introduction: citrus are one of the important orchard fruit production that after banana is second in production at the world level and every year, chemical fertilizers having most important role in increasing crops productions, but in long application of fertilizers cause soil destructions and polluting underground water. also soils of dry regions are very poor in organic matter level. nowaday...

A field experiment was conducted on the Effect of phosphorus fertilizer and seed rates growth yield common bean (Phaseolus vulgaris L) at Farm agriculture faculty Kunduz University during spring season 2023 to determine optimum for maximum in northeast Afghanistan (Kunduz province). The treatment consists three levels (0kgP2O5ha-1, 40kgP2O5ha-1 80kgP2O5ha-1) four combined (125 kgha-1, 150 175 k...

The thermal reaction of trans-1-methyl-2,3-diphenylaziridine (trans-1a) with aromatic and cycloaliphatic thioketones 2 in boiling toluene yielded the corresponding cis-2,4-diphenyl-1,3-thiazolidines cis4 via conrotatory ring opening of trans-1a and a concerted [2þ 3]-cycloaddition of the intermediate (E,E)-configured azomethine ylide 3a (Scheme 1). The analogous reaction of cis-1a with dimethyl...

hydrogenation reaction with n-heptane on pt/al2o3 catalyst was investigated under the steady state condition in a fixed bed reactor. the catalyst was prepared under a variety of conditions, but the one chosen was non-acidic that is not considered a hydrocracking catalyst. the main objective was to vary the selectivity of n-heptane as a function of reaction variables especially the partial press...

Hydrogenation reaction with n-heptane on Pt/Al2O3 catalyst was investigated under the steady state condition in a fixed bed reactor. The catalyst was prepared under a variety of conditions, but the one chosen was non-acidic that is not considered a hydrocracking catalyst. The main objective was to vary the selectivity of n-heptane as a function of reaction variables es...

Plastic UV reßective mulch (metalized mulch) and wheat straw mulch delayed colonizationbyBemisia argentifoliiBellows&Perring and the incidenceof aphid-borneviruses in zucchini squash. No insecticides were used in either mulch treatment. The mulches were compared with a preplant treatment of imidacloprid and an untreated, unmulched control. In 2000, yield ofmarketable fruit in the plastic and st...