Browsing by Author "Alp, Y."

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The Effect of Drought Stress on Plant Development in Some Landraces and Commercial Tomato Genotypes
(Centenary University, 2017) Alp, Y.; Kabay, T.
One of the important factors that adversely affect tomato production is drought. As well as reducing yield and quality of tomato production, drought also reduces farmer’s income. One of the most important ways of alleviating its adverse effects is to determine the varieties that are tolerant to drought. For this reason, our study aimed to determine the tolerance of the varieties to drought. Accordingly, three hybrids varieties, three standards varieties and three landraces were used in the study. Tomato seeds were planted in a 2 litres-pot that contains 1:1 mixture of peat + perlite. After the cotyledon leaves busted out, the plant was irrigated with the Hoagland nutrient solution. While irrigation was carried on the control plants until the end of the application, irrigation was suddenly halted during the seedling period in the plants that are exposed to drought. After 12 days, plant fresh and dry weights, growth rates, leaf numbers, stem diameters, plant weights, 0-5 scale values, membrane damage indices and leaf proportional water contents were investigated. It was observed that there were significant differences in these parameters examined for the determination of tomato varieties that are tolerant and sensitive to drought stress. © 2017, Centenary University. All rights reserved.
The Effects of Different Fertilizer Applications on Some Morphological Traits in Fresh Bean
(Centenary University, 2023) Alp, Y.; Şensoy, S.
The study was conducted to determine the morphological changes caused by different fertilizer applications on the fresh bean, in the Göllü Village of Tusba District of Van Province according to the randomized blocks experimental design in 2019 and 2020. Sazova 1949 dwarf bean variety was used as plant material in the study. The field experiment was carried out with 4 replications and 4 different fertilizer applications (chemical, organomineral, cattle, and vermicompost) except for the control. In the study, plant height, stem diameter, node number, internode length, flower bud length, flower bud width, flower stem length, number of flowers per cluster, bract length, number of nodes with the first flower, middle leaflet length, number of leaves, first pod height, pod length, pod width, number of pods per bunch, pod weight, pod thickness, number of seeds per pod, chlorophyll (SPAD value) and leaf color L*, a*, b, Chroma°, and hue° values were investigated. As a result of the study; it was determined that different fertilizer applications gave significantly different results in terms of the traits examined, higher results were obtained from organomineral and vermicompost fertilizers compared to the control group, and generally equivalent or better results were obtained than chemical fertilizers. It was concluded that some organic fertilizer applications in bean cultivation might be used as an alternative to chemical fertilizer applications in terms of a sustainable world. © 2023, Centenary University. All rights reserved.