Chlorosis of planted Engelmann spruce seedlings unrelated to nitrogen content

Ronco, Frank.

doi:10.1139/b70-117

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…Light is essential to seedling survival, but spruce does not establish readily in the open at high elevations in the Rocky Mountains. Seedlings develop a chlorotic appearance that is unrelated to nitrogen content (Ronco 1970c) and subsequently die. High light intensity (visible light can be as high as 13,000 footcandles (fc) from shortly after sunrise to shortly before sunset) is one of the factors contributing to the mortality of seedlings planted in the open (Ronco 1970d).…”

Section: Insolationmentioning

confidence: 99%

Silviculture of subalpine forests in the central and southern Rocky mountains : the status of our knowledge /

Alexander¹

1974

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Section: Insolationmentioning

confidence: 99%

Silviculture of subalpine forests in the central and southern Rocky mountains : the status of our knowledge /

Alexander¹

1974

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“…Matched seedlings shaded during the summer with upright shingles suffered few overwinter deaths. A process called solarization, taking place within exposed seedlings during the summer, caused them to die under the snow (Ronco 1967(Ronco , 1970a(Ronco , 1970c. A comparable process may occur in Douglas-fir (Zavitkovski and Woodard 1970) and other species.…”

Section: Lightmentioning

confidence: 99%

Silviculture of southwestern mixed conifers and aspen : the status of our knowledge /

Jones¹

1974

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GENERAL DESCRIPTION OF THE MIXED CONIFERS Mixed conifer forests occupy sites more moist than those usually occupied by pure stands of ponderosa pine. 2 Pinyon-juniper woodlands and the variable mixtures of Chihuahua pine, Apache pine, and evergreen shrubs are not mixed conifer forests within this definition. The common overstory species in mixed conifer forests are Douglas-fir, ponderosa pine, white fir, Engelmann spruce, aspen, southwestern white pine, blue spruce, and corkbark fir, often in more or less that order of abundance. In some

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“…Unfortunately, intensive cultivation of crops results in the removal of such nutrients every year, and the reserves of each element are depleted [ 35 ]. The effects of plant nutrient deficiencies can be manifested in various ways: inhibition of the plant’s growth dynamics, deformation of the plant, the appearance of pigmentation, or complete inhibition of plant growth [ 45 ]. Nitrogen is extremely important for plant growth, and the form of ammonium nitrogen present in tested extracts is extremely important as an easily assimilable form of nitrogen for plants [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

Beauveria bassiana Water Extracts’ Effect on the Growth of Wheat

Kramski

Nowinski

Kowalczuk

et al. 2023

Plants

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For a long time, entomopathogenic fungi were considered alternative biological control factors. Recently, these organisms were shown to fulfill additional roles supporting plants’ development, improving their resistance to disease and survival under stress conditions. Considering the documented interactions of B. bassiana with a wide range of plants, we aimed to evaluate the impact of aqueous extracts of the fungus on the growth of an agriculturally significant plant—wheat. The usage of fungal extracts instead of fungi could be beneficial especially in unfavorable, environmentally speaking, regions. Selected dilutions of the crude extract obtained under different pH and temperature conditions were used to establish the optimal method of extraction. Plant growth parameters such as length, total fresh weight, and chlorophyll composition were evaluated. Additionally, the antibacterial activity of extracts was tested to exclude negative impacts on the beneficial soil microorganisms. The best results were obtained after applying extracts prepared at 25 °C and used at 10% concentration. Enhancement of the tested wheat’s growth seems to be related to the composition of the extracts, which we documented as a rich source of macro- and microelements. Our preliminary results are the first confirming the potential of fungal water extracts as factors promoting plant growth. Further detailed investigation needs to be carried out to confirm the effects in real environment conditions. Additionally, the consistency of the plant growth stimulation across different entomopathogenic fungi and agriculturally used plant species should be tested.

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Chlorosis of planted Engelmann spruce seedlings unrelated to nitrogen content

Cited by 9 publications

References 5 publications

Silviculture of subalpine forests in the central and southern Rocky mountains : the status of our knowledge /

Silviculture of subalpine forests in the central and southern Rocky mountains : the status of our knowledge /

Silviculture of southwestern mixed conifers and aspen : the status of our knowledge /

Beauveria bassiana Water Extracts’ Effect on the Growth of Wheat

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