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Paper Information

Title: 

INTERACTION EFFECTS OF WEEDS, SOWING RATE AND N SPLITTING ON DRYLAND WHEAT (TRITICUM AESTIVUM L.) YIELD

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

TO ASSESS THE INTERACTION EFFECTS TO WEEDS, SOWING RATE AND N SPLITTING ON DRY LAND WHEAT YIELD, FIELD EXPERIMENTS WERE CONDUCTED IN 2007-2008 AT THE COLLEGE OF AGRICULTURE IN SHIRAZ UNIVERSITY. THE TREATMENTS WERE REPLICATED FOUR TIMES AND ANALYZED AS A SPLIT- SPLIT PLOT IN A RANDOMIZED COMPLETE BLOCK. THE WEEDY AND WEED FREE WERE TREATED AS THE MAIN PLOTS, THE WHEAT SOWING RATES TREATED AS THE SUB PLOTS AND N SPLITTING AS THE SUB- SUB PLOTS. RESULTS SHOWED THAT BY INTERACTION BETWEEN WEEDS AND SOWING RATES, THE HIGHEST GRAIN YIELD (329.9 KG HA-1) WAS OBSERVED IN WEED FREE AND 120 KG SEED HA-1. THE LOWEST GRAIN YIELD (71.32 KG HA-1) WAS OBSERVED IN WEED PLOTS AND 160 KG SEED HA-1. INTERACTION BETWEEN WEEDS, SOWING RATES AND N SPLITTING, SHOWED THE LOWEST GRAIN YIELD (47.7 KG HA-1) WAS OBSERVED IN WEEDY PLOTS WITH 100 KG SEED HA-1 AND FIRST N SPLITTING TREATMENTS. THE HIGHEST GRAIN YIELD (440.07 KG HA-1) WAS OBSERVED IN WEED FREE PLOTS, SOWING RATE OF 120 KG SEED HA-1 AND SECONDARY N SPLITTING TREATMENTS. THE HIGHEST WEED DRY MATTER WAS OBSERVED (367.5 KG HA-1) IN SOWING RATE OF 100 KG SEED HA-1 AND FIRST N SPLITTING TREATMENTS AND THE HIGHEST WEED DRY MATTER (247.5 KG HA-1) WAS OBSERVED IN SOWING RATE OF 160 KG SEED HA-1 WITH FIRST N SPLITTING TREATMENTS.

 
Keyword(s): N SPLITTING, DRY LAND WHEAT SOWING RATE, WEED DRY MATTER
 
 
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