Wachstum, Mykorrhiza und Frostresistenz von Fichtenjungpflanzen bei Düngung mit verschiedenen Stickstoffgaben

Pümpel, Brigitte; Gôbl, F.; Tranquillini, Walter

doi:10.1111/j.1439-0329.1975.tb00450.x

Cited by 17 publications

(5 citation statements)

References 13 publications

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“…often reported to have a negative influence on frost This could indicate that frost hardiness in these species hardiness (Huokuna and Hiivola 1974, Christersson is not necessarily inhibited by excess of nitrogen. This 1975, Pumpel et al 1975, Arsvoll and Larsen 1977 is supported by studies on alfalfa which Levitt 1980, Tyler et al 1981, Stimart and Gooman indicated a positive correlation between frost hardiness 1985). Most of the studies on interaction between nitro-and nitrogen fertilization (Vezina and Nadeau 1991).…”

mentioning

confidence: 76%

Effect of nitrogen supply on frost resistance, nitrogen metabolism and carbohydrate content in white clover (Trifolium repens)

Sandli

Svenning

Rosnes

et al. 1993

Physiologia Plantarum

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Effects of mineral nitrogen (2, 4, 6 and 8 mM NH NO ) and nodulation with Rhizobium on frost hardiness in seedlings of white clover (Trifolium repens) have been studied. Seedlings of a population from Bodø (67°N lat.) were grown in Leonard jars under controlled conditions in a phytotron. For induction of frost hardening, plants were first exposed to 12 h photoperiod conditions for 2 weeks at 18°C, then for 2 weeks at 6°C and finally for 2 weeks at 0.5°C. Frost hardiness after treatments at 6 and 0.5°C was significantly enhanced by increasing nitrogen supply and was positively correlated with total nitrogen content of the stolons. Frost hardiness of nodulated plants correlated to the tissue nitrogen concentration. Content of soluble proteins in stolons decreased during hardening at 6°C but did not change during treatment at 0.5°C. There were minor changes in total amount of free amino acids during hardening. Both absolute and relative amounts of proline and arginine increased, and those of asparagine decreased during hardening. Absolute amounts of all free amino acids increased with increasing nitrogen supply, but the changes during hardening were similar in all treatments. There was a significant increase in the content of soluble carbohydrates during hardening. However, this increase was inversely related to nitrogen supply.

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mentioning

confidence: 76%

Effect of nitrogen supply on frost resistance, nitrogen metabolism and carbohydrate content in white clover (Trifolium repens)

Sandli

Svenning

Rosnes

et al. 1993

Physiologia Plantarum

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“…On the other hand, a high concentration of N can delay the onset of dormancy and thus increase the risk of damage during early frost episodes in autumn (Cannell and Sheppard 1982;Burke et al 1992). From a N fertilisation experiment with spruce seedlings it was concluded that the more N the seedlings received, the faster they flushed in spring, and the more sensitive the new needles and shoots were to frost during the growing season (Pümpl et al 1975). An increased number of injured cells during winter has also been measured in the needles of Scots pine trees which had been fertilised with excess N (Soikkeli and Kärenlampi 1984).…”

Section: Introductionmentioning

confidence: 97%

Frost hardiness in bark and needles of Norway spruce in southern Sweden

Jönsson

Kivimäenpää²,

Stjernquist

et al. 2001

Trees

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Bark necrosis and resin flows in Norway spruce have increased in southern Sweden over the last few decades. Frost damage late in spring has been suggested as a possible cause, but other factors besides the climate may have contributed to the damage. The nutrient status influences the hardening processes and plants with poor nutritional conditions have an increased sensitivity to frost. In this study the sensitivity to frost of bark and the hardiness status of needles of Norway spruce were compared with the nutrient status at two sites with different soil fertility. The trees were 30-40 years old. The hardiness status of the bark and needles was negatively affected by low concentrations of P and Mg.

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“…This practice of fall nutrient loading can contribute to enhanced seedling stress resistance [110]. For example, in spruce species increased nitrogen application in seedlings that have already set bud increases freezing tolerance [111][112][113][114][115], while low nitrogen application limits the development of freezing tolerance [42]. Douglas-fir seedlings with budset and low nitrogen levels were less cold hardy than seedlings with higher nitrogen levels [116].…”

Section: Cultural Practicesmentioning

confidence: 99%

“…In reviewing early literature on potassium use as a cultural practice in cold hardening, Timmis [116] concluded that the balance between potassium and nitrogen determines the level of cold hardiness. In studies with spruce species, phosphorus application promotes freezing tolerance [119], while in other instances there was little effect [112,113,118]. The role of nitrogen, potassium and phosphorous in developing freezing tolerance appears to vary with species, rate and timing of application in the nursery [11,17,[120][121][122]].…”

Section: Cultural Practicesmentioning

confidence: 99%

Fall Acclimation and the Lift/Store Pathway: Effect on Reforestation

Grossnickle¹,

South²

2014

TOFSCIJ

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This review compares fall acclimation patterns and lift/store practices for Pseudotsuga menziesii var. menziesii, Picea glauca (Moench) Voss x P. engelmannii Parry ex engelm and Pinus taeda L. seedlings. Spruce seedlings achieve budset and an endodormant state in late summer, coastal Douglas-fir in early fall, while loblolly pine achieves a less endodormant state with a limited amount of mitotic activity. Natural chilling during the fall reduces days to budbreak (DBB) and increases freezing tolerance, with northern species achieving greater freezing tolerance. Although root growth potential (RGP) in some years may increase from early fall to midwinter , this trend does not always occur. Chilling hours and/or freezing tolerance status is used to initiate storage of Douglas-fir and spruce seedlings but there is no proven attribute to make the lifting decision for loblolly pine. When properly hardened, all species can be cooler stored to meet lift/store requirements of a few months, though fall lifted interior spruce seedlings are typically freezer stored for up to six months. Lengthy storage can cause declines in DBB, freezing tolerance, RGP, and carbohydrate reserves. Douglas-fir and interior spruce seedlings require an appropriate length of fall acclimation, typically including chilling, to develop a level of hardiness for lengthy storage and high survival after outplanting. Loblolly pine seedlings benefit from chilling, though non-chilled, hardened seedlings may exhibit high survival after four weeks of cooler storage. Each species has a unique fall acclimation pattern making it difficult to define universal culture practices across all regional forest regeneration programs.

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Wachstum, Mykorrhiza und Frostresistenz von Fichtenjungpflanzen bei Düngung mit verschiedenen Stickstoffgaben

Cited by 17 publications

References 13 publications

Effect of nitrogen supply on frost resistance, nitrogen metabolism and carbohydrate content in white clover (Trifolium repens)

Effect of nitrogen supply on frost resistance, nitrogen metabolism and carbohydrate content in white clover (Trifolium repens)

Frost hardiness in bark and needles of Norway spruce in southern Sweden

Fall Acclimation and the Lift/Store Pathway: Effect on Reforestation

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