2000, Volume: 6, Number: 4
Contents
 
YILMAZ, İ. and A. KAYGISIZ, Lactation Curve Traits of Holstein Cattle's Abstract
TOGAY, N. and M. ENGİN, Effects of Row Spacings and Broadcasting on Yield and Yield Components of Lentil (Lens culinaris Medic) Varieties in Van Conditio Abstract
ATAY, D., S. BEKCAN, M. ÖLMEZ and H. H. ATAR, The Effect of Different Heas Shock on the Early Life Stages of Gynogenetic Rainbow Trout (Oncorhynchus mykiss, Walbaum) Abstract
DURSUN, İ. G. and E. DURSUN, The Determination of the Seed Distribution in Row for Seed Drill by Using Image Processing Abstract
ADAK, M. S. and M. A. BİRSİN, Determination Some Quality Components and Yield of Gerek-79 Wheat Variety Grown with Different Soil Tillage Methods and Rotation Systems Abstract
BOZKURT, M. Ali., İ. ERDAL, K. M. ÇİMRİN, S. KARACA and M. SAĞLAM, The Effect of Municipal Sewage Sludge and Humic Acid Applications on Nutrient and Heavy Metal Concentrations of Corn Abstract
GÜNEŞ, A, Boron Uptake in Bread (T.aestivum) and Durum (T.durum) Wheat Genotypes in Relation to Phosphorus Nutrition Abstract
ALPASLAN, M, The Effect of Urea Application on the Urease Activity, Nitrate and Ammonium Transformations in Soils Abstract
BAŞPINAR, E. and F. GÜRBÜZ, The Realized Type I Error and Power of Test in Comparison of Samples Taken From Equal and Unequal Population Variances With Trimmed,t Test Abstract

GÜLER, M, Effect of Ethephon on Grain Yield, Protein Content and Protein Yield of Durum Wheat (Triticum durum Desf.) Abstract

GÜRHAN, R., M. VATANDAŞ and M. ÇETİN Determining the Elasticity Characteristics of Different Teatcup Liner Available in Milking Machine Abstract
SAYAN, M. S. and Y. ÖZTAN, Problems Arising in the Physical Planning Process on Seaside Resorts in the Antalya Province and Suggestions Abstract
ÖZTÜRK, R, Mathematically Modelling of Pressure Drops in Bed Depth for Some Maize Varieties Abstract
HOSSEINI, S. and S. USTA, Iodine Status of Common Soil Groups and Surface Water Resources of Kastamonu-Azdavay Region Abstract
KOÇAK, İ. and D. ERDOĞAN, Determining of Homegneity of the Feed Grade Mixture in Mixers with Palette and Auger Abstract
EMEKLİER. H. Y. and M. A. BİRSİN, Stability Analysis and Adaptation of Yield and Some Yield Components in Maize Abstract
BOZKURT, M. A., K. M. ÇİMRİN and S. KARACA, Evaluation of Nutrition Status of Three Apple Cultivars Grown Under Same Conditions Abstract
ÜLGENTÜRK, S. and S. TOROS, Preliminary Studies on Parasitoids and Predators of Diaspididae (Homoptera: Coccoidea) Species on Park Plants Abstract
SUSURLUK, İ. A. and M. E. ÖKTEN, Lethal Effects of Some Entomopathogenic Nematodes on Blattella germanica L. (Dictyoptera: Blattellidae) Abstract
ÖZÇELİK, F. and E. İÇ, Effect of Some Storage Conditions on the Storage Ability of Cucumber Pickles in Low Salt Brine Abstract
ÇOLAK, Y. and R. ÖZTÜRK, Design of the Carrot Sorting Machine Abstract
DELLAL, G, Some Structural Characteristics of Hair Goat Rearing in Antalya Province. II. Some Reproductive Traits, Managements of Milking and Shearing Period Abstract
DELLAL, G., A. ELİÇİN, A. M. TATAR and E. EMSEN, Some Wool Characteristics of Border Leicester (BL) x Booroola (Bo) x Australian Merino (AM) Crossbred Ewes Abstract
ZORAKİ, M. and A. İ. ACAR, Optimum Design of Cup Shape Used in Full Automatic Potato Planter Abstract
Abstracts
 

2000, 6 (4) 1-10
Lactation Curve Traits of Holstein Cattle's
(Turkish)

İsa YILMAZ1, and Ali KAYGISIZ2
Tarım İl Müdürlüğü-Ağrı
Kahmaramanmaraş Sütcü İmam University, Faculty of Agriculture, Department of Animal Science-Kahramanmaraş

In this study, lactation curves traits of Holstein cows raised at the Reyhanlı State Farm were determined. The shape and type of lactation curves were described by the parameters of Gamma function of Yt = Atb e-ct The 31.2 % percent of lactation curve were atypical. The distribution of typical and atypical lactation curves were depended upon the calving season (P<0.05), and were highly significant (P<0.01) depended upon the lactation number. Effect of calving year on LnA, b persistency (S), Tmax and Ymax were significant (P<0.05) or highly significant (P0.01). Eeffect of calving season on all lactation curve parameters were sifnificant (P<0.05). Effect of calving number on LnA c and Y max were significant (P0.01) or highly signifcant (P<0.01). The heritabilities and repeatabilities with standard errors of parameters of lactation curve were estimates as follows, for A parameters 0.000+0.056 and 0.030+0.037 for B parameters 0.000+0.056 and 0.041+0.038, for C parameters 0.046+0.083 and 0.183+0.041, for S parameters 0.0000+0.056 and 0.006+0.045, for 305 days Milk Yield 0.198+0.151 and 0.192+0.041, for lactation length 0.000+0.056 and 0.051+0.038, for Ymax 0.055+0.087 and 0.035+0.032, for Tmax 0.017+0.066 and 0.116+0.057, respectively.
Key words: Lactation Curve, Lactation persistency, Holstein cattle

top

2000, 6 (4) 11-15
Effects of Row Spacings and Broadcasting on Yield and Yield Components of Lentil (Lens culinaris Medic) Varieties in Van Conditions
(Turkish)

Necat TOGAY and Müjgan ENGİN
Yüzüncü Yıl University, Faculty of Agriculture, Department of Agronomy-Van

The research was conducted during 1995-96 winter season on three varieties (Kışlık Kırmızı-51, Fırat-87 and Yerli Kırmızı), broadcasting and different four row spacings (15, 20, 30 and 30 cm) in Van ecological condition. Th highest grain yield was obtained from Kışlık Kırmızı-51 variety and 15 cm row spacing in both years. It was obtained reverse relationship between grain yield and row spıagns. When. the row spacings was increasing, the grain yield reduced and protein ratio and 1000 grain weight was not effected from broadcasting and row spacings. In the study, while the least first pod height value (13.31 cm) was obtained in broadcasting (10.79 cm), the highest first pod height value was found in 15 cm row spacing. It was determined that while row spacigs was reducing, fist pod height increased in all varieties. According to result of this study, row spacing should not be more than 15-20 cm for the highest grain yield in Van conditions.

Key Words : Lentil (Lens culinaris Medic), broadcasting, row spacing,yield and yield components

top

2000, 6 (4) 16-20
The Effect of Different Heas Shock on the Early Life Stages of Gynogenetic Rainbow Trout (Oncorhynchus mykiss, Walbaum)
(Turkish)

Doğan ATAY, Süleyman BEKCAN, Murtaza ÖLMEZ and Hasan H.ATAR
Ankara University, Faculty of Agriculture, Department of Fisheries and Aguaculture-Ankara

In this research, different heat shocks (26, 29 and 31 oC) applied 300, 320 and 330 min after insemination for 5 min duration to eggs fertilized by genetically inactivated sperm to produce gynogenetic rainbow trout (O.mykiss). The best result regarding eyed eggs, yolk-sac larvae, feed started fry were obtained at 300 min after insemination and 29 oC heat as 62.83 %, 35.48 % and 29.73 %, respectively. In contrast, the lowest result were obtained at 300 min after insemination and 31 oC heat as heat as 1.44%, 0.31% and 0.0%, respectively (P<0.05). Same data in control groups were as 82.74-88.31%, 73.32-75.71%, 62.68-67.26% respectively and better than all other treatments and the differences were statistically (P<0,05).

Key Words: Rainbow trout, (0.mykiss), gynogenesis, heat shocks, inactive sperm, hatching


top

2002, 6 (4) 21-28
The Determination of the Seed Distribution in Row for Seed Drill by Using Image Processing
(Turkish)

İlknur Göknur DURSUN and Ergin DURSUN
Ankara University, Faculty of Agriculture, Department of Agricultural Machinery-Ankara

One of the Important functional characteristics expected from seed drills is a uniform distribution of seed in row. So, the determination of the uniformity of seed distribution in row is required in sowing by seed drrills. The determination of the uniformity of seed distribution in row by using sticky bant system is the most widespread method in the laboratory. However, measurement of the distances between individual seeds by hand is difficult and takes a long time. The uniformity of seed distribution in row can also be determined by using electronic measuring systems. The purpose of this study is to determine of the seed distribution in row by using image processing which is widely used for various applications. For this purpose, samples with different spaced seeds were prepared by using wheat, corn, tomato, vetch, carrot and sugar beet seeds.The images of this samples were displayed on the computer screen and analyzed by using image processing sofware. Research results showed that relationship between the seed dirstributions in row measured by hand and obtained from image processing were significant at a level of P<0.01 Correlation coefficients changed from 0,925 to 1,000 depend on seed variety.

Key Words: Seed drill, the seed distribution in row, image processing

 

top

2000, 6 (4) 29-34
Determination Some Quality Components and Yield of Gerek-79 Wheat Variety Grown with Different Soil Tillage Methods and Rotation Systems
(Turkish)

M.Sait ADAK and Melahat AVCI BİRSİN
Ankara University Faculty of Agricultural Department of Agronomy-Ankara

The research was carried out between 1996-1998 years under Haymana-Ankara dryfarming conditions. The aim of the study was to determine some quality compenents and grain yield of Gerek-79 bread wheat variety which is growth under different soil tilhlage, and with fallow and without fallow. According to obtained results, the effect of different soil tillage with rototiller or phough were not evident on the quality components of wheat. Some situation plots of plough and some situation plots of rototiller were shown superior values. Even the, protein content of wheat after lentil was found higher than the other to rotation (fallow-wheat, wheat-wheat) in the both two years. Grain yield, thousand kernel weight and hectolitre weight in wheat have been obtained higher after fallow, Wheat-wheat rotation system was behind both rotation systems fallow-wheat and lentil-wheat in term of these traits. It could be concluded that according to these results for more suitable and economic seedbed preparation soil tillage with rototiller, and lentil-wheat rotation system among the studied systems might be recommended.

Key Words: Wheat, fallow, tillage, rotation systems, quality components


top

2000, 6 (4) 35-43
The Effect of Municipal Sewage Sludge and Humic Acid Applications on Nutrient and Heavy Metal Concentrations of Corn
(Turkish)

Mehmet Ali BOZKURT, İbrahim ERDAL, Kerim Mesut ÇİMRİN, Siyami KARACA and Mustafa SAĞLAM
Yüzüncü Yıl University, Faculty of Agriculture, Deparmtment of Soil Science-Van

A study was conducted to determine the effets of sewage sludge and humic acid applications on the growth, nutrient and heavy metal concentrations of com grown on alkaline soils. The increasing concentrations of sewage sludge (0,%5, %10, %20 and %30) increased significantly shoot dry weight and root dry weight and N, P, Ca, Mg, Fe, Mn, Zn, Cu and Co concentrations of shoot, Nitrogen and phosphorus requirement of plant may be covered by sewage sludge without using fertilizers. Applications of sewage sludge affected significantly pH, available P, total Ca, Zn, Cu concentrations of soil and extractable Fe, Mn, Zn, Cu contents with DTPA. A slight decrease in Co, Ni, Cr, Cd concentrations of plant and considerable decrease in extractable Cu content with DTPA of soil were observed by adding humic acid in soils given sewage sludge. Heavy metal toxicity wasn't observed on studied sewage sludge doses and investigated heavy metals except in soil Zn.

Key Words: Sewage sludge, fertilizer, heavy metals, humic acid, corn

 

top

2000, 6 (4) 44-48
Boron Uptake in Bread (T.aestivum) and Durum (T.durum) Wheat Genotypes in Relation to Phosphorus Nutrition
(Turkish)

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

The effects of phosphorus (P) on the uptake of boron (B) was examined in 27 wheat (17) bread and 10 durum) genotypes in greenhouse experiment. Phosphorus was applied at 20 and 80 mg kg-1 levels. The B content of all genotypes was decreased by application of P. Boron contents of bread wheat genotypes was decreased by application of P at level of 24%. However, boron contents of durum wheat genotypes was decreased by application of P at level of 11%. This experiment shows that ratio of P/B of bread wheat genotypes was lower than that of durum wheat genotypes. Boron contents of durum wheat genotypes was found to be higher than bread wheat genotypes at the low and high level phosphorus.

Key Words: Wheat genotypes, P supply, B uptake, B content


top

2000, 6 (4) 49-56
The Effect of Urea Application on the Urease Activity, Nitrate and Ammonium Transformations in Soils
(Turkish)

Mehmet ALPASLAN
Ankara University, Faclty of Agricultre, Departmant of Soil Science-Ankara

In this research, 30 different soils in respect to their physical and chemical properties of 9 different great soil group from Konya and Niğde interior basin were used. 500 ppm N as urea was applied to the soil samples, and then soils were incubated 28 days. Soil samples were teken, through the experiment 0, 7, 14 and 28 days of incubation and ammonium-N, nitrate-N and urease activity were determined. Nitrofen transformations from urea were calculated by determining the subsequent amount of soil mineral nitrogen at the and of the experiment..Ammonium-N of the soils increased during the experiment up to 14th days of the experiment and but decreased 28th days. Nitrate-N of the soils increased in general during the experiment. Urease activity was changed according to the properties of the research soil. Nitrogen loss from the soil samples negatively correlated with silt, lime, organic matter and total-N (r=0.736***, r=-0.377*, r=0.565** and r=0.617***, respectively). However, positive correlation was found between N loss and amount of sand, r=0.754***.

Key Words: Urea, nitrogen transformation, soil properties


top

2000, 6 (4) 57-60
The Realized Type I Error and Power of Test in Comparison of Samples Taken From Equal and Unequal Population Variances With Trimmed,t Test
(Turkish)

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

In this study, the efficiency of Trimmed-t Test was examined to compare the samples of varying sizes taken from populations with equal and unegual variances which were trimmed at different rates. The results of 10000 simulation test show that Trimmed-t Test would be used confidentially if the samples are equal in size and the population variance is not known and/or it is not homogenous.

Key Words: Trimmed-t test, winsorized mean, comparison of means, Type I error, power of test


top

2000, 6 (4) 61-66
Effect of Ethephon on Grain Yield, Protein Content and Protein Yield of Durum Wheat (Triticum durum Desf.)
(Turkish)

Mustafa GÜLER
Ankara University, Faculty of Agriculture, Department of Agronomy-Ankara

This study was conducted at the Experimental Field of the Department of Field Crops, Faculty of Agriculture, University of Ankara between the years 1997-1999 in order to determine the effects of various ethephon doses on grain yield, protein content and protein yield of durum wheat (Triticum durum Desf.) cultivars. In this study Kunduru 1149, Çakmak 79, Kızıltan 91 and Çeşit 1252 cultivars of durum wheat were used, and 0,200, 400 and 600 g/ha ethephon doses were applied before heading. According to the results of the research; significant differences were determined with the application of various doses of ethephon on four durum wheat cultivars in regard to grain yield and protein yield. On the other hand, the differences among ethephon applications were non-significant in regard to grain protein content. The highest grain yield was observed at 600 g/ha dose of ethephon and cv. Kunduru 1149. And also the highest protein yields were generally determined at 400 g/ha and 600 g/ha ethephon doses and cv. Kunduru 1149.

Key Words: Durum wheat, ethephon, grain yield

top

2000, 6 (4) 67-70
Determining the Elasticity Characteristics of Different Teatcup Liner Available in Milking Machine
(Turkish)

Recai GÜRHAN, Mustafa VATANDAŞ and Mustafa ÇETİN
Ankara University, Faculty of Agriculture, Department of Agricultural Machinery-Ankara

In this study, vacuum affected behaviours of different teatcup liners available in milking machine were tested. Curves indicating strain behaviours as well as massage and milking phase in two circular and one triangular cross-sectioned teatcup liner were obtained in the experiments. Eventually, it was found that the curve characteritics were dependent upon the formation of liner.

Key Words: Milking machine, teatcup, teatcup liner


top

2000, 6 (4) 71-80
Problems Arising in the Physical Planning Process on Seaside Resorts in the Antalya Province and Suggestions
(Turkish)

M.Selçuk SAYAN1 and Yüksel ÖZTAN2
Akdeniz University, Department of Landscape Architecture -Antalya
Ankara University, Department of Landscape Architecture-Ankara

In this research, 44 seaside resort hotels and vacation villages located on the Antalya coastline were investigated and some problems were determined in the planning, design, construction, management and maintenance phases from landscape architecture viewpoint. These problems were classified into six groups and some suggestions were given for each group. Physical Planning problems arise in the transformation period of a natural land into tourist resort and afterwards in the existence period. It is determined that most problems (%52.27) occur in the soft landscaping application period. As a result, landscape architecture has great influence in the integration of man-made environment into natural environment and problems decrease as the importance paid for landscape architecture process increases.

Key Words: Tourist resort, landscape design, planning, problems, process


top

2000, 6 (4) 81-86
Mathematically Modelling of Pressure Drops in Bed Depth for Some Maize Varieties
(Turkish)

Ramazan ÖZTÜRK
Ankara University, Department of Department of Agricultural Machinery-Ankara

The relationship between pressure drop and airflow rate in agricultural crop plays important role in desing of aeration and drying systems. In this study, pressure drops of two maize varieties plantes as second crop in Turkey have been determined in measuring unit and it has been shown sensitivy analysis of three mathematical models. Besides, it has been developed non linear mathematical model by experiment results. Experiments were taken place at five airflow rates such as 0.012, 0.014, 0.016, 0.018 and 0.020 m3/s.m2. Moreover, 6 bed depth of which is 6 cm was chosen as test parameters.The effects of each crop, airflow rate and bed depth of 3 factors on pressure drop were found to be significant (p<0.01) in analysis of variances. The obtained results showed that if air velocity and bed depth increases, pressure drop wqill increase. This growth in cin maize is higher than şeker maize. Average standart deviation in devoloping mathematical model was found smaller than other three mathematical model.

Key Words: Agricultural product, airflow rate, pressure drop, mathematically model

 

top

2000, 6 (4) 87-91
Iodine Status of Common Soil Groups and Surface Water Resources of Kastamonu-Azdavay Region
(Turkish)

Sousan HOSSEINI1 and Sadik USTA2
Master of Science in Agricultural Engineering
Ankara University, Faculty of Agriculture, Department of Soil Science-Ankara

This research has been carried out to determine the amounts of lodine in water and soil, and the relationship between iodine and the main characteristics of water and soil resources, in the Kastamonu-Azdavay region where iodine deficiency disorders have been common. The amounts of iodine in all samples taken from drinking water sources were lower than the recommended standard level (ranging between 1.0-5.2 µg L-1). The amount of iodine range between 15-145 µg kg-1 in the soil. The results of the statistical analysis indicated that iodine in soils was dircetly correlated with bicarbonate and moisture contents whereas its correlation with the CI in the water samples was inverse. The results obtained have shown that the most important factors causing endemic goiter in the region, would be the lower amounts of iodine in the water and soil sources.

Key Words: Iodine, water, soil, goiter

 

top

2000, 6 (4) 92-94
Determining of Homogenity of the Feed Grade Mixture in Mixers with Palette and Auger
(Turkish)

İlhami KOÇAK1 and Doğan ERDOĞAN2
Beypiliç-Bolu
Ankara University, Department of Department of Agricultural Machinery-Ankara

The homogenity of the premix mixture in the horizontal (pallette and auger) mixers was studied in this survey. The feed additive its characteristics and mixer types discussed at first. In addition, researchs in this field was summerized. The trails with the palette and auger mixers were realized at a premix firm. Than samples were taken and analyzed in laboratory. The values of homogeneity were calculated and interpreted according to the results of the analysis. To suitable homogenity was reached shorter period with pallette mixer than auger mixer.

Key Words: Premix, mixture, homogeneity


top

2000, 6 (4) 95-100
Stability Analysis and Adaptation of Yield and Some Yield Components in Maize
(Turkish)

H.Yavuz EMEKLİER and Melahat AVCI BİRSİN
Ankara University, Faculty of Agriculture Department of Agronomy-Ankara

The research was conducted in Ankara environments in the fields of Atatürk Orman Çiftliği and Ankara University, Faculty of Agriculture, Research and Application Farm in the years of 1994 and 1995. The objective of this research was to determine adaptation and stability parameters of yield and yield components in maize cultivars. Mean value (X) regression coefficient (b), regression line intercept (a) and deviation from regression (S2 d) where used as adaptation and stability statistic. According to results, the yields of cultivars, P-3751, P-3394 and France were more adaptable and stable than the other genotypes. Stability and adaptability of genotypes as regards of other yield components were different than each others.

Key Words: Genotype x environment interaction, stability parameters, maize


top

2000, 6 (4) 101-105
Evaluation of Nutrition Status of Three Apple Cultivars Grown Under Same Conditions
(Turkish)

Mehmet Ali BOZKURT, Kerim Mesut ÇİMRİN and Siyami KARACA
Yüzüncü Yıl University, Faculty of Agriculture,Department of Agronomy-Van

This study was conducted to determine nutrition status in three apple varieties on Van Agricultural High School Apple Orchard 40 trees of Starking Delicious and Amasya varieties were used in this research. Leaf nutrient cüontents of three apple cultivars were analysed..Sufficient levels of nutrients and productivity of soil and apple trees were determined. According to results of physical and chemical analysis of soil, research area had loamy texture, slightly alkaline pH, moderately lime and excessive exchangeable K, Ca, Mg amounts. Organic matter and available P and Zn levels on research field were found low. On the other hand, Fe, Mn and Cu levels were found sufficient. Results of plant analysis showed that nitrogen and and zinc levels were insufficient, the amounts of P, K, Fe, Mn, Cu were sufficient, Ca and Mg amounts were excessive. Correlation between leaf nitrogen content and yield was important statistically.

Key Words: Fruit orchard, nutrition status, nutrient content

top

2000, 6 (4) 106-110
Preliminary Studies on Parasitoids and Predators of Diaspididae (Homoptera: Coccoidea) Species on Park Plants
(Turkish)

Selma ÜLGENTÜRK and Seval TOROS
Ankara University, Faculty of Agriculture, Department Plont Protection-Ankara

Seven predators and six parasitoids on eight harmful diaspidid species on park plants in Ankara Turkey were recorded. Coleopterous predators of armored scale insects on park plants were Adalia fasiatopunctata revelierei. (Mulsant), Chilocorus bipustulatus (L). Coccinella septempunctata L., Exochomus quadripustulatus (L.), Harmonia quadripunctata (Pontop), Synharmonia conglobata (L) (Coccinellidae) and Cybocephalus fodori minor cedricola Balachowsky et Alkan, Nuculaspis abietis (Schrank), Carulaspis Juniperi (Bouche), Pseudaulacaspis pentagona (Targioni-Tozzetti), Chionaspis sallicis (L), Salicicola africana (Newstead). Hymenopterous parasitoids of diaspidids were determined as Aphytis sp., Aspidiotiphagus citrinus (Craw.), Coccophagoides sp., Encarsia leucaspidis (Mercet), Phycus sp. (Aphelinidae), Anaphes sp (Mymaridae).

Key Words: Diaspidtidae, predators, parasitoids, park plants, Ankara, Turkey

 

top

2000, 6 (4) 111-114
Lethal Effects of Some Entomopathogenic Nematodes on Blattella germanica L. (Dictyoptera: Blattellidae)
(Turkish)

İ.Alper SUSURLUK and M.Emel ÖKTEN
Ankara University, Faculty of Agriculture Department of Plant Protection-Ankara

Entomopathogenic nematodes (EPNs) are among the most important biocontrol agents and their usage are increasing day by day. In this study, Heterorhabditis marelata Lui and Berry, 1996, H bacteriophora Poinar, .1976 and Steinemema feltiae (Filipjev, 1934) Wost, Mracek, Gerdin and Beedding 1982 were tasted at the dosages of 50, 75, 100, 125 number of infective juvenile/2 ml Ringer solution against Blettella germanica L. and lethal times in terms of both thetime for killing haif of the population and for killing the entire population were recorder. According to the results, the killing effect of the half of the population of S. feltiae and H. marelata were the similar, while H. bacteriophora was less effective than tested EPNs. The effectiveness of S. feltiae in terms of killing time for entire population was the highest. The objective of this study was to test applicability of EPNs against cockroach on the household pest.

Key Words: Entomopathogenic nematodes, Heterorhabditis spp., Steinememe spp., Blattella germanica, time dose


top

2000, 6 (4) 115-119

Effect of Some Storage Conditions on the Storage Ability of Cucumber Pickles in Low Salt Brine (Turkish)

Filiz ÖZÇELİK and Erhan İÇ
Ankara University, Faculty of Agriculture, Department of Food Engineering-Ankara

Fermented cucumbers in brines containing equilibrium concentrations of 3%, 4% NaCl and 0,0.25, 0.05 M Ca-acetate were stored under various storage conditions of temperature (4, 200C), storage time (3, 6 months), being pasteurized (70oC, 15 min) and .nonpasteurized. After 3 and 6 months storages, chemical and microbiological changes in brine were determined and cucumber firmness was also measured. It was observed that cucumber pickle stored in brine without Ca-acetate has lost the firmness (up to 37,93 %), while the addition of Ca-acetate has increased the firmness (up to 26.91 %). Pasteurization of pickle (700C, 15 min) inhibited the growth of lactic acid bacteria and yeast, and also, helped the maintenance of cucumber firmness. Results indicated that the concentrations of NaCl and calcium acetate in brine, obviously, affected the cucumber firmness. Thus, with he aid of some applications (such as adding Ca** to brine, providing anaerobic condition, low temperature of storage and pasteurization), the storage of cucumber pickle could be possible, even in low salt brine.

Key Words: Fermented cucumbers, calcium acetate, storage, firmness, pasteurization


top

2000, 6 (4) 120-123
Design of the Carrot Sorting Machine
(Turkish)

Yusuf ÇOLAK and Ramazan ÖZTÜRK
Ankara University, Department of Department of Agricultural Machinery-Ankara

In this study, carrot sorting machine is designed which contained sorting units with V belt and made its prototype. Experiment were made in order to determine sorting capacity and sensitivity of machine. Experiments was done with 20 - 40 feeding unit tilt angle and five different V belt velocity level. Results of experidements were analyzetd with statistical methods.

Key Words: Sorting systems, sorting, carrot sorting machine, quality of sorting, capacity


top

2000, 6 (4) 124-129
Some Structural Characteristics of Hair Goat Rearing in Antalya Province. II. Some Reproductive Traits, Managements of Milking and Shearing Period
(Turkish)

Gürsel DELLAL
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara

In this research, the characteristics with some reproductive traits, managements of milking and shearing period and problems appearing in rearing of the Hair goat farms inl district of Centre, Korkuteli, Elmalı, Kaş, Manavgat, Gündoğmuş and Gazipaşa.in the Antalya province were researched. According to findings of research, it was founded that first breeding age and duration of bereeding for male and female goats were 1.7+0.14, 2.0+0.16 years and 5.1+0.38, 6.38+0.42 years, respectively. The weainig age and milking duration were 2.5+0.25 and 3.8+0.51 mounth, respectively. The first shearing age was 1.3+0.09 year and shearing mainly was carried out on August.

Key Words: Antalya province, Hair goat rearing, stuctural characteristics

top
2000, 6 (4) 130-134
Some Wool Characteristics of Border Leicester (BL) x Booroola (Bo) x Australian Merina (AM) Crossbred Ewes
(Turkish)

Gürsel DELLAL1, Ayhan ELİÇİN1, Ali Murat TATAR2 and Ebru EMSEN3
Ankara University, Faculty of Agriculture, Department of Animal Science-Ankara
Ankara University, Faculty of Agriculture, Department of Animal Science-Diyarbakır
Ankara University, Faculty of Agriculture, Department of Animal Science-Erzurum

In this research, least-squares means for greasy fleece weight, clean fleece percentage, staple length, crimp numbers of staple, single real fibre lenght, first nature fibre length after single real fibre length, fibre diameter, rate of medulladet fibres of wool from Border Leicester (BL) x Booroola (F+) x Avustralian Merina (AM) (1/4 Bo) and Border Leicester (BL) x Booroola (Bo-**) x Avustralian Merina (AM) ewes were 2.5+1.3 kg, 82.5+0.15 ;% and 82.4+0.20%, 9.5+0.25 cm and 9,8+0.35 cm 6,7+0,38 piece and 6,5+0,53 piece, 10,7+0,38 cm and 11,1+0,53 cm, 15,2+0,42 cm and 15,6+0,59 cm, 28,9+0,72 mic. And 30,8+1,00 mic, 5+0,20 %, 3+0,28 % respectively. It was founded that there was a sgnificant (p<0,05) difference for only fibre diameter between genotypes groups.

Key Words: Border Leicester x Booroola (F+,++) x Australian Merino, wool chracteristics

top

2000, 6 (4) 135-140
Optimum Design of Cup Shape Used in Full Austomatic Potato Planter
(Turkish)

Macit ZORAKİ1 and Ali İhsan ACAR2
Master of Science in Agricultural Engineering
Ankara University, Department of Department of Agricultural Machinery-Ankara

In this study, according to the shapes of seeds the determination of teh optimum design of cup shape had been objectives. Cups were mounted on a chain whicih travelled vertically. Five different sizes and shapes of cup had been designed. In the tests, one potato seed two or more potato seed and missing seed in the cups had been observed. Results have been analysed by statistical methods and C-type cup was ideal type.

Key Words: Potato, full automatic potato planter, chain conveyor, cup design

top