Paper Information

Title:  EFFECT OF WILD OAT (AVENA FATUA L.) COMPETITION ON NITROGEN USE AND ABSORB EFFICIENCY OF WHEAT
Type: PAPER
Author(s): CHAMANI TOKTAM,MAHMOODI SOHRAB,RASHED MOHASSEL MOHAMMAD HASAN,ZAMANI GHOLAM REZA
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

IN ORDER TO STUDY THE EFFECTS OF COMPETITION OF WILD OAT (AVENA FATUA L.) WITH WHEAT ON NITROGEN USE AND ABSORB EFFICIENCY, A FACTORIAL EXPERIMENT WAS CONDUCTED BASED ON COMPLETELY RANDOMIZED BLOCK DESIGN WITH THREE REPLICATIONS IN RESEARCH GREENHOUSE OF FACULTY OF AGRICULTURE, AT FERDOWSI UNIVERSITY OF MASHHAD IN 2008. THE FIRST FACTOR WAS COMPETITION BETWEEN WILD OAT (WITH DENSITIES OF 0, 2, 4, 6 AND 8 PLANTS PER POT) AND WHEAT (WITH 8 PLANTS PER POT) AND THE SECOND FACTOR WAS FIVE DIFFERENT LEVELS OF NITROGEN (1, 4, 8, 12 AND 16 MM). THE EXPERIMENT WAS FINISHED AT THE END OF VEGETATIVE GROWTH STAGE OF WHEAT BASED ON MONOCULTURE TREATMENT AT 8 MM OF NITROGEN LEVEL. RESULTS INDICATED THAT INCREASE OF NITROGEN LEVEL JUST TO 8 MM CAUSED THE NITROGEN CONTENT OF SHOOT BE INCREASED UNTIL AN ASYMPTOTIC LEVEL IN WHEAT. NITROGEN ABSORBANCE AND USE EFFICIENCY OF WHEAT DECREASED WHEN NITROGEN SUPPLY INCREASED IN ALL WEED DENSITIES. NITROGEN ABSORBANCE AND USE EFFICIENCY OF SHOOT IN WHEAT HAD EXTREME AMOUNT IN 4 MM NITROGEN OF EACH DENSITY.

 
Keyword(s): WEED DENSITY, NITROGEN ABSORBANCE EFFICIENCY, NITROGEN USE EFFICIENCY
 
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