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    EFFECTS OF VERMICOMPOST APPLICATION ON GROWTH AND YIELD OF HOT PEPPER (CAPSICUM FRUTESCENS)
    (Latvia University of Life Sciences and Technologies, 2024) Atilgan, Atilgan; Arslan, Fırat; Saltuk, Burak; Koci?cka, Joanna; Jotautiené, Eglè; Juostas, Antanas
    In parallel with the increase in the world population, healthy nutrition becomes more important for people every day. However, Good Agricultural Practices (GAP) are also gaining importance. The main goal of our study is to reduce the level of inorganic fertilizer use. The experimental area where the study was conducted is located at 36° 31' 21'' north latitude and 32° 05' 07'' east longitude. In this study, 2 m high, 12 m long and 3 m wide plastic greenhouses with arc roofs were used. The greenhouses are naturally ventilated, unheated tunnel type greenhouses. UV-added plastic cover material was used as the cover material in the greenhouse. Hot pepper was chosen as the material. In the research, the development parameters of the hot pepper plant were examined by using different doses of one organic and one inorganic fertilizer type. Vermicompost (VC) was applied at a rate of 2,500 and 5,000 kg per hectare and inorganic fertilizer was used at a rate of 60-100-160 and 30-50-80 kg per hectare. Nine applications were carried out, including different doses of these two fertilizers, their combined use, and a control group. Plant heights, SPAD (Spectrum Authorized Dealer) values, plant diameters and yield values were measured weekly from the date the seedlings were planted in the experimental greenhouses until the end of harvest. The parameters found to be important in the variance analysis results of the data obtained from the trial subjects were compared with the Student's t test, and the application groups were determined and interpreted statistically. As a result, the effects of VC and inorganic fertilizer values on the development parameters and yield values of the pepper plant were determined. It has been determined that the plant growth parameters and productivity are higher, especially when 5000 kg of organic fertilizer and 5000+60-100-160 mixed fertilizer are used per hectare. Therefore, good agricultural practices include reducing the use of inorganic fertilizers. © 2024 Latvia University of Life Sciences and Technologies. All rights reserved.
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    INVESTIGATION ON ENVIRONMENTALLY FRIENDLY WHEAT HARVEST TECHNOLOGY
    (Latvia University of Life Sciences and Technologies, 2024) Jotautiené, Eglè; Juostas, Antanas; Atilgan, Atilgan
    Unpredictable weather conditions shorten the harvest period, the harvest itself becomes more and more complicated. During the harvest period, combine harvesters must be used not only at the maximum possible efficiency, but also to protect the environment and apply harvesting technologies that comply with the principles of sustainable agriculture. Harvesting is one of the most important agricultural operations, requiring a lot of equipment, energy resources and manpower. Unfavourable natural conditions can delay harvesting, which would lead to lower grain quality and lower economic benefits. Therefore, new harvesting technologies and ways of solving them are constantly being sought, which help harvest more efficiently and with better quality and at the same time protect the environment. Usually, for grain harvesting, combine harvesters are equipped with cutterbars of various sizes and technological solutions. A little less often, when harvesting grain, a stripper header mounted on the combine is used, thanks to which only the grain ears are scraped off. The purpose of this study is to investigate the technological process of harvesting using a stripper header in order to determine the most optimal working parameters. Combine harvesters CLAAS Lexion 550 with a conventional cutterbar and stripper header harvested wheat. The influence of the working parameters of the stripper header on the quality of wheat harvest and grain losses was studied. It was determined that with the same settings of the harvesters, but equipped with a conventional grain cutterbar and stripper header, the average yield losses were 1.58% and 0.89%, respectively. The results of the research showed that increasing the driving speed increases the yield loss when working with a conventional cutterbar. Meanwhile, by increasing the driving speed, when working with stripper header, grain losses decrease. © 2024 Latvia University of Life Sciences and Technologies. All rights reserved.