ISHS


Acta
Horticulturae
Home


Login
Logout
Status


Help

ISHS Home

ISHS Contact

Consultation
statistics
index


Search
 
ISHS Acta Horticulturae 984: VII International Symposium on Mineral Nutrition of Fruit Crops

COMPARISON BETWEEN SPEEDFOLTM B SP AND BORAX IN SATISFYING THE BORON REQUIREMENT OF OIL PALM

Authors:   S.A. Oosthuyse, H.T. Holwerda, B. Desmet
Keywords:   Elaeis guineensis Jacq., mineral nutrition, micronutrient, boron
DOI:   10.17660/ActaHortic.2013.984.39
Abstract:
Two experiments, one carried out by the Makin Group, and the other by the P.T.J.A. Wattie, Indonesia, were conducted to determine whether reduced rates of Speedfol B were as effective as conventional rates of Borax in affecting leaf B concentration of oil palm (Elaeis guineensis Jacq.) In both experiments, leaf samples were taken 2, 6, 10, or 12 weeks after B application to assess if differences in rate of effect would occur. In the experiment carried out by the Makin Group, where five-year-old palms were used, 100 g of Borax applied per palm was compared with 88 or 53 g of Speedfol B applied per palm. Fifty-three grams per palm of Speedfol B was applied in both dry powder form, and in suspension with 10 L water around the main stem. The B concentration in leaves from trees receiving dry Speedfol B applied at 88 g or 53 g per palm did not differ from those of trees receiving 100 g Borax per palm. In contrast, leaves from the trees receiving the low rate of Speedfol B suspended in water had lower B concentrations than those from trees receiving the higher rate of B as Borax. Leaf B concentration bore no apparent relation to the time delay in taking leaf samples after application. In the experiment carried out by P.T.J.A. Wattie, where three-year-old palms growing in peat-soil were used, 50 g of dry Borax, or 40 or 30 g of dry Speedfol B was applied per palm. Thirty grams of Speedfol B per palm also were applied in 5 L of water around the main stem. The B concentrations in leaves from trees receiving 40 or 30 g of dry Speedfol B or 30 g of wet Speedfol B were not different from those of trees receiving 50 g of Borax. Leaf B concentration bore a quadratic relation with the time delay in taking leaf samples after B application. In both experiments, a difference relating to B product or rate or method of application in relation to leaf sampling date was not apparent.

Download Adobe Acrobat Reader (free software to read PDF files)

984_38     984     984_40

URL www.actahort.org      Hosted by KU Leuven      © ISHS