Paper Information

Title: 

STUDY OF EFFECT OF PLOWING AND PHOSPHATE FERTILIZER ON WEED POPULATION AND RICE AGRONOMIC TRAITS

Type: PAPER
Author(s): MOHADDESI ALI,MOHAMMADIYAN MOHAMMAD,MOHAMMAD SALEHI MASOUD,ABBASIAN ABOUZAR,BAKHSHIPOUR SAEED
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

IN ORDER TO EVALUATE THE BEST TIME OF PLOWING AND PHOSPHORUS FERTILIZER APPLICATION ON WEED POPULATION AND AGRONOMIC TRAITS IN PADDY FIELD, A FIELD EXPERIMENT WAS CONDUCTED IN RICE RESEARCH STATION ON TONEKABON (CHAPARSAR) IN 2007-2008. THE EXPERIMENTAL DESIGN WAS SPLIT PLOT WITH RCBD ARRANGMENT IN THREE REPLICATIONS IN WHICH TIME OF PHOSPHORUS FERTILIZER APPLICATION AT TWO LEVELS WERE CONSIDERED AS MAIN PLOT AND TIME OF PLOWING WAS SUB-PLOT AT FOUR LEVELS. THE RESULTS SHOWED THAT TIME OF PHOSPHORUS FERTILIZER APPLICATION HAS SIGNIFICANT EFFECT ON PALNT HEIGHT, PANICLE LENGTH AND NUMBER OF WATER GRASS (ECHINOCHLEA CRUS-GALLI) IN FIRST AND SECOND PERIOD AND BROAD LEAVE WEEDS. THERE WAS SIGNIFICANT DIFFERENCES IN YIELD, PALNT HEIGHT, NUMBER OF WATER GRASS IN SECOND PERIOD IN THE TIME OF FIRST PLOWING TREATMENT. THE BEST TREATMENT FOR OBTAIN HIGH YIELDING WAS INTERACTION BETWEEN PLOWING IN JANUARY WITH PHOSPHORUS FERTILIZER APPLICATION IN LAST HARROWING AND THE LEAST YIELD WAS INTERACTIONS BETWEEN PLOWING IN MARCH WITH TIME OF PHOSPHORUS FERTILIZER APPLICATION WITH PLOWING TREATMENTS. THE REASON OF INCREASING YIELD FOR PLOWING IN JUNARY THAN MARCH WAS INCREASING NUMBER OF PANICLE IN M2, NUMBER OF FILL GRAIN AND 100-GRAIN WEIGHT.

 
Keyword(s): RICE, PLOWING, PHOSPHATE FERTILIZER, RICE WEED POPULATION AND AGRONOMIC TRAITS
 
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