Improving techniques for cultivating potatoes of the Smolyanochka variety in elite seed production

In our experiments, 2 methods of harvesting tops were used relative to the control (without harvesting): mechanical (mowing) and chemical (desiccation Reglon Super) for 18; 12; 6 days before harvesting potatoes. On average, over 3 years, the yield of potatoes of the Smolyanochka variety ranged from 36.2 to 47.9 t/ha. The highest yield was obtained by mowing and desiccating the tops in 12 days - 47.3-47.9 t/ha and losses of 2.6; 2.2% respectively. Research has shown that mowing and desiccating the tops 12 days before harvesting ensured the yield of the average fraction of 50-48%, respectively, and the formation of healthier tubers. The strength of the peel contributed to the reduction of losses relative to the control during storage by 0.9-4.3% and the incidence of diseases by 0.5-5.0%. The article also shows the economic efficiency of the agricultural practices used. The profitability level of ware potatoes ranged from 69 to 150% and was greatest when the tops were mowed and desiccated 12 days before harvesting

A Search for Correlation of Ultra-High Energy Cosmic Rays with IRAS-PSCz and 2MASS-6dF Galaxies

We study the arrival directions of 69 ultra-high energy cosmic rays (UHECRs) observed at the Pierre Auger Observatory (PAO) with energies exceeding 55 EeV. We investigate whether the UHECRs exhibit the anisotropy signal expected if the primary particles are protons that originate in galaxies in the local universe, or in sources correlated with these galaxies. We cross-correlate the UHECR arrival directions with the positions of IRAS-PSCz and 2MASS-6dF galaxies taking into account particle energy losses during propagation. This is the first time that the 6dF survey is used in a search for the sources of UHECRs and the first time that the PSCz survey is used with the full 69 PAO events. The observed cross-correlation signal is larger for the PAO UHECRs than for 94% (98%) of realisations from an isotropic distribution when cross-correlated with the PSCz (6dF). On the other hand the observed cross-correlation signal is lower than that expected from 85% of realisations, had the UHECRs originated in galaxies in either survey. The observed cross-correlation signal does exceed that expected by 50% of the realisations if the UHECRs are randomly deflected by intervening magnetic fields by 5 degrees or more. We propose a new method of analysing the expected anisotropy signal, by dividing the predicted UHECR source distribution into equal predicted flux radial shells, which can help localise and constrain the properties of UHECR sources. We find that the 69 PAO events are consistent with isotropy in the nearest of three shells we define, whereas there is weak evidence for correlation with the predicted source distribution in the two more distant shells in which the galaxy distribution is less anisotropic.Comment: 23 pages, version published in JCA

Improving techniques for cultivating potatoes of the Smolyanochka variety in elite seed production

In our experiments, 2 methods of harvesting tops were used relative to the control (without harvesting): mechanical (mowing) and chemical (desiccation Reglon Super) for 18; 12; 6 days before harvesting potatoes. On average, over 3 years, the yield of potatoes of the Smolyanochka variety ranged from 36.2 to 47.9 t/ha. The highest yield was obtained by mowing and desiccating the tops in 12 days - 47.3-47.9 t/ha and losses of 2.6; 2.2% respectively. Research has shown that mowing and desiccating the tops 12 days before harvesting ensured the yield of the average fraction of 50-48%, respectively, and the formation of healthier tubers. The strength of the peel contributed to the reduction of losses relative to the control during storage by 0.9-4.3% and the incidence of diseases by 0.5-5.0%. The article also shows the economic efficiency of the agricultural practices used. The profitability level of ware potatoes ranged from 69 to 150% and was greatest when the tops were mowed and desiccated 12 days before harvesting