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Paper Information

Title: 

EFFECT OF NITROGEN ON VEGETATIVE GROWTH PARAMETERS OF WHEAT IN COMPETITION WITH WILD OAT (AVENA FATUA L.)

Type: PAPER
Author(s): CHAMANI TOKTAM,MAHMOODI SOHRAB,RASHED MOHASSEL MOHAMMAD HASAN,ZAMANI GHOLAMREZA
 
 
 
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 EFFECT OF NITROGEN ON VEGETATIVE GROWTH PARAMETERS OF WHEAT WHEN COMPETING WITH WILD OAT (AVENA FATUA L.), AN EXPRIMENT CONDUCTED IN A FACTORIAL BASED ON COMPLETELY RANDOMIZED BLOCK DESIGN WITH THREE REPLICATIONS IN RESEARCH GREENHOUSE OF FACULTY OF AGRICULTURE, UNIVERSITY OF FERDOWSI IN 2008. FIRST FACTOR CONSISTED OF COMPETITION BETWEEN WILD OAT AT (0, 2, 4, 6 AND 8) DENSITIES PLANT PER POT AND WHEAT (WITH 8 PLANT POT) WITH ITS MONOCULTURE TREATMENT. AND SECOND FACTOR CONSISTED OF FIVE DIFFERENT LEVELS OF NITROGEN (1, 4, 8, 12 AND 16 MM). THE EXPRIMENT FINISHED IN THE END OF VEGETATIVE STAGE OF GROWTH OF WHEAT (BASED ON MONOCULTURE TREATMENT AT 8 MM OF NITROGEN). INVESTIGATION ON MAIN EFFECTS OF EXPERIMENTAL FACTORS DEMONSTRATED SIGNIFICANT INCREASE IN NUMBER OF TILLER, LEAF AREA INDEX AND DRY WEIGHT OF SHOOT IN WHEAT WHEN NITROGEN LEVEL INCREASED AND WILD OAT DENSITY DECREASED. BUT BECAUSE OF THEIR SIGNIFICANT INTERACTION EFFECTS, INCREASE OF NITROGEN IN HIGH LEVELS OF WEED DENSITY AND ALSO INCREASE OF WEED DENSITIES IN LOW LEVELS OF NITROGEN AVAILABILITY HAD NO SIGNIFICANT EFFECT ON WHEAT LEAF AREA INDEX AND SHOOT DRY WEIGHT.

 
Keyword(s): DENSITY, WEED, COMPETITION, NITROGEN
 
 
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