Serçeme Vadisinin Rekreasyonel Kullanım Potansiyelinin Belirlenmesi
Sevgi YILMAZ
Issue: 51, Pages: 1-6, Year: 2004
[Abstract]
ABSTRACT
The toxicity effect of ethanol extracts from Tamarix smyrnensis Bunge, Scorzonera mollis Bieb, Scorzonera tomentosa L., Reseda alba L., Linum bienne Miller, Artemisia santonicum L., Prunus laurocerasus L. and Laurus nobilis L. on feeding and toxicity effect of the large diamondback moth, Plutella xylostella L. was investigated in the laboratory. The highest toxicity effect determined was 85% by A. santonicum, within seven days. The toxicity effects of the other extracts (T. smyrnensis, S. mollis, S. tomentosa, R. alba, L. bienne, P. laurocerasus and L. nobilis) were determined as 55%, 45%, 50%, 60%, 60%, 50% and 55% within the same period, respectively. No mortality was determined on control groups. The highest consuption (10.67 mg) wasobserved with alcohol extract from S. tomentosa and the minimum consuption was with alcohol extract from T. smyrnensis. The other tested extracts showed similar consuption.
Keywords: Plutella xylostella, plant extracts, toxic effect, plants pesticides
Samsun`da Halkın Hava Kirliliğine Bakışı
Kemalettin ŞAHİN
Issue: 51, Pages: 7-12, Year: 2004
[Abstract]
ABSTRACT
The primary objective of this study are to describe the residents perceptions towards air pollution in Samsun. The data used in this paper was collected via questionnaire survey. The data show that many people in Samsun were effected by air pollution, especially during winter period. 78% of respondents think that in winter, the causes of the air pollution are heating techniques and industrial factors. 59% of respondents declared that they use coke or lignite for heating. It has been found that air pollution is lower on windy higher parts of the city. The survey shows that 42% of respondents believe that the exhaust gas emissions and industrial factors are the causes for air pollution during summer period. Many respondents believe that polluted air often causes the complaints of bronchitis, asthma, acute respiratory episodes, and other discomforts. In order to cope with the adverse effects of the air pollution, 51% of the respondents belive that the presence of household heating with low quality fuel or coal should be banned in the Samsun urban area.
Keywords: Air pollution, bronchitis, questionnarie, Samsun
Endemik Onosma bornmuelleri Hausskn.'nın Morfolojisi,Anatomisi ve Ekolojisi Üzerine Bir Araştırma
Öznur ERGEN AKÇİN
Issue: 51, Pages: 13-19, Year: 2004
[Abstract]
ABSTRACT
The primary objective of this study are to describe the residents perceptions towards air pollution in Samsun. The data used in this paper was collected via questionnaire survey. The data show that many people in Samsun were effected by air pollution, especially during winter period. 78% of respondents think that in winter, the causes of the air pollution are heating techniques and industrial factors. 59% of respondents declared that they use coke or lignite for heating. It has been found that air pollution is lower on windy higher parts of the city. The survey shows that 42% of respondents believe that the exhaust gas emissions and industrial factors are the causes for air pollution during summer period. Many respondents believe that polluted air often causes the complaints of bronchitis, asthma, acute respiratory episodes, and other discomforts. In order to cope with the adverse effects of the air pollution, 51% of the respondents belive that the presence of household heating with low quality fuel or coal should be banned in the Samsun urban area.
Keywords: Air pollution, bronchitis, questionnarie, Samsun
Tütün (Nicotiana tabacum L.)`de Görülen Yalancı Orabanş Hastalığına Karşı Bazı Organik Uygulamalar
Serpil ÖDEN, Mehmet DEMİRCİ, Tolga ZORBA
Issue: 51, Pages: 20-25, Year: 2004
[Abstract]
ABSTRACT
The study was carried out on the infected soil which was provided from the villages near to Akhisar, to solve the problem of False Broomrape disease, the infectious disease for tobacco (Nicotiana tabacum L.). It was treated with fermented horse and sheep manure, and also bread bean and stinging nettle extract (Urtica dioica L.) as green manure. In the early studies, the infected plant ratio in untreated groups was 38.0%, but in the groups which were applied stinging nettle extract, it was only 8.32%. In the second year studies, the infected plant ratio in untreated groups was 63.75%, but in the groups which were applied stinging nettle extract, it was only 37.1%. So it's understood that the nettle extract can reduce the infestation of the disease.
Keywords: False broomrape, green manure, stinging nettle extract, tobacco diseases
Bartın Kentinin Çayır Vejetasyonu Üzerinde Gözlemler
Hale YILMAZ
Issue: 51, Pages: 26-32, Year: 2004
[Abstract]
ABSTRACT
To reveal the variation and composition of the flora in the urban settlements of Bartin, a research study, based on flora and vegetation, was conducted. Dry and semi-dry meadows that spread out on the slopes of the city were chosen as the study area. These meadows which constitute a considerable portion of the herbaceous taxa of the urban flora, differ in structure from the plain meadows. For the determination of this structure, plant samples were collected from three plots which were chosen considering the habitat factors and the vegetation cover diversity. 93 herbaceous plant taxa belonging to 26 familias were determined as a result of the analysis. Among these taxa, both Euro-Siberian and Mediterranean elements lead with 22 taxa. Five taxa are endemic for the region.
Keywords: Bartin, meadow, urban flora
Bursa İlinde Nilüfer-Ayvalı Deresiyle Sulanan ve Sulanmayan Tarım Topraklarının Bazı Kimyasal Özellikleri
Fatma Olcay KOCAER, Hüseyin Savaş BAŞKAYA
Issue: 51, Pages: 33-38, Year: 2004
[Abstract]
ABSTRACT
In this research, some chemical properties of soils nonirrigated and irrigated with Nilufer-Ayvali stream were compared and probable differences which might occur due to irrigation were studied. The results showed that irrigation with Ayvali stream especially increased the EC250C value and free+exchangeable cations of the soil. Organic matter and nutrient content of irrigated soil also increased in upper layers. The extinction ratios of examined soils showed that organic matter in irrigated and nonirrigated soils were probably different in structure. Hydrolisable total nitrogen concentrations in irrigated soils indicated that the nitrogen forms in irrigation water were resistant to microbial degradation.
Keywords: Cations, irrigation water, nutrients, organic matter, soil
Aşağı Pasinler Ovası Topraklarının Toprak Kalite İndeks Parametreleri Bakımından Değerlendirilmesi
Ali Kılıç ÖZBEK
Issue: 51, Pages: 39-44, Year: 2004
[Abstract]
ABSTRACT
It is possible to provide sustainable use of soil resources by determining soil quality trends within specific periods. The objective of this study was to determine soil quality parameters of the Asagi Pasinler Plain soils with an area of 6103 hectares that will be used for irrigated agriculture in near future, and to provide information for making effective soil-water management practices. Quality Score for the soils in the study area was determined by evaluating physical and chemical soil properties and land characteristics. It was found that the plain soils have 2-grade soil source with degradated pH, organic matter and fundamental plant nutrients. Soils in the study area need to be rehabilitated for top soil depth, erosion and water holding capacity. It was also obtained that soils are in good condition respect to soil texture, structure, drainage and ground water quality. In the study area, it is important to define the process, factors and causes of soil degradation, and to assess the quality of soil that indicates the capacity of soil to sustain biological productivity and promote plant and animal health for sustainable resource management.
Keywords: Asagi Pasinler, degradation, soil, soil quality, sustainability