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Articles by Izzet Kadioglu
Total Records ( 2 ) for Izzet Kadioglu
  Izzet Kadioglu and Yusuf Yanar
  In this study, mostly weeds, the effect of 22 plant`s extracts on germination of seeds from nine different weeds was investigated. Plants used were sampled with their leaves and flowers, in 2002, then plant extracts were obtained after they were ground and processed with methanol. The experiments were conducted in 9 cm diameter sterile petri dishes inside covered with sterile filter paper. Fifty seeds were placed in each of petri dishes. Acetone (10%) was used as the control. The seeds germinated were taken out from the petri dishes and counted in every three day during 21 days. Lepidium sativum L. was very slightly affected by the extracts. All the weeds extracts except Lolium temulentum L. were stimulated the seed germination of Descurania sophia L. Webb. Ex. Prant. at a different levels. Germination of Lolium perenne L. were inhibited most strongly by Salvia officinalis L., Laurus nobilus L. and Artemisia vulgaris L. The extracts of all the plants studied inhibited the germination of Abutilon theophrastii Medik, Amaranthus retroflexus L., Avena sterilis L., Rumex crispus L. and Trifolium repens L. It was concluded that some of these extracts may be used as herbicide to control the germination and growth of some other weeds.
  Izzet Kadioglu
  This study was conducted to determine possible allelopathic and herbicidal effects of ground plant tissues and leaves-flowers and seed extracts of hearleaf cocklebur (Xanthium strumarium L.) on some crops and weeds. Experiments were repeated twice in 2003 and 2004 using organs and seeds of hearleaf cocklebur were collected in the Spring of 2002. Seedling studies were carried out in the laboratory with extract of hearleaf cocklebur in 9 cm diameter petri dishes and in greenhouse in pots 12x16 dimension pots. In the laboratory, hearleaf cocklebur had no allelopathic effect on the seeds of Daucus carota L., Descurania sophia (L.) Webb. Ex Prant., Abutilon theophrastii Medik. and Lepidium sativum L.. However, it inhibited the germination considerably in Triticum vulgare L., Hordeum vulgare L., Lolium perenne L. and Avena sterilis L. Effect of hearleaf cocklebur on the plants growth in the pots in post-emergence ranged from 0.00% to 86.66%. The herbicidal effects of hearleaf cocklebur was high in Amaranthus retroflexus L., Papaver somniferum L. and D. sophia. The inhibitory effect of ground hearleaf cocklebur on A. retroflexus, A. sterilis and Conium maculatum L. was greater than on the other plant species used in this study.
 
 
 
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