Effects of Method and Level of Nitrogen Fertilizer Application on Soil Ph, Electrical Conductivity, and Availability of Ammonium and Nitrate in Blueberry

Bryla, David R.; Shireman, A. D.; Machado, R. M. A.

doi:10.17660/actahortic.2010.868.8

Cited by 28 publications

(21 citation statements)

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“…Bryla and Machado (2011) found that while fertigation was less efficient than broadcast fertilizer at promoting growth at low N rates, it resulted in more growth when high rates of N were applied. Again, the reason was attributed to an increase in soil EC and subsequent salinity when using a high rate of granular ammonium sulphate, which was not evident when plants were fertigated with liquid urea (Bryla et al 2010).…”

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Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

et al. 2014

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2014. Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry. Can. J. Plant Sci. 94: 1165Á1179. Proper nitrogen (N) fertilizer management of highbush blueberry (Vaccinium corymbosum L.) is of major importance in south-coastal British Columbia, but little information is available. A field study was conducted to examine the effects of N rate and method of application on growth, yield, and fruit quality in highbush blueberry during the first 4 yr after planting in south-coastal BC. Nitrogen was applied at 0Á150% of current production guide rates either with three equal applications of broadcast granular ammonium sulphate each spring or by fertigation through the drip irrigation system with 10 equal applications of liquid ammonium sulphate injected every 2 wk from early spring to late summer each year. Yield increased with increasing N rate during the second and third years of fruit production. The yield response as well as flower number and plant size were greater with fertigation than with broadcast fertilizers. Fruit firmness also increased consistently with increased N rates, while fruit size either increased or decreased, depending on year. There were no effects of N on fruit oxygen radical absorbance capacity (ORAC), titratable acidity, or soluble solids. However, the composition of fruit anthocyanins changed, with concentrations of seven anthocyanins decreasing, and three others increasing, with N rate. In 2 of 3 yr, total anthocyanin concentration was greater in fertigated than in broadcast treatments. Soil ammonium and nitrate concentrations increased with N rate, but only soil nitrate differed between the two application methods. Soil nitrate was higher with fertigation than with granular fertilizers, particularly at the end of the season and when greater rates of N were applied. In summary, fertigation produced more shoot growth and greater yields with less N than broadcast applications of fertilizer. Ehret, D. L., Frey, B., Forge, T., Helmer, T., Bryla, D. R. et Zebarth, B. J. 2014. Effets du taux et de la me´thode d'application des engrais azote´s sur la production haˆtive du bleuet en corymbe et la qualite´de ses fruits. Can. J. Plant Sci. 94:1165Á1179. Une gestion approprie´e des engrais azote´s (N) dans les cultures de bleuet en corymbe (Vaccinium corymbosum L.) reveˆt une importance capitale dans le sud de la re´gion coˆtie`re de la Colombie-Britannique, mais il existe peu de documentation sur le sujet. Les auteurs ont re´alise´une e´tude sur le terrain pour ve´rifier les conse´quences du taux et de la me´thode d'application des engrais N sur la croissance, le rendement et la qualite´des fruits du bleuet en corymbe, les quatre anne´es suivant l'e´tablissement de la culture dans le sud de la re´gion coˆtie`re, en Colombie-Britannique. Les engrais ont e´teá pplique´s a`raison de 0 a`150 % des recommandations actuelles, soit en trois applications e´gales, a`la vole´e, de sulfate d'ammonium granulaire au printemps, soit en dix applications e´gales de s...

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Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

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“…It is well known that blueberries develop well in acidic soils with a pH of 4.5 to 5.5 and with low levels of fertility (Korcak, 1988;Mainland, 2012;Retamales and Hancock, 2012). Some authors recommend nutrient solutions with low electrical conductivity (EC) between 0.45 and 1.5 dS · m -1 (Ameri et al, 2012;Bryla et al, 2010;Ingestad, 1973;Machado et al, 2014). However, the optimal EC of the nutrient solution for the cultivation of blueberries in soilless culture has not yet been determined (Voogt et al, 2014).…”

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Effect of pH and Silicon in the Fertigation Solution on Vegetative Growth of Blueberry Plants in Organic Agriculture

Gallegos-Cedillo¹,

Álvaro²,

Capatos³

et al. 2018

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The effect of pH and silicon (Si) in the nutrient solution on the vegetative development of 2-year-old blueberry plants (Vaccinium corymbosum L. cv. Ventura) was studied. Two independent experiments were performed on coir fiber (CF) and sand as substrates. In experiment 1, Si was applied in the nutrient solution at a dose of 0.0, 0.3, 0.6, and 1.2 mM. In experiment 2, plants were treated with nutrient solution at pH 4.00, 4.75, 5.50, and 6.25, using two sources of acidification: nitric acid and citric acid. The parameters of plant growth, foliar surface, and stem biomass were measured. With the application of 1.2 mM Si to CF, plant height registered a significant increase of 8%, and shoot dry and fresh biomass increased by 21% and 25%, respectively. The results of experiment 1 indicated that the application of Si benefits the vegetative growth of blueberry plants in CF, but no effect was observed in the sand substrate. In the results of experiment 2, the pH level of 6.25 in CF decreased the dry weight of stems and leaves by 21% and 18%, respectively. A significant increase in the pH range of 4.00 to 5.50 was recorded in both the citric acid and nitric acid treatments, but these significant effects were not found in sand. Citric acid presented a similar behavior to nitric acid, which indicates that it can be a good source of acidification in organic and ecologically friendly crops.

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“…, (Hagin and Lowengart, 1996;Li et al, 2003;Hartz et al, 2005). (Finn and Warmund, 1996;Vargas and Bryla, 2015), (Bryla and Machado, 2011), (Glonek and Komosa, 2004), (Ehret et al ., 2014), (Bryla et al ., 2008) .…”

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Effect of Nitrogen Fertigation on The Growth and Nutrition Uptake of ‘Brightwell’ Rabbiteye Blueberry

Kwack¹,

Chae²,

Lee³

et al. 2017

Korean Journal of Environmental Agriculture

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BACKGROUND: Rabbiteye blueberry(Vaccinium asheiReade) has low nutrient uptake efficiency due to its shallow and fibrous root system without root hairs. This study was carried out to establish an efficient nutrient application standard by investigating the effect of nitrogen fertigation on the growth and fruit characteristics of rabbiteye blueberry. METHODS AND RESULTS: 'Brightwell' rabbiteye blueberry was treated with 0, 50, 100 and 200% nitrogen fertigation of recommended fertilizer application (6, 9 and 14 g/bush in the first, second and third years, respectively). The results showed that leaf nitrogen content significantly correlated with the fruit weight and fruit yield. However, canopy area, dry weight, sugar and anthocyanin contents did not correlate significantly with the leaf nitrogen content. The leaf and stem dry weights of 'Brightwell' rabbiteye blueberry during the third year of planting were the highest with 50% nitrogen fertigation (leaf dry weight=723.7 g/bush; stem dry weight=890.7 g/bush). Maximum fruit yield of 'Brightwell' rabbiteye blueberry (12.9 kg/bush) was observed during the third year of planting with 50% nitrogen fertigation and this was about 70% greater than the treatment that received no nitrogen fertigation. The fruit yields of 'Brightwell' rabbiteye blueberry during the third year of planting treated with 100 and 200% nitrogen fertigation were 11.0 and 11.5 kg/bush, and these were 17 and 12% lower than the 50% nitrogen fertigation treatment, respectively. Further, the efficiency of nitrogen utilization was the highest (90%) with 50% nitrogen fertigation and lowest (18%) with 200% nitrogen fertigation. CONCLUSION:The results of this study suggests that fertigation with 50% of the recommended fertilizer could be most effective for enhancing the growth and nitrogen use efficiency of rabbiteye blueberry.

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Effects of Method and Level of Nitrogen Fertilizer Application on Soil Ph, Electrical Conductivity, and Availability of Ammonium and Nitrate in Blueberry

Cited by 28 publications

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Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

Effect of pH and Silicon in the Fertigation Solution on Vegetative Growth of Blueberry Plants in Organic Agriculture

Effect of Nitrogen Fertigation on The Growth and Nutrition Uptake of ‘Brightwell’ Rabbiteye Blueberry

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Effects of Method and Level of Nitrogen Fertilizer Application on Soil Ph, Electrical Conductivity, and Availability of Ammonium and Nitrate in Blueberry

Cited by 28 publications

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Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

Effects of nitrogen rate and application method on early production and fruit quality in highbush blueberry

Effect of pH and Silicon in the Fertigation Solution on Vegetative Growth of Blueberry Plants in Organic Agriculture

Effect of Nitrogen Fertigation on The Growth and Nutrition Uptake of &#8216;Brightwell&#8217; Rabbiteye Blueberry

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Effect of Nitrogen Fertigation on The Growth and Nutrition Uptake of ‘Brightwell’ Rabbiteye Blueberry