Effect of organic sources and fertilizer  levels on morphophysiological characters  of flag leaf in hybrid rice (Oryza sativa L.)

C. Subha Lakshmi; A. Pratap Kumar Reddy

Volume : III, Issue : I, January - 2014

Effect of organic sources and fertilizer levels on morphophysiological characters of flag leaf in hybrid rice (Oryza sativa L.)

C. Subha Lakshmi, A. Pratap Kumar Reddy

Abstract :

Field experiment was conducted during kharif 2009 and 2010 College Farm, College of Agriculture, Rajendranagar, Hyderabad to study the effect of organic sources and fertilizer levels on the flag leaf characteristics of hyid rice. The experiment was laid 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:K2 O 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 flag leaf length, flag leaf angle and chlorophyll content of flag leaf. Fertilizer level comprising 200:50 N:K2 O kg ha-1 was the best among the fertilizer level tested during both the years of study. Interaction effect was found significant on flag leaf length and flag leaf angle. Subabul incorporation @ 5 t ha-1 + 200:50 N:K2 O kg ha-1 recorded the highest flag leaf length and flag leaf angle and was comparable to subabul incorporation @ 5 t ha-1 + 200:25 N:K2 O kg ha-1 in both the years of study.