Frequency and Intensity of Root Colonization by Ericoid Mycorrhizal Fungi in Nursery Production of Blueberry Plants

Wagner, Adam; Winiarski, Paul

doi:10.1300/j301v04n04_10

Cited by 13 publications

(14 citation statements)

References 32 publications

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“…A 5-g (fresh wt.) subsample of roots was washed from the pots, cleared and stained following procedures outlined in Scagel et al (2005a), and stored in lactoglycerin solution for later determination of EMF colonization. The remaining roots in the pots were washed, dried, and weighed.…”

Section: Methodsmentioning

confidence: 99%

“…Ericoid mycorrhizal fungi (EMF) form symbiotic associations with roots of blueberry plants as well as other ericaceous plants and can increase their uptake of soil nutrients (Read, 1996). The association is common in both wild and cultivated blueberry plants and can occur during nursery production (Scagel et al, 2005a). In nurseries, however, colonization by EMF is often sporadic and can be quite low depending on cultivar and the method of plant production (Scagel et al, 2005a(Scagel et al, , 2005b.…”

mentioning

confidence: 99%

“…The association is common in both wild and cultivated blueberry plants and can occur during nursery production (Scagel et al, 2005a). In nurseries, however, colonization by EMF is often sporadic and can be quite low depending on cultivar and the method of plant production (Scagel et al, 2005a(Scagel et al, , 2005b. Low levels of colonization may be a result of nursery cultural conditions, low availability of EMF propagules, and aspects of plant-fungus compatibility.…”

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confidence: 99%

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Inoculation with Ericoid Mycorrhizal Fungi Alters Fertilizer Use of Highbush Blueberry Cultivars

Scagel¹

2005

HortSci

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Seven highbush blueberry cultivars were inoculated with one of three different isolates of ericoid mycorrhizal fungi (EMF) and grown in pots for 2 years with either inorganic or organic fertilizer. Root colonization of noninoculated plants was low (<15%) regardless of fertilizer source. Root colonization on inoculated plants was 15-30%. Colonization was typically higher when plants were grown with organic fertilizer. Inoculation generally increased plant growth but decreased root:shoot biomass ratios regardless of the type of fertilizer used. Inoculation also increased nutrient uptake and/or nutrient use efficiency in several cultivars, particularly when plants were fertilizer with organic fertilizer. Without inoculum, however, some cultivars fertilized with organic fertilizer had less growth and lower concentrations of N, K, S, and Cu than those fertilized with inorganic fertilizer. Cultivars that were genetically close in ancestry showed a high degree of variability in response to mycorrhizal fungi, while responses to fertilizer type were similar in closely related cultivars. Results suggest that nutrient availability may influence colonization and growth responses to EMF; however aspects of fungus–host specificity and inoculum availability also play a role in EMF colonization of roots in container production.

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Section: Methodsmentioning

confidence: 99%

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Inoculation with Ericoid Mycorrhizal Fungi Alters Fertilizer Use of Highbush Blueberry Cultivars

Scagel¹

2005

HortSci

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“…The other inocula resulted in mycorrhization frequency and intensity rates greater than those found for the azalea inoculum; G. pumila had a colonization frequency of 90.3% and intensity of 44.8%, while V. corymbosum had a frequency of 89.6% and intensity of 40.5%. Scagel et al (2005) reported that the low availability of propagules diminished the colonization potential of ericoid mycorrhizae, and it may be that this was the case for the Azalea sp. propagules.…”

Section: Degree Of Ericoid Mycorrhizal Colonization In Inoculated Culmentioning

confidence: 99%

Colonization of blueberry (Vaccinium corymbosum) plantlets by ericoid mycorrhizae under nursery conditions

et al. 2015

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R. Carrillo, J. Guerrero, M. Rodríguez, and C. Meriño-Gergichevich. 2015. Colonization of blueberry (Vaccinium corymbosum L.) plantlets by ericoid mycorrhizae under nursery conditions. Cien. Inv. Agr. 42(3): 365-374. The ericoid mycorrhiza is a symbiotic interaction that contributes to the improvement of the establishment and production of blueberries (Vaccinium corymbosum L.). The objectives of this paper were to assess the frequency (%) and intensity (%) of the colonization and growth of blueberry plantlets inoculated with ericoid mycorrhizae collected from three different edaphoclimatic conditions in the La Araucanía region of southern Chile under nursery conditions. Plantlets of three blueberry cultivars ("Brigitta", "Duke" and "Legacy") were grown under nursery conditions in sterile peat moss and a vermiculite substrate with fresh ericoid mycorrhizae propagules from Gaultheria pumila (collected in Villarrica National Park), Azalea sp., (from an urban garden in Temuco) or V. corymbosum cv. "Brigitta" (from an organic farm in Temuco). After six months, the development of hyphae characteristic of ericoid micorrhizal fungi was identified in root cells. The frequency and intensity of colonization was greater in the "Duke" cv. given the inoculum derived from V. corymbosum, followed by the "Brigitta" and "Legacy" cultivars treated with inoculum from the G. pumila inoculum. Colonization was lowest in those plants treated with the Azalea sp. inoculum. Contact between the inoculum sources and the fine roots of the micro-propagated blueberry plantlets under nursery conditions for six months was an effective method to promote mycorrhization. However, the development of mycorrhizae did not enhance the growth of the three blueberry cultivars during the evaluation period. The possibility of selecting ericoid inocula from site-specific conditions in southern Chile may eventually be used to support the micro-propagation of blueberry plantlets during acclimation and planting, assuming that mycorrhizal plants will improve conditions for establishment in the field.

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“…The levels, however, vary with plantation age, soil nutrient content and Vaccinium cultivars [17,19,20]. Several authors attempted artificial inoculation of blueberries with selected strains of ericoid mycorrhizal fungi [18,21], but this did not always lead to an increased growth and/or fruit production.…”

Section: Introductionmentioning

confidence: 99%

The effect of NP fertilization on European blueberry (Vaccinium myrtillus L.) development on cultivated land in mid-Norway

Nestby

Krogstad

Joner

et al. 2014

JBR

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Abstract. BACKGROUND:European blueberry (Vaccinium myrtillus L.; EB) is one of the most common shrubs in Nordic forests. It has been exploited through centuries by man and is considered a valuable food. However, it has not been domesticated and all EB fruit is harvested from forest fields. The investigations reported here were undertaken to examine the possibility of EB domestication. OBJECTIVE: With the aid of knowledge achieved through examinations of EB in natural forests and in cultivated fields of lowbush blueberry, the following trials were started to examine if EB could be grown on rich farmland by adaption of fertilization and addition of natural peat as mulch; and by planting EB mats from a forest field and EB seedlings in a strip of top soil (O-layer) from the same field, with the aim to introduce ericoid mycorrhizal (ErM) fungi. METHOD:The experiments were performed as two field trials (A and B) on agricultural land. Trial A was a block design with four replications, examining the effect on plant growth of nine randomly broadcasted fertilization levels combining nitrogen and phosphorus on fresh planted EB seedlings. In addition, two out of four blocks were randomly mulched with natural peat. Trial B was a split-plot design with three blocks. Each block consisted of two large plots and each large plot contained two small plots. Two fertilization levels were randomly broadcasted in large plots, and two plant types [small plug seedlings propagated in sparsely fertilized peat; and mats of (30 × 20) cm 2 from a nearby forest field existing of O-layer and some of the E-layer (wash out soil layer)] were randomly planted in small plots. Seedling plants of trial B (similar plants as in Trial A) were planted in shallow furrows filled with forest soil. Fertilization were N0P0 (control; no fertilizer), and N1P1 (fertilized similar to a medium treatment of trial A). The seedling plants were in a juvenile phase in the year of planting, but the first fruits were observed in the third field year. This indicate that the plants had entered the generative phase. RESULTS: In trial A fertilization increased spatial growth of EB plants and fruit number. However, P alone did not have any significant effect since the level in the soil was high already before establishing the experimental field. Fertilizing with N alone was most effective in terms of spatial growth and fruit number. However, when P fertilizer was applied together with N fertilizer, plant growth and fruit number increased more than when N was applied alone. Fertilization also increased levels of P and S in the soil. Top-dressing had positive effect on growth in the non-fertilized plots. Fertilization of top-dressed plots resulted in poorer plant growth except for N alone and strongest combined fertilization, and there was no clear effect on fruit number. In plots that were not fertilized top-dressing increased total amount of C, N, Ca and Mg. In trial B mycorrhiza was present in all plots and probably influenced the uptake of nutrients by EB. It is of interest...

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Frequency and Intensity of Root Colonization by Ericoid Mycorrhizal Fungi in Nursery Production of Blueberry Plants

Cited by 13 publications

References 32 publications

Inoculation with Ericoid Mycorrhizal Fungi Alters Fertilizer Use of Highbush Blueberry Cultivars

Inoculation with Ericoid Mycorrhizal Fungi Alters Fertilizer Use of Highbush Blueberry Cultivars

Colonization of blueberry (Vaccinium corymbosum) plantlets by ericoid mycorrhizae under nursery conditions

The effect of NP fertilization on European blueberry (Vaccinium myrtillus L.) development on cultivated land in mid-Norway

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