About Us | Help Videos | Contact Us | Subscriptions

Members of ASA, CSSA, and SSSA: Due to system upgrades, your subscriptions in the digital library will be unavailable from May 15th to May 22nd. We apologize for any inconvenience this may cause, and thank you for your patience. If you have any questions, please call our membership department at 608-273-8080.


Institutional Subscribers: Institutional subscription access will not be interrupted for existing subscribers who have access via IP authentication, though new subscriptions or changes will not be available during the upgrade period. For questions, please email us at: queries@dl.sciencesocieties.org or call Danielle Lynch: 608-268-4976.



This article in SSSAJ

  1. Vol. 32 No. 3, p. 433-437
    Received: Oct 2, 1967
    Accepted: Jan 19, 1968

Request Permissions


Availability of Boron in Various Boronated Fertilizers1

  1. J. J. Mortvedt2



Rates of B dissolution from various boronated fertilizer granules in soil increased with the level of water-soluble B in the fertilizers. Effectiveness of B for alfalfa (Medicago sativa L.) was similar whether partially dehydrated borax (Na2B4O7 · 5H2O) was either mixed alone with the soil or incorporated with various fertilizers and applied to the soil in a greenhouse experiment. Uptake of B increased with rate of applied B, but forage yields were not affected. Plant uptake of B correlated well with a combination of the level of water-soluble B in the fertilizers and the number of granules applied, but not with either parameter alone. This suggests that dissolution of B from boronated fertilizers and distribution in the soil are important for optimum application of B with macronutrient fertilizers.

Forage yields and P uptake by corn (Zea mays L.) and alfalfa were increased with rate of P applied as concentrated superphosphate (CSP) in another greenhouse test. The inclusion of various concentrations of B as borax in CSP granules did not affect yields or P uptake by either crop, indicating that borax can be incorporated into this fertilizer without impairing its effectiveness as a P source.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America