Paper Information

Title: 

INTEGRATED WEED MANAGEMENT IN CORN USING HERBICIDE, CULTIVATION AND VARIETY

Type: PAPER
Author(s): NEJAT JAVAD,AMIRI HAMID REZA,MOHAJERI F.
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

IN ORDER TO REDUCE HERBICIDE USE AND EFFICIENT WEED CONTROL IN CORN AN EXPERIMENT WAS CONDUCTED IN 2008 IN FARS PROVINCE IN IRAN. THE EFFECT OF DIFFERENT CONCENTRATION OF PRE-EMERGENCE HERBICIDE ACETOCHLORE AND TIMES OF CULTIVATION IN TWO CORN CULTIVARS (EARLY AND LATE MATURITY) WAS EVALUATED. THE EXPERIMENT WAS CONDUCTED IN A FACTORIAL WITH COMPLETE RANDOMIZED BLOCKS DESIGN USING FOUR REPLICATIONS. TREATMENTS CONSISTED OF THREE LEVELS OF ACETOCHLORE (0, 1.5 AND 3 L HA-1) AND TIMES OF CULTIVATION (WITHOUT CULTIVATOR, ONCE AND TWICE CULTIVATOR) IN 4TH AND 10TH LEAF STAGES. THE RESULTS SHOWED THAT TWO CORN CULTIVARS SHOWED DIFFERENT RESPONSES TO TREATMENTS. THE HIGHEST GRAIN YIELD (11.1 T HA-1) AND SEED NUMBER PER EAR WAS OBTAINED IN CV.704 USING 3 L HA-1 HERBICIDE AND ONCE CULTIVATION. ALSO, HIGHEST DRY MATTER IN TWO CV. OF 704 AND MAXIMA WAS OBTAINED IN NO HERBICIDE AND NON-CULTIVATION. CULTIVATION AND HERBICIDE TREATMENTS SIGNIFICANTLY REDUCED DRY MATTER OF DOMINANT WEEDS SPECIES (AMARANTHUS RETROFLEX US, PHYSALIS SP., ECHINOCLOA CRUSGALLI, AND ABUTHILON THEOPHRASTI). IN CONCLUSION CV. 704 HAD MORE COMPETITIVENESS AGAINST WEEDS AND ONCE CULTIVATION DECREASE HERBICIDE USAGE (3 L HA-1) AND INCREASE GRAIN YIELD OF CORN.

 
Keyword(s): COMPETITIVENESS, CORN, CULTIVATION, HERBICIDE, WEED CONTROL
 
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