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Tree fruits for Iowa
This bulletin is intended to assist Iowa orchardists in the selection of satisfactory tree fruit varieties either for home or commercial production. By consulting the descriptions and discussions herein given and by informing himself as to the present status of varieties already grown in his locality, the prospective planter should be in a position to make a selection which will succeed and bring him satisfactory returns. Doubtless future years will place different valuations upon many of the varieties discussed for Iowa planting
Varieties of Tree Fruits for Iowa Planting
This circular is intended to assist Iowa orchardists in the selection of satisfactory tree fruit varieties either for home or for commercial production. By consulting the descriptions and discussions herein given and by informing himself as to the present status of varieties already grown in hi.q locality, the prospective planter should be in a position to make a selection which will succeed and bring to him satisfactory returns. Doubtless future years will place different valuations upon many of the varieties discussed for Iowa planting
Apple breeding: A study of Jonathan crosses
Two hundred seventy-three Jonathan seedlings produced by 11 crosses form the basis of the records in this bulletin.
These studies show clearly that the progenies produced by the different crosses of Jonathan differ or vary in many important characteristics. These variations are attributed to differences in the genetic constitution of the several varieties which were used in combination with Jonathan, and indicate the relative value of these varieties as parents when crossed with Jonathan.
The range of variation in the seedlings of these progenies is generally quite wide both as to tree and fruit. Differences in the horticultural characteristics such as occur in size, form, color, flavor, quality and season of the seedling fruits suggest that multiple factors are concerned, which produce the many variations observed.
Jonathan appears to carry as partially dominant factors for medium and below medium size of fruit, but it evidently carries factors also for large and for small size. Factors for roundish, conic, oblate and oblong fruit forms are present. Jonathan appears to be homozygous for red skin color but is heterozygous for pattern and carries factors for both fine and coarse grained flesh, for juiciness, for both acid and sweet flavor and for very good as well as for poor quality. The factors which control the season of the fruit are evidently complex. Jonathan appears to carry factors for season varying from late summer to late winter but probably carries as dominant the factors for mid-winter season.
It is of importance to observe that the color, size and flavor of Jonathan were recovered occasionally and that these characteristics were combined with the characteristics of the other parent variety.
Colorado Orange produced a higher percentage of fruits of good commercial size than did Salome, Anisim or Roman Stem when crossed with Jonathan. When crossed with Jonathan, Salome produced the highest percentage of fruit rating good and very good, followed in order by Colorado Orange, Anisim and Roman Stem. Late season appeared most often in the seedlings of Colorado Orange and Salome, while Anisim and Roman Stem produced no late season apples. The value of crossing two red apples is shown by the high percentage of good red seedling fruits produced by Anisim and Wealthy when crossed with Jonathan. It is interesting to note that Colorado Orange and Roman Stem produced a high percentage of seedling fruits which were deficient in good red color
Varieties of Tree Fruits for Iowa Planting
This circular is Intended to assist orchardists in Iowa In the selection of tree fruit varieties which will be adapted to locality and suit the purpose of planting, whether It be for home or for commercial production. By consulting the descriptions and discussions herein given and by informing himself as to the present status of varieties already grown in his locality, the prospective planter should be in a position to make a selection which will succeed and bring to him satisfactory returns. Doubtless future years will place different valuations upon many of the varieties discussed for Iowa planting
Is Meyer Zoysia for Iowa?
Meyer Zoysia is a warm-season grass. The lawn grasses commonly used and recommended in Iowa are cool-season grasses. The final answer, however, depends upon what you want in a lawn frass as to care, appearance, etc
Pensively
Pensively, uses toys and solar powered drawing machines to present elements of movement, time, and scale. Each of the works in this exhibition invites or implies action through automation or viewer interaction. The works in this exhibit creates an environment of wonder and excitement that triggers memories of childhood and the pleasure of learning. The works investigate and discuss the responsibilities attained through maturation that keep us from recovering the sense of accomplishment we achieved with play
Good Lawns are Made
Iowa has the soils and climate for good lawns. To be at their best, lawn grasses need adequate feeding, moderate watering in dry weather and a weed control program. Here are some tips and guides for top-shape lawns
Determining the alpha dynamo parameter in incompressible homogeneous magnetohydrodynamic turbulence
Alpha, an important parameter in dynamo theory, is proportional to either the kinetic, current, magnetic, or velocity helicity of the fluctuating magnetic field and fluctuating velocity field. The particular helicity to which alpha is proportional depends on the assumptions used in deriving the first order smoothed equations that describe the alpha effect. In two cases, when alpha is proportional to either the magnetic helicity or velocity helicity, alpha is determined experimentally from two point measurements of the fluctuating fields in incompressible, homogeneous turbulence having arbitrary symmetry. For the other two possibilities, alpha is determined if the turbulence is isotropic
Black Hawk- A New Raspberry for the Midwest
This new raspberyy will be available through Iowa nurserymen this coming spring. This article tells the story of what it\u27s like, what it is and its record, and offers some planting suggestions
Small high-temperature nuclear reactors for space power
Criticality calculations for small, cylindrical, lithium cooled reactors for space power system
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