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Andrew G. Ristvey, John D. Lea-Cox and David S. Ross

to have excessive levels of Mn ( Solbraa and Selmer-Olsen, 1981 ). To counteract the effects of Mn accumulation in plant tissues, sodium silicate was added to each fertilizer solution at a 0.05 M concentration. According to Marschner (1995) , silicon

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David R. Rudell, Sara Serra, Nathanael Sullivan, James P. Mattheis and Stefano Musacchi

metabolite extraction and analysis. Frozen peel powder (0.1 g) was weighed into 1.5 mL clear, N 2 ( l ) cooled (≈ −160 °C), screw-top microcentrifuge tubes containing 100 µL of 1.0 mm (diameter) silicon carbide beads (BioSpec Products, Inc., Bartlesville, OK

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David R. Bryla

present. Most clay minerals are aluminosilicates and are divided into groups based on the number of sheets of silicon (Si) and Al atoms in their unit layers. Clays of the 1:1 type such as kaolinite have a greater fixing capacity than the 2:1 type clays

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Jennifer Bonina-Noseworthy, J. Brent Loy, Joanne Curran-Celentano, Rebecca Sideman and Dean A. Kopsell

( Cucurbita moschata Duchesne) HortScience 22 535 539 National Academy of Sciences 2001 Dietary reference intakes for vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. Institute

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sensor, encased in a custom designed sweetpotato-shaped silicon casing, was run over packinglines alongside roots during packing operations (5 times per packingline). Impacts occurring at the transitions between pieces of equipment were characterized by