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  • Author or Editor: Megan Hughes x
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Abstract

Mycorrhizal red raspberry (Rubus idaeus L.) plants colonized by Glomus fasciculatus (Thaxter) Gerd. & Trappe had higher concentration of plant P than non-mycorrhizal colonized by Glomus fasciculatus at 0, 22 and 44 ppm soil P levels. Total P uptake was greater in mycorrhizal plants than controls at 22 and 44 ppm added P. The presence of mycorrhizae did not influence N, Mg, B, and Zn concentrations at any soil P level. K concentration in mycorrhizal plants was lower than controls at 22 ppm added P, but total K uptake was the same. Copper concentration was higher in mycorrhizal plants at the highest P level. P additions significantly influenced the total uptake of all elements except Cu and the concentration of all elements except An and Mn.

Open Access

Abstract

Leaves of red raspberry (Rubus idaeus L. cv. Meeker) were sampled every 2 weeks throughout the growing season at 7 different positions on the cane to determine the time and position of minimum leaf nutrient flux. During the last half of August, the 5th to 12th leaves from the terminal 15 cm of the primocane showed the least variation in nutrient concentrations.

Open Access

Abstract

Strawberries (Fragaria × ananassa Duch. cv. Hood) were grown at three levels of soil P and inoculated with either Glomus fasciculatus (Thaxter sensu Gerd.) Gerd. & Trappe or Gigaspora calospora (Nicol. & Gerd.) Gerd. & Trappe mycorrhizal fungus. P and N concentration in the aerial part of inoculated plants were higher than in controls; highest concentrations were found in plants inoculated with Glomus fasciculatus. Inoculation with this fungus also resulted in the greatest length of mycorrhizal roots and the highest percentage of total root length infected.

Open Access