- Manganese, Plants, and Soil
Manganese is critical in photosynthesis; therefore soils deficient in manganese may result in chlorosis of the leaf and more. http://www.manganese.org/mn/plants.php3 (Added: Mon Jan 28 2002)
- Plant Nutrients
The interaction between soil, nutrients, and plants. http://www.ncagr.com/cyber/kidswrld/plant/nutrient.htm (Added: Mon Jan 28 2002)
- Soil pH: What it Means
A description of the effects of variable pH levels on various types of plants. http://www.esf.edu/pubprog/brochure/soilph/soilph.htm (Added: Mon Jan 28 2002)
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