The Response of <i>Pinus radiata</i> to Manganese Applications at the Ruitersbos State Forest

Ronde, C. de; James, D B; Baylis, N. T.; Lange, P. W.

doi:10.1080/00382167.1988.9630355

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…In certain forest tree crops, such as Pinus radiata D. Don., Mn treatment in the nursery is recommended for plants to be established in Mn-deficient areas (Ronde et al, 1988). Considering the well-known susceptibility of cycads to micronutrient deficiencies, it is highly recommended that all plants be supplied with a complete micronutrient fertilizer during growth in containers and prior to field planting.…”

Section: Discussionmentioning

confidence: 99%

Symptoms and Treatment of Manganese Deficiency in Cycas revoluta Thunb.

Dehgan¹,

Durando²,

Yeager³

1994

HortSci

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Cycas revoluta, an important ornamental palm-like plant of warmer regions of the world, often exhibits a foliar chlorotic/necrotic dieback in landscapes. Despite a weak correlation (r2 ≤ 0.28) of percent symptoms with soil nutrient levels or pH, symptom severity was correlated more notably (r2=0.49) with Mn and had even a higher correlation (r2 = 0.61) with the Fe : Mn ratio. Anatomical examination of chlorotic leaflets indicated an accumulation of tanniniferous cells but did not provide direct evidence of Mn deficiency. Although field surveys indicated a link between low Mn levels and Fe : Mn ratio in the plant and appearance of the disorder, the manifestation of symptoms could not be directly correlated with any edaphic factors. However, identical symptoms were induced in young plants by withholding Mn in a solution culture experiment. Application of chelated Mn on expanding leaves alleviated the disorder, but only for the current growth flush. Irrigation frequency in concert with other cultural practices probably are more responsible for development of symptoms than actual soil Mn inadequacy. In consideration of acute susceptibility of cycads to micronutrient deficiencies, plants should be supplied with a complete micronutrient fertilizer during growth in containers and before field planting.

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Section: Discussionmentioning

confidence: 99%

Symptoms and Treatment of Manganese Deficiency in Cycas revoluta Thunb.

Dehgan¹,

Durando²,

Yeager³

1994

HortSci

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“…However, since soil acidification triggers Mn and Zn mobilization thereby increasing risks of leaching (Bergkvist et al, 1989;Watmough et al, 2005;Navrátil et al, 2007;Watmough et al, 2007), the negative balances in these high N deposition regions are to be expected. Negative Mn and Zn budgets are concerning as Mn limitation could lead to foliage mortality, reduced photosynthetic rates and tree growth, reduced biomass allocation to roots and even tree death (De Ronde et al, 1988;Göransson, 1994;Morales et al, 2018) and Zn limitation could lead to malformed trunks, dieback or limit regeneration (Boardman and McGuire, 1990;von Arnold et al, 2011). Nutrient limitation, particularly Mn deficiency, can also cause tree dehydration by affecting transpiration, water use efficiency, and root exploration (Hajiboland, 2012).…”

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Impacts of harvesting practices on nutrient balances of forests under high nitrogen deposition

Vos

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Webster et al., 2022). Therefore, to increase the reliability of the forest nutrient budget, it is of high importance to better quantify and understand post-harvest nutrient dynamics in relation to forest management practices, and account for possible effects of species and soil type. The effects of tree species and of forest management practices, including harvest intensity, harvest method, and post-harvest soil preparation which all affect the nutrient budget (Akselsson et al., 2007b;Piirainen et al., 2007;Thiffault et al., 2011;Egnell, 2017), are discussed in detail below. The influence of tree species on forest nutrient budgetsTree species can strongly influence the forest nutrient budget as tree species vary in the nutrient concentrations of their tissues, their total aboveground biomass and, therefore, in their nutrient stocks that will be exported by harvest (

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The Relationship between Site Characteristics and Pinus radiata Growth on the Tsitsikamma Plateau, South Africa

Louw

1991

South African Forestry Journal

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The Response of Pinus radiata to Manganese Applications at the Ruitersbos State Forest

Cited by 5 publications

References 2 publications

Symptoms and Treatment of Manganese Deficiency in Cycas revoluta Thunb.

Symptoms and Treatment of Manganese Deficiency in Cycas revoluta Thunb.

Impacts of harvesting practices on nutrient balances of forests under high nitrogen deposition

The Relationship between Site Characteristics and Pinus radiata Growth on the Tsitsikamma Plateau, South Africa

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