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The effect of pretransplant inoculation with VA mycorrhizal fungi on the subsequent growth of leeks in the field

M. SASA, G. ZAHKA and I. JAKOBSEN
Plant and Soil
Vol. 97, No. 2 (1987), pp. 279-283
Published by: Springer
Stable URL: http://www.jstor.org/stable/42936131
Page Count: 5
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The effect of pretransplant inoculation with VA mycorrhizal fungi on the subsequent growth of leeks in the field
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Abstract

Leek plants were preinoculated with a mixed inoculum of Glomus caledonium, Glomus fasciculatum and Glomus sp., and transplanted to Dazomet disinfected and untreated field plots of moderate P deficiency. Successive harvests were made until 99 days after transplanting. Preinoculated leeks attained marketable weights 25 days earlier than uninoculated leeks from untreated soil and their final dry matter yields were 5.7 and 1.5 times as high as those of uninoculated leeks from disinfected and untreated soil, respectively. Phosphorus concentrations in preinoculated leeks remained highest for at least 22 and 75 days after transplanting in untreated and disinfected soil, respectively. Preinoculation had a similar, although smaller, influence on Cu and Zn concentrations. Infection levels produced by introduced and indigenous VA endophytes in leeks reached plateaus of 90% and 40%, respectively, 47 days after transplanting. It is concluded that VAM is essential to leeks grown in moderately P deficient soils, and the potential for inoculating seedlings in commercial leek production is discussed.

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