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<br />~-. <br />(Jl <br />,.-, <br />u <br /> <br /> <br />- <br /> <br />,,-:: <br /> <br />'r <br /> <br /> <br />" <br /> <br /> <br />Attention ....ill be gin'll to early wall'r applications to produce full water <br />capacity in tilE' ~oil carly in the season. <br /> <br />The next sen?ral pages contain graphs of the leaf analysis from the Davis <br />orchard. ~.Ionthly analysis ,.as pC'rformcd br the Colorado State University at <br />the Austin experimental station. From the graphs of the le3f analysis the <br />relative amounts of elements can be seen at a ~lancc. <br /> <br />Colorado nlltritiOJl;).] standards for peaches have been developed by C.S.U. <br />for the month of July only. You will note that the nitrogen content in many <br />rases .....as helm. the stand:n'u for July. ant' Tilust bear in mind that nitrogen <br />additions are risky after .July and I>'C arc only no... beginning to get some idea <br />of the amounts of nitrogen sufficient to obtain the desired results. One <br />quarter of a pound of nitrogen ....as added per tree last year ....hieh was the same <br />amount adued :It the :immerman place. It is certain that there I..as a good deal <br />..,f residual nitrogen helJ o\'er at the :immerffian place from the year before. <br />The plan this year is to add 011(' third of a pound per tree as early in the <br />::;pring as po::;::; ible :lnd then on the basis of the !>-lay leaf sample I..e may add a <br />little more. The ~.Iay If.'~lf .:.ample should give 115 about .1.2 to ~.6'~ nitrogen <br />though ...'e may he able to \J5e .. higher nitrogen if the phosphorous and <br />potassium are in balance. <br /> <br />..\ high nitrogen content b:; de::.irable in the spring to promote maximum <br />horticultural pcrforman.::e. HOl,o;c\'cr. the nitrogen content should end the season <br />about ::% to insure ...'inter hardiness. .\cC'ording to custom ".,e have added the <br />nitrogen in the fall jU~H before the system was turned off; ho....ever. because <br />of the ....inte1' hardine5s te~HS conJuct"d by Dr. Hatch at the Orchard ~lesa unit <br />I.e have decided on early spring fert! li:er applications. Following is an <br />excerpt fro." his I."inter hardiness study. The trickle irrigation samples <br />I.ere taken from the :::il1\.'ncrman orchard. <br /> <br />_ 4 _ <br />