Modular-vitality and ideotypical approach in evaluating the efficiency of construction of oilseed radish agrophytocenosises (Raphanus sativus var. oleifera Pers.)
Yaroslav H. Tsytsiura (Faculty of Agronomy and Forestry, Vinnytsia National Agrarian University, 3 Sonyachna St, 21008, Vinnytsia, Ukraine, yaroslavtsytsyura@ukr.net)
The paper provides the results of a multi-year study of the peculiarities of phytocoenology of oilseed radish agrophytocenosises using various methods of its condition assessment and studying the tactics of plant vitality strategy. A comprehensive assessment was made of the impact of changes in inter-row spacing width, sowing rates and fertilizer on the formation of different plant ideotypes, the variability of their morphological features and general indicators of viability. Three ideotypes of oilseed radish plants in the vertical study of agrophytocenosises were identified, based on which a detailed analysis of the variability of each group and a statistical assessment of the reliability of its existence was made. The peculiarities of morphological integration of each tier were analyzed and its influence on the formation of the overall field capacity was assessed. Based on the modular and vitality grouping, the efficiency and feasibility of combining different stand density and fertilizer options in the range of 30–90 kg of primary material per 1 hectare were evaluated. Due to the application of regression analysis, the impact of climatic conditions on the formation of different morphological types of plants and the nature of relationships between oilseed radish plants in cenosises of different stand densities with different fertilizer options was assessed. The main perspective directions of further research on the peculiarities of the creation of highly productive and highly adaptive agrophytocenosises of oilseed radish are outlined.
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