Results 11 to 20 of about 5,971,343 (292)

The Effect of Tillage Method on the Nutrient Regime of Soil during the Growing of Trifolium pratense

open access: yesActa Technologica Agriculturae, 2023
The article presents the results of studying the influence of tillage methods on the number of bacteria and fungi in the arable soil layer, nutrient indicators, and, consequently, the yield of Trifolium pratense.
Dudar Ivan   +6 more
doaj   +1 more source

Determination of the fractional composition of the green mass of amaranth

open access: yesProceedings of the Voronezh State University of Engineering Technologies, 2023
Meeting the population's needs with high-quality food products is one of the main objectives of agricultural policy. Due to the high import dependence in feed production, the development of new domestic high-protein feed additives that ensure the production of high-quality, dietary and biosafe products is a current area of research.
S. V. Obraztsova   +5 more
openaire   +1 more source

Factors of increasing alfalfa yield capacity under conditions of the forest-steppe

open access: yesAgraarteadus, 2021
It was found that southern ecotype alfalfa (Medicago sativa) of variety 'Angelica' adapted to the soil and climatic conditions of the Forest-Steppe and was not inferior in yielding capacity to variety 'Rosana' which provided maximum indices in the phase ...
Maksym Kvitko   +7 more
doaj   +1 more source

Economic efficiency of cultivation of agricultural crops on green mass

open access: yesНовые технологии, 2022
The purpose of the scientific work was to assess the economic efficiency of cultivating red clover and mixed soybean and corn crops for green mass, depending on the use of increasing doses of nitrogen fertilizers.
O. A. Blagopoluchnaya, N. I. Devterova
doaj   +1 more source

Efficiency of winter barley cultivation methods for herbage for bulk feed conservation

open access: yesНовые технологии, 2023
The article presents the results of the economic and bioenergetic assessment of winter barley cultivation methods for harvesting bulky fodder. In a short-term experiment the effect of five levels of mineral nutrition on two methods of tillage in the crop
N. I. Devterova
doaj   +1 more source

Ecological testing of different selective numbers of meadow clover in the Smolensk region

open access: yesАграрная наука Евро-Северо-Востока, 2018
Prospective selective material of the double-cut diploid meadow clover (Trifolium pratense L.) was tested. The aim of the research was to identify selective numbers mostly adapted to the ecological conditions of the Smolensk region. Six selective numbers
O. V. Kurdakova, E. S. Rekashus
doaj   +1 more source

Green's function Zero and Symmetric Mass Generation

open access: yes, 2021
It is known that, under short-range interactions many topological superconductors (TSC) and topological insulators (TI) are trivialized, which means the boundary state of the system can be trivially gapped out by interaction without leading to symmetry breaking or topological ground state degeneracy.
Xu, Yichen, Xu, Cenke
openaire   +2 more sources

Greenness of chemical reactions – limitations of mass metrics [PDF]

open access: yesGreen Chemistry Letters and Reviews, 2013
Abstract The influence of reaction conditions (yield, excess of stoichiometric reagent, molecular weights of reagents, and mass of auxiliary materials and solvents) on the values of several green chemistry mass metrics (E-factor, mass intensity, atom utilization, relative mass efficiency, and element efficiency), for reactions with 1:1 and 1:3 ...
M. Gabriela T.C. Ribeiro   +1 more
openaire   +1 more source

A Green’s Function Proof of the Positive Mass Theorem

open access: yesCommunications in Mathematical Physics
AbstractIn this paper, a new proof of the Positive Mass Theorem is established through a newly discovered monotonicity formula, holding along the level sets of the Green’s function of an asymptotically flat 3-manifolds. In the same context and for $$1<p<3$$ 1 < p
Agostiniani, Virginia   +2 more
openaire   +6 more sources

Influence of irrigation and fertilisation on yield and quality of green mass of maize in soil-climatic conditions of the Republic of Tatarstan [PDF]

open access: yesBIO Web of Conferences
The present work deals with the issues of comparative evaluation of cultivation of hybrid maize Ross 140 CB on rainfed and irrigated plots with the application of calculated rates of mineral fertilisers for the planned yield of green mass 30, 40, 50 t/ha
Safiollin F.N.   +4 more
doaj   +1 more source

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