1000 mg P 2 O 5 kg
−1 . These results indicate that the inoculation of plants with AM fungi can reduce the required
amount of P fertilizer applied to Welsh onion under field
conditions.
The population and P uptake ability of indigenous AM
fungi can affect the growth improvement achieved by introduced AM fungi. AM fungi should be introduced if the
population of indigenous AM fungi is small and/or the
uptake ability of indigenous AM fungi is low. If there is a
population of AM fungi with a high uptake ability, the heavy
application of P fertilizer and fungicide should be avoided in
order to maintain the population of indigenous AM fungi.
(3) Arbuscular mycorrhizal fungi in living mulch
system
Living mulch is a cropping system in which a cover crop is
planted either before or together with the main crop and
maintained as a living ground cover throughout the growing
season. Living mulch prevents soil erosion, increases SOM,
and suppress weeds without the application of chemical
herbicides. If the main crop and cover crop are host plants of
AM fungi, both plants are colonized with AM fungi, and
improved P nutrition can be expected. We used white clover
(Trifolium repens L.) living mulch for the cultivation of
Fig. 6.16 Five-year average of annual changes in the color of middle
leaves on shoots of “Satonishiki” cherry. x: Whole-volume fertilizer
application after harvesting y: Conventional fertilizer application.
Reprinted with permission from Ando and Shiono 2019. The original
publication is available at https://doi.org/10.17660/actahortic.2019.
1235.43
Table 6.7 Number of fruit set
per spur
Treatment
Number of fruit set per (bouquet) spur
2011
2012
2013
2014
2015
Whole-volume
3.1 a*
2.9 a
3.2 a
2.3 a
3.2 a
Control
2.7 a
2.6 a
1.9 b
0.9 b
1.6 b
*Values with a different letter are significantly different (p < 0.05) between treatments
Fig. 6.17 Changes in the “Satonishiki” cherry yield per tree * Values
with a different letter are significantly different (p < 0.10) between
treatments. Reprinted with permission from Ando and Shiono 2019.
The original publication is available at https://doi.org/10.17660/
actahortic.2019.1235.43
208
H. Fujii et al.
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