KEI.I.OGG*S GRBAt CF^ OF SXRAWBBRRIES 
R..M.K6I.LOGO CO. THREE RIVERS. MICH. 
Kellogg Pedigree Plants and How 
They Are Produced 
A JUICY, tender sirloin costs more than a chuck steak; silver although it glitters is not as valuable 
as gold and you would expect to pay more for a wool garment than one of a lower grade fabric. 
These comparisons emphasize the fact that any article of superior quality — whether food, 
clothing, luxury, or any commodity — even though sold at a higher price, invariably proves the best and 
most economical investment. 
Ranking as 'top-notchers' in every test, dependable as Mother Nature herself and yielding berries 
of a quality unsurpassed in delicious flavor and smooth texture by anything in the fruit or vegetable 
kingdom, it is not surprising that Kellogg Pedigree Plants are the choice of such a vast majority of 
strawberry growers. Many of these growers too are shrewd, seasoned business men and women whose 
intimate contact with industry has taught them the folly of seeking bargains and the wisdom in investing 
only where quality is assured. Theirs is indeed a wise discrimination in selecting Kellogg Pedigree Plants 
for nowhere is the lack or presence of quality more convincingly shown than in strawberry plants at 
fruiting time. 
We of course claim superiority for Kellogg Pedigree Plants. This you would naturally expect and 
our strongest claims would count for naught were they not verified by thousands who know and grow 
them. Throughout this book we have reproduced reports selected at random as representative of many 
which have come to us from growers whose interest in our plants exists merely because they have found 
them in every way the most profitable and desirable. If better plants were to be had they would 
readily plant and endorse them. 
Reasons for Superiority 
For every result there must be a corresponding cause. We have referred to the superior qualities 
of Kellogg Pedigree Plants. Now we are going to explain the reasons why these plants are superior 
both in plant growth and berry production. 
First Step in Crop Rotation 
Follow us please through our regular process of crop rotation and soil preparation beginning just 
as we have finished digging and shipping a crop of Kellogg Pedigree Plants in May. 
The ground on which these plants were grown is first plowed deeply (eight to nine inches) after 
which it is harrowed repeatedly both with spring tooth and disc. Following this it is packed with roller 
and the result is a perfect seed bed thoroughly pulverized the full depth of plowing. All vegetation 
which remained at the time of plowing has been cut up and crushed so as to decay rapidly. 
The ground is then seeded to alfalfa and remains in this crop for three years. The first two years 
it is cut for hay. The third year the first crop is mowed and allowed to re- 
main on the field as a mulch just as it falls from the mower blade. The second 
growth comes up through this mulch and the entire crop is then plowed under. 
Value of Legumes 
Alfalfa is a legume or nitrogen gathering plant. An examination of the 
roots of leguminous plants reveals numerous bacteria nodules which vary in 
size, shape and number according to the kind and age of the plant. A very 
close relation has been found to exist between leguminous plants and the bac- 
teria existing within these nodules. The plant furnishes the nourishment re- 
quired by the bacteria while the bacteria in turn draw nitrogen from the air 
and render it available for the use of the plant. Nitrogen is essential to 
plant life. The plowing under and resulting decay of legume plants re- 
leases vast quantities of nitrogen into the soil where it may be absorbed 
and assimilated by succeeding crops. 
The accompanying illustration shows the nodule development on the 
roots of a two-months-old legume plant. 
Other Rotation Crops 
Following the alfalfa, we sow a mixture of rye and vetch which is plowed 
under when the rye is in head and the vetch in bloom as at this time the 
vetch (which also is a legume) attains its greatest development of nitrogen 
nodules and the rye its greatest humus value. After this has been incorpor- 
ated with the soil and a pulverized seed bed formed ( Continued on Page U. ) 
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