THE EFFECT OF FERTILIZERS AND OSMOTIC PRESSURE ON GERMINATION
[摘要] Resultsofgerminationstudieswithcanningcorn,fieldbeans,andsugarbeetsatthreesoilmoisturelevelsandunderfivefertilizertreatments,alongwiththeresultsofgerminationofsugarbeetsatiso-osmoticconcentrationsofmannitolandammoniumnitratesolutions,arereported.Themoisturelevelsalonehadnosignificanteffectonthegerminationofanyofthecrops.Moisturelevelsincombinationwithnitrogenfertilizersreducedgermination,andthereductionbecameprogressivelypronouncedwithdecreasingmoisture.NitrogencausedagreaterreductionthanmannitolorP2O5.Withonlyone-quarteroftheavailablemoistureinthesoil,thenitrogentreatmentsresultedinvirtuallynogerminationofanyofthethreecrops.Thereweresignificantdifferencesinresponsepatternamongspecies,withcanningcornbeingtheleastsensitiveandfieldbeansshowingthegreatestreductionduetofertilizerdamage.Resultsindicatethatnofertilizershouldbeplacedincontactwithbeanseeds.Thehighly...
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[效力级别] [学科分类] 农业科学（综合）
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