Show 1 t I Amount o. o ol 01 Nitrogen Necessary Depends on Several Factors Scientists at Utah State University University Uni Uni- have Indicated that handling handl ing fertilizer requirements of spring grains can be done In several several sev sev- eral ways In the past animal manure was waa used to supply the needed plant nutrients With Increased increased In in- creased Intensity In farming currently cur- cur In practice its Ita no longer possible to obtain enough manure tl take care of these needs As Asa a II result It has been necessary to resort to commercial ers Nitrogen Supply A practice that Is followed by farmers farmer to supply nitrogen which la the plant growth element element ele ele- ment rhent n needed ed d by grains Is to follow follow fol fol- low alfalfa tta with small grains Wh When n alfalfa Is plowed up the nitrogen fixing organisms In the nodules nodules' remain on the plant roots decompose and release nitrogen nitrogen nitrogen nit nit- rogen to tile the new crop As a So result re reo I I sult euIt when alfalfa has been plowed plow plow- ed up and spring grain planted the nitrogen level Jevel of that soil 1 la is 1 usually relatively high the first year Very Very often often the amount of nitrogen nitro nitro- gen supplied by the alfalfa crop cropIs Is 18 adequate to take care of a good crop of grain Normally a residual resi resl dual effect will be gotten the second year following the plowing plowIng plow plow- ing out of alfalfa However this is depleted primarily at that time here 1 alfalfa Is not used in rotation or where the grain crop cropis is planted several years beyond I Ithe the time the alfalfa Is plowed I out then it becomes necessary to apply nitrogen fertilizer When a 8 nitrogen fertilizer fertilizers is 16 applied to small grains usually an Increase in yields results However since a 8 plant is more vigorous it grows more lush and the problem of lodging is acute Grain Requirement Stiff varieties of grains should be used in order to avoid this problem The amount of nitrogen nitrogen nitrogen nitro nitro- gen to be applied to small grains will be Influenced in part by the amount of water available and also by the amount of residual nitrogen present In the soil Boil Normally Normally Normally Nor Nor- mally the range would be something something something some some- thing on the order of 50 to pounds of available N breaker This can be supplied with pounds of ammonia nitrate or orsome orsome orsome some pounds of ammonia sul sul- phate The nutrient requirement or or small grains in In Utah is primarily primarily prim prim- limited to that of nitrogen Nitrogen supplied from como com j mercial f fertilizer usually is used up the first year It is applied Residual effects with nitrogen are relatively small If they exist at all It is necessary to plan the nitrogen requirements of small grains each year and not rely on a arf rf residual effect left over from the previous previous' years One exception to this would be with the growl growing g got of ot small grains following a crop of sugar beets in which considerable consider able nitrogen usually remains Inthe Inthe in inthe the soil soli A number of trials have been conducted over the past 10 years to determine the fertility requirements requirements requirements require require- ments of small email grains on dry lands These studies have shown that most of our state is lacking In available water precipitation Where precipitation is favorable nitrogen application on small grains on Ute tire dry lands has been relatively successful Rates for dry land winter wheat will be on the order of 40 0 pounds per acre |