Evaluación de tres enraizadores comerciales en la producción de plántulas de tomate indeterminado (Solanum lycopersicum (L.) Lam)

Objective: To evaluate the development of undetermined tomato seedlings under protected conditions, applying three rooters and a witness to increase the production of the culture in the region. Design/methodology/ approach: it was employed through an experimental design by blocks completely at random, which consisted on four treatments belonging to each one of the blocks, where each block belonged to four unicel trays of 200 cavities of BM2 substratum, with four repetitions each one, taking 15 experimental units for treatment, making a total of 60 experimental units, having a total of 240 tomato seedlings in the whole experiment. Results: As a result, it was obtained that the Phyto Root rooter had a great effect in the height development, stem thickness, number of leaves, aerial biomass and root ball weight, important parameters that a seedling must have for its development and growth at the transplantation moment to the field. Study limitations/implications: The agronomic handle from the sowing is necessary to be uniform in all the treatments and the repetitions, in order to obtain better results due to the rooters effect. Findings/ conclusions: To obtain good quality seedlings in the moment of transplantation to the field, it is recommended to the company and to the seedling producers to employ the Phyto Root treatment, due that this was the one with the best response.Objetivo: Evaluar el desarrollo de plántula de tomate indeterminado bajo condiciones protegidas, aplicando  tres enraizadores  y un testigo para aumentar la producción del cultivo en la región. Diseño/metodología/aproximación: se utilizó bajo un diseño experimental en bloques completamente al azar, el cual consistió de cuatro tratamientos correspondiendo a cada uno de los bloques, donde cada bloque pertenecía a cuatro charolas de unicel de 200 cavidades con sustrato de BM2, con cuatro repeticiones cada uno, teniendo 15 unidades experimentales por tratamiento, sumando un total de 60 unidades experimentales, teniendo un total de 240 plántulas de tomate por todo el experimento. Resultados: Como resultado se obtuvo que el enraizador de Phyto Root  tuvo un gran efecto en cuanto al desarrollo de altura, grosor de tallo, numero de hojas, biomasa aérea y peso del cepellón, parámetros importantes que debe tener una plántula para su desarrollo y crecimiento al momento de trasplante a campo. Limitaciones del estudio/implicaciones: El manejo agronómico desde la siembra en charolas, es necesario que sea uniforme en todos los tratamientos y las repeticiones para tener mejores resultados en cuanto el efecto de los enraizadores. Hallazgos/conclusiones: Para obtener plántulas de buena calidad en el momento de trasplante a campo se le recomienda a la empresa y a los productores de plántulas utilizar el tratamiento de Phyto Root, ya que fue la que mejor respuesta tuvo

Search for leptophobic Z ' bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV

Peer reviewe

Search for black holes and other new phenomena in high-multiplicity final states in proton-proton collisions at root s=13 TeV

Peer reviewe

Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search

Peer reviewe

Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks

Peer reviewe

Measurement of the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at √S^{S}NN = 5.02 TeV

The second-order Fourier coefficients (υ$_{2}$) characterizing the azimuthal distributions of Υ(1S) and Υ(2S) mesons produced in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV are studied. The Υmesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb$^{-1}$. The scalar product method is used to extract the υ$_{2}$ coefficients of the azimuthal distributions. Results are reported for the rapidity range |y| < 2.4, in the transverse momentum interval 0 < p$_{T}$ < 50 GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured υ$_{2}$ values for the Υ mesons are found to be consistent with zero

Measurement of prompt D0^{0} and D‾\overline{D}0^{0} meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at root SNN\sqrt{S_{NN}} = 5.02 TeV

The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapiditydependent difference (Av2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (uc) and D0 (uc) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of Av2. The rapidity-averaged value is found to be (Av2) = 0.001 ? 0.001 (stat)? 0.003 (syst) in PbPb collisions at ?sNN = 5.02 TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D0mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry. ? 2021 The Author. Published by Elsevier B.V. This is an open access article under the CC BY licens

Measurement of the Y(1S) pair production cross section and search for resonances decaying to Y(1S)μ⁺μ⁻ in proton-proton collisions at √s = 13 TeV

The fiducial cross section for Y(1S)pair production in proton-proton collisions at a center-of-mass energy of 13TeVin the region where both Y(1S)mesons have an absolute rapidity below 2.0 is measured to be 79 ± 11 (stat) ±6 (syst) ±3 (B)pbassuming the mesons are produced unpolarized. The last uncertainty corresponds to the uncertainty in the Y(1S)meson dimuon branching fraction. The measurement is performed in the final state with four muons using proton-proton collision data collected in 2016 by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9fb$^{-1}$. This process serves as a standard model reference in a search for narrow resonances decaying to Y(1S)μ$^{+}$μ$^{-}$ in the same final state. Such a resonance could indicate the existence of a tetraquark that is a bound state of two bquarks and two b̅ antiquarks. The tetraquark search is performed for masses in the vicinity of four times the bottom quark mass, between 17.5 and 19.5GeV, while a generic search for other resonances is performed for masses between 16.5 and 27GeV. No significant excess of events compatible with a narrow resonance is observed in the data. Limits on the production cross section times branching fraction to four muons via an intermediate Y(1S)resonance are set as a function of the resonance mass