Paper Information

Title: 

EFFECT OF COMMON COCKLEBUR (XANTHIUM STRUMARIUM L.) OR JIMSONWEED (DATURA STRAMONIUM L.) ON CORN (ZEA MAYS L.) YIELD AND YIELD COMPONENTS

Type: PAPER
Author(s): KARIMMOJENI H.,RAHIMIYAN MASHADI H.,ALIZADEH H.M.
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

THE EFFECT OF X. STRUMARIUM OR D. STRAMONIUM ON CORN WERE COMPARED IN A FIELD STUDY CONDUCTED OVER TWO YEARS IN IRAN. RELATIONSHIPS WERE DERIVED BETWEEN WEEDS, CROP YIELD, AND OTHER CROP PARAMETERS, AND WEED DENSITY. ALL YIELD PARAMETERS WERE AFFECTED MORE BY X. STRUMARIUM THAN BY D. STRAMONIUM. COMPETITION FROM THE WEEDS AFFECTED CROP YIELD, SEED NUMBER EAR-1 AND SEED WEIGHT BUT NOT EAR NUMBER PLANT-1. A LARGE PORTION OF THE CORN YIELD LOSS AS INFLUENCED BY X. STRUMARIUM COULD BE EXPLAINED BY A REDUCTION IN SEED NUMBER EAR-1, WHEREAS A GREATER PORTION OF THE CORN YIELD LOSS AS AFFECTED BY D. STRAMONIUM WAS EXPLAINED BY A REDUCTION IN SEED WEIGHT DUE TO A SURGE IN D. STRAMONIUM GROWTH LATE IN THE SEASON. WEED BIOMASS PRODUCTION WAS GREATER FOR X. STRUMARIUM THAN FOR D. STRAMONIUM, WHEREAS SEED PRODUCTION WAS FAR HIGHER FOR D. STRAMONIUM. IT IS CONCLUDED THAT IN A CORN FIELD, ALTHOUGH X. STRUMARIUM SHOULD HAVE A PRIORITY FOR CONTROL IN THE CURRENT CROP, CONTROL OF D. STRAMONIUM IS ALSO ESSENTIAL BECAUSE OF BOTH ITS EFFECT ON YIELD AND LARGE AFFECTS RESULTING FROM SUBSEQUENT INFESTATIONS.

 
Keyword(s): MODEL, BIOMASS
 
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