Photosynthetic activity of Camelina sativa plants depending on technological measures of growing under conditions of Precarpathians of Ukraine

Camelina sativa is a promising oil crop, the yield potential of which is not yet fully disclosed. Interest in ryegrass has been restored in recent years due to oversaturation of crop rotations with cereals, sunflower, as well as increasing demand for vegetable oils of different quality. It also attracts attention due to its unpretentiousness, precocity, stable yield, high plasticity and suitability for different soil and climatic conditions

Invasive plant species and their threat to biodiversity

The problem of the uncontrolled spread of alien plant species matured in the world in the second half of the 20th century, and in recent decades it has become the main threat to the biological diversity of various regions of the world. Prevention of biological Invasions is a new urgent task in the field of nature protection, which determines the relevance of the study. The purpose of the study is to determine and predict the distribution area of invasive plants, based on the use of the following methods: comparative morphological-ecological-geographical, route using determinants and atlases of plants of Ukraine, and the method of structural analysis. It is established that the characteristic features of invasive plant species are very high tolerance to habitat and climatic conditions, high rate of reproduction, simple and effective distribution by wind, water, animals, and rapid growth, which contributes to the displacement of slow-growing plants of other species and uncontrolled spread in the absence of natural enemies and restrictions. A particular danger to the biodiversity of Ukraine is the spread of invasive plant species: Sosnowsky’s Hogweed (Heracleum sosnowskyi), Canadian Goldenrod (Solidago canadensis L), American maple (Acer negundo L.), Red Oak (Quercus rubra), Common Ragweed (Ambrosia artemisiifolia L.), Common Milkweed (Asclepias syriaca L.), Silver Berry (Elaeagnus angustifolia), American pokeweed (Phytolacca Americana), Ecballium (Ecballium elaterium), Common Sandbur (Cenchrus pauciflorus Benth), Wall Barley (Hordeum murinum L.), Jerusalem Artichoke (Helianthus tuberosus), etc. The results of the study are an important scientific and practical basis for developing national and regional strategies for controlling invasive plant specie

An application of analogues of two-sided Kurpel's methods to ordinary differential equation

An analogues of two-sided Kurpel's methods of approximate solution of ordinary differentia lequation that give possibility to get above-linear convergence in the case of nondifferential rightpart are constructed and investigated

The analogs of monotonous methods of Newton

In this article there are investigated close to the method of Newton algorithms for equations with monotone operators

Both-side approximation of solutions of differential equations

Both-side algorithms analogs of the Chaplygin method for ordinary differential equations. Conditions of algorithms squared convergence even in the case of operator nondifferentiability have been established.<br /

Differential inequalities with one-sided Lipshitz property

New results on differential inequalities under assumptions, which are weaker than the Lipshitz conditions, are obtained

On applications of iteration algorithms and Skorobagatko's branching fractions to approximation of roots of polynomials in Banach algebras

Iteration algorithms for approximate factorization of some classes of polynomials with coefficients from a Banach algebra are investigated. These algorithms may be considered as methods of construction of analogues of V.Ya. Skorobagatko's branching fractions in Banach algebras

The analogs of monotonous methods of Newton

In this article there are investigated close to the method of Newton algorithms for equations with monotone operators

Differential inequalities with one-sided Lipshitz property

New results on differential inequalities under assumptions, which are weaker than the Lipshitz conditions, are obtained

Analogues of bilateral Kurpel's methods for differential equations with aftereffect

It is studied analogues of bilateral Kurpel's methods for differential equations with aftereffect in which the right parts tend heteroton. Estimates of convergence of the algorithms established