TY  - JOUR
TT  - Determination of the yield reductions and economic threshold caused by common cocklebur (Xanthium strumarium L.) in sunflower production fields in Ankara
AU  - Başaran, Mustafa Selçuk
AU  - Serim, Ahmet Tansel
AU  - Asav, Ünal
PY  - 2017
DA  - September
Y2  - 2017
DO  - 10.16955/bitkorb.286890
JF  - Plant Protection Bulletin
PB  - TARIM VE ORMAN BAKANLIĞI EĞİTİM VE YAYIN DAİRESİ BAŞKANLIĞI
WT  - DergiPark
SN  - 0406-3597
SP  - 251
EP  - 262
VL  - 57
IS  - 3
KW  - Ayçiçeği
KW  - ekonomik zarar eşiği
KW  - domuz pıtrağı
KW  - Xanthium strumarium
N2  - High nutritive content, using in various industrialsectors and adaptation of various regions of sunflower (Helianthus annuus L.) have allowed of cultivation and consumptionat high scale. One of the important problems of sunflower prevalentlycultivated in Marmara and Central Anatolia Regions is weeds. Among the weeds,common cocklebur (Xanthium strumariumL.) is very important because it has a competitive character, and there is onlyone herbicide registered to control this weed. The field study was carried outto determine the economic threshold of common cocklebur in sunflower from 2013to 2015 in Ankara. According to the three-year study values, the highestsunflower plant length (138.33 cm), head diameter (14.4 cm) and 1000-seedweight (85.03 g) were obtained from the control parcels while the lowest plantlength (104.17 cm), head diameter (10.41 cm) and 1000-seed weight (62.81 g)were taken from the parcels consisted of 16 common cocklebur plants. Theeconomic thresholds were calculated using the current sunflower price and theherbicide, imazamox (40 g l-1 SL), price. The economic threshold in2013, 2014 and 2015 were computed as 1.22 plant m-2(Y=-7.139x+142.23), 0.61 plant m-2 (Y=-8.041x+145.84), 1.97 plant m-2(Y=-9.78x+140.26). To control common cocklebur economically in Ankara herbicideapplications should be done when the intensity of common cocklebur reaches thevalues, 0.61-1.97 plant m-2.
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UR  - https://doi.org/10.16955/bitkorb.286890
L1  - https://dergipark.org.tr/en/download/article-file/344871
ER  -