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Paper Information

Title: 

EFFECT OF NITROGEN ON CANOLA YIELD AND YIELD COMPONENT UNDER WILD OAT DENSITIES

Type: PAPER
Author(s): KARIMI H.,KAZEMEINI S.A.,GHADIRI H.,HAMIDI R.
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

IN ORDER TO EVALUATE THE EFFECT OF NITROGEN ON CANOLA (BASSICA NAPUS L.) YIELD AND YIELD COMPONENT UNDER WILD OAT (AVENA FATUA L.) DENSITIES, AN EXPERIMENT WAS CONDUCTED AT THE RESEARCH STATION OF THE COLLAGE OF AGRICULTURE, SHIRAZ UNIVERSITY AT BADJGAH IN 2009. THE EXPERIMENTAL DESIGN WAS SPLIT PLAT IN A RANDOMIZED COMPLETE BLOCK WITH THREE REPLICATIONS. NITROGEN RATES (0, 50, 100, 150 KG NITROGEN PER HECTARE) WERE ARRANGED AS MAIN FACTORS, AND WEED DENSITY IN FOUR LEVELS (0, 15, 30, 45 PLANT PER SQUARE METER) AS SUB PLOT. RESULT INDICATED THAT THE MAXIMUM SEED YIELD (1640 KG /HA) WAS OBTAINED IN 150 KG N HA-1 AND WEED FREE AND MINIMUM SEED YIELD (303 KG/HA) WAS OBTAINED IN 0 KG NITROGEN AND 45 PLANT M-2 WILD OAT. AMONG OF YIELD COMPONENTS, NUMBER OF POD PER PLANT AND NUMBER OF GRAIN PER POD, SIGNIFICANTLY DECREASED. COMPARED TO WEED FREE, WITH INCREASING WILD OAT SIGNIFICANTLY DECREASED (1.2%, 24.57% AND 12.1%), RESPECTIVELY. IN FACT, THE REDUCTION IN CANOLA YIELD WAS MORE UNDER THE INFLUENCE OF WEED DENSITY AS COMPARED TO THE NITROGEN.

 
Keyword(s): SEED YIELD, CANOLA, NITROGEN, WEED DENSITY
 
 
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