PHOTOSYNTHETIC PRODUCTIVITY OF SINGLE-SPECIES AND COMPATIBLE CROPS OF SUGAR SORGHUM WITH SOYBEANS
Lipovy Vasyl Grigorovich – PhD of Agricultural Sciences, Associate Professor of the Department of plant production, selection and bioenergetic cultures of the Vinnytsia National Agrarian University (21008, Vinnytsya, Soniachna Str. 3).
Shevchuk Oksana Anatoliyvna – PhD of Biological Sciences, Associate Professor of department of of Biology, Vinnytsia State Pedagogical University named after Mikhail Kotsyubinsky (21001, Vinnitsa, Ostrozkogo St. 32)
Knyazyuk Oleg Viktorovich – PhD of Agricultural Sciences, Associate Professor of the Department of Biology, Vinnitsa State Pedagogical University named after Mikhail Kotsiubynsky (21100, Vinnitsa, Ostrozky St., 32)
The article presents the results of research to assess the impact of technological methods on the productivity of single and compatible crops of sugar sorghum with soybeans, and in particular the methods of sowing and fertilizing. The main organ of the plant that absorbs the most solar energy and has the highest intensity of photosynthesis is the leaf. The use of mineral fertilizers had a positive effect on the total leaf surface. During years of the research with the study methods of sowing and the timing for determination of total leaf surface in areas under mineral fertilizers were applied, it was greater than in areas without fertilizers. Thus, on average for 2018-2019 in the phase of ejection of panicles in areas where sugar sorghum was sown together with soybeans according to the scheme one row of sorghum + one row of soybeans under applying N120P90K120 leaf surface was 30.1 thousand m2/ha, and in areas without fertilizers - 21.0 thousand m2/ha. It was found that the largest area of assimilation surface of leaves on average for two years (41.3 thousand m2 / ha) was in the phase of milk ripeness of grain under sowing two rows of sorghum + one row of soybeans and N120P90K120 consumption. For the efficient use of solar energy is important not only the size of the leaf surface area but also the duration of its active work. Photosynthetic potential is used as an indicator for characterizing of the photosynthetic work of crops during the growing season. The maximum value of the photosynthetic potential of sorghum plants on average for two years of research (2018-2019) was obtained at the end of the growing season (2.81 million m2 days/ha) in areas where it was sown together with soybeans in the method of sowing two rows of sorghum + one-row soybeans and under application of N120P90K120 doses.
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Topics of the Journal:
Program goals (basic principles): questions of technology and efficiency of crop production, scientific and industrial aspects of agronomic specialties, ecology and forestry.
Articles on such scientific problems are accepted for printing:
Plant production, current state and prospects for development.
Agrochemistry and modern aspects of fertilizers and biologically active substances application.
Feed production, current state and prospects for development.
Selection, seed production, seed science and varieties.
Protection of plants.
Soil managment and soil quality improvement.
Forestry and gardening.
Vegetables and mushrooms, current status and development trends.
Ecology and environmental protection.
Theory and history of agricultural sciences and forestry.
Modern directions of development of arable land and forestry.
Innovative and investment activities in agriculture and forestry.
Directions and efficiency of crop production
Bioenergy resources of crop production and forestry.
Production of renewable energy from biological resources.
Organic farming, the main area of development and production of organic products.
Agriculture and modern crop rotation and soil cultivation.
Horticulture and viticulture.
Processing and storage of crop products.
Beekeeping, current status and development trends.
Contemporary biological research in crop production and forestry.
Progressive technologies of the agricultural complex.
Psychological and pedagogical problems of agrarian education.
The young scientist opinion.
Scientific journal "AGRICULTURE AND FORESTRY" was founded in 1995; it was entitled as Bulletin of Vinnytsya State Agricultural Institute.
In 2010-2014 was enritled as Collection of scientific works of Vinnytsia National Agrarian University.
It has been named as Agriculture and Forestry since 2015.
Listed in the updated list of scientific professional editions of Ukraine on agricultural sciences under the name Agriculture and Forestry (Order of the Ministry of Education and Science of Ukraine of May 16, 2016; No. 515).