A Qualitative Land Suitability Assessment in Gypsiferous Soils of Kerman Province, Iran 1

Abstract: The suitability is the aptitude of a given type of land to support a defined use. The process of land suitability classification is the appraisal and grouping of specific areas of land in terms of their suitability for a defined use.This research was performed to study of properties of gypsiferous soils and land suitability evaluation for agronomic productions in the study area. At first, the land maps were studied, then 35 farmlands were chosen, they had gypsic horizon and were scattered in the total plain. Then one profile in each farm was described and catch the samples from all horizons. The total gypsum characteristics, using agricultural instruments and applying of different inputs were studied. Land characteristics for example: salinity, acidity, Sodium Absorption Ratio (SAR), Cation Exchange Capacity (CEC), gypsum content, calcium carbonate content, texture and climate were used to classification of land suitability and land utilization types such as wheat, barely, alfalfa, maize, sugarbeet and potato were studied. meanwhile, plant and climate tables were gathered by sys and givi. The results show that the maximum and average of soil gypsum was 31% and 12% respectively. it is one of the most limitation for crop production. According to key to soil taxonomy(2006), the gypsic and cambic horizons were classified in aridisols and entisols. Parent materials, climate, microrelief (topography), physiography and pendant shapes effect the gypsum formation in the studied area. Investigation and qualitative reviewing of lands show that land suitability have a range of changes in classes from S2 to S3 for wheat with the limitations of gypsum in soils and texture, from S2 to S3 for barley with the limitations of gypsum in soils and texture, from S2 to N2 and S3 to N2 for potato with the limitations of soil acidity and gypsum, and S2 to N1 with the limitation of soil`s texture for sugarbeet, from S2 to N2 and S3 to N2 for alfalfa with the limitations of soil`s acidity and gypsum and topography and from S2 to N2 for onion with the limitations of soil`s gypsum and acidity, respectively. researches show that the average of yield in different production in gypsic and non-gypsiferous soils are different

Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum