1995, Volume: 1, Number: 1
Contents
 
HALLORAN, N., R. YANMAZ, M. U. KASIM and R. ÇAĞIRAN, Effect of Different Packing Materials on the Storage of Peppers (Capsicum annum L. var. Longum) Abstract
KARAHAN, A. G. and L. M. ÇAKMAKÇI, Antibiotic Resistances of Some Lactobacillus Strains Isolated From Chicken Cecum Abstract
AKPINAR, N. and H. ÇELEM, Environmental Impact Assessment (EIA) For Strip Coal Mining and Land Reclamation Case Study: Milas-Sekköy Strip Coal Mine Abstract
OĞUZ, M. and M. BEYRİBEY, Monitoring and Evaluation of Gökçeada Irrigation Project Abstract
İNAL, A. and A. GÜNEŞ, Effects of Nitrogenous Fertilization on Yield and Nitrate Accumulation in Sugar Beet Abstract
İNAL. A., M. R. KARAMAN and D. ERDEN, Determination of Potassium Requirement and Effects of Potassium Fertilization on Growth Parameters of Hypoestes (Hypoestes sanguinolenta) Abstract
KÜTÜK, A. C., G. ÇAYCI and A. BARAN, The Use Possibilities of Tea Wastes as A Plant Growth Medium Abstract
ARCAK, S., S. M. OMAR and K. HAKTANIR, Effect of Trifluralin on Nitrification and Catalase Activity of the Soil Abstract
ÇAYCI, G., A. İNAL, A. BARAN and S. ARCAK, The Effects of Sulphur Addition and İncubation Period on Some Chemical Properties of Peat as Plant Growth Medium Abstract
Abstracts
 

1995, 1 (1) 1-6
Effect of Different Packing Materials on the Storage of Peppers (Capsicum annum L. var. Longum)
(Turkish)

Nilgün HALLORAN, Ruhsar YANMAZ, M. Ufuk KASIM and Rezzan ÇAĞIRAN
Ankara University, Faculty of Agriculture, Department of Horticulture-Ankara

The storage period for the pepper of Bağcı Çarliston and Demre Sivrisi cultivars stored in "Modified Atmosphere" and packaged under different conditions was investigated. 1.0 kg perforated and unperforated polyethylene (PPE, UPPE) polypropylene (PPP, UPPP) and plastic trays wrapped with strech film for only long peppers were used as packaging materials, and unpacked peppers were used as control. A storage room set at 8o ± 1oC with a 85-90% relative humidity was used for these experiments. Weight loss, total soluble solids, respiration rate, cracking score, percentage of infected product and product affected by chilling injury were determined at 7-day intervals during the storage period and after transfer to a room temperature environment for 48 hours. Because of significant weight loss, the storage period was limited to three weeks for the Çarliston fruit controls and to two weeks for Demre Sivrisi pepper cultivar. UPPP packaging extended the storage period, but infection limited this period to four weeks for the Çarliston cv. UPPE, PPE, and PPP packaging prolanged this period to five weeks, but the percentage infection and chilling injury increased during the 6th week of storage. The storage period was determined to be as long as 6 weeks without loss of high quality in the Demre Sivrisi cultivar for all treatments excepting control treatment. When weight loss, cracking rate, chilling injury and infected fruits were taken into account, UPPE gave the best result in both cultivars.

Key Words: pepper, modified atmosphere, cold storage, packaging


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1995, 1 (1) 7-12
Antibiotic Resistances of Some Lactobacillus Strains Isolated From Chicken Cecum (Turkish)

Aynur Gül KARAHAN and M. Lütfü ÇAKMAKÇI
Ankara University, Faculty of Agriculture, Department of Food Engineering-Ankara

The study focused on isolation of Lactobacillus strains from the chicken cecums and determination of their ratio in cecum and of their antibiotic resistances. Mainly Lactobacillus acidophilus, L. agilis, L. animalis, L. brevis, L. coryniformis subsp. Torquens, L. fermentum and L. plantarum were determined. Beyond that 20 different antibiotics were used to determine their effect on Lactobacillus strains growth. According to the antibiotic susceptibility test all Lactobacillus strains were sensitive to amoxicilin, ampicillin and carbenicillin. In a contrast all strains were found to be resistant against to polymyxin B. The resistance were changed between 75-92.5 % against bacitracin, gentamycin, kanamycin, nystatin, spectinomycin and streptomycin.

Key Words: lactobacilli, cecum, antibiotic sensitivity

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1995, 1 (1) 13-16
Environmental Impact Assessment (EIA) For Strip Coal Mining and Land Reclamation Case Study: Milas-Sekköy Strip Coal Mine (Turkish)

Nevin AKPINAR and Hayran ÇELEM
Ankara University, Faculty of Agriculture, Department of Landscape Architecture-Ankara

This study includes an analysis of the environmental impacts of strip coal mining and stresses that combinatiing EIA considerations with those of land reclamation is necessary to minimize the negative environmental impacts brought about by strip coal mining activity. This approach, in general, emphasises on Landscape architecture field's basic philosophy. Presenting a case study, the thesis encompasses a particular area: Milas-Sekköy strip coal mining area. It scrutinizes the extent of environmental degradation by analyzing the natural and cultural characteristics of the site. A set of recommendations is to carry out a land reclamation practise. Considerations of land reclamation issue for Milas-Sekköy area due to the necessity of a post-mining land use planning practise, provide four possible land use forms; agriculture afforestation pasture / grazing and aforestation + recraeation. Each use form is then further examined together with compatible land-use possibilities. The study concludes with a set of rehabilitation and plantation recommendations for the study are. All data analyses, evaluations, syntheses mappings area performed by the assistance of a computer.

Key Words: strip coal mining, land reclamation post mining land use planning, EIA Milas-Sekköy

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1995, 1 (1) 17-26
Monitoring and Evaluation of Gökçeada Irrigation Project
(Turkish)

Mehmet OĞUZ and Mevlüt BEYRİBEY
Ankara University, Faculty of Agriculture,Department of Farm Structures and Irrigation-Ankara

This study was carried out to monitor and evaluate the water use of Gökçeada Irrigation Project. For this purpose field application efficiency, farmers capability to determine when to irrigate, planning and evaluation of irrigation management, evaluation of pre-season irrigation planning and the effecting factors for irrigation ratio were investigated. CROPWAT computer programme was used in the subjects related to irrigation management.

Key Words: irrigation performance, monitoring, evaluation, irrigation management, cropwat

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1995, 1 (1) 27-30
Effects of Nitrogenous Fertilization on Yield and Nitrate Accumulation in Sugar Beet
(English)

Ali İNAL and Aydın GÜNEŞ
Ankara University, Faculty of Agriculture, Department of Soil Science-Ankara

The effects of increasing N rates on yield and nitrate content of sugar beet plant were studied under field conditions on micro-plots. N was applied at 0, 5, 20, 50, 100, 200 and 500 mg/kg soil rates with two equal portions. At the end of the experiment, fresh and dry weights of the leaves and roots, and total-N and NO3-N contents of leaves and roots were determined. The results indicated that, all of the measured parameters were increased with the increasing nitrogen rates. The highest yield, total-N and NO3-N contents were obtained from the 200 and 500 mg/kg N treatments respectively.

Key Words: sugar beet, nitrogenous fertilization, nitrate accumulation

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1995, 1 (1) 31-34
Determination of Potassium Requirement and Effects of Potassium Fertilization on Growth Parameters of Hypoestes (Hypoestes sanguinolenta)
(English)

Ali İNAL1, M. Rüştü KARAMAN2 and Dilara ERDEN1
1Ankara University, Faculty of Agruculture, Department of Soil Science-Ankara
2GOP University, Faculty of Agriculture, Department of Soil Science-Tokat

Hypoestes sanguinolenta were planted in PVC pots filled with perlite and irrigated with nutrient solutions of variable potassium contents. The height, fresh and dry weights and mineral composition of top and root and nutrient uptake were evaluated. The results obtained showed that increase of the K level in the nutrient solution up to 100 ppm increased the height of top and root, and grawth. Above this level, they were affected adversely. Mineral composition of plants showed similar tendency to that of growth. Top and root height showed approximately three-fold an one and a half fold increase over to the control at 100 ppm K level reaching from 15.9-to 43.4 cm and 16.1-to 24.3 cm respectively for top and root Fresh and dry weights increased from 3.17 to 18.96; 0.49 to 2.49 g/pot for top and 1.92 to 6.19; 0.16 to 0.50 g/pot for root respectively at the same K rates. While uptake and contents of P with K uptuke by both top and root increased up to 100 ppm K level, each increment of K in nutrient solution resulted in increasing in K concentration.

Key Words: ornamental plants, hypoestes, mineral composition, potassium

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1995, 1 (1) 35-40
The Use Possibilities of Tea Wastes as A Plant Growth Medium
(Turkish)

A. Cihat KÜTÜK, Gökhan ÇAYCI and Abdullah BARAN
Ankara University, Faculty of Agruculture, Department of Soil Science

The research was carried out on tea wastes supplied from General Directorate of Tea Enterprises. The use possibilities of coarse fine composted and enriched composted tea wastes were as a plant growth medium studied. Tea wastes were seperated four different size fractions as 0-2.00 mm, 2.00-4.00 mm, 4.00-6.35 mm and < 6.35 mm according to major agregate sizes and physical analysis were accomplished on those fractions. When the physical parameters were taken into consideration, 0-2.00 mm fraction of composted and enriched composted tea wastes were determined suitable as plant growth medium. However, tea wastes having physical problems seem to be usable as a plant growth medium one can prepare their suitable mixtures with some materials such as peat and perlite, have higher easily available water content and higher aeration capacity or the use of different particle sizes in medium. In general, there was no problem in tea wastes in respect to the chemical characteristics. However, the pH values of composted and enriched composted tea wastes are high. Therefore, their pH should be adjusted to the appropriate values which could not impede a controlled plant nutrition programme.

Key Words: tea waste, compost, plant growth medium

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1995, 1 (1) 41-46
Effect of Trifluralin on Nitrification and Catalase Activity of the Soil
(Turkish)

Sevinç ARCAK, Satea M. OMAR and Koray HAKTANIR
Ankara University, Faculty of Agriculture, Department of Soil Science

Effect of Trifluralin, used as preemergence herbicide, on soil nitrification and soil catalese activity were studied on a fine textured soil sample. Soil samples treated with three different doses of Trifluralinin (0.0 mg, 0.4 mg and 0.8 mg active ingredient kg-1 as equivalent application rate of treflan 0.0, 200 and 400 ml active indegredient da-1), at three different moisture levels (75 %, 100 %, and 150 % of field capacity) at 27oC were incubated for 18 days. Testing of trifluralin doses significantly (P<0.01) effected on catalase activity according to soil moisture and incubation time. Also nitrification processes significantly (p<0.01) increased in time depending on soil moisture levels.

Key Words: nitrification, soil catalase activity, herbicides, soil moisture

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1995, 1 (1) 47-54
The Effects of Sulphur Addition and İncubation Period on Some Chemical Properties of Peat as Plant Growth Medium
(Turkish)

Gökhan ÇAYCI, Ali İNAL, Abdullah BARAN and Sevinç ARCAK
Ankara University, Faculty of Agriculture, Department of Soil Science

In this research, the effects of sulphur addition and incubation period on some chemical properties of peat as plant growth medium were investigated. Native peat material taken from Bolu-Yeniçağa which has currently been mostly consumed was used in this study. Four rates of sulphur (0.05, 1.0 and 2.0 kg/m3) were added to peat at four incubation periods (1,2,4 and 8 weeks). At the end of the each incubation period, the changes in some chemical properties were determined. As a result, sulphur addition and incubation periods could impose desirable pH ranges in Bolu-Yeniçağa peat which had higher pH than required. Decreasing in pH caused by the sulphur doses, generally resulted in a decrease in NH4-N content but an increase in NO3-N, P, Fe Mn and Cu contents of peat samples. Nevertheless, it was observed that, total-N content of peat decreased considerably during the incubation periods.

Key Words: peat, incubation, sulphur, pH, plant growth medium

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