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Articles 31 - 41 of 41
Full-Text Articles in Fruit Science
Relationships Between Blueberry Flower Age, Pollination, And Conidial Infection By Monilinia Vaccinii-Corymbosi, Jeffery S. Lehman, Henry K. Ngugi, Harald Scherm
Relationships Between Blueberry Flower Age, Pollination, And Conidial Infection By Monilinia Vaccinii-Corymbosi, Jeffery S. Lehman, Henry K. Ngugi, Harald Scherm
Biology and Earth Science Faculty Scholarship
Monilinia vaccinii-corymbosi infects open blueberry flowers via the gynoecial pathway, leading to mummification of the developing fruit. To determine the effect of flower age on infection, stigmata were inoculated with conidia of M. vaccinii-corymbosi between 0 and 5 days after anthesis, fungal growth rates through the stylar canal were measured in detached flowers in the laboratory, and fruit disease incidence was determined in plants grown in the greenhouse. Hyphal growth rates were greatest in flowers inoculated on the day of anthesis, declined linearly with increasing flower age at inoculation (r = 0.921; P < 0.0001; n = 12), and were unaffected by the presence or absence of pollen applied at the time of inoculation. In greenhouse-grown plants, the percentage of infected fruit decreased exponentially with increasing flower age at inoculation (R = 0.878; P = 0.0057; n = 10), with disease incidence ranging from 76.4% for flowers inoculated on the day of anthesis to 15.5% for those inoculated 4 days later. Fruit disease incidence in the greenhouse was linearly correlated with hyphal growth rates in detached flowers (r = 0.985; P < 0.0001; n = 9), justifying the use of detached flowers when investigating gynoecial infection by M. vaccinii-corymbosi. In separate experiments, the effects of timing and sequence of pollination and inoculation on hyphal growth rates through the stylar canal and on disease incidence were investigated. Application of pollen to detached flowers 1 or 2 days before inoculation reduced hyphal growth rates by between 14.0 and 42.9% compared with flowers that received pollen and conidia simultaneously. Similarly, reductions in fruit disease incidence by between 9.5 and 18.3% were observed on greenhouse-grown plants for pollination-to-inoculation intervals ranging from 1 to 4 days. These results document that newly opened flowers are most susceptible to infection by M. vaccinii-corymbosi and that fruit disease incidence is reduced if pollination occurs at least 1 day before inoculation. Strategies that lead to early pollination of newly opened flowers may be useful for managing mummy berry disease in the field.
Evaluation Of Chilling Requirements For Six Arkansas Blackberry Cultivars Utilizing Stem Cuttings, Dayanee Yazzetti, John R. Clark
Evaluation Of Chilling Requirements For Six Arkansas Blackberry Cultivars Utilizing Stem Cuttings, Dayanee Yazzetti, John R. Clark
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Woody perennial plants including blackberries (Rubus subgenus Rubus) require certain amounts of chilling or rest hours below 7ºC during the dormant season for successful bud break the following year. Arkansas-developed blackberry cultivars are being grown in various climates worldwide and all cultivars need chilling requirement estimates for accurate recommendations of adaptation. Determining chilling requirement using stem cuttings collected from field-grown plants rather than whole plants is a desirable system. We conducted a study to evaluate both artificial and field chilling of six cultivars. For the artificial-chilling study, 12- node stem cuttings were collected 2 days after the first killing frost. …
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1999, Ron E. Talbert, Lance A. Schmidt, Mike L. Lovelance, Eric F. Scherder
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1999, Ron E. Talbert, Lance A. Schmidt, Mike L. Lovelance, Eric F. Scherder
Arkansas Agricultural Experiment Station Research Series
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Because of the smaller acreage of these crops compared with major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach and other greens, southernpeas, tomatoes, …
Variation And Heritability Of Phenology In The Fungus Monilinia Vaccinii-Corymbosi On Blueberry, Jeffery S. Lehman, Peter V. Oudemans
Variation And Heritability Of Phenology In The Fungus Monilinia Vaccinii-Corymbosi On Blueberry, Jeffery S. Lehman, Peter V. Oudemans
Biology and Earth Science Faculty Scholarship
The germination of field-collected pseudosclerotia and the development of apothecia from eight New Jersey populations of the mummy berry fungus Monilinia vaccinii-corymbosi were evaluated under controlled conditions in the greenhouse. Development data for apothecia were used to describe the timing of apothecium formation and to estimate broad- and narrow-sense heritabilities of fungal phenology. Mean development times for the formation of apothecia ranged from 35.4 to 54.7 days. The mean development times for populations collected from early-season cv. Weymouth ranged from 35.4 to 39.6 days and were significantly shorter than the development times for three of the four populations collected from …
Characteristics Of Some Fruiting Plant Species In Northwest Arkansas, And The Avian Assemblages That Feed On Them, John W. Prather, Kimberly G. Smith, Michael A. Mlodinow, Cecilia M. Riley
Characteristics Of Some Fruiting Plant Species In Northwest Arkansas, And The Avian Assemblages That Feed On Them, John W. Prather, Kimberly G. Smith, Michael A. Mlodinow, Cecilia M. Riley
Journal of the Arkansas Academy of Science
Fruits continue to be recognized as an important food source for birds in temperate areas, particularly during the fall migration period. More than 20 species of plants producing fleshy fruits are found in the Arkansas Ozarks. However, only a few of these appear to be important resources for birds during the fall migration period (August - October). Among those are sassafras (Sassafras albidum), gray-backed grape (Vitis cinerea), black cherry (Prunus serotina), hercules club (Araliaspinosa) and pokeweed (Phytolacca americana). Over the past 4 years, we have documented the physical and nutritional characteristics of those fruits and taken observational data on the …
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1998, Ron E. Talbert, Lance A. Schmidt, Jennifer A. Wells
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1998, Ron E. Talbert, Lance A. Schmidt, Jennifer A. Wells
Arkansas Agricultural Experiment Station Research Series
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southernpeas, watermelon, cantaloupe, summer squash, …
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1997, Ron Talbert, Lance A. Schmidt, Jennifer A. Wells, Jeff S. Rutledge, Dolores A. Parker
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1997, Ron Talbert, Lance A. Schmidt, Jennifer A. Wells, Jeff S. Rutledge, Dolores A. Parker
Arkansas Agricultural Experiment Station Research Series
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southern pea, watermelon, cantaloupe, tomato, …
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1996, Ron Talbert, Lance A. Schmidt, Nilda R. Burgos, Jennifer A. Johnson, Joe K. Curless, Jason K. Norsworthy
Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1996, Ron Talbert, Lance A. Schmidt, Nilda R. Burgos, Jennifer A. Johnson, Joe K. Curless, Jason K. Norsworthy
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Phenology Of Apothecium Production In Populations Of Monilinia Vaccinii-Corymbosi From Early- And Late-Maturing Blueberry Cultivars, Jeffery S. Lehman, Peter V. Oudemans
Phenology Of Apothecium Production In Populations Of Monilinia Vaccinii-Corymbosi From Early- And Late-Maturing Blueberry Cultivars, Jeffery S. Lehman, Peter V. Oudemans
Biology and Earth Science Faculty Scholarship
Pseudosclerotia were evaluated for differences in timing of apothecium development in four controlled experiments conducted over a 2-year period. In a separate experiment, conidia from 10 randomly selected isolates from both of the fungal populations were used to inoculate open flowers. Germination of pseudosclerotia produced from these artificial inoculations also was evaluated. The timing and rate of shoot elongation for cvs. Weymouth and Jersey were assessed in one greenhouse and two field experiments. Average development times for the fungal population from cv. Weymouth were 8 to 15 days earlier or 33 to 42% less than those for the population from …
The 1991 Field Evaluation Of Herbicides On Small Fruit, Vegetables And Ornamental Crops, R. E. Talbert, R. A. Wichert, V. F. Carey Iii, D. H. Johnson, D. F. Ruff, J. A. Kendig
The 1991 Field Evaluation Of Herbicides On Small Fruit, Vegetables And Ornamental Crops, R. E. Talbert, R. A. Wichert, V. F. Carey Iii, D. H. Johnson, D. F. Ruff, J. A. Kendig
Arkansas Agricultural Experiment Station Research Series
The establishment of this field-testing procedure provides the chemical industry, through its partial support, and the Arkansas Experiment Station the opportunity to evaluate herbicide performance on small fruit, vegetable and ornamental crops grown under Arkansas conditions. This report also provides a means for disseminating information to interested people and public-service weed scientists.
A Treatise On The Improved Culture Of The Strawberry, Raspberry, Gooseberry, And Currant : In Which Are Pointed Out The Best Methods Of Obtaining Ample Crops Of These Fruits, To Which Are Prefixed Descriptions Of The Most Esteemed Varieties, Thomas Haynes
Rare Books, Manuscripts,Government Documents, and Atlases
PREFACE
The following instructions for an improved method of cultivating the STRAWBERRY, RASPBERRY, GOOSEBERRY, and CURRANT, are respectfully submitted to those who desire to obtain these fruits of a large size and of an excellent flavour ; and in full confidence that, where a due regard is paid to the directions laid down, the reward will be ample crops of superior fruit. The STRAWBERRY is a native if woods and shady situations, and consequently ought not to be planted indiscriminately in any place. The object in these pages has been to point out and recommend a method by which its …