This study focuses on the investigation of enhancing convective heat transfer between the absorber and the air inside a channel. The investigation approaches modeling different absorber through CFD simulation and validating the result with experimental data. Supplying air to both sides of the top and the bottom surfaces of the absorber increase the air mass flow rate and therefore increases the thermal efficiency of the dryer. The studies in a V-grooved absorber attain high hot air velocity; high thermal efficiency resulted from high turbulence created in the duct. For the sample taken with a flow range, 0.01kg/s to 0.06 kg/s, the high output temperature was observed in a lower temperature range and increases as the flow rate increases. At a flow rate 0.01 kg/s, the velocity of hot air passing over the V-grooved absorber attain 0.28 m/s and increased to 1.4 m/s as the mass flow rate increased to 0.06 kg/s. For the rectangular absorber, the velocity of hot air attains 0.15 m/s at a flow rate of 0.01 kg/s and increased to 1.46 m/s as the mass flow rate increases to 0.06 kg/s. The double-sided V-grooved absorber contributes 8 – 12.40% value more efficiency compared to the rectangular plate with the same flow orientation. Further investigation is recommended taking the quantitative analysis obtained in this study and generating qualitative data.

Nutrient elements, one of the major factors shaping plant development, are the major components of plants, and, after being taken from the soil, they are present in different organs of plant at different concentrations. The speciation of nutrient elements within plant body is vital importance for determining the contribution to plant development, knowing the transfer between organs within the body of organs, clearly understanding the factors influencing plant development, and shaping the plant development. In the present study, the change of the concentrations of K and Mg (macronutrient elements) and Cu (micronutrient elements) by species and organ in woody species Prunus cerasifera, Platanus orientalis, Acer negundo, Fraxinus excelsior, Catalpa bignonioides, Aesculus hippocastanum, and Tilia platypyllos. As a result, it was found that the changes of elements by species were statistically significant in all the organs, and, in general, the highest concentrations were observed in leaves. The study results revealed that the concentrations of these elements might significantly vary between the organs in the same species, which varies significantly by the species.

The study was conducted to assess consumers’ preference and willingness to pay for different pepper varieties in Osun State, Nigeria. The study used the major pepper types – Capsicum chinenses (Rodo), C. annum (Tatase), C. frutescens (Sombo) and C. pubescens (Bawa), being sold in the markets in Osun State, Nigeria. A multistage sampling technique was used to collect data from 100 respondents. The primary data collected were analysed using descriptive and inferential statistics. The study showed that consumers mostly preferred and were willing to pay more for C. chinenses (Rodo) than any other types of pepper. Household size, primary occupation, total household income, availability and meal-making ability of pepper were the factors that influenced consumers’ preference for the different varieties of pepper while the willingness to pay for pepper varieties by consumers was influenced by affordability, availability, taste and thickness. The study recommends that since availability and affordability influenced preference and willingness to pay for pepper varieties, policies should be aimed at increasing farmers’ production as this will ensure that pepper is readily available and affordable for consumers.

In the present study, it was aimed to determine the volatile aroma composition and antioxidant activity of Maitake mushroom grown in different substrate mixtures comparatively. Five different substrate mixtures except control were prepared. Total polyphenols and antioxidant activities were specified by Folin-Ciocalteu, FRAP and DPPH methods. Furthermore, analyzes were carried out in both dried and frozen samples. Head Space Solid Phase Micro Extraction technique combined with Gas Chromatography-Mass Spectrometry (GC-MS) was used in the analysis of volatile compounds. In the present study, yield was obtained only from S4 (oak sawdust + wheat stalk + bran at 1:1:1 ratios) and S5 (poplar sawdust + wheat stalk + bran at 1:1:1 ratios) growing mixtures. Therefore, the studies have been continued by comparing only these two mixtures. While the yield in S4 mixture was 55.02 g 1 kg bag-1, it was determined as 124.82 g 1 kg bag-1 in S5 mixture. DPPH analysis results of frozen and dried samples were 7.99±0.08 and 8.19±0.05 µmol TE g-1 DM (S4) and 8.07±0.09 and 8.20±0.06 µmol TE g DM-1 (S5) respectively. In volatile aroma profile analysis, 22 and 32 compounds were detected in S4 and S5, respectively. Ketones were the most found compound groups and its ratio was 68.67% in S4 and 52.37% in S5. The highest percentage among ketones was obtained from 4-nonanone and 3-octanone compounds.

The study aims to investigate the monthly changes in the prices of culture fish that were sold in retail fish outlets in Sinop in 2019 and determine the correlations between the prices of the species. The retail outlets were determined using stratified sampling and divided into three groups as I (high), II (medium), and III (low) with respect to their product range and sale amounts. Each sale group was represented by two independent retail outlets. The prices were determined twice a month at the same time of the day during the study. The retail outlets were determined to sell sea bream (Sparus aurata), sea bass (Dicentrarchus labrax), and rainbow trout (Oncorhyncus mykiss) culturing of which are carried out in Turkey. The difference in the monthly prices of the species was not statistically significant. There was a positive and moderate relationship between the prices of sea bream and sea bass (r=0.69), a positive and strong relationship between the prices of sea bass and trout (r=0.85), and a positive and strong relationship between the prices of sea bream and trout (r=0.71).

In order to increase access to nutritious foods around the world, innovative technologies need to be developed and integrated into agricultural production systems. The new plant breeding techniques developed offer many advantages for making modifications in the plant genome. CRSPR/Cas9, one of the genome editing technologies, is an efficient system with high potential that allows the formation of target-oriented mutations in many agricultural products and allows the mutation of new and desired characters to be obtained through breeding programs without the use of foreign genetic elements. In this review, we have summarize the discovery, evalution, functionality, genome editing studies of plants and the strong potentials of CRSPR/Cas9 technology for plant breeding.

Yapılan bu çalışmada, Türkiye’de yetişen iki farklı Maviyemiş (Brigitta ve Darrow) çeşidine ait sezonluk meyveler tüm yıl boyunca ulaşılabilirliğinin sağlanması amacıyla reçel ve marmelata işlenmiştir. Elde edilen ürünlerin depolama süresince toplam fenolik madde, toplam antosiyanin ve antioksidan kapasitesi gibi beslenme ve sağlık açısından son derece önemli fitokimyasal özelliklerindeki değişimlerin incelenmesi amaçlanmıştır. Taze maviyemiş meyvelerinde başlangıçta, reçel ve marmelatlarda ise 6 aylık depolama sürecinin 0, 2, 4 ve 6. aylarında toplam fenolik madde, antioksidan kapasite (TEAC, FRAP), toplam antosiyanin, polimerik renk ve HMF analizleri yapılmıştır. Depolama süresince maviyemiş çeşitlerine ait reçel ve marmelat örneklerinde toplam fenolik madde miktarı 178,68-518,45 μg GAE/g; TEAC değerleri 1,16-11,60 μmol TE/g; FRAP değerleri 1.83-10,33 μmol TE/g ve antosiyanin miktarının 7,35-298,22 µg cy-3 glu/g arasında değiştiği ve en yüksek değerlere Darrow çeşidine ait örneklerin sahip olduğu belirlenmiştir. 6 aylık depolama süresi sonunda Polimerik renk değeri bakımından en fazla artışın (%124 ve %73) Darrow çeşidine ait reçel ve marmelat örneklerinde gerçekleştiği, HMF değeri bakımından ise en fazla artışın (%65 ve %87) Brigitta çeşidine ait reçel ve marmelat örneklerinde meydana geldiği gözlemlenmiştir.

Macrophomina phaseolina is a soil pathogen known as charcoal rot and can cause up to 90% yield loss in sunflower under suitable conditions. The serious damage caused by chemicals used in the control of soil-borne pathogens to the environment and health has become one of the most important concerns in agriculture. Therefore, in our study, it was aimed to determine the in vitro antagonistic effects of various bacterial species against M phaseolina. A total of 38 bacterial strains were isolated from soil samples in the rhizosphere of Malva sylvestris (hibiscus), Vicia sativa (vetch), Cicer arietinum (chickpea), Papaver rhoeas (weasel), Carlina marianum (thistle), Glebionis coronaria (crown daisy) and Vicia faba collected from Urla district of İzmir. All bacterial strains exhibited antibiosis effect under in vitro conditions, but it was determined that 5 bacterial isolates among them showed a high inhibition zone and showed an average inhibition potential ranging between 55% and 74%. The most effective bacteria identified at species and genus level by Maldi biotyping (MALDI-TOF MS) were identified as Bacillus amyloliquefaciens, Stenotrophomonas sp. and Bacillus cereus (3 isolates), and these species showed that they can be important biocontrol agents in biological control against M. phaseolina.

In recent years, there have been unexplained colony losses around the world. Due to the decrease in honey bee colonies, many studies have been carried out to investigate potential causes. One of the main causes of losses is also insecticides. Insecticides used against harmful insects in agricultural fields affect not only harmful ones but also beneficial insects such as honey bees directly or indirectly. Honey bee losses are more common, especially where insecticides are used, and the immune systems of bees exposed to insecticides in these areas weaken; foraging behavior, the ability to smell and learn is impaired. In addition, it leaves residues in bee products such as honey, wax, pollen and bee bread. Effective and sustainable solutions are sought worldwide in order to cope with these losses that pose a major ecological threat. This review aims to reveal the current situation by examining the effects of insecticides on honey bee behavior and physiology.

In this study, the dynamism of forest areas was tried to be determined by determining the ecological differences between the areas where Fagus orientalis Lipsky. (Eastern beech, Fagaceae), a very important species for forestry in Turkey, and the soils of agricultural fields. lime %, total salt %, pH, texture, field capacity %, C%, N%, C/N ratios, 30-day carbon mineralization of the lands of Eastern beech forests and agricultural fields, which are naturally formed in Sivas province Koyulhisar district, under controlled conditions (28°C, 80 humidity %) was determined by the respiration method, and two areas in two different ecosystems were compared. When the carbon mineralizations of eastern beech soils were examined seasonally, it was determined as 19.54>18.23>17.87>17.18 mg C(CO2)/100g DS/30 day in spring>autumn>summer>winter seasons, while it was determined as 14.46>13.87>13.68>13.65 mg C(CO2)/100g DS/30 day in autumn>summer>spring>winter seasons in agricultural soils, respectively. Significant relationships were found between the C%, N%, 30-day carbon mineralization cumulative values and % carbon mineralization rates between both areas.