Ereğli Tarım Bilimleri Dergisi Archive

A weed competes with crop plants for light, nutrition, water and air. They cause significant loss to agriculture and also reduce the productive capacity of land.  Aim of this study is to evaluate effects of herbicide imazamox (IMI) on germination and seedling growth parameters and determine the optimal herbicide imazamox (IMI) dose which can be used in wheat breeding programs. In this study, 4 IMI doses [0 (control), 40, 50, 60 ppm], 3 buffer solutions (pH = 7.0) [MES hydrate, phosphate buffer and pure water] and 2 different pre-applications (seeds were kept either in herbicide solution for 24 hours or germinated in media containing herbicide) were applied as randomized plots design with two factors and three replications according randomized block in factorial design. Germination rate, average germination time, germination rate index and germination vigor index, root and shoot length and weights were measured. Control application with 24 h kept in water in all tested buffers resulted in increase in average germination time whereas decrease in all other germination parameters. No differences were observed between buffer applications regarding to Control treatment in germination media containing herbicide. When herbicide doses were compared based on average values of buffer applications, average germination time was elevated in respect to increase concentration of herbicide doses, on the other hand, common decrease was observed in other parameters. Effect of herbicide was observed on seedling parameters such as root and shoot length and weight rather than germination parameters. The highest adverse effect on plant growth and development was observed in phosphate buffer with 60 ppm imazomax application.

Spinach (Spinacia oleracea L.) is one of the most important winter vegetables used for its edible green leaves. Due to the increase in demand in most parts of the world, significant changes have occurred in production amounts in the last ten years. Based on use, spinach leaves are broadly divided into three types: (i) savoy type (used for fresh market), (ii) processing type (smooth leaf type with flat, unwrinkled and spade-shaped leaves), and (iii) flavor and delicate. Due to its structure, it is baby spinach that is preferably used in salads. There is a need for sufficient biological, taxonomic, genetic and agronomic knowledge about spinach populations in order to investigate spinach populations, develop new varieties and be successful in their studies.In this study, 157 spinach genotypes belonging to the S2 grade, which consists of domestic and commercial varieties, were evaluated to determine their diversity by using agro-morphological characteristics in order to determine their performance as a winter vegetable in our country. The studied genotypes are an important resource for the establishment of the world's core spinach collection. As a result, spinach genotypes, which were agro-morphologically characterized according to IPGRI criteria, showed high morphological diversity. It is thought that the results of the present study will support the conservation and use of local species in spinach cultivation programs.

This study evaluated the effects of two different pumpkin genotypes (C-26 and C-27) on root growth parameters and some nutrition element concentrations under drought stress conditions. The research was carried out in five replications. Both genotypes are negatively affected by drought stress. However, it was determined that the C-26 genotype showed a more significant decrease in root growth rates than C-27 (48%). However, while was an increase in root fresh and dry weights in the C-26 genotype, there were decreases in the C-27 genotype compared to the control. A proportionally more significant decrease in Ca, Mg, and Na contents in the C-26 genotype was observed with drought stress. In the amount of K, the C-27 genotype showed a significant decrease compared to C-26. Having information about the contents of plant nutrients in drought conditions in plants with economic potential such as zucchini can help control plants' growth and development under these conditions.

In this study, the effect of pretreatment was investigated by drying purple carrots at a constant 65 °C temperature in a Nuve ID 300 air-conditioning test cabinet. The most suitable drying method was investigated in terms of drying time, drying rate, rehydration, color, hardness and effective diffusion parameters of the samples. It was determined that the pre-treatment application significantly reduced the drying time of the purple carrot. Carrot samples, which were pre-treated by dipping into boiled water before drying, dried in 5.5 hours, while control samples (without pre-treatment) dried in 6.5 hours. The color values closest to fresh (p<0.05) were determined in the dried samples after immersion in boiling water. The highest water absorption capacity was determined in the samples with pre-boiled water treatment. The effective diffusion value of the control samples was calculated as 4.10x10^-10 m²/s and the samples dipped in boiling water as 4.31x10^-10 m²/s. Among the drying models, the Polynomial Cubic model (R²: 0.9999) estimated the drying data best. It has been determined that the pre-treatment of dipped in boiled water reduces the drying time of the carrot samples, protects the color values ​​better and accelerates the effective diffusion values. According to the findings, it is recommended to apply dipping pre-treatment in boiled water in terms of both drying kinetics and quality properties in the drying processes of purple carrot samples.

In this study, it was aimed to compare the performances of 5 hybrid bell pepper cultivars developed within the scope of pepper cultivar breeding program in terms of fruit quality and yield characteristics in summer cultivation under open conditions in Konya. The first fruits were harvested 68 days after planting. Fruit length varied between 54.28 and 80.49 mm. Fruit diameter was found to be between 47.59-66.52 mm and wall thickness between 3.55-5.08 mm. Among the bell pepper genotypes, the average yield per plant was 933.4 g, with the highest 1496 g and E27 variety candidate with the lowest 678 g and P17 variety candidate. It was determined that the number of fruits per plant in hybrid pepper cultivar candidates varied between 14 and 22 on average. It is thought that these cultivar candidates can be grown in open field conditions in regions such as Konya with arid and semi-arid climates and will contribute to the country's agriculture.