Root Damage Affects Nitrogen Uptake and Growth of Young Fuji/M.26 Apple Trees

Nursery Crops
Research was conducted with the intent of evaluating the effect of different levels of root damage at planting on nitrogen uptake and growth of bench-grafted young apple (Malus domestica Borkh 'Fuji'/M.26) nursery trees.

Growth and Nutrient Use of Ericaceous Plants Grown in Media Amended with Sphagnum Moss Peat or Coir Dust

Nursery Crops
The objectives of the USDA-ARS affiliated study were to determine whether growth, nutrient use, and storage components of ericaceous plants differ when grown in media amended with varying proportions of sphagnum peat or coir.

Soil Pasteurization and Inoculation with Glomus intraradices Alters Flower Production and Bulb Composition of Zephyranthes spp.

Bulbs
The objective of this study was the determine whether addition of vesicular-arbuscular mycorrhizal fungi (VAMF) inoculum into the growing medium of different Zephyranthes spp. alters aspect of flower production, bulb production, and bulb quality.

Inoculation with Arbuscular Mycorrhizal Fungi Alters Nutrient Allocation and Flowering of Freesia x hybrida

Geophytes
Study conducted to (1) determine whether addition of AMF inoculum into the growing medium of different Freesia x hybrida cultivars alters flower production, corm production, and corm chemical composition, and (2) to assess whether the other rhizosphere organisms present in the AMF inoculum play a role in plant response to inoculum.

Mycorrhizal Fungi in Rooting Substrate Influences the Quantity and Quality of Roots on Stem Cuttings of Hick’s Yew

Propagation
A report on research conducted to determine 1) whether the addition of vesicular–arbuscular mycorrhizal fungi (VAMF) inoculum into the rooting substrate during cutting propagation increases rooting of hick’s yew and 2) how the quantity of VAMF inoculum influences the rooting of hick’s yew under nursery production conditions.

Cultivar Specific Effects of Mycorrhizal Fungi on the Rooting of Miniature Rose Cuttings

Propagation
The objective of the study was to determine whether addition of vesticular-arbuscular mycorrhizal fungi (VAMF) inoculum into the rooting medium during cutting propagation would increase the quantity of rooting and the quality of rooted cuttings for different cultivars of miniature roses.

Regulation Root Growth in Ericaceous Plant Propagation

Nursery Crops
USDA-ARS affiliated author discusses the relationship between rooting and tissue nitrogen and protein content of ericaceous plants. The information presented is based on investigations into hormonal and nutritional regulation of root growth during propagation of common ericaceous plants grown in Pacific Northwest nurseries.

Influence of Ectomycorrhizal Fungal Inoculation on Growth and Root IAA Concentrations of Transplanted Conifers

Nursery Crops
USDA-ARS affiliated researchers tested the hypothesis that: (1) IAA concentration of mycorrhizal conifer roots is influenced by the in vitro (IAA and ethylene) production capacity of their associated ectomycorrhizal fungi; and (2) increased concentrations of root IAA cause an increase in root growth resulting in improved seedling growth and survival.

N Uptake, Soil Retention and Loss of Soil-Applied 15NH4 15NO3 in Young Fuji/M.26 Apple Trees with Different N Status

Nursery Crops
The purpose of research conducted on young apple (Malus domestica Borkh) trees was to determine the fate of soil applied nitrogen to young apple trees and the influence of tree nitrogen status on nitrogen uptake by young apple trees.

Nitrogen Mobilization, Nitrogen Uptake and Growth of Cuttings Obtained from Poplar Stock Plants Grown in Different N Regimes and Sprayed with Urea in Autumn

Nursery Crops
Research was conducted on poplar (Populus trichocarpa ×P. deltoides) cuttings to determine whether different weekly nitrogen fertigation regimes altered nitrogen mobilization, nitrogen uptake, and growth of cuttings.

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