+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Rate and time of boron application increase almond productivity and tissue boron concentration



Rate and time of boron application increase almond productivity and tissue boron concentration



HortScience: a ication of the American Society for Horticultural Science 34(2): 242-245



Previous studies with tree species have demonstrated that foliar boron (B) promotes flowering, fruit set, and yield. However, for most species the optimum time for foliar B application has not been determined. This investigation was undertaken to study the effects of time and rate of B application on almond [Prunus dulcis (Mill D.A.Webb)] tissue B concentration, fruit set, and yield. Solubor (Na(2)B(8)O(13).4H(2)O), a commercial product containing 20.5% B, was applied with a handgun sprayer either in September (3 weeks postharvest), December (dormancy), or February (budbreak) at rates of 0, 0.8, and 1.7 kg(.)ha)(-1) B to almond cv. Butte at one site (Parlier, Fresno County, Calif.), and of 0, 0.8, 1.25, 1.7, and 2.1 kg(.)ha(-1) B on the same cultivar in August, September, or February at a second site (Orland, Glenn County, Calif.) using Borosol, a polyboronated commercial product containing 10% B. At site 1, September application was more effective in increasing tissue B concentration, fruit set, and yield than were December or February applications. The optimal rate was 0.8 to 1.7 kg(.)ha(-1) B when applied in September. At site 2, application in 1996 and 1997 increased tissue B concentration almost linearly, especially when applied in August and February. Application at the highest rate (2.1 kg(.)ha(-1) B) in September produced the greatest final fruit set and yield in 1996. February applications increased initial fruit set at both sites but were less effective than September applications in increasing yield. Application of B did not affect any yield variable in 1997. These results suggest that B should be applied immediately postharvest (September) for optimal effect on tissue B concentration, fruit set, and yield in almond.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 003250353

Download citation: RISBibTeXText


Related references

Fall foliar-applied boron increases tissue boron concentration and nut set of almond. Journal of the American Society for Horticultural Science 122(3): 405-410, 1997

Effects of methods of boron application on leaf tissue concentration of boron and control of brown-heart in rutabaga. Canadian Journal of Plant Science 58(1): 63-68, 1978

Effect of boron on yield and boron and nitrogen concentration of plant tissue of different varieties of wheat (Triticum aestivum) under boron deficient soil. 2008

Effects of boron and limestone on cereal yields and on boron and nitrogen concentration of plant tissue. Plant and Soil 47(1): 283-288, 1977

Critical boron concentration and calcium - boron balance as related to the boron need of sugarbeet. Acta Agronomica Academiae Scientiarum Hungaricae 23(1/2): 108-113, 1974

Effects of lime and boron on brown-heart, leaf tissue calcium/boron ratios, and boron concentrations of rutabaga. Soil Science Society of America Proceedings 36(6): 936-939, 1972

Studies on boron deficiency and excess in citrus. Part 3. Boron application experiment (2) and interaction between calcium and boron 1958-1962. Bull. hort. Res. Stn, Hiratsuka, 4, 45-66, 1965

Studies on boron deficiency and excess in citrus. Part 3. Boron application experiment (2) and interaction between calcium and boron, 1958-1962.. Bull hort. Res. Stat, Hiratsuka, 4, 45-66. bibl. 18, 1955

Boron deficiency and toxicity symptoms for several crops as related to tissue boron levels Snap beans, radish, tomatoes, corn, timothy, boron, plant analysis. Journal of plant nutrition(5): 387-395, 1983

Boron neutron capture radiation therapy of cerebral gliomas: an analysis of the possible use of boron-loaded tumor-specific antibodies for the selective concentration of boron in gliomas. International Journal of Radiation Oncology Biology Physics 8(8): 1339-1345, 1982

Effects of foliar-applied boron on fruit retention, fruit quality, and tissue boron concentration of pecan. Hortscience 43(3): 696-699, 2007

Effect of rate of boron application at sowing time on cotton plants in a deficient soil. Bragantia 41: 181-191, 1982

Yield and yield attributes of durum wheat genotypes as affected by boron application in boron-deficient calcareous soils: an evaluation of major Turkish genotypes for boron efficiency. Journal of Plant Nutrition 27(6): 1077-1106, 2004

Boron supplying power, boron adsorption capacity and productivity of some acidic soils from the Central Tablelands of New South Wales. Australian Journal of Experimental Agriculture and Animal Husbandry 24(124): 120-125, 1983

Boron nutrition of sesame and B fertilizer application. II. Effects of B application on the growth, development and boron accumulation of the plants of different varieties. Oil Crops of China ( 4): 45-48, 1992