Effect of sawdust mulch on yields of select clones of lowbush blueberry

1991 ◽  
Vol 71 (4) ◽  
pp. 1263-1266 ◽  
Author(s):  
K. R. Sanderson ◽  
J. A. Cutcliffe
Keyword(s):  
Key Words ◽  
Prince Edward Island ◽  
Total Yield ◽  
Vaccinium Angustifolium ◽  
Plant Survival ◽  
Berry Weight ◽  
Lowbush Blueberry ◽  
Significant Difference

The effect of sawdust mulch applied at 0-, 5- and 10-cm depths on yield of select clones of lowbush blueberry (Vaccinium angustifolium Ait.) was studied in Prince Edward Island for three consecutive cropping cycles from 1985 to 1989. Sawdust applied post-plant, as a mulch, at a depth of 5 cm increased the total yield of the first three harvests by approximately 30% compared to the 0-cm mulch. Mean berry weight was also increased where sawdust was applied. There was not significant difference in yield between the 0- and 10-cm sawdust application treatments. The 10-cm sawdust mulch reduced plant survival by 23% compared with the check. Key words: Lowbush blueberry, Vaccinium angustifolium Ait., select clone, sawdust mulch, yield

Response of lowbush blueberry (Vaccinium angustifolium) to hexazinone applied early in the fruiting year

2002 ◽  
Vol 82 (4) ◽  
pp. 781-783 ◽  
Author(s):  
K. I. N. Jensen ◽  
E. G. Specht
Keyword(s):  
Key Words ◽  
Weed Control ◽  
Corolla Tube ◽  
Growth Stages ◽  
Vaccinium Angustifolium ◽  
Floral Buds ◽  
Perennial Weeds ◽  
Lowbush Blueberry ◽  
Herbaceous Perennial

Spring application of 1.0 kg ha-1 hexazinone to fruiting-year lowbush blueberry no later than the F3 floral stage, when floral buds separate, but before the corolla tube shows white, controlled some common herbaceous perennial weeds without injury to the crop. Key words: Herbicide injury, growth stages, weed control, hexazinone, Vaccinium angustifolium

Spring frost damage to placental tissues in lowbush blueberry flower buds

2001 ◽  
Vol 81 (4) ◽  
pp. 779-781 ◽  
Author(s):  
A. Randall ◽  
Olson and Leonard J. Eaton
Keyword(s):  
Key Words ◽  
Fruit Set ◽  
Frost Damage ◽  
Full Bloom ◽  
Flower Buds ◽  
Vaccinium Angustifolium ◽  
Spring Frost ◽  
Lowbush Blueberry ◽  
Commercial Yield ◽  
Spring Frosts

Closed flower buds and flowers at full bloom of Vaccinium angustifolium Ait. were collected from the field and histologically examined after severe spring frosts. Prior to anthesis, blackened ovarian placentae in closed buds were the only damaged tissues evident; placental damage may interfere with both seed and fruit set. Undetected frost damaged placentae may contribute to losses in commercial yield. Key words: Vaccinium, frost damage, placenta

LOWBUSH BLUEBERRY GROWTH FOLLOWING PRUNING BY A CONVENTIONAL AND MODIFIED BURNER

1986 ◽  
Vol 66 (4) ◽  
pp. 1033-1035
Author(s):  
I. V. HALL ◽  
J. M. BURROWS ◽  
P. D. HILDEBRAND
Keyword(s):  
Flower Buds ◽  
Vaccinium Angustifolium ◽  
Lowbush Blueberry ◽  
Significant Difference

Burn pruning with a conventional and modified oil burner was compared in a lowbush blueberry (Vaccinium angustifolium Ait.) field. No significant difference in length of stems, number of flower buds per stem or number of branched stems was found, but intensity of branching on stems increased following pruning with the modified burner. The modified burner required 30–50% less oil than the conventional burner.Key words: Lowbush blueberry, pruning, modified burner

The gynoecial infection pathway of Monilinia vaccinii-corymbosi in lowbush blueberry (Vaccinium angustifolium)

1996 ◽  
Vol 76 (3) ◽  
pp. 493-497 ◽  
Author(s):  
T. C. Shinners ◽  
A. R. Olson
Keyword(s):  
Key Words ◽  
Pollen Tubes ◽  
Fungal Colonization ◽  
Vaccinium Angustifolium ◽  
Stigmatic Surface ◽  
Lowbush Blueberry ◽  
Fruit Wall ◽  
Brightfield Microscopy ◽  
Infection Pathway

Monilinia vaccinii-corymbosi (Reade) Honey is an economically important pathogen of lowbush blueberry (Vaccinium angustifolium Aiton) which causes blighting of leaves and flowers and mummification of fruits. This study was conducted to determine if infection of lowbush blueberry gynoecia occurs through colonization of the stigma. Sections of gynoecia inoculated with conidia were examined by brightfield microscopy. Conidia germinated on the stigmatic surface 1–3 d following inoculation to form hyphae winch invaded the stylar canal and other tissue down to the ovules. The infection pathway observed was identical to that of pollen tubes following pollination. After invasion of the ovary fungal colonization continued until the entire fruit wall was colonized with mycelium. Key words: Mummy berry, stigma colonization, pseudosclerotium

Accumulation of copper and nickel in plant tissues and an insect gall of lowbush blueberry, Vaccinium angustifolium, near an ore smelter at Sudbury, Ontario, Canada

1991 ◽  
Vol 69 (7) ◽  
pp. 1483-1490 ◽  
Author(s):  
G. Bagatto ◽  
J. D. Shorthouse
Keyword(s):  
Key Words ◽  
Host Plant ◽  
Leaf Tissue ◽  
Primary Site ◽  
Root Tissue ◽  
Plant Tissues ◽  
Vaccinium Angustifolium ◽  
Copper Nickel ◽  
Lowbush Blueberry ◽  
Insect Gall

The accumulation of copper and nickel in plant tissues and galls of Hemadas nubilipennis on lowbush blueberry near an ore smelter at Sudbury, Ontario, was investigated. Concentrations of these metals in the root, stem, and leaf tissue decline logarithmically with increasing distance from the Sudbury smelter. The pattern of accumulation for copper and nickel in the various tissues was root > stem > leaf > berry; however, metal differences in these tissues were not as great in plants farther from the smelter. The root tissue is the primary site of accumulation of these metals when environmental levels of copper and nickel are high. The highest concentrations of copper and nickel were found in the galls, indicating that gall tissues act as a strong physiological sink for micronutrients and redirect nutrients from the host plant. Key words: Vaccinium angustifolium, copper, nickel, gall, Sudbury.

SELECTION OF AN "OPTIMUM" TIME TO HARVEST LOWBUSH BLUEBERRY FRUIT

1972 ◽  
Vol 52 (5) ◽  
pp. 701-705
Author(s):  
L. E. AALDERS ◽  
R. STARK ◽  
I. V. HALL ◽  
L. P. JACKSON ◽  
B. G. PENNEY ◽  
...  
Keyword(s):  
Total Yield ◽  
Ripe Fruit ◽  
Optimum Time ◽  
Vaccinium Angustifolium ◽  
Cumberland County ◽  
Green Fruit ◽  
Lowbush Blueberry ◽  
Maturity Date ◽  
Processed Products ◽  
Selection Of

A field study at Nappan, Cumberland County, Nova Scotia, was conducted over a 3-year period, 1969–71, to determine the optimum date of harvest for the lowbush blueberry (Vaccinium angustifolium Ait.). For each of the 3 years, from 70 to 80% of the fruits were ripe by August 10 and by August 30 more than 90% were ripe. The data obtained suggest that the total yield by number of ripe fruit would not appreciably be reduced, particularly in years with above-normal heat units, by advancing the season approximately 5 days earlier than has normally been done. Earlier picked fruit has tougher skin that would result in a greater number of whole fruits in processed products. Raking early would increase the percentage of green fruit and therefore increase cleaning costs slightly. Data were also collected during the years 1953–71 at Avondale, Newfoundland. These show a great variation between years in the maturity date of the fruit, but 80% are usually ripe in that province by mid-September.

RESPONSE OF LOWBUSH BLUEBERRY SEEDLINGS TO VARIOUS DATES OF DIGGING FOR STORAGE

1979 ◽  
Vol 59 (1) ◽  
pp. 261-262
Author(s):  
IVAN V. HALL ◽  
LEWIS E. AALDERS
Keyword(s):  
Vaccinium Angustifolium ◽  
Plant Survival ◽  
Lowbush Blueberry ◽  
Survival And Growth

Seedlings of the lowbush blueberry (Vaccinium angustifolium Ait.) grew well after autumn digging, winter storage at − 2 °C, and dormant planting the following spring. Early November was the best digging time, as evidenced by plant survival and growth the following year.

Boron for brown-heart control on two rutabaga cultivars

2002 ◽  
Vol 82 (3) ◽  
pp. 561-565 ◽  
Author(s):  
K. R. Sanderson ◽  
J. B. Sanderson ◽  
U. C. Gupta
Keyword(s):  
Key Words ◽  
Plant Tissue ◽  
Prince Edward Island ◽  
Field Experiments ◽  
Total Yield ◽  
Nutrient Content ◽  
And Storage

Field experiments were carried out in Prince Edward Island to investigate the effect of broadcast and foliar B applications on brown-heart, leaf nutrient content, yield and storage of two rutabaga cultivars (Brassica napabrassica Mill.) at one site in 1994, 1996 and 1997. The two cultivars, York and Thomson Laurentian, were seeded with preplant broadcast B at 0, 2.24, 4.48 and 6.72 kg ha-1. Within each preplant broadcast B treatment, foliar B was applied as Solubor (20.5% B) at 0 and 2.24 kg B ha-1. Foliar B was applied 28 and 42 d after seeding at 1.12 kg B ha-1 at each application. Averaged over these 3 yr, total yield was reduced by broadcast B and foliar B applications. Applications of B increased soil and tissue B levels. Boron was within acceptable levels for plant tissue and soil in all years; however, brown-heart was severe in 1994. On average, the incidence of brown-heart was lower in York than in Thomson Laurentian, and further decreased with increasing rate of B, both broadcast and foliar. Key words: Boron, brown-heart, York, Thomson Laurentian, rutabaga

The common lowbush blueberry, Vaccinium angustifolium Aiton, may be an allopolyploid

1993 ◽  
Vol 73 (3) ◽  
pp. 889-891 ◽  
Author(s):  
K. Hokanson ◽  
J. Hancock
Keyword(s):  
Key Words ◽  
Goodness Of Fit ◽  
Chi Square ◽  
Vaccinium Angustifolium ◽  
Tetrasomic Inheritance ◽  
Lowbush Blueberry ◽  
Disomic Inheritance ◽  
The Common ◽  
Chi Square Tests

Data collected by Hall and Aadlers (1963) on the white-fruited trait were used to determine whether Vaccinium angustifolium is an allopolyploid displaying disomic inheritance or an autopolyploid with tetrasomic inheritance. Chi square tests for goodness-of-fit were non-significant for both models in all crosses, but the probabilities were higher in two of them for tetrasomic inheritance. Key words: Tetrasomic inheritance, disomic inheritance, allopolyploidy

Mineral concentrations within cells of galls induced by Hemadas nubilipennis (Hymenoptera: Pteromalidae) on lowbush blueberry: evidence from cryoanalytical scanning electron microscopy

1994 ◽  
Vol 72 (9) ◽  
pp. 1387-1390 ◽  
Author(s):  
Giuseppe Bagatto ◽  
Joseph D. Shorthouse
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Key Words ◽  
Osmotic Potential ◽  
Larval Feeding ◽  
Vaccinium Angustifolium ◽  
Lowbush Blueberry ◽  
Insect Gall ◽  
Mineral Concentrations ◽  
Scanning Electron

Cryoanalytical scanning electron microscopy was used to examine cellular concentrations of K, P, S, Mg, Ca, Fe, Cu, Ni, and Au in a planed section of an insect gall induced by Hemadas nubilipennis on shoots of lowbush blueberry. Levels of K varied throughout tissues of the gall, with the highest levels within the cytoplasmically dense nutritive cells lining the larval chambers, storage nutritive cells, and peridermal cells. It is postulated that K increases the osmotic potential and size of nutritive cells, thereby facilitating larval feeding. Nutritive cells also contained elevated levels of P and S. Levels of Cu, Ni, Fe, and Au were elevated in epidermal tissues, especially near the stomata. Key words: gall, blueberry, minerals, cryoanalytical SEM, Hemadas nubilipennis, Vaccinium angustifolium.

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