed /siliquae (25.143), test weight of seeds (4.861g) and highest seed yield (10.661 tha^-1).  A comparison between all the morphological, anatomical, physiological and biochemical parameters due to application of chemical fertilizer, bio-fertilizer and compost alone and in combination and their impact on soil microorganism, flora and fauna will throw a sound environmental information.

Key words: Yellow sarson, Brassica campestries, Yield attributes, Morphophysiological parameters

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