Pullman herald. [volume] (Pullman, W.T. [Wash.]) 1888-1989, 1914-04-24


No III of this Station This report an eghypape bnla
tin with inserted graphical chart divided into two
the Chemical Composition of Wheat" and Part II line
Selection Breeding for Variation of Nitrogen Content Of
Wheat
The heading under Part l. is further subdvided into .
Review of Investigations Concerning the Composition If
wheat; Relation of Climate to Composition of wheat
Influence of Soil Composition Influence of Total Animal
Rainfall Influence of Sunlight Influence of Length of
Growing Season Influence of Length Period of Kernel
Formation ; influence of Transfer of Seed" While parI
II is subdivided follows Breeding Wheat for Improve
ment in Composition Variability Nitrogen Content OF
wheat Experiments in Breeding for Chance
of Nitrogen Content of Wheat
part Investigations have already been published
as general bulletins Nos 81 81 100 and 1922 summarized
in popular bulletins Nos g. 20 and 49, and consequently only
summary such work has been published in Station
bulletins will be reviewed in this popular edition
Part Influence of Soil Composition At this Station
series of Investigations undertaken determine the COM
position of grain grown different types soil under the
climatic conditions. For this experiment localities
were selected viz: Rtzvile and Pullman where he CONNIE
of grain known vary considerably yet the soil
from the localities of the general geological
origin but differed in their organic and nitrogen content
Small staked off each experimental tract and
each inch layer removed and
Rtzve and Pullman were transferred each to the other
locality and relatively placed original position as
possible Wheat the transferred and adon-
inc ndisturbed soil at the two places The two Years nves
CATION showed that the soil had very influence on the
composition of the them, and similar
the results obtained by LeClerc in a extended nvesga-
ton In three different states in the Union
Influence of Sunlight There is some meager evidence in
literature that grass shaded by and the leaves
sugar beet grown dfused might effected their
chemical composition The influence however rainy cloudy
compared sunshny upon the composition
farm crops has only been investigated this Experiment
Station In these experiments different kinds of crops
studied BY shading wheat plants with 16ounce duck
just at the bossomng period it possible with excep
ton of nine trials the nitrogen protein and
mineral contents in the grain when compared the
wheat grown in direct sunlight The average difference
nitrogen composition approximately about 10 per
favor of the shaded the unshaded The differences OBJ
served for starch content less marked
Influence of Length of Growing Season 1t is generally
recognized that fall grain develops into heavier and pumper
Kernels OF lower nitrogen than spring grams The reasons Tor
such variations attributed the length of the growing
season The mild winter weather this state made 1t possible
TO study this problem with the same wheat both 1aI and
spring seedlings at four different places with the results that
the longer for the development of the fall seeding did
produce plump kernels of lower nitrogen content than
was found to be the case with the spring seeding
Influence of Length of Period of Kernel Formation With
the progress of the study of the influence of the growing
son. became evident that the composition of the grain was
influence more by length of time required for the develop
mnt of the kernels than by the total length OF the grow
ing period of the plant This particularly noticeable with
Wheats OF low and high nitrogen selection during the unusual
weather conditions for the year 1909 when the winter Wheats
rpened rapidly resulting in fall wheat of higher nitrogen
than was the with the spring selection These results led
to more extended investigation by Mr.. E. B. Stookey who
succeeded working out problem on one variety OF plant
which to be of considerable Importance VIZ GORE
aon Of number of days of with composition
OF resulting grain He selected for his work SIX plants IN eacn
OF two the nursery and noted the time required 1o
the complete development of the kernels total number oil
~ spikes The results for number weight and nitrogen con
tent In the kernels developed each head together with the
number of days required for the development may be sum
marzed follows 1.-The weight OF the kernei
varies directly with the length of the development PERIOD
while the per of nitrogen nverey with the eng
OF this period"
influence of Tranfer of Seed 1t common bellet among
growers merchants and mes of wheat that wheat grown
continuously in locality will run out or result III un-
profitable yields The introduction OF stock has Ogen
pracced to these Objectionable tendencies ne
Gently articles have appeared stating in full the advantages to
De gained by introducing high gluten variety las turkey
ned from other One of the cher reasons gwen
that the quality of the new will continue its hereditary
tendencies and this way improve the quality OF variety III
Locality where inferior quality grew before lhat Tue
quaty or composition of the stock does not
continue to be superior that locally grown can De seen
the experiments conducted this phase OF the subject at w
place The experiment is limited to variety selected Io
ten different localities The variety used this STUDY was
Due Stem considered by mers generally to be an eAce
milling wheat and selected varied considerably IN conP
ston These selections of Blue Stem were grown uue
nursery control conditions continuously for three years az
quincy Ritzvle Pullman where the variations IN
compared to other very different Inc results
famed however, clearly demonstrate that the qualy ga
regardless of the composition the original selecuon
the cnndtinns It there