. A guide to the experimental farms and stations ... the seeding isconcluded on the following day or days, as expeditiously as maybe. Different dates of seeding produce marked results, inthis climate, on the yield of most kinds of grain. Observations are made, in the plots, on length and strengthof straw, time of ripening and any other points of special and quality of grain are determined after threshing. Since it is impossible, even under the most favourable con-ditions, to obtain perfectly trustworthy information in oneseason, in regard to the relative merits of similar variet
. A guide to the experimental farms and stations ... the seeding isconcluded on the following day or days, as expeditiously as maybe. Different dates of seeding produce marked results, inthis climate, on the yield of most kinds of grain. Observations are made, in the plots, on length and strengthof straw, time of ripening and any other points of special and quality of grain are determined after threshing. Since it is impossible, even under the most favourable con-ditions, to obtain perfectly trustworthy information in oneseason, in regard to the relative merits of similar varieties, theaverage results of a series of years are utilized whenever com-parisons are being made. In most .cases, new varieties arekept in the plots for at least five years, unless they clearlyshow some serious defect. (2) Importation of New Sorts. The introduction from abroad of varieties new to Canadahas been in the past a very valuable feature of the cerealinvestigations, but this has become less important in certain DOMINION EXPERIMENTAL FARMS 37. 38 DOMINION EXPERIMENTAL FARMS respects as the work has advanced. In recent years, no prom-ising kinds of spring wheat and scarcely any of six-row barleyhave been obtained; but of two-row barley and oats someinteresting new sorts have been imported which are likely toprove of value in Canada. While the foreign varieties hitherto tested have very oftenbeen found somewhat unsuited to Canadian conditions, severalof them have been utilized as parent sorts for cross-breedingpurposes and have in this way contributed largely to the pro-gress of the work. (3) Selection. While the progress which may be looked for by mereselection has undoubtedly been seriously overestimated in somequarters, it is, nevertheless, a valuable branch of experimentalwork and one from which good results are being obtained, notonly in regard to the general appearance of the crops, but inmore important respects also. As most commercial grains are lacking in uniformit
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