Impact of simulated acid rain on photochemistry, morphology, and yield of the wild blueberry (Vaccinium angustifolium Ait.)

2004 ◽  
Vol 84 (3) ◽  
pp. 877-880 ◽  
Author(s):  
Angela M. Murray ◽  
David C. Percival ◽  
Glenn W. Stratton
Keyword(s):  
Photosystem Ii ◽  
Key Words ◽  
Acid Rain ◽  
Crop Yield ◽  
Net Photosynthesis ◽  
Simulated Acid Rain ◽  
Wax Deposition ◽  
Vaccinium Angustifolium ◽  
Psii Photochemistry ◽  
Wild Blueberry

The effects of simulated acid rain (SAR) on the photochemistry, net photosynthesis (Pn), morphological damage, and crop yield were studied on Vaccinium angustifolium Ait. Although there was an 8% decrease in fluorescence origin with the pH 1.5 SAR treatment when compared to the control, no effects on the quantum efficiency of photosystem II (PSII) photochemistry, Pn, leaf and berry wax deposition were detected. There was no SAR effect on crop yield or the physiological components studied. Key words: Vaccinium angustifolium Ait., acid rain, blueberry

Effects of summer and fall applications of foliar boron on fruit bud winter injury in wild blueberry (Vaccinium angustifolium Ait.)

2007 ◽  
Vol 87 (4) ◽  
pp. 923-925 ◽  
Author(s):  
L. J. Eaton ◽  
H-Y. Ju ◽  
K. R. Sanderson
Keyword(s):  
Key Words ◽  
Boron Concentration ◽  
The Other ◽  
Vaccinium Angustifolium ◽  
Damage Tissue ◽  
Wild Blueberry

The effects of single and multiple applications of foliar B to two commercial wild blueberry sites during 1999 to 2001 were determined. The effects on tissue B concentrations and winter injury to developing fruit buds was evaluated. At one site, applications of foliar B in summer or fall or in both seasons increased tissue B levels in the first crop fruit buds, but the increases were not observed 1 yr later in the second crop fruit buds. At the other site, applications of foliar B in both the summer and fall of two successive cropping cycles reduced winter injury compared with untreated controls, indicating that multiple foliar B applications may be required to reduce winter injury to developing buds of wild blueberry. Key words: Extractable boron, bud damage, tissue boron concentration, Vaccinium angustifolium Ait.

Second-crop N fertilization improves lowbush blueberry (Vaccinium angustifolium Ait.) production

2003 ◽  
Vol 83 (1) ◽  
pp. 149-155 ◽  
Author(s):  
B. G. Penney ◽  
K. B. McRae ◽  
G. A. Bishop
Keyword(s):  
Key Words ◽  
Crop Yield ◽  
Crop Production ◽  
N Fertilization ◽  
Ripe Fruit ◽  
Flower Buds ◽  
Vaccinium Angustifolium ◽  
Potassium Nutrition ◽  
Lowbush Blueberry ◽  
Fruit Abortion

Most commercial blueberry growers follow a 2-yr pruning cycle because second-crop yield in a 3-yr cycle is usually too low for an economical harvest. Research was conducted to determine the extent to which second-crop production could be increased by applying fertilizer in the second-crop year. Treatments, consisting of factorial combinations of N (0, 60 kg ha-1), P (0, 26 kg ha-1), and K (0, 50 kg ha-1), were studied over two 3-yr burn-pruning cycles on a natural lowbush blueberry stand. Treatments were applied prior to, or shortly after, flower buds started to swell in the spring of the second-crop year. Nitrogen increased ripe fruit yield by 65% (3410 vs. 2070 kg ha-1) when compared with plots not previously fertilized with N, and by 43% (3410 vs. 2380 kg ha-1) when compared with plots previously fertilized with N. These results indicate that N might make the second crop economical to harvest. Phosphorus did not significantly affect yield, but K applied in combination with N in the second-crop year negatively affected production and Mg uptake. The increase in yield by N was due to more ripe berries resulting from a higher total (ripe + unripe) number of berries and hastened maturity that increased the percentage of ripe fruit. Reduced fruit abortion is suspected to be the reason for higher berry numbers. In contrast, the negative response to K applications with N was due to reduced total berry numbers. Key words: NK interaction, N × K interaction, potassium, nutrition, fertility, fruit abortion

scholarly journals Analysis of Pollination Services Provided by Wild and Managed Bees (Apoidea) in Wild Blueberry (Vaccinium angustifolium Aiton) Production in Maine, USA, with a Literature Review

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1413
Author(s):  
Sara L. Bushmann ◽  
Francis A. Drummond
Keyword(s):  
Honey Bee ◽  
Crop Yield ◽  
Honey Bees ◽  
Fruit Set ◽  
Bumble Bees ◽  
Wild Bees ◽  
Vaccinium Angustifolium ◽  
Wild Bee ◽  
Bee Communities ◽  
Wild Blueberry

Maine is the largest producer of wild blueberry (Vaccinium angustifolium Aiton) in the United States. Pollination comes from combinations of honey bees (Apis mellifera (L.)), commercial bumble bees (Bombus impatiens Cresson), and wild bees. This study addresses (1) previous research addressing wild-blueberry pollination, (2) effects of wild-bee and honey-bee activity densities on fruit set, yield, and crop value, (3) the economic value of wild-bee communities, and (4) economic consequences of pollinator loss. Bee communities were sampled in 40 fields over three years (2010–2012) and bee activity densities were estimated for bumble bees, honey bees, and other wild bees. These data were applied to an economic model to estimate the value of bee taxa. Bumble bees and honey bees predicted fruit set and reduced its spatial heterogeneity. Other wild bees were not significant predictors of fruit set. Yield was predicted by fruit set and field size, but not pest management tactics. Our analysis showed that disruption in supply of honey bees would result in nearly a 30% decrease in crop yield, buffered in part by wild bees that provide “background” levels of pollination. Honey-bee stocking density and, thus, the activity density of honey bees was greater in larger fields, but not for wild bees. Therefore, a decrease in crop yield would be greater than 30% for large fields due to the proportionally greater investment in honey bees in large fields and a relatively lower contribution by wild bees.

Effect of Simulated Acid Rain on Gas Exchanges of Three Compositae Invasive Plants

2013 ◽  
Vol 48 (2) ◽  
pp. 160-167
Author(s):  
Song Liying ◽  
Ke Zhanhong ◽  
Sun Lanlan ◽  
Peng Changlian
Keyword(s):  
Acid Rain ◽  
Invasive Plants ◽  
Simulated Acid Rain ◽  
Gas Exchanges

Effect of simulated ‘acid rain’ on cation loss from leaves

Nature ◽  
1975 ◽  
Vol 255 (5506) ◽  
pp. 324-325 ◽  
Author(s):  
J. A. W. FAIRFAX ◽  
N. W. LEPP
Keyword(s):  
Acid Rain ◽  
Simulated Acid Rain
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