EFFECTS OF FERTILIZER APPLICATION, PRECEDED BY TERBACIL, ON GROWTH, LEAF NUTRIENT CONCENTRATION, AND YIELD OF THE LOWBUSH BLUEBERRY, Vaccinium angustifolium Ait.

1981 ◽  
Vol 61 (4) ◽  
pp. 961-964 ◽  
Author(s):  
JOHN M. SMAGULA ◽  
AMR A. ISMAIL
Keyword(s):  
Nutrient Concentration ◽  
Fertilizer Application ◽  
Stem Length ◽  
Fertility Rates ◽  
Vaccinium Angustifolium ◽  
Leaf Analysis ◽  
Lowbush Blueberry ◽  
K Concentration ◽  
Fertilizer Rates ◽  
Leaf Nutrient Concentration

Terbacil (3-tert-butyl-5-chloro-6-methyluracil) (2.2 kg/ha) and five fertilizer rates (0, 45, 90, 135 or 180 kg N/ha in a 1:1:1 ratio) were applied pre-emergence to commercial lowbush blueberry fields at five locations. Leaf analysis indicated that N, P, and K concentration increased with increasing fertilizer rates; however, Mg concentrations decreased at rates higher than 45 kg N/ha. Stem length and branching increased linearly with increasing fertility rates. Although fruit bud formation was unaffected, yield was reduced by all fertilizer treatments.

Effects of gypsum on yield and nutrient status of native lowbush blueberry

1996 ◽  
Vol 76 (2) ◽  
pp. 361-366 ◽  
Author(s):  
K. R. Sanderson ◽  
M. R. Carter ◽  
J. A. Ivany
Keyword(s):  
Prince Edward Island ◽  
Field Experiments ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Marketable Yield ◽  
Vaccinium Angustifolium ◽  
Yield Increase ◽  
Lowbush Blueberry ◽  
Leaf Nutrient Concentration ◽  
Gypsum Application

Information is required on the response of native lowbush blueberry (Vaccinium angustifolium Ait.) to soil-applied calcium amendments. Field experiments were carried out in Prince Edward Island to determine the effects of applied gypsum, as a Ca source, on yield and leaf nutrient content of native lowbush blueberry at six sites, two locations per year. Sites were studied over several cropping cycles. Gypsum applied at 2, 4, 6, and 8 t ha−1 in the spring of the sprout year increased marketable yield (from 3.2 to 4.7 t ha−1) at three of six sites in the first crop year following application of gypsum. Averaged over these three sites, marketable yield was increased 47% by the application of gypsum at 4.0 t ha−1. Yield was not affected in the second and third cropping cycles. Mean berry weight and plant growth were not affected by gypsum application. Concentration of leaf Ca was increased but not consistently significant, while leaf S was significantly increased at all sites in the first cropping cycle. Soil pH was significantly reduced by gypsum in the first cropping cycle. A yield increase of 225 kg ha−1 would be sufficient to recover the costs of the applied gypsum. Key words: Gypsum, leaf nutrient concentration, lowbush blueberry, Vaccinium angustifolium Ait., yield

scholarly journals LOWBUSH BLUEBERRY PRODUCTION IN THE NINETIES

HortScience ◽  
1992 ◽  
Vol 27 (12) ◽  
pp. 1263e-1263
Author(s):  
Tom DeGomez
Keyword(s):  
Native Americans ◽  
Weed Control ◽  
Maritime Provinces ◽  
Vaccinium Angustifolium ◽  
Nutrient Analysis ◽  
Leaf Analysis ◽  
Lowbush Blueberry ◽  
Leaf Sampling ◽  
Early Production ◽  
Production Practices

The wild lowbush blueberry (Vaccinium angustifolium) in Maine and the Maritime Provinces of Canada has been managed for hundreds of years, first by native Americans and more recently by European settlers. Early production practices consisted of periodic free burns over large tracts of land for pruning and weed control. New practices have centered on intensifying production and include flail mow pruning, mechanical harvesting, herbicides for weed control, and monitoring pest populations. Most recently, land smoothing for improved mechanization and leaf sampling for nutrient analysis have been adopted. Land smoothing allows producers with rough land to use labor-saving equipment and apply pesticides more precisely. Leaf analysis predicts nutrient availability much more accurately than soil testing.

scholarly journals COMPARISON OF FISH HYDROLYSATE AND INORGANIC FERTILIZERS FOR LOWBUSH BLUEBERRY

HortScience ◽  
1995 ◽  
Vol 30 (2) ◽  
pp. 187d-187
Author(s):  
John M. Smagula ◽  
Scott Dunham
Keyword(s):  
Phosphoric Acid ◽  
Stem Length ◽  
Flower Bud ◽  
Vaccinium Angustifolium ◽  
Inorganic Fertilizers ◽  
Lowbush Blueberry ◽  
Leaf P ◽  
Organic And Inorganic Fertilizers ◽  
Experimental Plots ◽  
Leaf N

A commercial lowbush blueberry (Vaccinium angustifolium Ait.) field deficient in leaf N and P was used to compare organic and inorganic fertilizers. In a RCB design with eight replications of 12 treatments, experimental plots received 33.6 or 67.2 kg·ha-1 rates of N (urea), P (23% phosphoric acid), N + P (DAP), N + P + K (5-10-5), or N + P + K (fish hydrolysate, 242). Fertilizer containing N alone was as effective in raising N leaf concentrations as those containing N and P. However, leaf P concentrations were raised more by fertilizer providing N and P than only P. Fish hydrolysate fertilizer was as effective as 5-10-5 in raising leaf N, P, and K concentrations in prune and crop year leaf samples. At the 67.2 kg·ha-1 rate, fish hydrolysate, N, NP and NPK increased stem length, N and NP increased flower bud density and fish hydrolysate, N and NPK increased yield compared to the control.

EFFECT OF SOIL MOISTURE AND FERTILIZER ON THE POTENTIAL AND ACTUAL YIELD OF LOWBUSH BLUEBERRIES

1984 ◽  
Vol 64 (3) ◽  
pp. 683-689 ◽  
Author(s):  
GEORGE R. BENOIT ◽  
WALTER J. GRANT ◽  
AMR A. ISMAIL ◽  
DAVID E. YARBOROUGH
Keyword(s):  
Soil Moisture ◽  
Field Capacity ◽  
Moisture Stress ◽  
Fertilizer Application ◽  
Flower Buds ◽  
Vaccinium Angustifolium ◽  
Bud Formation ◽  
Lowbush Blueberry ◽  
Berry Size ◽  
Significant Difference

Lowbush blueberry (Vaccinium angustifolium Ait.) plants were evaluated under greenhouse and field conditions to determine the effect of soil moisture stress and fertilizer applied during the year of bud formation on plant growth and development. Greenhouse plants grown under water treatments of 0.2 (about field capacity), 0.6, 1.0 and 5.0 bars did not differ significantly in number of stems per plant or flower buds per stem. A significant increase in the number of flowers per stem was detected for the 0.2- and 0.6-bar treatments over the 1.0- and 5.0-bar treatments. A highly significant trend was an increase in flowers per plant related to an increase in water application. Established field plants had no significant difference in the number of flowers between the unirrigated control and the 0.6- or 0.2-bar treatments. The number and total weight of berries increased significantly with increased water availability during the vegetative growth year but individual berry size remained the same. Irrigation during the year of bud formation may result in increased yield during the crop year. No significant fertilizer application effect was detected on the parameters evaluated.Key words: Vaccinium angustifolium, flower buds

scholarly journals 320 Does Water Availability Influence Photosynthesis and Yield Components of the Lowbush Blueberry (Vaccinium angustifolium Ait.)?

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 498A-498
Author(s):  
V.M. Glass ◽  
D.C. Percival ◽  
J.T.A. Proctor
Keyword(s):  
Nova Scotia ◽  
Drought Stress ◽  
Water Availability ◽  
Growth And Yield ◽  
Stem Length ◽  
Vaccinium Angustifolium ◽  
Supplemental Irrigation ◽  
Node Number ◽  
Zone Length ◽  
Lowbush Blueberry

Drought is the most limiting factor of crops worldwide. Sound management of any crop is based on a knowledge of its physiology as well as response to drought. Therefore, water use management has become an agricultural priority, with increased research focusing on plant growth and yield under limited water conditions. The lowbush blueberry (Vaccinium angustifolium Ait.) is the most important horticultural crop in Nova Scotia in acreage, export sales, and value to the economy. A study initiated at the Nova Scotia Wild Blueberry Inst., Debert (45°26′N, 63°27′W), N.S., during the 1998 growing season investigated the effects of water availability on the growth and development of the lowbush blueberry. Treatments consisting of supplemental irrigation (i), drought stress (d), and a control (c) were applied to plants in their cropping phase of production. Net photosynthetic rates (Pn) were highest during bloom (i: 11.9, d: 9.7, c: 9.8 μmol·m-2·s-1) and then declined throughout the season. No significant (P = 0.05) treatment effect on Pn was observed. Stem sample analysis before harvest showed no significant differences (P = 0.05) between stem length, node number, flowering node number, flowering zone length, or number of fruit per stem. Samples from 1-m2 quadrats indicated the drought-stressed plots produced the lowest yield (378 g·m-2) compared with the supplemental irrigation (449 g·m-2) or control (512 g·m-2) plots. Results from this study suggest drought stress on the lowbush blueberry does not produce significant differences in the number of fruit set; it does result in smaller fruit.

scholarly journals LEVANTAMENTO NUTRICIONAL DE BANANAIS DO VALE DO RIBEIRA-SP PELA ANÁLISE FOLIAR

2011 ◽  
Vol 12 (3) ◽  
Author(s):  
Leandro José Grava de GODOY ◽  
Juliana Macedo GOMES ◽  
José Carlos de MENDONÇA
Keyword(s):  
Nutritional Status ◽  
Nutrient Concentration ◽  
Sao Paulo ◽  
São Paulo ◽  
Banana Production ◽  
Leaf Analysis ◽  
Leaf Nutrient Concentration ◽  
Banana Crops ◽  
Cu And Zn ◽  
Banana Crop

A região do Vale do Ribeira é responsável por 70 % da produção de banana do Estado de São Paulo. O cultivo da bananeira requer grandes quantidades balanceadas de nutrientes para um desenvolvimento adequado. O levantamento dos teores foliares de nutrientes das culturas tem a finalidade de identificar a existência de deficiências e excessos de nutrientes, e direcionar as pesquisas regionais de adubação a serem planejadas. Objetivou-se com o trabalho realizar o levantamento do estado nutricional de bananais do Vale do Ribeira, SP, a partir da análise química foliar dos subgrupos Cavendish e Prata. As amostras foram coletadas em talhões representativos, no período de 1998 a 2005, nos municípios de Cajati, Eldorado, Jacupiranga, Pariquera-Açu, Registro e Sete Barras. Determinou-se os teores de N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn. A maioria dos bananais amostrados apresentou deficiência de N e S. A deficiência de K observada em alguns bananais deve ser devido ao desequilíbrio catiônico (K:Mg:Ca). O B foi o nutriente encontrado em excesso com maior freqüência. A média do teor foliar de K, Ca, S, Cu e Zn foi maior no subgrupo Cavendish. ABSTRACT The region of the “Vale do Ribeira, SP” is responsible for 70% of banana production in the state of São Paulo. The cultivation of bananas plants requires large amounts of nutrients for proper development. The survey of the leaf nutrient concentration of crops aims to identify the nutrients deficiencies and excesses, and to direct regional fertilization researches to be planned. The objective of the work was to survey the nutritional status of banana crop in “Vale do Ribeira, SP”. We used results of nutrient leaf analysis of and “Prata” and “Cavendish” subgroups cultivars of samples collected in banana crops representatives in “Vale do Ribeira”, in the period 1998 to 2005. The leaf samples were collected in banana crops of the following counties: Cajati, Eldorado, Jacupiranga, Pariquera-Acu, Registro and Sete Barras. Were determined the leaf concentration of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn. Most banana crops sampled showed deficiency of N and S. The deficiency of K observed in some banana crops must be due to the imbalance cation (K: Mg: Ca). The B was found in the nutrient excess more frequently. The average leaf content of K, Ca, S, Cu and Zn was higher in “Prata” subgroup than in the “Cavendish” subgroup.

scholarly journals Corn Stover Removal Responses on Soil Test P and K Levels in Coastal Plain Ultisols

2021 ◽  
Vol 13 (8) ◽  
pp. 4401
Author(s):  
Jeffrey M. Novak ◽  
James R. Frederick ◽  
Don W. Watts ◽  
Thomas F. Ducey ◽  
Douglas L. Karlen
Keyword(s):  
Coastal Plain ◽  
Nutrient Removal ◽  
Fertilizer Application ◽  
First Year ◽  
Soil Test ◽  
Concentration Data ◽  
Extractable P ◽  
K Fertilizer ◽  
Soil Test P ◽  
K Concentration

Corn (Zea mays L.) stover is used as a biofuel feedstock in the U.S. Selection of stover harvest rates for soils is problematic, however, because excessive stover removal may have consequences on plant available P and K concentrations. Our objective was to quantify stover harvest impacts on topsoil P and K contents in the southeastern U.S. Coastal Plain Ultisols. Five stover harvest rates (0, 25, 50, 75 and 100% by wt) were removed for five years from replicated plots. Grain and stover mass with P and K concentration data were used to calculate nutrient removal. Mehlich 1 (M1)-extractable P and K concentrations were used to monitor changes within the soils. Grain alone removed 13–15 kg ha−1 P and 15–18 kg ha−1 K each year, resulting in a cumulative removal of 70 and 85 kg ha−1 or 77 and 37% of the P and K fertilizer application, respectively. Harvesting stover increased nutrient removal such that when combined with grain removed, a cumulative total of 95% of the applied P and 126% of fertilizer K were taken away. This caused M1 P and K levels to decline significantly in the first year and even with annual fertilization to remain relatively static thereafter. For these Ultisols, we conclude that P and K fertilizer recommendations should be fine-tuned for P and K removed with grain and stover harvesting and that stover harvest of >50% by weight will significantly decrease soil test M1 P and K contents.

Inhibition of Tulane Virus replication via exposure to lowbush blueberry (Vaccinium angustifolium) fractional components

2017 ◽  
Vol 7 (4) ◽  
pp. 281-289 ◽  
Author(s):  
David F. Bridges ◽  
Anna Breard ◽  
Alison Lacombe ◽  
Don C. Valentine ◽  
Shravani Tadepalli ◽  
...  
Keyword(s):  
Virus Replication ◽  
Vaccinium Angustifolium ◽  
Lowbush Blueberry ◽  
Tulane Virus
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