2000, Volume: 6, Number: 2
Contents
KENDİR, H. Seed Yields and Some Plant Traits of Common Vetch (Vicia sativa L.) Lines Abstract
DEMİR, N. and D. ATAY, Impact of Fish Cage Culture on the Phytoplankton in Bodrum Abstract
ÖZKAN M. M. and T. KESİCİ Estimation of Realized Heritability for Selected Japanese Quail Line Abstract
YÜZBAŞI, N. and T. URAZ, Use of Glucono Delta Lactone (GDL) in White Pickled Cheese Manufacture.II. With Starter Culture Abstract
KÖKSAL, A. İ., O. YILDIRIM, H. DUMANOĞLU, A. KADAYIFÇI and N. GÜNEŞ, Evapotranspiration of Apple Trees for Different Irrigation Methods Abstract
BOZKURT, M. A., K. M. ÇİMRİN and F. GÜLSER Effect of Nitrogenous and Phosphorous Fertilization on Leaf Mineral Composition and Growth of Apple Trees Abstract
ETİKAN, S., N. KAYABAŞI and S. KIZIL Colors Obtained From Thyme Plant and A Research on Some Fastness Values of Its Colors Abstract
TATLIDİL, F. F. The Effects of Different Storage Methods on Carrot Cost in Beypazarı District Abstract
ERZURUM, K. Investigations on Pathogenicity of Macrophomina phaseolina ( Tassi ) Goidanich on Melon Abstract

DELLAL, G., F. SÖYLEMEZOĞLU, S. ETIKAN and Z. ERDOĞAN A Research on Some Wool Characteristics of Anatolian Merino Ewes Abstract

KÜTÜK C. and G. ÇAYCI The Use of Bark as Potting Medium for Growing of Begonia (Begonia semperflorens) Plant Abstract
KEPENEKCİ İ. and SUSURLUK, İ. A., A New Species of Entomopathogen Nematode for Turkey Heterorhabditis marelatus Liu and Berry, 1996 (Rhabditida: Heterorhabditidae) Abstract
SÖNMEZ F. and N. YILMAZ The Effects of Nitrogen and Phosphorous on Contents of Some Macro and Micro Nutrients in Barley Grain Abstract
ERŞAHİN S. and M. R. KARAMAN, Use of Factor Analysis in the Assessment of Soil Variability for Site Specific Management and Soil Fertility Studies Abstract
MİMARYAN, M. and S. M. YENER, Correlations Between Type Traits, Live Weight and Milk Yield in Black Pied Cows and Possibilites of Using These in Selection Abstract
KOR, A. and M. ERTUĞRUL, Some Slaughtering- Carcass Characteristics and Meat Composition of Akkeçi Male Goats Abstract
BAŞPINAR, E. and F. GÜRBÜZ, The Table Values for the Significance Test of Intra-Class Correlation Coefficient Abstract
BAŞPINAR E. and M. MENDEŞ, The Usage of Correspondence Analysis Technique at the Contingency Tables Abstract
ELİBOL, O. and M. TÜRKOĞLU, Effects of Short Storage Periods and Flock Ages on Hatchability of Broiler Breeder Eggs Abstract
ÖLMEZ, N. F. and A. KANIK, Grouping Hand Woven Carpet Types With Discrimant Analysis Technique to Technolocical Properties Abstract
TABAN S. and V. KATKAT, Effect of Salt Stress on Growth and Mineral Elements Concentrations in Shoot and Root of Maize Plant Abstract
SAÇILIK K. and R. ÖZTÜRK, The Determination of Some Aerodynamic Properties of Screens to be Used in Airflow-Systems Abstract
Abstracts
 

2000, 6 (2) 1-7
Seed Yields and Some Plant Traits of Common Vetch (Vicia sativa L.) Lines
(Turkish)

Hayrettin KENDİR
Ankara University, Faculty of Agriculture, Department of Agronomy-Ankara

The area sown to forage is not adequate in Turkey. Introducing new plants species and cultivars to farming system would help develop forage production. In this research 16 common vetch lines obtained from different countries were tested for their seed yield and some agronomic characters in Ankara conditions over 2 years. The experiment was conducted at the experimental fields of Field Crops Department of Agricultural Faculty of Ankara University. In the study, plant height and stem number varied between 59.57-87.62cm, 2.13-3.35 while pod number per plant and first pod height varied between 6.42-11.72 and 22.58-37.11 cm, respectively. Pod length and seed number per pod were between 40.67-57.33 mm and 3.98-5.47. Biological yield, seed yield, harvest index were changed between 294.03-501.08 kg/da, 88.67-164.92 kg/da, % 29.82-38.63, respectively. It is also found that thousand seed weights were between 36.72-50.77 g. The lines used in the experiment needed 84.5-92 days to maturity. According to the results, Line 2003, Line 2560 and Line 2083 produced as much biological and seed yield as control plants.

Key Words: Common vetch, seed yield, biological yield, harvest index, plant characteristics

top

2000, 6 (2) 8-11
Impact of Fish Cage Culture on the Phytoplankton in Bodrum
(Turkish)

Nilsun DEMİR and Doğan ATAY
Ankara University, Department of Fisheries and Aquaculture-Ankara

The phytoplankton were monitored in two stations (near cages and open water) of a cage farm to determine the impact of cage culture of sea bream and bass. Phytoplankton numbers were higher in cage station than in open station (p<0,01). Chlorophyll a values of cage station were higher than open station too. Pennate diatoms were dominated by Rhizosolenia spp., Thalassionema nitzschioides and Leptocylindricus danicus. Phytoplankton composition seems to be not different in cage and open stations.

Key Words : phytoplankton, cage culture, chlorophyll, pennate diatom

top

2000, 6 (2) 12-14
Estimation of Realized Heritability for Selected Japanese Quail Line
(Turkish)

M. Muhip ÖZKAN and Tahsin KESİCİ
Ankara University, Department of Fisheries and Aquaculture-Ankara

In this study, the heritabilities realized with the effect of selection on 5-weeks body weight of japanese qual line between 7th and 15th generations were calculated with two methods named h12 and h22. The estimated heritability values higher in females than in males for each methods. And also heritabilities calculated with h12 method were higher in males and females than h22 method.

Key Words: Japanese quail, selection, heritability

top

2000, 6 (2) 15-21
Use of Glucono Delta Lactone (GDL) in White Pickled Cheese Manufacture.II. With Starter Culture (Turkish)

Nuray YÜZBAŞI and Tümer URAZ
Ankara University, Department of Dairy Technology-Ankara

In this research the effect of using starter culture with Glucono Delta Lactone (GDL) on quality criteria of Pickled white cheese was investigated. For this purpose, raw milk was divided into 3 parts and chees samples were manufactured by adding starter culture and GDL, (A- % 1 starter culture (Control), B- % 1 starter culture + % 0.2 GDL, C- % 1 starter culture + % 0.5 GDL ). Total solids, fat, total nitrogen, titratable acidity and pH values in raw milk were determined. Furthermore, counts of total bacteria in pasteurized milk were carried out. In cheese samples, total solids, fat, salt, total nitrogen, water soluble nitrogen, non-protein nitrogen, tyrosine, total volatile fatty acids, titratable acidity, pH and penetrometer values were analized. Additionally counts of total bacteria and sensory properties at the 30th, 60th, 90th days of storage were determined. During ripening period; salt, total nitrogen and penetrometer values of cheeses increased, the other properties remained nearly unchanged. In sensory evaluation total organoleptic scores increased at the and of the storage. But it was found that, there were no significant differences between control cheese and GDL treated chesees. Furthermore addition of GDL decreased the counts of total bacteria of cheeses during storage.

Key Words: Starter culture, Glucono Delta Lactone, white pickled cheese

top

2000, 6 (2) 22-29
Evapotranspiration of Apple Trees for Different Irrigation Methods
(Turkish)

A.İlhami KÖKSAL1, Osman YILDIRIM2, Hatice DUMANOĞLU1, Abdullah KADAYIFÇI3 and Nurdan GÜNEŞ1
1 Ankara University, Faculty of Agriculture, Department of Horticulture-Ankara
2 Ankara University, Faculty of Agriculture, Department of Farm Structures and Irrigation - Ankara
3 Süleyman Demirel University, Teknik Eğitim Fak. Yapı Bölümü - Isparta

In this study, Starkspur Golden Delicious apple trees, in the apple orchard of the Research and Application Farm of Agricultural Faculty, University of Ankara, were irrigated by drip, under-tree micro sprinkler, and surface methods during the years between 1993 and 1995. The decade evapotranspiration values were measured and these values were compared with the values calculated by some estimating methods of evapotranspiration. As a result, the measured evapotranspiration values were lower 17.2-29.9 % (avg. 23 %) in drip irrigation and 8.0-18.1 % (avg. 13 %) in under-tree micro sprinkler irrigation than those in surface irrigation. Radiation (FAO) method gave more suitable estimation of evapotranspiration. Hargreaves method was suggested to calculate evapotranspiration when solar radiation data were not available. Crop coefficients for these estimation methods were given.

Key Words : Apple trees, drip irrigation, under-tree micro sprinkler irrigation, surface irrigation, evapotranspiration

top

2000, 6 (2) 30-34
Effect of Nitrogenous and Phosphorous Fertilization on Leaf Mineral Composition and Growth of Apple Trees
(Turkish)

Mehmet Ali BOZKURT, Kerim Mesut ÇİMRİN and Füsun GÜLSER
Yüzüncü Yıl University, Faculty of, Agriculture, Department of Soil Science-Van

Effect of different nitrogenous and phosphorous fertilizer doses was investigated on the leaf nutrient concent, shoot growth and fruit size of Starking apple. Leaf N and Cu Concentrations and shoot growth were increased by nitrogenous fertilizer. Although leaf P, Mg, Fe and Mn concentrations and fruit weight were increased slightly with nitrogen fertilizer, these effects were not found significantly. Trees fertilized with phosphorus resulted in the higher leaf P and Fe Concentration. There was no effect of phosphorous fertilization on leaf N, K, Ca, Mg, Cu, Zn and Mn concentrations, and shoot growth and fruit size.

Key Words: Apple, fertilizer, nitrogen, phosphorus, nutrient content, growth

top

2000, 6 (2) 35-37
Colors Obtained From Thyme Plant and A Research on Some Fastness Values of Its Colors
(Turkish)

Sema ETİKAN1, Nuran KAYABAŞI1 and Süleyman KIZIL2
1 Ankara University, College of Home Economics - Ankara
2 Dicle University, Faculty of Agriculture, Department of Agronomy-Diyarbakır

In this research totaly 21 dyeing processes were performed with mordant and without mordant by using thyme plant. Mordants have used at the ratio % 3 and % 5 according to wool carpet yarns. The colours which were obtained from this plant were beige, green and brown and fastness to light were found 4 to 7, to abrasion 2 to 3-4, to wet water spotting 4 to 5, to dry water spotting 5.

Key words: Thyme plant, colour fastness to light colour fastness to abrasion, colour fastness to water spotting.

top

2000, 6 (2) 38-44
The Effects of Different Storage Methods on Carrot Cost in Beypazarı District
(Turkish)

F. Füsun TATLIDİL
Ankara University, Department of Agricultural Economics-Ankara

The purpose of this research is to determine the usage level of physical production inputs (labour, machinery and materials) and one kilo of carrot cost by three different conservation methods. The research is carried out in Beypazarı district of Ankara province during the production season of 1995-1996. According to the research findings; 316,61 hours of labour, 47,13 hours of machine power is needed on the farms leaving their carrot in the field. The average yield is 42 930 kilos per hectare and average cost is 689 970 150 Turkish Liras per hectare. The cost of one kilo of carrot is estimated as 16 072 Turkish Liras. The farms conversing their carrot under the soil required 383,16 hours of labour, 63,30 hours of machine power. The average yield is 50 220 kilos per hectare, the average cost is 758 232 000 Turkish Liras per hectare and 15.098 Turkish Liras per kilo on these farms. 300,70 hours of labour and 39.71 hours of machine power is need on the farms conserving their carrot in refrigerator store. The cost of carrot is 699 486 320 Turkish Liras per hectare and 15 496 Turkish Liras per kilo in this group. The average yield is estimated as 45 140 kilos per hectare among these farms.

Key Words: Carrot, production costs

top

2000, 6 (2) 45-47
Investigations on Pathogenicity of Macrophomina phaseolina ( Tassi ) Goidanich on Melon
(Turkish)

Kudret ERZURUM
Ankara University, Faculty of Agriculture, Department of Plant Protection-Ankara

Pathogenicities of 26 isolates of 51 Macrophomina phaseolina isolates obtained from wilted and withered plants collected from Ankara, Çankırı, Kırıkkale and Yozgat provinces were tested. In the pathogenicity tests; corn meal-sand cultures of the pathogen was prepared and 5 % from this inoculum was incorporated to the soil mixture and disease evaluation was made after 45 days from sowing. Different Macrophomina phaseolina isolates caused varying rates of disease between 3.5 % and 82 %. All the isolates tested caused streak shape dry, brown necroses on the stems of melon seedlings. On the diseased plants inoculated with the isolates of high virulance stem cracks appeared along these streaks and eventually the plants wilted and died.

Key Words : Melon, Macrophomina phaseolina, Pathogenicity

top

2000, 6 (2) 48-53
A Research on Some Wool Characteristics of Anatolian Merino Ewes
(Turkish)

Gürsel DELLAL1, Feryal SÖYLEMEZOĞLU, Sema ETIKAN2 and Zeynep ERDOĞAN2
Ankara University, Faculty of Agriculture Department of Animal Science
Ankara University, College of Home Economics-Ankara

In this research, some physical characteristich such as greasy fleece weight, clean fleece percentage, staple length, single nature fiber length, single true fibre length, first nature fibre length after single true fibre length, number of folds, number of fold at 2.54 cm, crimp depth, crimp width, breaking strength, elongation, fibre diameter, fibre types and rates, quality number and uniformity were studied on wool from Anatolian Merino ewes. According to findings, it was concluded that the important part of wool from two-aged Anatolian Merino ewes could be used in the fabric industry.

Key Words: sheep, Anatolian Merino, wool characteristics.

top

2000, 6 (2) 54-58
The Use of Bark as Potting Medium for Growing of Begonia (Begonia semperflorens) Plant
(Turkish)

Cihat KÜTÜK and Gökhan ÇAYCI
Ankara University, Faculty of Agricultur, Department of Soil Science-Ankara

In this research, using possibilities of bark as potting medium was investigated with growing of begonia (Begonia semperflorens) plant. Seven different media prepared from bark, peat and pumice were tested. In the experiment, decomposed bark was used because of avoiding of possibly negative effects of organic toxins in the raw bark. At first, the physical and chemical properties of mixtures as plant growing medium were determined. When we take into consideration the physical properties of mixtures including 50 % bark + 50 % peat, 25 % bark + 75 % peat, 50 % bark + 25 % peat + 25 % pumice and 25 % bark + 50 % peat + 25 % pumice were determined as more suitable media than the others. As we examine, horticultural parameters belonging to begonia plant the medium containing 25 % bark + 50 % peat + 25 pumice was found the most appropriate medium which was followed by the medium of 25 % bark + 75 % peat. While the nitrogen, potassium, calcium, iron and manganese contents of plants grown in media were found statistically significant, the phosphorus, magnesium, zinc and copper contents of plants were not significant. As a result of the experiment, it was determined that some problems may be resulted from the nature of bark or decomposition processes therefore, there is need more detailed investigations for bark using as potting medium.

Key Words: Bark, potting media, peat, pumice, begonia (Begonia semperflorens), plant nutrients

top

2000, 6 (2) 59-64
A New Species of Entomopathogen Nematode for Turkey Heterorhabditis marelatus Liu and Berry, 1996 (Rhabditida: Heterorhabditidae)
(Turkish)

İlker KEPENEKCİ1 and İ. Alper SUSURLUK2
1 Zirai Mücadele Merkez Araştırma Enstitüsü-Ankara
2 Ankara University, Faculty of Agriculture, Department of Plant Protection-Ankara

The species of Steinernema, Neosteinernema (Rhabditida: Steinernematidae) and Heterorhabditis (Rhabditida: Heterorhabditidae) have more important role than the other nematod groups in biological control of the insect pests. In this study, Heterorhabditis marelatus Liu and Berry 1996 (Rhabditida: Heterorhabditidae) was found from the soil of Agriculture Faculty Campus Areas of Ankara University. The morphological and morphometric characteristics of male and infective larvae of this species and life cycle of H. marelatus were determined and compared with original description (type strain). In addition, its distribution area and host were given according to the literature. H. marelatus is a new record for nematoda fauna of Turkey.

Key Words: Entomopathogenic nematodes, Heterorhabditis marelatus , soil, Ankara

top

2000, 6 (2) 65-75
The Effects of Nitrogen and Phosphorous on Contents of Some Macro and Micro Nutrients in Barley Grain
(Turkish)

Fahri SÖNMEZ1 and Nuri YILMAZ2
1Gaziosmanpaşa University, Faculty of Agriculture, Department of Agronomy-Tokat
2 Karadeniz Technical University, Faculty of Agriculture, Department of Agronomy-Ordu

This research was conducted to determine effects of nitrogen (0, 4, 8 ve 12 kg N/da) and phosphorus (0, 4 ve 8 kg P2O5/da) on contents of some macro and micro nutrients ( N, P, K, Ca, Mg, Cu, Zn, Fe, and Mn) in barley grain and on N, P, K, Ca, Mg, Cu, Zn, Fe, and Mn uptake by grain in 1993-94 and 1994-95 under Van conditions. According to result of the researach, it was found that the effects of nitrogen on N, P, K, Ca, Cu, Zn, Fe,and Mn in grain of barley was significant. Nitrogen fertilizer increased N level in grain, but it decreased other mineral levels in grain. The effect of phosphorus on P, K, Ca, Cu (1994), Zn, Fe (1994), and Mn (1995) was also significiant and applicated phosphorus fertilizer increased P and Mn (1995) level in grain while it decreased K level (in 1995) and Ca level (1994), Cu, Zn, Fe. Mg wasn't affected from phosphorus fertilizer. Applicated nitrogen increased N, P, K, Ca, Mg, Cu, Zn, Fe, and Mn uptake by grain of barley while phosphorus fertilizer increased N, P, K (1995), Ca, Mg, Cu (1994), Zn (1994) ve Mn (1995) uptake by grain of barley. Fe uptake wasn't affected from applicated phosphorus.

Key Words: Barley, grain, fertilization, macro and micro elements

top

2000, 6 (2) 76-81
Use of Factor Analysis in the Assessment of Soil Variability for Site Specific Management and Soil Fertility Studies
(Turkish)

Sabit ERŞAHİN and M. R. KARAMAN
Gaziosmanpaşa University, Faculty of Agriculture, Department of Soil Science-Tokat

Soil variability is an important factor which should be considered in soil management. This study aimed to evaluate the use of factor analysis in the assessment of variability of topsoils (0-30 cm) and subsoils (30-60 cm) in a 8.5 ha field in the Kazova Plain of Tokat. Sand, silt, clay, plant available water, OM, plant available P, and CaCO3 contents; and bulk density, CEC, and pH values of the soils were included by the factor analyses which were separately conducted for topsoils and subsoils.For topsoils, six of ten variables (sand, silt, clay, plant available water content, CaCO3, and plant available P) loaded into four factors that accounted for 94.94% of the total variance in the population. For subsoils, six of ten variables (sand, silt, clay, plant available water, CaCO3, and available P) loaded into four factors, accounting for 92.80% of total variance. The results from the factor analyses for topsoils and subsoils were similar, indicating that the change in the soil properties, considered in the factor analysis, with depth was not significant. The results revealed that factor analysis could be a useful tool to evaluate the soil variability for the management purpose. The results further revealed that, of the soil properties included by the factor analysis, available phosphorus content and plant available water content were the most important soil properties to be considered in the site-specific soil management and soil fertility studies in the study area.

Key Words: factor analysis, soil variation, soil management, soil fertility

top

2000, 6 (2) 82-85
Correlations Between Type Traits, Live Weight and Milk Yield in Black Pied Cows and Possibilites of Using These in Selection
(Turkish)

Mustafa MİMARYAN1 and S.Metin YENER2
1 The University of Zanjan, Faculty of Agriculture, Zanjan-İran
2 Ankara University, Faculty of Agriculure, Department of Animal Science-Ankara

The animal material of this study was formed by 67 Black Pied cows at the dairy unit of Atatürk's Forest Farm. The relationships of Mature Equivalent (ME) milk yield with general appearance, dairy character, body capacity, mammary system, final score, body weight, height at withers and heart girth were studied. These relationships were analyzed with the methods of simple and within-sire phenotypic correlations and regressions. Positive and significant phenotypic correlations were found between ME milk yield and final score and categorical type traits. These correlations indicate that an increase in ME milk yield could be achieved through selections on any of the type traits studied. The positive and significant relationships, between the final score and the categorical type traits constituting it, show that an improvement could be seen in the categorical type traits by selection on final score. The phenotypic correlation obtained between ME milk yield and body weight was negative and this result could be due to higher milk yields of young cows compared to the mature cows. The following recommendations could be made. Type appraisal should be carried out on first-calf heifers in the milking herds of dairy farms; in the selection performed among these the final type scores should also be taken into consideration; type scores of cows should formally be recorded on their pedigrees.

Key Words: Black Pied cattle, type traits, body weight, milk yield, correlations

top

2000, 6 (2) 86-91
Some Slaughtering- Carcass Characteristics and Meat Composition of Akkeçi Male Goats
(Turkish)

Aşkın KOR and Mehmet ERTUĞRUL
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara

The aim of the study was to investigate slaughtering and carcass characteristics and meat composition 10 month old Akkeçi (White goat) male goats in as the goat herd of the Department of Animal Science of Agricultural Faculty of Ankara University. The slaughter weight, hot and chilled dressing percentage were found; 31.09±1.930 kg, 44.30±0.694 % and 42.23±0.793 %respectively. The ratios of the carcass parts in the left-half of carcass were found as follows: hind-leg 30.26±0.418 %, neck 12.57±0.843 %, fore-leg (shoulder) 21.60±0.473 %, flank 11.74±0.359 % and back-loin 21.27±0.636 %. The physical dissection of tissues were done on all of the carcass parts. The highest portion of lean was determined in hind-leg then fore-leg, back-loin, neck and flank followed it. The arrenged of the carcass parts for the fat proportion from high to low were flank, fore-leg, back-loin, hind-leg and neck. The values for the part between 6-12nd ribs (rack) were 57.43±1.060 % for muscle, 27.64±1.590 % for bone, 7.14±0.639 % for subcutaneous fat and 5.74±0.906 % for inter muscular fat. Crude protein 17.67±0.198 %, crude fat 12.02±0.677 %, water 68.15±0.535 % and crude ash 1.16±0.030 % were found in the rack excluding bone tissue. In addition the attached water was determined 79.45±0.902 % in musculus. longissimus dorsi muscle.

Key Words: Akkeçi (White goat), carcass characteristics, meat composition.

top

2000, 6 (2) 92-97
The Table Values for the Significance Test of Intra-Class Correlation Coefficient
(Turkish)

Ensar BAŞPINAR and Fikret GÜRBÜZ
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara

The table for the significance test of intra-class correlation coefficient was purposed in this study. For this, the simulation technique was used. The intra-class correlation coefficients were calculated at the end of the one hundred thousand simulation experiments and then the shape of the distribution these values was looked. The distributions of the intra-class correlation coefficients were obtained from the samples taken randomly from the populations which have the various inter-class correlation structure and the various number of groups and sample sizes and were determined the beginning of the greatest 5% point of these distributions. This value was accepted critical value of the intra-class correlation coefficients at the a=0.05 probability level.

Key Words: Intra-class correlation, repeatability, hypothesis test, sampling distributions

top

2000, 6 (2) 98-106
The Usage of Correspondence Analysis Technique at the Contingency Tables
(Turkish)

Ensar BAŞPINAR and Mehmet MENDEŞ
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara

In this study the Correspondence Analysis is handled as an alternative technique to c2-test, G-Statistics and Z-test for proportions in analysis of contingency tables. The application stages of Correspondence analysis are explained step by step and advantages and disadvantages are determined with respect of the other techniques. The application stages were given in an example contingency table. As a result, the usage of this technique was more suitable than the other techniques given.

Key Words: Correspondence analysis, categorical data, contingency table, c2-test, G-statistics


top

2000, 6 (2) 107-110
Effects of Short Storage Periods and Flock Ages on Hatchability of Broiler Breeder Eggs
(Turkish)

Okan ELİBOL and Mesut TÜRKOĞLU
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara

An experiment was conducted to determine how hatching performance is affected by breeder age during short term storage( 0, 1, 2, 3 days). The trial involved a total of 42900 hatching eggs from six commercial broiler breeder flocks of the same strain but of different ages. As the differences of flock ages, the flocks were divided mainly three groups which are young(29-36th wks), middle(46-49th wks) and old (52-66th wks). Early and late embryonic mortality, second quality chick and hatchability were affected by storage length and flock age(P<0.05). This data suggests that for optimum hatchability, eggs from older hens should be set as soon as as possible, while limited storage could be acceptable for eggs from younger breeders.

Key Words: Egg storage period, broiler breeder, hatchability

top

2000, 6 (2) 111-118
Grouping Hand Woven Carpet Types With Discrimant Analysis Technique to Technolocical Properties
(Turkish)

F.Nurhan ÖLMEZ1 and Arzu KANIK2
Ankara University, College of Home Economics-Ankara
Mersin University,

In this study, it was aimed that 6 type hand woven carpet in Niğde province, outside of motif and design compared to some technological properties b using Discrimant analysis the state of discriminating various original ypes were determined and with hand woven carpet example the usage of Discriminant analysis technique applied to carpet types woven in Niğde region in almost all carpet types correct classificaion probability were found as average 100%.

Key Words: Niğde, hand woven carpert, handicrafts, discriminant analysis

top

2000, 6 (2) 119-122
Effect of Salt Stress on Growth and Mineral Elements Concentrations in Shoot and Root of Maize Plant
(English)

Süleyman TABAN1 and Vahap KATKAT2
1Ankara University, Faculty of Agriculture, Department of Soil Science-Ankara
2Uludağ University, Faculty of Agriculture, Department of Soil Science-Bursa

Effect of soil applied NaCl on shoot and root growth and Na, Cl, N, P, K, Ca, Mg, Fe, Zn and Mn concentrations in shoot and root of the maize plant (Zea mays L. cv: RX 947) was investigated. The experiment was arranged in a completely randomized design with four replications under the greenhouse condition. The experimental soil was salinized with NaCl at the rates of 0, 15, 30, 45 and 60 mM kg-1 NaCl. Shoot and root growth of the maize plants was inhibited by salinity. Increasing amount of NaCl application decreased the dry weight of shoot and root. Na, Cl and P concentrations in the shoot and root increased with increasing amount of NaCl. While applied NaCl caused to decrease N, Ca and Fe concentrations in the shoot, to increase N, Ca, Mg and Fe concentrations in the root. Zn and Mn concentrations in the shoot and root were increased due to increasing amount of NaCl. Na, P, Mg, Fe, Zn and Mn accumulated in the root in according with applied NaCl.

Key Words: Maize, salt, growth of shoot and root, mineral elements, salt stress

top

2000, 6 (2) 123-127
The Determination of Some Aerodynamic Properties of Screens to be Used in Airflow-Systems
(Turkish)

Kamil SAÇILIK and Ramazan ÖZTÜRK
Ankara University, Faculty of Agriculture, Department of Agricultural Machinery-Ankara

In this research, it has been determined some aerodynamic properties of several agricultural screens to be used in wind pressure systems. For this reason, a measuring unit was constructed. 32 agricultural screens at 5 different group have been compared in experiments. Tests have been occurred at four different airflow velocities. By measuring static and dynamic pressure, it has been determined pressure drop and coefficient of drag taken place in airflow-system. As airflow velocities were changed, various relationship between pressure drop and coefficient drag was studied.

Key Words : Screens, pressure drop, aerodynamic properties, coefficient of drag

top