Tag Archives: oilseed radish

xxx Ya.H. Tsytsiura
Matrix quality variability of oilseed radish (Raphanus sativus L. var. oleiformis Pers.) and features of its formation in technologically different construction of its agrophytocenosis
Abstract |

Matrix quality variability of oilseed radish (Raphanus sativus L. var. oleiformis Pers.) and features of its formation in technologically different construction of its agrophytocenosis

Ya.H. Tsytsiura

Vinnytsia National Agrarian University, Faculty of Agronomy and Forestry, Sunny street, 3, UA21008 Vinnytsia, Ukraine
Correspondence:yaroslavtsytsyura@ukr.net

Abstract:

Overview of the formation of matrix variability of oilseed radish seeds at two levels: within a single pod and within the generative part of the plant, given the presence of vertical layering in the placement of fruit elements. The peculiarities of formation of variation component of morphological parameters of seeds from different zones of inflorescence were estimated, basing on their electrical scanning for oilseed radish agrophytoconosises of different technological construction and sowing rate against the background of four options of mineral nutrition (without fertilizer to the level 90 kg ha-1 with an equal interval of 30 kg ha-1 of the primary material). The results of the value of matrix variability in morphological and weight characteristics were grounded on the basis of the analysis of the structure of selected seed fractions and their intra-group variation. The main features of formation of morphometric variability of seeds from different zones of inflorescence depending on different technological construction were formulated.

Key words:

, , , , ,




2217-2244 Y. Tsytsiura
Formation and determination of the individual area of oilseed radish leaves in agrophytocenosises of different technological construction
Abstract |

Formation and determination of the individual area of oilseed radish leaves in agrophytocenosises of different technological construction

Y. Tsytsiura

Vinnytsia National Agrarian University, Faculty of Agronomy and Forestry, Sonyachna street 3, UA21008 Vinnytsia, Ukraine
Correspondence: yaroslavtsytsyura@ukr.net

Abstract:

For the successful control of the production process, determining the leaf area is a basic requirement. In this context, it is important to determine the regularities of leaf formation within the plant, considering technological parameters of agrophytocenosis construction. These are the important issues covered in this paper based on the years of research conducted between 2013 and 2018 on three cultivars of oilseed radish: one of the poorly explored members of the cruciferous family of multipurpose use. The conducted researches allowed to distinguish features of longline leaf formation of oilseed radish cultivars and mathematically describe features of formation of their area, length and width at the early flowering phase according to the Richards growth curve. The peculiarities of formation of individual leaf area depending on the combination of the variations of the stand density and fertilization in the context of the recommended process regulation of oilseed radish cultivation are also determined. It has been proved possible to use a non–destructive method of determining the individual leaf area of oilseed radish, basing on the evaluation of 29 models, using the following formula S = 7.9316–2.3613L + 0.6897 (LW)+0.0458L2–0.0005 (LW)2 (under the following test parameters of the model: R2 0.9106; RMSE 9.75; d 0.956; BIAS –0.1523).

Key words:

, , , ,