EVALUATION INTERFERENCE AND DETERMINE THE BEST INDEX COMPETITION WEEDS IN WHEAT CULTURE

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SALEHIAN H.; NIK KHAH KOOCHAKSARAIE H.; RAHIMIAN H.; GHANBARY A.

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Journal: Year:2008 | Volume:13 | Issue:1 Page(s): 117-129

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Title

EVALUATION INTERFERENCE AND DETERMINE THE BEST INDEX COMPETITION WEEDS IN WHEAT CULTURE

Author(s)

SALEHIAN H. | NIK KHAH KOOCHAKSARAIE H. | RAHIMIAN H. | GHANBARY A. | Issue Writer Certificate

Keywords

WEED INTERFERENCEQ2

WHEAT YIELD LOSSQ3

COMPETITION INDICESQ2

Abstract

An experiment was conducted to determine the best index for predicting WHEAT YIELD LOSS at the beginning and end of the growth season, estimation of quantity and portion of any of the weeds in interference with wheat, conducted in the research agriculture station in Islamic Azad university of Ghaemshahr in 2002. For this purpose, dimension of field 24*35 meter was chosen. In this area, four strips with 35 meters long with 6 meters wide was chosen, equal to the position - sprayer. Then each strip was accidentally allocated to one of the f91l6wmgtreatments: Un controlling the weeds, controlling the narrow leaves weeds, controlling the wide leaves weeds, and controlling all of the weeds with using the suitable herbicides. Any strip was divided to two sections in lengthwise; in first section, density, leaf area and dry weight of wheat and weeds measured at the beginning of the season while in the second section these variables were measured during the harvest. The results show that at the beginning of the growth season, the best index to predict the wheat yield is wheat and weed relative leaf area, while at the end of the season it is for the leaves weight. The model which was used to explain the Intra-species and inter-species competition was based on the wheat grain weight reciprocal law. The model evaluation about independent variables of four species including Triticum aestivum, phalaris sp., Descurainia sophia and veronica persica at the beginning of the growth season showed that phalaris sp. could meaninglessly increase wheat growth and yield. More over, partial coefficient detennination was used to review the portion of any ariables (species). Among the wide leaf weeds, the most inhibition was allocated to the Descurainia sophia and the portion of the inter-species competition for reduce wheat yield was more than wheat intra species competition.

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APA: Copy

SALEHIAN, H., NIK KHAH KOOCHAKSARAIE, H., RAHIMIAN, H., & GHANBARY, A.. (2008). EVALUATION INTERFERENCE AND DETERMINE THE BEST INDEX COMPETITION WEEDS IN WHEAT CULTURE. JOURNAL OF AGRICULTURAL SCIENCES, 13(1), 117-129. SID. https://sid.ir/paper/7919/en

Vancouver: Copy

SALEHIAN H., NIK KHAH KOOCHAKSARAIE H., RAHIMIAN H., GHANBARY A.. EVALUATION INTERFERENCE AND DETERMINE THE BEST INDEX COMPETITION WEEDS IN WHEAT CULTURE. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2008;13(1):117-129. Available from: https://sid.ir/paper/7919/en

IEEE: Copy

H. SALEHIAN, H. NIK KHAH KOOCHAKSARAIE, H. RAHIMIAN, and A. GHANBARY, “EVALUATION INTERFERENCE AND DETERMINE THE BEST INDEX COMPETITION WEEDS IN WHEAT CULTURE,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 1, pp. 117–129, 2008, [Online]. Available: https://sid.ir/paper/7919/en

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