EFFECT OF DEFOLIATION ON YIELD AND YIELD COMPONENTS IN SUNFLOWER

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ABBASPOUR F.; SHAKIBA MOHAMMAD REZA; AALIARI HOUSHANG; VALIZADEH M.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2003 | Volume:12 | Issue:4 Page(s): 71-77

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Information Journal Paper

Title

EFFECT OF DEFOLIATION ON YIELD AND YIELD COMPONENTS IN SUNFLOWER

Author(s)

ABBASPOUR F. | SHAKIBA MOHAMMAD REZA | AALIARI HOUSHANG | VALIZADEH M. | Issue Writer Certificate

Keywords

DEFOLIATIONQ2

GRAIN YIELD AND YIELD COMPONENTSQ3

SUNFLOWERQ2

Abstract

In order to study the effect of DEFOLIATION and stand reduction on GRAIN YIELD AND YIELD COMPONENTS in SUNFLOWER, an experiment was conducted in Agricultural Research Station, Faculty of Agriculture, University of Tabriz in 2000. Two varieties namely Azargol (CMS19x R46) and Golshid (CMS31 xR46) were used in this study. The leaves were removed at the time of beginning of anthesis (R5) and the treatments consisted of five levels including check (no leaves removed), removal of one third upper leaves, removal of one third middle leaves, removal of one third lower leaves, and removal of all leaves of the plant. The experiment was carried out in randomized complete block design with three replications. Each plot consisted four 4 m long rows spaced 0.75m apart with 25cm between plants on each row. With the exception of plant height and stem diameter, head diameter, filled achene percent, 1000 grain weight, harvest index and grain yield was reduced as a result of partial or complete leaf excision when compared with the undefoliated check. Middle leaves showed maximum effect on filling of grains due to their largest surface and more photosynthetic activity. Grain yield was minimum at treatment with all leaves removal as reflected by less 1000 grain weight and filled achene percent.

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مطالعات تفصیلی 18 هکتار از اراضی و خاک های ایستگاه تحقیقات کرکج

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APA: Copy

ABBASPOUR, F., SHAKIBA, MOHAMMAD REZA, AALIARI, HOUSHANG, & VALIZADEH, M.. (2003). EFFECT OF DEFOLIATION ON YIELD AND YIELD COMPONENTS IN SUNFLOWER. JOURNAL OF AGRICULTURAL KNOWLEDGE, 12(4), 71-77. SID. https://sid.ir/paper/28708/en

Vancouver: Copy

ABBASPOUR F., SHAKIBA MOHAMMAD REZA, AALIARI HOUSHANG, VALIZADEH M.. EFFECT OF DEFOLIATION ON YIELD AND YIELD COMPONENTS IN SUNFLOWER. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2003;12(4):71-77. Available from: https://sid.ir/paper/28708/en

IEEE: Copy

F. ABBASPOUR, MOHAMMAD REZA SHAKIBA, HOUSHANG AALIARI, and M. VALIZADEH, “EFFECT OF DEFOLIATION ON YIELD AND YIELD COMPONENTS IN SUNFLOWER,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 12, no. 4, pp. 71–77, 2003, [Online]. Available: https://sid.ir/paper/28708/en

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