The Latvia University of Life Sciences and Technologies and Organizing Committee of Annual 27th International Scientific Conference ‘Research for Rural Development 2021’ tried to continues a tradition of bringing together researchers, academic and professionals in Jelgava, from 12 to 14 May, 2021 from all over the world. But, unfortunately, this year again the rules were set by the Covid-19 virus pandemic. We did start new tradition from 2020, account from 1st until the 27th conference and totally are 36 Volumes. The interdisciplinary papers contributed the most recent scientific knowledge in crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, information and communication technologies. These Proceedings will furnish the scientists of the world with an excellent reference volume. We trust also that this will be an impetus to stimulate further study and research in all these areas.

In the celebration of the Annual 25th International Scientific Conference “Research for Rural Development 2019ˮ held at the Latvia University of Life Sciences and Technologies, in Jelgava, from 15 to 17 May, participants with different backgrounds from 12 countries did 156 presentations, enjoyed welcome dinner with Latvian folk songs and dances as well as tasted a special cake. During a social programme of the conference, the participants visited a malt production plant, Rundāle palace and had farewell lunch. In the retrospect, four months later, we consider the Conference a great success in terms of interdisciplinary studies and networking opportunities. The sessions of the conference were structured so as to give all participants the opportunity to contribute to the primary purpose of the conference, which is discussion of important current issues facing rural development. The interdisciplinary proceedings of the Annual 25th International Scientific Conference “Research for Rural Development 2019ˮ (two volumes since 2010) are intended for academics, students and professionals. The subjects covered by those issues are as follows: crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, information and communication technologies.

Latvia University of Life Sciences and Technologies and Organizing Committee of Annual 26th International Scientific Conference on Research for Rural Development 2020 tried to continues a tradition of bringing together researchers, academic and professionals in Jelgava, from 13 to 15 May, 2020 from all over the world. But, unfortunately, this year the rules were set by the coronavirus disease (COVID-19) pandemic. We did start new tradition from 2020, account from 1st until the 26th conference and totally are 35 volumes. The interdisciplinary papers contributed the most recent scientific knowledge in agricultural sciences, forestry and wood processing, food sciences, veterinary medicine, economics, rural and environmental engineering, water management; information and communication technologies and education. These Proceedings will furnish the scientists of the world with an excellent reference volume. We trust also that this will be an impetus to stimulate further study and research in all these areas.

The Annual 24th International Scientific Conference ‘Research for Rural Development 2018’ was special and dedicated to the Latvia a 100 years since became an independent state, 155th Anniversary of Latvia University of Life Sciences and Technologies (LLU) and 280th Anniversary of Jelgava palace, where is located the main building of university. In the retrospect of four months later, we can count the Conference as a great success as interdisciplinary studies. The theme – Research for Rural Development - attracted participation more than 167 researchers with very different backgrounds. There were 139 presentations from different universities of Estonia, Poland, Kazakhstan, Lithuania, Ukraine, Sweden, South Africa, Indonesia, Russia and Latvia. The interdisciplinary proceedings of the Annual 24th International Scientific Conference ‘Research for Rural Development 2018’ (two volumes since 2010) are intended for academics, students and professionals. The subjects covered by those issues are crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, landscape architecture, information and communication technologies.

The four independent reviewers estimated each paper and recommended 81 articles for publishing at the proceedings consisted of 2 volumes, which started life as presentations at the Annual 23rd International Scientific Conference “Research for Rural Development 2017” held at the Latvia University of Agriculture, in Jelgava, on 17 to 19 May 2017. In the retrospect of four months later, we can count the Conference as a great success. The theme – Research for Rural Development - attracted participation more than 155 researchers with very different backgrounds. There were 124 presentations from different universities of Poland, Kazakhstan, France, Czech Republic, Lithuania, Estonia, India, Russia and Latvia. Thank you for your participation! We are sure that you have learned from the presentations and discussions during the conference and you can use the outcomes in the future. The cross disciplinary proceedings of the Annual 23rd International Scientific Conference “Research for Rural Development 2017” (two volumes since 2010) are intended for academics, students and professionals. The subjects covered by those issues are crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, landscape architecture, information and communication technologies. The papers are grouped according to the sessions in which they have been presented.