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Hayes and Garber - Cucurbit Breeding

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FIELD PLOT TECHNIC 63<br />

hamper a shorter one, or a vigorous grower may inhibit one that<br />

grows more slowly. The existence of competition between adjacent<br />

strains or varieties has been definitely proved at several<br />

experiment stations. The work of Kiesselbach (1918) at the<br />

Nebraska Station is particularly illuminating on this point.<br />

Kiesselbach compared competition between adjacent single row<br />

plots <strong>and</strong> adjacent plots each consisting of from three to five rows.<br />

The yield of border rows was in some instances included in<br />

the yield of the blocks. His results are summarized in Table.<br />

XIV.<br />

TABLE XIV. SUMMARY OF RELATIVE GRAIN YIELDS OF VARIETIES TESTED<br />

IN SINGLE-ROW PLOTS AND ALSO IN BLOCKS CONTAINING<br />

SEVERAL Rows<br />

Varieties compared in alternating rows<br />

<strong>and</strong> in alternating blocks

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