Vol. 5 (1) : January-February 2014 issue
Green Farming Vol. 5 (1) : 86-88 (January-February, 2014)
Growth analysis of hybrid rice (Oryza sativa L.) as influenced by organic sources and fertilizer levels
C. SUBHA LAKSHMI1* and A. PRATAP KUMAR REDDY2
Deptt. of Agronomy, College of Agriculture, A.N.G.R. Agric. University, Rajendranagar, Hyderabad - 500 030 (A.P.)
Designation : 1Ph.D. Scholar *(subhanairdr@gmail.com), 2Principal Scientist & Co-ordinator
Subject : Agronomy and Crop Production
Paper No. : P-1008
Total Pages : 3
Received : 30 June 2013
Revised accepted : 16 January 2014
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Citation :
C. SUBHA LAKSHMI and A. PRATAP KUMAR REDDY. 2014. Growth analysis of hybrid rice (Oryza sativa L.) as influenced by organic sources and fertilizer levels. Green Farming Vol. 5 (1) : 86-88 (January-February, 2014)
ABSTRACT
A two year field study was conducted to evaluate the growth behaviour of hybrid rice under different organic sources and fertilizer levels. The experiment was laid out in split plot design with three replications. The treatments included organic sources (control - no organic manuring, subabul incorporation @ 5 t ha-1, rice straw incorporation @ 2.5 t ha-1) as main plot treatments and fertilizer levels comprising of N:K2O kg ha-1 (150:75, 175:50, 175:25, 200:50, 200:25, 225:0) as sub-plot treatments. The results revealed that among the organic sources, incorporation of subabul @ 5 t ha-1 recorded the highest values of CGR, NAR and LAD at all stages of crop growth. Fertilizer level comprising of 200:50 N:K2O kg ha-1 was the best among the fertilizer levels tested during both the years of study.
Key words :
Crop growth rate, Fertilizer levels, Leaf area duration, Net assimilation rate, Organic sources, Rice.
