Atatürk University Journal of Agricultural Faculty (Atatürk Üniversitesi Ziraat Fakültesi Dergisi)

119-125

Authors: Nur ERTEK [1] , Vedat DAĞDEMİR [2] , Atilla KESKİN [3]

In this study, prices of the mandarin producers and consumers and its marketing structure in Turkey were examined. Between 2003 and 2017, production, consumption, foreign trade, price fluctuations, and marketing of the mandarin product were analyzed. The yield of the product in the increased bearer and the production rate increases in Turkey. Based on the current and real prices, the mandarin marketing margins were calculated, while the chain indexes of both producers and consumers were obtained through the current prices. We then compare them with the annual inflation rate in the country. Supply and demand models of the mandarin product were estimated and interpreted statistically. As a result, the real price of diesel and the trend (time) were found to have an impact on the mandarin production amount, while the mandarin consumer real price, orange consumer real price, and national income were determined to be effective on the mandarin consumption amount.

140-144

Authors: Kevser KARAGÖZ [1] , Abdurrahman HANAY [2]

In this study, the effect of bat manure on the some macro element content, pH and cation exchange capacity (CEC) of soils was investigated in order to compare with the traditional method of livestockmanure. Both organic materials were applied at increasing doses of 0 (control); 5; 500; 1000; 1500; 2000 kg.da-1 and a wheat plant was used as the experiment plant. The study was carried out in the field of Soil and Water Resources of East Anatolia Agricultural Research Institute (Erzurum) between the years of 2011-2013 and the results were evaluated by LSD multiple comparison test according to the completely randomized block design. When the bat guano and livestock manure results of the study were compared to the control, the highest bat manure dose increased by content of the nitrogen (N) 32%, phosphorus (P) 407%, potassium (K) 61%, pH 3% and cation exchange capacity (CEC) 17% of the soil.

151-158

Authors: Sibel KADIOĞLU [1] , Mustafa TAN [2] , Banu KADIOĞLU [3] , Gökhan TAŞĞIN [4]

This research was planned to determine the performance of some forage pea (Pisum sativum ssp. arvense L.) genotypes in Erzurum conditions. The study was carried out in the Pasinler Research Station trial areas of the Eastern Anatolia Agricultural Research Institute in 2011, 2012 and 2013. Field experiments were conducted in randomized complete blocks design with 3 replications. According to the three-year averages; time for flowering was 55.0-62.8 days, time for physiological maturity was 91.6-102.0 days, plant height is 90.3-110.6 cm, green forage yield was 1587.8-2764.5 kg da-1 and seed yield was 145.6-322.0 kg da-1. The highest yield values were determined as 3156 kg da-1 for green forage yield and 283.3 kg da-1 for seed yield in the second year of the experiment and it was determined that there were significant differences between years and genotypes in terms of yield and agricultural characteristics. According to the correlation analysis between yield and yield components; a positive correlation was determined between green forage yield and the number of emergence days, plant height and number of branches, 1% pod number in the plant and 5% significance level, 1% between seed yield and thousand grain weight, 5% significance level in the number of pods. As a result, it is concluded that ecological properties affect yields and different genotypes have different yield potentials. It has been decided that H-13 and H-9 genotypes can be grown in the region without any problems in terms of green forage and seed yield. Among the varieties, because their seeds are easy find, Taskent, Tore, Urunlu and Ozkaynak varieties can be recommended for hay production and Kirazli variety for seed production.

168-175

Authors: Janko KOLAROV [1] , Saliha ÇORUH [2] , İrfan ÇORUH [3]

The objective of this study was to evaluate ichneumonid samples, collected from northeastern Anatolia (Erzurum: Pazaryolu-Kumaşkaya). Samples were collected during the summer period of 2015. Collected 14 species belong to Ichneumoninae, Ophioninae, Orthocentrinae and Pimplinae subfamilies. Cylloceria sylvestris (Gravenhorst, 1829) is new record for the Turkish fauna. Individual diversity, collecting locations, distribution data and short zoogeographical notes are given for each species.

183-189

Authors: Gökhan ARSLAN [1]

In this research; chemical and sensory changes of rainbow trout (O. mykiss) fillets added black cumin oil were examined during 9 days storage period. Chemical (pH, TVB-N and TBARS) and sensory (colour, odour, appearance and general acceptance) analyzes of samples were made in every three days period. According to the results of chemical analysis, TVB-N and TBARS values were lower in the samples with different concentrations of black cumin oil compared to the control group during the storage period. The pH range of all samples was 6.07 (day 0 group D) and 6.39 (day 3 group B). As a result of the sensory evaluations, at least control group (4.25 ± 0.03) samples were accepted by the panelists in terms of general acceptability, while D group (5.00 ± 0.00) samples were liked the most. Sensory analysis results are in line with chemical analysis results.

199-206

Authors: Baki AYDIN [1] , Süleyman AKHAN [2]

In this review, the distribution, biology, feeding, breeding potential and commercial importance of doctor fish (Garra rufa), which have increased in importance in recent years due to the intensive use of ichthyotherapy and fish SPA centers, have been emphasized. The doctor fish, which was first used in 1989 for ichthyotherapy purposes, is used in fish SPA centers for fish massage and pedicure purposes, which are of great interest all over the world today. Due to the increased interest and demand for doctor fish for the purpose of ichthyotherapy and fish massage in the health and tourism sector, cultivation of this species is very important in terms of ensuring the demand through aquaculture and preserving natural fish stocks. Although there are various studies on the distribution, biology and genetics of the doctor fish, it has been observed that there are not enough studies and resources about its breeding. The researches about the culture of doctor fish are very few and these studies are on its thermal tolerance range, the effect of feeding frequency on growth, hormone application and larval feeding. The demand for doctor fish is rapidly increasing in our country and in the world, and this increasing demand is met by import or from natural stocks. For this reason, it is essential that the breeding of doctor fish begins immediately in our country.