Open Access. Powered by Scholars. Published by Universities.®

Fruit Science Commons

Open Access. Powered by Scholars. Published by Universities.®

247 Full-Text Articles 388 Authors 25052 Downloads 25 Institutions

All Articles in Fruit Science

Faceted Search

247 full-text articles. Page 1 of 7.

Strawberry Production In South-Eastern Iowa As Influenced By Varieties, Fertilizers And Cultural Practices, Philip Minges, T. J. Maney, B. S. Pickett 2017 Iowa State College

Strawberry Production In South-Eastern Iowa As Influenced By Varieties, Fertilizers And Cultural Practices, Philip Minges, T. J. Maney, B. S. Pickett

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

For many years strawberries have been an important cash crop in southeastern Iowa, particularly in the vicinity of Montrose. Dunlap has been the leading variety grown. The crop has been marketed by a small but unusually well-organized cooperative association known as the Iowa Fruit Company of Montrose, Iowa.

Several years ago the growers began to experience certain difficulties which materially reduced the value of their crop. Disease and drouth lowered yields. The soils devoted to strawberry culture began to show the effects of continuous cropping under the prevailing system of soil management. Prices fell to such an extent that receipts ...


Effect Of Hormodin A, A Growth Substance, On The Rooting Of Cuttings, Marcus A. Maxon, B. S. Pickett, H. W. Richey 2017 Iowa State College

Effect Of Hormodin A, A Growth Substance, On The Rooting Of Cuttings, Marcus A. Maxon, B. S. Pickett, H. W. Richey

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Florists, nurserymen and gardeners are deeply interested in recent discoveries that certain chemical compounds, when absorbed into the appropriate living plant tissues, induce or stimulate the initiation of roots. Depending on species, point of application of the chemical and various environmental conditions, roots appear on stems or leaves at points where roots do not ordinarily arise. The chemicals used have been variously designated by different investigators as growth substances (6), hormones (3), phytohormones (28) and auxins (28). When applied to the rootage of cuttings, these substances may have a wide practical use.

Some of the most effective growth substances are ...


Regeneration In Various Types Of Apple Wood, V. T. Stoutemyer 2017 Iowa State College

Regeneration In Various Types Of Apple Wood, V. T. Stoutemyer

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Two distinct growth phases were demonstrated to exist in apple trees. These phases were closely related to the ease of regeneration of roots on stems. Stem cuttings of wood in the mature phase were very difficult to root without special treatments, while those made from shoots in the juvenile phase rooted very readily.

The juvenile condition was recognized by the thinness of the leaves and small amount of pubescence. Anthocyanin production was abundant in juvenile shoots. In some species of apple the shape of the leaf changed with maturity from an entire to a lobed form.

Shoots having the juvenile ...


Effects Of Tillage And Cover Cropson Muskmelon Production And Food Safety, John Krzton-Presson, Ajay Nair, Angela Shaw 2017 Iowa State University

Effects Of Tillage And Cover Cropson Muskmelon Production And Food Safety, John Krzton-Presson, Ajay Nair, Angela Shaw

Angela M. Shaw

Reduced tillage has been widely adopted in production of agronomic crops for its potential to improve soil health and reduce input costs. Despite this, vegetable growers largely rely on conventional tillage (CT) to incorporate crop residue, control weeds, and prepare a loose seed bed for planting. Conventional tillage may cause reduced water infiltration, lessen soil biodiversity, and increase nitrate leaching, erosion and weed germination. Strip-tillage (ST) only disturbs the soil in a 12-in. strip where the cash crop will be planted, leaving the rest of the field untilled.


Physiological Behavior Of Grimes Golden Apples In Storage, Paul L. Harding 2017 Iowa State College

Physiological Behavior Of Grimes Golden Apples In Storage, Paul L. Harding

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Practically all storage investigators have emphasized the importance of storing apples immediately after they are picked. The reason for this practice is better understood when it is realized that with a rise in temperature there is a corresponding increase in metabolic activity which may remain at a relatively high level for a considerable period. When this occurs apples ripen very rapidly. Placing fruit under temperatures slightly above freezing, however, slows down activity to a minimum, and the life of the fruit is greatly prolonged. A picture, then, of respiratory activity going on within the tissues of the apple, indicates how ...


Acidity Changes Associated With The Keeping Quality Of Apples Under Various Storage Conditions, H. H. Plagge, Fisk Gerhardt 2017 Iowa State College

Acidity Changes Associated With The Keeping Quality Of Apples Under Various Storage Conditions, H. H. Plagge, Fisk Gerhardt

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

This investigation reports a study of. certain acidity changes occuring in Grimes and Jonathan under various storage conditions. Measurements were made of the total titratable acid, the H-ion concentration and, in some instances, the specific gravity of the juice.

Altho total acidity values declined rapidly in the Grimes variety during two weeks of delay at the orchard, its H-ion concentration remained quite uniform. Prolonging the delayed storage period to three weeks, however, resulted in a rather abrupt lowering of the active acidity of the fruit in cold storage. The appearance of soggy breakdown in the stored fruit occurred almost coincidently ...


Apple Breeding: A Study Of Jonathan Crosses, H. L. Lantz 2017 Iowa State College

Apple Breeding: A Study Of Jonathan Crosses, H. L. Lantz

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

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 ...


Soggy Breakdown Of Apples And Its Control By Storage Temperature, H. H. Plagge, T. J. Maney 2017 Iowa State College

Soggy Breakdown Of Apples And Its Control By Storage Temperature, H. H. Plagge, T. J. Maney

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

1. Soggy breakdown, a non-parasitic disease which develops at low temperatures, is described.

2. Soggy breakdown is distinguished from "internal breakdown" and from "physiological decay "or the breakdown which accompanies senescence. The name "mealy breakdown" is suggested for the latter.

3. Grimes and Wealthy apples have been found to be very susceptible to soggy breakdown, while Jonathan, Arkansas, Willow and Northwestern Greening appear immune to the disease.

4. The initial appearance of soggy breakdown on Grimes in cold storage occurred during the early part of December.

5. Differences of 2° or 4° F. in cold storage temperatures markedly affected the ...


Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, Loren M. Luther 2017 University of Arkansas

Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, Loren M. Luther

Horticulture Undergraduate Honors Theses

In 2013, Castro et al., produced the first linkage map for primocane-fruiting blackberries using the cross ‘Prime-Jim®’ x ‘Arapaho.’ This mapping population has been maintained since the original experiment with the hopes of conducting future studies. Further research was determined to be needed on the population to better characterize additional phenotypic traits, and since nine years had passed since the seedlings were established, there was a need to assess the continued genetic purity of the population using molecular methods. Phenotypic data was collected to analyze the variation of the population including soluble solids content, titratable acidity, average weight, shape, and ...


Germination And Storage Of Apple Seeds, A. L. Bakke, H. W. Richey, Kenneth Reeves 2017 Iowa State College

Germination And Storage Of Apple Seeds, A. L. Bakke, H. W. Richey, Kenneth Reeves

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Apple seeds will not germinate immediately after the fruit has become mature enough for picking. It is necessary for the seed to pass thru a stage of after-ripening.

The freshly extracted apple seed contains about 85 percent moisture. At room temperature approximately one-half of the moisture is lost during the first five days.

Soaking the seed prior to planting does not increase germination.

Ninety-one percent of apple seeds prevented from drying out when they were extracted from the fruit germinated. The best temperature for storage was found to be a temperature between 10 and 30 C. Seeds which had air ...


Certain Physical And Chemical Changes Of Grimes Apples During Ripening And Storage Pr, H. H. Plagge, T. J. Maney, Fisk Gerhardt 2017 Iowa State College

Certain Physical And Chemical Changes Of Grimes Apples During Ripening And Storage Pr, H. H. Plagge, T. J. Maney, Fisk Gerhardt

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

These studies of changes in Grimes Apples, incident to ripening and storage, include rate of softening, increase in size, color changes of fruit and seeds, other common tests used by the growr to determine time of picking, and chemical analyses of changes within the apple.


A Study Of The Control Of Crown Gall On Apple Grafts In The Nursery, I. E. Melhus, T. J. Maney 2017 Iowa State College

A Study Of The Control Of Crown Gall On Apple Grafts In The Nursery, I. E. Melhus, T. J. Maney

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Altho crown gall is one of the most serious diseases of apple trees in the nursery, effective control measures for root-grafted stock have not yet been found. This is doubtless due to previous lack of definite knowledge of the causal agent. Now, due to the excellent work of Erwin F. Smith and C. D. Townsend, Bacteriurn turnefaciens, Sm. and Tw., has been shown to cause this disease. Later, Smith, Brown and Townsend contributed many other important facts pertaining to the pathogenicity and biology of the organism. As a result of these studies, experiments on control measures have been made possible ...


Precision Drought Stress In Orchards: Rootstock Evaluation, Trunk Hydration And Canopy Temperature, Lance V. Scott 2017 Utah State University

Precision Drought Stress In Orchards: Rootstock Evaluation, Trunk Hydration And Canopy Temperature, Lance V. Scott

All Graduate Theses and Dissertations

In many areas, over half of all diverted water is used for irrigation. Tree fruit crops use a lot of water, but water productivity can be increased using properly-timed precision water stress. In addition to water conservation, increases in water productivity arise from better fruit quality, increased storage life and reductions in pruning and maintenance. One major hurdle to applying precision water stress in orchards is the lack of a reliable, automated method of determining tree water status. However, the influence of physiological characteristics such as rootstock vigor on water productivity are also important. Selecting the most appropriate rootstocks and ...


The Effect Of Crown Gall Upon A Young Apple Orchard, Laurenz Greene, I. E. Melhus 2017 Iowa State College

The Effect Of Crown Gall Upon A Young Apple Orchard, Laurenz Greene, I. E. Melhus

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

This bulletin contains a record of progress in a study of the effect of crown gall upon an apple orchard from the time it is set out until it becomes of bearing age. The relative influence of various types of galls upon the annual growth of the trees has been considered and some data have been gathered on the amount and position of the galls in relation to the growth and percentage of stand in the orchard. Also, the susceptibility of certain kinds of apple trees to crown gall after they have been planted in the orchard, and the persistence ...


Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr. 2017 Iowa State College

Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr.

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The breeding of hardy apples is naturally such a long time proposition that it would be a distinct advantage if by microscopic examination of the wood, by mechanical tests, or by other observations the hardiness of a tree could be determined while it was still in the nursery, The following is a summary of the facts brought out in the investigation of "Hardiness in the Apple as Correlated with Structure and Composition. "

1. The cutting, compression and penetration tests seemed to indicate some correlation between hardiness and hardness, but exceptions were found.

2, Twigs from northern sections, except the forms ...


Thornless Blackberry Cultivars Grown With A Rotatable Cross-Arm Trellis System, Gail Nonnecke, Sharon Tusiime, Leah Riesselman Worth, Bernie Havlovic 2017 Iowa State University

Thornless Blackberry Cultivars Grown With A Rotatable Cross-Arm Trellis System, Gail Nonnecke, Sharon Tusiime, Leah Riesselman Worth, Bernie Havlovic

Farm Progress Reports

Blackberries (Rubus L.) are a potential berry crop to diversify Iowa’s agricultural enterprises if plant injury caused by low temperatures is avoided. Winter temperatures below -13°F damage current commercial blackberry cultivars. Systems that improve winter survival of less-winter hardy, thornless blackberries have been used in other locations of eastern United States. The systems include using a rotating-arm trellis to lay blackberry canes near the soil surface to overwinter them under a row cover for protection. The rotatable arm trellis growing system also enhances management practices, such as pruning and training, harvesting, pest management, and proper air and sunlight ...


Seventh Year Performance Of Honeycrisp Grafted On Dwarfing Rootstocks Of The Nc-140 Regional Apple Rootstock Trial, Bryn Takle, Diana Cochran, Lynn Schroeder 2017 Iowa State University

Seventh Year Performance Of Honeycrisp Grafted On Dwarfing Rootstocks Of The Nc-140 Regional Apple Rootstock Trial, Bryn Takle, Diana Cochran, Lynn Schroeder

Farm Progress Reports

Dwarfing rootstocks have the potential to increase profitability of tree-fruit growers by providing smaller trees suitable for high density plantings. Although the initial installation cost can be 10 to 30 times greater than lower-density plantings, the long-range returns can far exceed the traditional plantings. However, to be viable as a commercial rootstock, dwarfing rootstocks must be adapted to a range of agro-climatic conditions, moderately disease resistant, high yielding, and produce quality fruit.


Comparing Between-Row Mulchesin Organic Muskmelon And Squash—Year 1, Hayley Nelson, Mark Gleason 2017 Iowa State University

Comparing Between-Row Mulchesin Organic Muskmelon And Squash—Year 1, Hayley Nelson, Mark Gleason

Farm Progress Reports

Organic farmers must plan carefully to manage weeds and soil health. Mulching not only aids weed management, but also can improve soil quality. Organic-matter mulches compete with weeds for sunlight, moisture, nutrients, and growing space. They also improve soil health by reducing soil erosion and increasing soil organic matter. Organic matter contributes greatly to soil structure and microbial activity, both of which are essential to plant health.

The goal of this trial was to compare the effectiveness of two mulch treatments to suppress weeds, improve soil organic matter, and increase yields of organic muskmelon and acorn squash.


Cluster Removal On La Crescent And Leaf Removal On Marquette Grapevines, Kenneth McCabe, Diana Cochran, Gail Nonnecke 2017 Iowa State University

Cluster Removal On La Crescent And Leaf Removal On Marquette Grapevines, Kenneth Mccabe, Diana Cochran, Gail Nonnecke

Farm Progress Reports

As part of the Northern Grapes Project, research has evaluated various cultural practices to aid in understanding the performance of cold-hardy grape vines (Vitis vinefera-based hybrids) in cold climates. This multi-state research project has led to increased production of cold-hardy grapevines and consumer acceptance. Some cultural practices often utilized in viticulture throughout various parts of the world could potentially be implemented to increase performance and quality of grapes produced in the Midwest. Two of these cultural practices include leaf removal or canopy thinning, as well as fruit thinning or cluster removal. Both practices are typically aimed at improving fruit quality ...


Evaluation Of Peach And Nectarine Production In High Tunnel And Field Plots, Bryn Takle, Diana Cochran, Kenny McCabe 2017 Iowa State University

Evaluation Of Peach And Nectarine Production In High Tunnel And Field Plots, Bryn Takle, Diana Cochran, Kenny Mccabe

Farm Progress Reports

Peaches and nectarines are not common in Iowa’s commercial fruit production. Although the trees can survive -25°F when fully dormant, fruit buds are damaged at temperatures around 28°F, which often occur in Iowa due to spring frost events. The goal of this project is to test the economic viability of utilizing high tunnels to extend the season and enable these fruits to be grown reliably and successfully in Iowa.


Digital Commons powered by bepress