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University of Arizona (1975)

The effects of nitrogen on jojobe, Simmondsia chinensis (Link) Schneider

Meneley, Toni Jean

Titre : The effects of nitrogen on jojobe, Simmondsia chinensis (Link) Schneider

Auteur : Meneley, Toni Jean,

Université de soutenance : University of Arizona

Grade : Master of Science (MS) 1975

Résumé
The growth response of jojoba, Siirnnondsia chinensis, to different nitrogen concentrations in the nutrient feeding solution, was tested. Two experiments were conducted, one in the summer-fall"of 197 4 for 124 days and one in winter-spring, 1975, for 71 days. Plants growing in silica sand were periodically fed six different treatments , ranging from 0 to 400 ppm.ammonium nitrate. Growth response was determined by measuring stem lengths, fresh and dry weights, and per cent nitrogen per gram of dried leaf tissue. Although no significant difference between treatments in height and weight was found, plants that received 100 ppm in the summer-fall experiment were 18.9% greater in height and 4.7% greater in fresh weight than the next best treatment of 50 ppm. A significant difference was found at the „01 confidence level between treatments in the measurement of per cent nitrogen per gram of dried leaf tissue. Based on results and observations recommendations are made on methods of seed germination, water schedule, optimum germination and growth temperatures, and optimum nitrogen levels for growth of seedlings.

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