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Full-Text Articles in Life Sciences

Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan Jan 2004

Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan

Turkish Journal of Agriculture and Forestry

Forage legumes are frequently established with a companion crop such as a cereal crop for controlling weed invasion and high hay production. This study was conducted under irrigated conditions in order to determine the effects of the seeding rate and harvest stage of barley as a companion crop on the hay yield and plant density of red clover and the botanical composition of hay. Red clover was established with barley sown at 0, 60, 120 and 180 kg ha^{-1} and cut at the milk-dough and hard-dough stages. The highest total hay yield (6000 kg ha^{-1}) was measured at a 180 …


Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek Jan 2004

Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek

Turkish Journal of Agriculture and Forestry

This study was conducted on the lentil cultivar Malazgirt 89 during 1999 and 2000 to determine the most appropriate method for controlling weeds. In the experiments, hand hoeing, trifluralin, imazethapyr, linuron, prometryn, phenmedipham + desmediphame, trifluralin + hand hoeing and linuron + hand hoeing which should be used as an alternative to hand weeding, were tested. The effects of herbicides on nodulation in lentils were also investigated. Centaurea depressa in the first year, and Ranunculus arvensis and Acroptilon repens in the second year were the dominant weed species encountered in the plots. A combination of linuron + hand hoeing, linuron …


In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas Jan 2004

In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas

Turkish Journal of Agriculture and Forestry

Several tannin-rich beverages were tested for their antibacterial activity against 2 important phytopathogenic bacteria, Erwinia amylovora and Curtobacterium flacumfaciensis subsp. poinsettiae. Black tea (9.5, 19 and 38 g l^{-1}), green tea (9.5, 19 and 38 g l^{-1}) and tannic acid (0.2, 0.4 and 0.8 g l^{-1}) inhibited the growth of E. amylovora and C. f. subsp. poinsettiae. Coffee (8.75, 17.5 and 35 g l^{-1}) and cocoa (8.75, 17.5 and 35 g l^{-1}) did not display any inhibitory effect on the growth of bacterial cultures. The numbers of colony forming units (CFUs) of E. amylovora in the presence of black tea, …


Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith Jan 2004

Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith

Turkish Journal of Agriculture and Forestry

Light Detection and Ranging (LIDAR) is a new technology that offers a potential alternative to field surveying and photogrammetric techniques for the collection of elevation data. It has the advantages of being rapid accurate and able to map areas that are difficult to access. LIDAR has demonstrated the capability to accurately estimate important vegetation structural characteristics such as forest canopy height. For these reasons, airborne LIDAR data were used to compare vegetation height determinations with field observations on one selected transect in the vicinity of Lake Hatchineha in Florida, USA. The approach was based on the LIDAR and field measurements. …


Effects Of Controlled Atmosphere Storage On Scald Development And Postharvest Physiology Of Granny Smith Apples, Mustafa Erkan, Mustafa Pekmezci̇, Hami̇de Gübbük, Işilay Karaşahi̇n Jan 2004

Effects Of Controlled Atmosphere Storage On Scald Development And Postharvest Physiology Of Granny Smith Apples, Mustafa Erkan, Mustafa Pekmezci̇, Hami̇de Gübbük, Işilay Karaşahi̇n

Turkish Journal of Agriculture and Forestry

The effects of different O2 and CO_2 concentrations on the scald development and postharvest physiology of Granny Smith apples (Malus domestica Borkh.) were investigated. Apples were harvested at optimal harvest time and stored in 1% CO_2/2% O_2, 2% CO_2/2% O_2, 3% CO_2/2% O_2 and 0% CO_2/21% O_2 (control) at 0 °C and 90-92% relative humidity for 9 months. At certain intervals, samples were collected from each storage condition for physical and chemical analysis (e.g. weight loss, flesh firmness, amount of titratable acid, total soluble solids, skin color, scald development, respiration rate and decayed fruit). Respiration rates of the apples were …


The Effect Of Ascorbic Acid On The Freezability Of Ram Semen Diluted With Extenders Containing Different Proportions Of Glycerol, Mustafa Sönmez, Eşref Demi̇rci̇ Jan 2004

The Effect Of Ascorbic Acid On The Freezability Of Ram Semen Diluted With Extenders Containing Different Proportions Of Glycerol, Mustafa Sönmez, Eşref Demi̇rci̇

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to investigate the effects of ascorbic acid on the freezability and spermatological characteristics of ram semen diluted with Tris-glucose-egg yolk based extenders containing different proportions of glycerol. Six Akkaraman rams were used. Semen was collected by electroejaculator once every 3 days. The spermatological characteristics of the collected semen samples were determined. Pooled and diluted semen was cooled slowly to + 4 ºC over 2 h. Cooled semen was divided into 20 groups. Each of the 20 semen groups was diluted at a 1:1 ratio with one of the extender groups containing different proportions of glycerol (0%, …


Slugs (Gastropoda: Pulmonata) Of The Lakes Region (Göller Bölgesi) In Turkey, M. Zeki̇ Yildirim, Ümi̇t Kebapçi Jan 2004

Slugs (Gastropoda: Pulmonata) Of The Lakes Region (Göller Bölgesi) In Turkey, M. Zeki̇ Yildirim, Ümi̇t Kebapçi

Turkish Journal of Zoology

Three families (Limacidae, Agriolimacidae and Milacidae) and 7 species, (Limacus flavus, Deroceras reticulatum, Deroceras berytensis, Mesolimax brauni, Mesolimax escherichi, Milax cf. altenai and Tandonia budapestensis) were identified from Lakes Region (Isparta, Burdur, and Afyon provinces). These include 1 endemic genus with 2 species. In this study some new habitat information and morphological data of the species are given. Additionally, Deroceras reticulatum, D. berytensis and Milax cf. altenai are new records for the area.


Zebra Mussel And Fouling Problems In The Euphrates Basin, Alaeddi̇n Bobat, Mehmet Oğuz Hengi̇rmen, Walter Zapletal Jan 2004

Zebra Mussel And Fouling Problems In The Euphrates Basin, Alaeddi̇n Bobat, Mehmet Oğuz Hengi̇rmen, Walter Zapletal

Turkish Journal of Zoology

The Zebra mussel, Dreissena polymorpha Pallas, is one of the most important fouling organisms in freshwater ecosystems. Infestations by Zebra mussels have caused chronic problems in both raw water(incoming water into facilities) intakes and man-made structures such as water treatment facilities, power plants and industrial facilities. In the mid-1980s, this pest, a species nonindigenous to North American freshwaters, was introduced into the Great Lakes of North America. This introduction probably occurred by means of the ballast water of a transoceanic ship, and concern has focused again on this nuisance and its impact. Recently, the Zebra mussel, a species native to …


Taxonomic Status And Distribution Of Apodemus Mystacinus (Danford And Alston, 1877) (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Reyhan Çolak, Mustafa Sözen, Şaki̇r Özkurt, Tolga Kankiliç Jan 2004

Taxonomic Status And Distribution Of Apodemus Mystacinus (Danford And Alston, 1877) (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Reyhan Çolak, Mustafa Sözen, Şaki̇r Özkurt, Tolga Kankiliç

Turkish Journal of Zoology

Morphological, biometrical, karyological, bacular and phallic aspects of Apodemus mystacinus populations in Turkey were studied based on 117 specimens. The biometrical and phallic comparisons confirmed the distinctness of A. m. mystacinus and A. m. epimelas. The UPGMA tree divided populations in Turkey into 2 groups. The distance (D) between A. m. mystacinus and A. m. euxinus was 0.469. A. mystacinus had karyotypic values of 2n = 48, NFa = 50, and NF = 52. Being different from A. m. epimelas, there was a short groove in the dorsal view of the phallus in populations of A. m. mystacinus in Turkey.


The Amphibian And Reptile Species Of Bozdağ (Ödemiş), Yusuf Kumlutaş, Adem Özdemi̇r, Çeti̇n Ilgaz, Murat Tosunoğlu Jan 2004

The Amphibian And Reptile Species Of Bozdağ (Ödemiş), Yusuf Kumlutaş, Adem Özdemi̇r, Çeti̇n Ilgaz, Murat Tosunoğlu

Turkish Journal of Zoology

The herpetofauna of Bozdağ in western Anatolia was investigated. In the study area, 152 samples belonging to 22 species from 14 amphibian and reptile families were described. One of these species is an urodelan, 5 are anurans, 1 is a tortoise, 10 are lizards and 5 are snakes. A specimen of Eumeces schneideri was found at Bozdağ for the first time.


Ornithobacterium Rhinotrachelae (Or) Infection, Nesri̇n Turan, Seyyal Ak Jan 2004

Ornithobacterium Rhinotrachelae (Or) Infection, Nesri̇n Turan, Seyyal Ak

Turkish Journal of Veterinary & Animal Sciences

Ornithobacterium rhinotracheale infection is characterized by respiratory disease, decreased growth and increased mortality in avians. Although a reasonably new infection, it has been found in many countries in a short period. In this article, this infection, which causes large financial losses in avian enterprises, was investigated.


Effects Of Different Diets On The Growth Performance, Gonad Development And Body Composition At First Sexual Maturity Of Rainbow Trout (Oncorhynchus Mykiss), Devri̇m Memi̇ş, Hüseyi̇n Gün Jan 2004

Effects Of Different Diets On The Growth Performance, Gonad Development And Body Composition At First Sexual Maturity Of Rainbow Trout (Oncorhynchus Mykiss), Devri̇m Memi̇ş, Hüseyi̇n Gün

Turkish Journal of Veterinary & Animal Sciences

Rainbow trout Oncorhynchus mykiss with an initial mean weight of 174 g (1+ year old) were fed on 3 different commercial diets (1 extruded pellet and 2 steam pellet) in the same environmental conditions until their first spawning. Changes in growth performance (weight gain, condition factor, specific growth rate and feed conversion rate), gonadosomatic index (GSI), hepatosomatic index (HSI) and body composition (protein, lipid, ash and dry matter) were investigated. The mean weight gain and condition factor for fish fed the extruded diet was significantly greater than for those fed the steam pellet diets (P < 0.05 ). There were no significant differences in specific growth rate, mean length increments and feed conversion rate among the groups, although the feed conversion rate for the extruded diet was slightly lower than the others. The HSI of the group fed an extruded diet was significantly greater than those of the others ( P < 0.05 ). The GSI values of female and male fish at the end of the study (October) did not differ significantly among the groups. Similarly, diet had no significant effects on the muscle composition of the trial fish, except that the muscle lipid of the group fed the extruded diet was significantly higher than those of the other groups (P < 0.05).


Characterization Of Ammonia Oxidizing Bacteria In An Activated Sludge Plant Using A Fluorescent In Situ Hybridization Method, Gülnur Coşkuner Jan 2004

Characterization Of Ammonia Oxidizing Bacteria In An Activated Sludge Plant Using A Fluorescent In Situ Hybridization Method, Gülnur Coşkuner

Turkish Journal of Biology

The spatial arrangement of functionally important ammonia oxidizing bacteria (AOB) in activated sludge flocs is largely unknown and activated sludge flocs are regarded as heterogeneous agglomerations of bacterial communities. This study aimed to determine both the location of AOB microcolonies within flocs and the size variation of these microcolonies based on their location. Fluorescent in situ hybridization (FISH) was used in combination with a confocal scanning laser microscope (CSLM) to achieve these goals. Grab samples taken from a full-scale plug flow wastewater treatment plant were examined with probes targeted to AOB b-Proteobacteria (Nso1225) and a genus specific probe targeted to …


Isolation And Characterization Of Aerobic Denitrifiers From Agricultural Soil, Ebru Çelen, Mehmet Aki̇f Kiliç Jan 2004

Isolation And Characterization Of Aerobic Denitrifiers From Agricultural Soil, Ebru Çelen, Mehmet Aki̇f Kiliç

Turkish Journal of Biology

Denitrification is generally considered an anaerobic process. However, in recent years it has been shown that bacteria can also reduce nitrate to nitrite under aerobic conditions. The characterization of biologically available nitrogen forms and their biological cycling mechanisms is important for ecological and agricultural implications. In this study, aerobic nitrate reducers were isolated from greenhouse soil. Using a nitrate reduction assay, it was found that 39 out of 60 isolates can reduce nitrate to nitrite under aerobic conditions. Five of those 39 isolates were selected for further characterization of their aerobic nitrate reduction activity. Four of those 5 isolates were …


The Effect Of Sex On Ischemia - Reperfusion Induced Arrhythmias And The Role Of Atp - Dependent Potassium Channel Blockage, Ersöz Gonca, Eylem Suveren Ti̇ryaki̇, Ömer Bozdoğan Jan 2004

The Effect Of Sex On Ischemia - Reperfusion Induced Arrhythmias And The Role Of Atp - Dependent Potassium Channel Blockage, Ersöz Gonca, Eylem Suveren Ti̇ryaki̇, Ömer Bozdoğan

Turkish Journal of Biology

The presence of more ATP-dependent potassium channels in females has been thought to play an important role in protection against myocardial ischemia. In this study, we investigated whether there is a difference in the severity of ischemia and reperfusion induced arrhythmias due to sex and, if there is, what the role of ATP-dependent potassium channel in this difference is. The left anterior descending coronary artery in rats was ligated and arrhythmias were recorded in ECG during 6 min. of ischemia and reperfusion. The duration of arrhythmias was shorter in females than in corresponding males. Glibenclamide was effective in decreasing the …


An Electrophoretic Study On Esterase And Blood Serum Proteins Of The Water Vole, Arvicola Terrestris (L., 1758) (Mammalia: Rodentia), In Kırşehir Province, Ceren İyi̇gün, Reyhan Çolak Jan 2004

An Electrophoretic Study On Esterase And Blood Serum Proteins Of The Water Vole, Arvicola Terrestris (L., 1758) (Mammalia: Rodentia), In Kırşehir Province, Ceren İyi̇gün, Reyhan Çolak

Turkish Journal of Biology

Esterase enzymes from 30 specimens of Arvicola terrestris in 4 localities in Kırşehir province were examined using starch gel electrophoresis and blood serum proteins from 27 specimens using SDS-PAGE. It was determined that the esterase enzyme had 2 alleles (A and B), which were coded by 1 locus. A and B allele frequencies were 0.362 and 0.638, respectively. The heterozygosity level was 0.5. It was determined that there were variations in the globulin, prealbumin and postalbumin regions, while the albumin region was monomorphic. There were 6-13 bands in the globulin region, 1-2 bands in the postalbumin zone and 2-4 bands …


Effect Of Different Operating Parameters On Seed Holding In The Single Seed Metering Unit Of A Pneumatic Planter, Zeli̇ha Bereket Barut, Azi̇z Özmerzi̇ Jan 2004

Effect Of Different Operating Parameters On Seed Holding In The Single Seed Metering Unit Of A Pneumatic Planter, Zeli̇ha Bereket Barut, Azi̇z Özmerzi̇

Turkish Journal of Agriculture and Forestry

This research was performed to determine the effect of different operating parameters on seed holding in a single seed metering unit. The metering unit was a vertical seed plate with a vacuum, used in seeding maize (Zea mays L.). An electronic counter in the metering unit was used to determine the holes without seed on the plate holes. The shapes of the holes, peripheral velocities, vacuum pressure, hole area on the seed plate and thousand grain weight of seed (TGW) were chosen as the operating parameters. A Factorial Completely Randomized Design was used for analysis of variance, Duncan's multiple range …


Effects Of Different Starter Culture Combinations On Fermented Sausages, Zafer Gönülalan, Ali̇ Arslan, Ali̇ Köse Jan 2004

Effects Of Different Starter Culture Combinations On Fermented Sausages, Zafer Gönülalan, Ali̇ Arslan, Ali̇ Köse

Turkish Journal of Veterinary & Animal Sciences

Commercial starter cultures containing (group A) S. xylosus DD-34 + P. pentosaceus PC-1, (group B) L. plantarum L74 + S. carnosus MIII, (group C) S. carnosus MIII + L. pentosus LP-1, (group D) S. xylosus DD-34 + P. pentosaceus PCFF-1, (group E) P. acidilactici PA-2, (group F) S. carnosus MC-1 + P. pentosaceus PC-1 and (group G) S. xylosus DD-34 + L. alimentarus BJ 33 were used for manufacturing fermented sausage. Sausage samples were examined for pH values, moisture contents, mesophilic aerobic bacteria, coliform bacteria, staphylococcus - micrococcus, lactobacillus, yeast and mould counts and sensorical characteristics on days 0, 1, …


Determination Of Some Quality Parameters Of Fishballs Prepared From Raw And Boiled Fish, Özgür Akkuş, Candan Varlik, Nuray Erkan, Sühendan Mol Jan 2004

Determination Of Some Quality Parameters Of Fishballs Prepared From Raw And Boiled Fish, Özgür Akkuş, Candan Varlik, Nuray Erkan, Sühendan Mol

Turkish Journal of Veterinary & Animal Sciences

The shelf life of fishballs prepared using raw and boiled fish was examined during cold storage (+4 ºC ± 1). Sensory, physical (loss of weight), chemical (TVB-N, TMA-N) and microbiological analyses (aerobic mesophilic bacteria, total psychrophilic bacteria) of fishballs made from raw and boiled anchovies and stored under cold storage conditions were carried out every 3 days. All analyses were carried out with two repetitions. The shelf life of fishballs was 9 days at +4 ºC ± 1 according to the results of the sensory, physical, chemical and microbiological analyses.


The Effects Of Urea And Molasses Addition Into Corn Harvested At Early-Milk Stage On Silage Quality And Digestible Dry Matter Yield, Ni̇hat Denek, Suphi̇ Deni̇z Jan 2004

The Effects Of Urea And Molasses Addition Into Corn Harvested At Early-Milk Stage On Silage Quality And Digestible Dry Matter Yield, Ni̇hat Denek, Suphi̇ Deni̇z

Turkish Journal of Veterinary & Animal Sciences

The objective of this study was to evaluate the effects of the addition of 0.5% urea or 0.5% urea plus 4% (w/w) molasses into corn varieties (Rx-947, 33-94, Frassino, and Arifiye) harvested at the early-milk stage on silage quality, in vitro digestibility and digestible dry matter (DM) yield. The addition of urea into silage increased the CP content (P < 0,05). The neutral detergent fiber and acid detergent fiber contents of the control silages were 69.40 and 38.68 for Rx-947, 69.34 and 38.69 for 33-94, 62.67 and 34.93 for Frassino, and 64.35 and 37.04 for Arifiye (P < 0,05). The addition of urea or urea plus molasses into silage increased the silage pH in all varieties, except for Rx-947 (P < 0,05). The lactic, acetic, propionic and butyric acid contents of the silage samples were between 23.2 and 153.3, 7.8 and 23.4, 0.6 and 1.6, and 0.0 and 0.54 g/kg DM, respectively. The addition of urea or urea and molasses into Rx-947 and Frassino varieties and the addition of urea only into the 33-94 variety increased silage lactic acid levels. The addition of urea and molasses into Rx-947, Frassino and Arifiye varieties also increased silage acetic acid levels (P < 0,05). There was a significant difference only between the Frassino and Arifiye varieties on this parameter (P < 0,05). The addition of urea only into silage decreased DM digestibility; the addition of molasses with urea, however, eliminated this negative effect of urea on digestibilit in all varieties, except for Frassino (P < 0,05). Digestible DM yields of untreated silage were 863.68, 1142.43, 1044.43, and 1075.07 kg/decare (10 decares = 1 hectare) for Rx-947, 33-94, Frassino and Arifiye, respectively (P < 0,05). The digestible DM yield of untreated Rx-947 silage was significantly lower than those of the others (P < 0,05). It can be concluded that corn varieties harvested at the early-milk stage (20% DM) can be ensiled, and that urea and molasses can be used as silage additive to increase CP and energy content of silages.


Yield Traits Of Geese Of Different Origins Reared In Turkey Iii. Slaughter And Carcass Traits, Muammer Ti̇lki̇, Şeref İnal Jan 2004

Yield Traits Of Geese Of Different Origins Reared In Turkey Iii. Slaughter And Carcass Traits, Muammer Ti̇lki̇, Şeref İnal

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to determine the carcass traits of geese of different origins reared in Turkey. INRA, Armutlu, Başkuyu and Tatlıcak origin geese were used; 6 females and 6 males of each origin were slaughtered at the end of the experiment. Among the origins, the differences were statistically significant for leg weight, head and abdominal fat ratio to the body (P < 0.05), neck weight, feather and gizzard fat ratio to the body (P < 0.01), hot carcass, blood, head, foot, heart, liver, gizzard, cold carcass, wing, breast and back weight, and blood, heart, liver and back ratio to the body were also significant (P < 0.001).


The Determination Of Energy Levels In Some Cereal Grains Used In Ruminant Diets By In Vivo And In Vitro Methods, Ni̇hat Denek, Suphi̇ Deni̇z Jan 2004

The Determination Of Energy Levels In Some Cereal Grains Used In Ruminant Diets By In Vivo And In Vitro Methods, Ni̇hat Denek, Suphi̇ Deni̇z

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to determine the energy levels of some energy source grains commonly used in ruminant nutrition by in vivo and in vitro methods. To achieve this objective, corn, barley, wheat, rye, oat, and triticale (4 replicates) were utilized. The in vivo digestibility of grains was determined with a metabolism trial using 4 animals per sample in an incomplete block design. The in vitro digestibility of grains was determined using an enzyme technique. For this purpose, cellulase, hemicellulase, amylase and pepsin were used. The in vivo dry matter and organic matter digestibilities of corn, barley, wheat, …


Growth And Milk Yield Traits Of Türkgeldi Sheep, Muhi̇tti̇n Özder, Mustafa Kaymakçi, Turgay Taşkin, Ertan Köycü, Fevzi̇ Karaağaç, Reşi̇t Sönmez Jan 2004

Growth And Milk Yield Traits Of Türkgeldi Sheep, Muhi̇tti̇n Özder, Mustafa Kaymakçi, Turgay Taşkin, Ertan Köycü, Fevzi̇ Karaağaç, Reşi̇t Sönmez

Turkish Journal of Veterinary & Animal Sciences

This study was conducted from data from 3 years of research performed at the Türkgeldi State Farm in 1997-2000. A total of 1053 Türkgeldi Pro-type B_1 Tahirova x Kıvırcık sheep including mature and young individuals were used as the study material. Litter size and fecundity were 1.42 and 1.51, respectively. The averages of birth weights and weaning weights were 3.43 and 20.04 kg, respectively. The average lactation milk yield was 100.62 kg, and the lactation period was 174.90 days. The levels of milk fat, protein, dry matter, ash and casein were 7.36%, 5.28%, 18.72%, 0.98% and 4.37%, respectively.


Carbon Dynamics In Tallgrass Prairie And Wheat Ecosystems, Rasi̇m Koçyi̇ği̇t, Charles W. Rice Jan 2004

Carbon Dynamics In Tallgrass Prairie And Wheat Ecosystems, Rasi̇m Koçyi̇ği̇t, Charles W. Rice

Turkish Journal of Agriculture and Forestry

Soil carbon (C) dynamics is an important aspect of the global C cycle. Soils can be a sink or source for atmospheric CO_2 depending upon management. Tallgrass prairie and wheat (Triticum aestivum L.) are 2 dominant ecosystems in the Great Plains. This study determined the distribution of C in these 2 ecosystems. Soil C pools, plant root biomass, and aboveground plant biomass were determined at a wheat (winter wheat) and a tallgrass prairie site in northern Oklahoma from 1998 through 2001. The objectives of this study were to determine C storage and changes in soil organic matter in tallgrass prairie …


Analysis Of Growth Characteristics Using The Richards Model In Female Brown Swiss And Holstein Friesian Cattle, Bahri̇ Bayram, Ömer Akbulut, Mete Yanar, Naci̇ Tüzemen Jan 2004

Analysis Of Growth Characteristics Using The Richards Model In Female Brown Swiss And Holstein Friesian Cattle, Bahri̇ Bayram, Ömer Akbulut, Mete Yanar, Naci̇ Tüzemen

Turkish Journal of Veterinary & Animal Sciences

Growth and development traits of female Brown Swiss and Holstein Friesian cattle born in the Research Farm of the Agricultural College at Atatürk University were estimated by the Richards growth model by using weight-age data obtained between 1987 and 1998. A, B, k and m parameters of the Richards model were 501 ± 6.88 kg, 0.6666 ± 0.0262, 0.0581 ± 0.0019/month and 4.07 ± 0.44 for Brown Swiss, and 496 ± 7.40, 0.8041 ± 0.032, 0.0515 ± 0.0028/month and 2.64 ± 0.67 for Holstein Friesian cattle. Estimated birth weight and periodic weights taken between birth and 3 years of age …


The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan Jan 2004

The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan

Turkish Journal of Agriculture and Forestry

This study was conducted to determine the effect of different water levels on the sugar rate, sugar yield and root yield of sugar beet (Beta vulgaris L.) under Kahramanmaraş climatic conditions in the production season 1999-2000. A line source sprinkler irrigation system was used with 6 irrigation levels; I_1, I_2, I_3, I_4, I_5 and I_6. The sugar beet row adjacent to the lateral was denoted the most water applied level (I_1), and the most remote row from the lateral was denoted the least water applied level (I_6). The plant rows between levels I_1 and I_6 were taken as the deficit …


Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü Jan 2004

Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü

Turkish Journal of Agriculture and Forestry

This research was carried out at the University of Ankara, Faculty of Agriculture, Field Crops Department and the laboratories of the Food Engineering Department. Twenty-nine anise seed samples were collected from different locations in 9 producer provinces in Turkey and were used as the study materials in order to determine essential oil and essential oil compositions. According to the results, essential oil levels varied from 1.3% to 3.7%. The major component of the essential oil was trans-anethole. This compound ranged from 78.63% to 95.21%. Population 26 may be recommended for trans-anethole percentage and populations 8 and 22 for essential oil …


Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz Jan 2004

Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz

Turkish Journal of Agriculture and Forestry

The effects of 4 seeding rates (20, 40, 80 and 160 kg ha^{-1}) on dry matter yield, seed yield and yield components were evaluated in 4 accessions (L46, L79, L457, Local) of Hungarian vetch (Vicia pannonica Crantz.) under fall seeding conditions during the 2000-2001 and 2001-2002 crop years. Dry matter yield, plant height, number of pods per plant, number of seeds per plant, 1000- seed weight, biomass yield, seed yield and harvest index were measured. Based on the 2-year results, no significant differences were found among Hungarian vetch accessions in any of the measured characteristics with the exception of 1000- …


Qtl Analysis Of Ascochyta Blight Resistance In Chickpea, Mücella Tekeoğlu, Muzaffer Işik, Fred J. Muehlbauer Jan 2004

Qtl Analysis Of Ascochyta Blight Resistance In Chickpea, Mücella Tekeoğlu, Muzaffer Işik, Fred J. Muehlbauer

Turkish Journal of Agriculture and Forestry

Recent advances in quantitative trait loci (QTL) analysis have facilitated studies on Ascochyta blight, caused by Ascochyta rabiei Pass (Lab.), resistance in chickpea (Cicer arietinum L.). Using a recombinant inbred line (RIL) population derived from an interspecific cross between C. arietinum and C. reticulatum, the same 2 QTLs conferring resistance to Ascochyta blight were identified at 2 locations by interval mapping. Genotype X environment (G x E) interaction was significant both between years at the same location and between locations. The effect of QTL-1 on linkage group 8 (LG-8) was greater than that of QTL-2 on LG-4 at Pullman while …


The Effects Of Processing Techniques On Microflora Of Roach (Rutilus Rutilus) And Whitefish (Coregenus Sp.), Fatma Arik Çolakoğlu Jan 2004

The Effects Of Processing Techniques On Microflora Of Roach (Rutilus Rutilus) And Whitefish (Coregenus Sp.), Fatma Arik Çolakoğlu

Turkish Journal of Veterinary & Animal Sciences

Two fish species, Rutilus rutilus and Coregenus sp., were processed using 4 techniques, and the effects of the processing were investigated on the bactarial flora of fish products, which is a crucially important criterion with regard to fish spoilage. A total of 85 fish were processed using smoked, fried, marinated and salad techniques. The microbiological features of these processed fish products were examined. For this purpose, the total number of aerobic bacteria and numbers of Enterobacter, Pseudomonas, Staphylococcus, Lactobacillus, Enterococcus and Bacillus, which are called "normal flora", and fungi that are known to influence the spoilage of fish were determined. …