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- Author or Editor: F. C. Stark x
Tagetes erecta L. cv. Golden Jubilee, Zinnia elegans Jacq. cv. Fire Cracker, and Petunia hybrida Hort. cv. Sugar Plum were grown in various sludge compost-based media based on fraction size. Growth determined by shoot dry weight was greatest in media containing greater portions of small compost particles. No nutrient deficiency symptoms or toxicity symptoms were observed. Shoot weight was increased by addition of a N-P-K fertilizer.