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    A STUDY ON THE EFFECTS OF WOOD VINEGAR ON WEEDS AND CULTIVATED PLANTS IN THE WHEAT AGRO-ECOSYSTEMS
    (Parlar Scientific Publications (P S P), 2019) Koc, Ibrahim; Namli, Ayten; Mendes, Mehmet; Pinar, Suleyman Mesut; Cig, Fatih; Yardim, Erdal Necip
    This study was conducted to determine the effects on the weeds and cultivated plants in the wheat agro-ecosystems of the wood vinegar in the biopesticide potential obtained from hazelnut shells on certain growth and yield parameters. The study was conducted based on the Randomized Blocks Testing Design with repeated four times. In the experiment, treatments of 0.5%, 1.0%, 2.0%, 3.0%, 4.0%, and 5.0% mL doses of wood vinegar were administered, and only tap water was given to the control group. It was found that the 4% mL dose had positive effects on cultivated plant height and that the 1% mL dose had positive effects on thousand kernel weight and seed per spike compared with the control. It was seen that its effect on weeds dry weight is changed according to the years (P=0.011). In 2015-2016, it was found that 3% mL increased and 0.5%, 1% and %5 mL decreased the weight of dry grass. In the test field; weeds determination is made from 12 families. In 2014-2015, Polygonum bellardii, Eremopoa altaica and Microthlaspi perfoliatum; and in 2015-2016, Eremopoa altaica, Erodium absinthoides, Lactuca serriola and Polygonum bellardii was seen most.
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    DIVERSITY AND METABOLIC POTENTIAL OF CULTURABLE N2-FIXING AND P-SOLUBILISING BACTERIA FROM RHIZOSPHERE OF WILD CROPS IN VAN LAKE BASIN -TURKEY
    (Pakistan Botanical Soc, 2024) Erman, Murat; Kotan, Recep; Cakmakci, Ramazan; Cig, Fatih; Karagoez, Kenan; Soenmez, Ferit; EL Sabagh, Ayman
    The diversity of phosphate solubilizing and nitrogen -fixing bacteria from rhizospheric soil samples of different plant species (native wild cereals, beet, stonecrops, onion, rose, raspberry, and 10 other plant genera) grown at four different locations in the Van Lake Basin, Turkey were investigated. A total of 169 rhizosperic soil samples were gathered from these plant species, and over 777 rhizoplane bacteria were haphazardly selected from agar -solidified trypticase soy broth and examined for fatty acid methyl ester (FAME) reports. As a result, 57 bacterial genera were recognised, which 64.8% gone to five genera viz., Bacillus (29.6%), Pseudomonas (9.8%), Stenotrophomonas (9.7%), Paenibacillus (5.7%), Micrococcus (5.1%), and Arthrobacter (4.9%). Approximately 56.8% of bacteria were found to be gram -positive (GPB), while 43.2% as gram -negative bacteria (GNB). In the of total GPB, 56.3% were N2 -fixing bacteria and 46.6% were P-solubilising bacteria, while in the case of GNB, 43.7% were N2 -fixing bacteria and 53.4% were P-solubilising bacteria. A total of 651 bacteria were isolated from the rhizospheric samples of the 20 plant genera, and subjected to further analysis. Of the 651 isolates, 542 were able to fix nitrogen, 279 were able to solubilize phosphates, and 247 isolates could fix both nitrogen and solubilize phosphates all at once. Bacillus, Pseudomonas, Stenotrophomonas, Paenibacillus, Micrococcus, Serratia, and Pantoea genera were the most prominent N2 -fixing and P-solubilising groups. Additionally, B. megaterium, B. atrophaeus, B. cereus, B. pumilus, B. licheniformis, B. subtilis, Pb. polymyxa, Pb. macerans, Pb. macquariensis, Bb. choshinensis, Ste. maltophilia, Ps. fluorescens, Ps. putida, Ps. stutzeri, Pn. agglomerans, Mic. luteus, Rco. erythropolis, Kocuria rosea, Csb. Meningosepticum, and Serratia fonticola were the mainly frequent P-solubilising and N2 -fixing species in the native rhizosphere soils of plants.