The relationship between the needle age and the growth rate in Scots pine (Pinus sylvestris): a retrospective analysis by needle trace method (NTM)

Drenkhan, Rein; Kurkela, Timo; Hanso, M.

doi:10.1007/s10342-006-0131-9

Cited by 21 publications

(8 citation statements)

References 32 publications

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“…The height growth of trees at this phase of a stand is decisive for their fate. As expected, losses from the productive needle sets had to be accompanied by the growth rate decreases (Drenkhan et al. 2006; Kurkela et al.…”

Section: Discussionsupporting

confidence: 70%

Lophodermium needle cast, insect defoliation and growth responses of young Scots pines in Estonia

Hanso

Drenkhan

2011

Forest Pathology

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Using a retrospective approach, based on historical needle cast disease and insect pest records, data series of needle losses (reconstructed by the use of the needle trace method), tree growth parameters and meteorological data were studied to determine the impact of the appropriate pointer (epidemic or calamity) years on the annual radial and height increment of 46 sample trees in six Scots pine (Pinus sylvestris) stands in Estonia from 1887 to 2006. First, the needle cast epidemics during the last 120 years were retrospectively determined, with resulting 4.6 epidemics per decade as a mean frequency. If the sum of precipitation from May to August reached 300 mm (the mean of 12 epidemic years studied: 361 ± 15 mm), an epidemic of needle cast caused by Lophodermium seditiosum might follow the next year in young plantations. For insect defoliators, similarly clear triggering threshold values of precipitation or temperature could not be determined, although dry and warm summers and mild winters supported the calamities. We separately detected that both larger needle losses and growth reductions in trees related to Lophodermium needle cast epidemic years lasted until the same age of pines, 22-24 years, but for insect pest (diprinoid sawflies) calamity years the growth reduction lasted longer. The relevance of these findings for the prediction of Lophodermium needle cast epidemics is briefly discussed.

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Section: Discussionsupporting

confidence: 70%

Lophodermium needle cast, insect defoliation and growth responses of young Scots pines in Estonia

Hanso

Drenkhan

2011

Forest Pathology

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“…It can be concluded that needle cast infection significantly reduced the height Figure 4. Our results are in line with the previous findings by Staley and Nicholls (1989), Kanaskie (1990), Drenkhan, Kurkela and Hanso, (2006) and Vuorinen (2008) -they have noted that the degree of needle cast infection affects the tree growth potential due to significant damages of current year needles, which play an important role in tree growth. It is especially important for young trees, having lower needle biomass and nutrient reserves.…”

Section: Resultssupporting

confidence: 93%

Influence of Meteorological Factors on Needle Cast Damage in Young Scots Pine Stands

Polmanis

Baumane

Baumanis

et al. 2015

Proceedings of the Latvia University of Agriculture

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Climate changes are expected to create favourable conditions for development and spread of diseases. Therefore, the impact of meteorological factors on needle cast damage, and relationship between degree of damage and growth of trees had been assessed in the study. Analysis was carried out in open-pollinated progeny trial of Norupe seed orchard clones, established in the spring of 2006, in Ltd. “Rīgas meži” (LLC “Riga Forests”). In this trial needle cast damage was assessed in three consecutive years using a fivegrade scale, dependent on the level of damages on current year needles. At the end of each growing season a tree height was measured. Plantation was significantly affected by infection average more than 66% of current year damaged by the disease. Significant (p<0.001) correlation was detected between the degree of needle cast damage and tree height increment as well as the tree height. Significant (p<0.001) differences in needle cast infection level as well as tree height and height increment were found also between open-pollinated families. The results suggest a potentially increasing needle cast infection due to predicted increase of temperature and precipitation, as well as the potential to select more resistant families against damages of this disease in tree breeding process.

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“…infection significantly affects the current year's height increase of a tree and tree growth potential, and it is also noted by other scientists (Staley & Nicholls, 1989;Kanaskie, 1990). Needlecast primarily damages the current year (autumn infected) needles, which have a greater role in ensuring the growth of tree overground parts than older needles (Drenkhan, Kurkela, & Hanso, 2006). Martinsson (1979) found a significant negative correlation (r = -0.80, α = 0.01) between the current year's relative increase of tree length and needle loss determined by needlecast infection degree.…”

Section: Resultsmentioning

confidence: 99%

Occurrence of Lophodermium spp. in young scots pine stands in Latvia

Polmanis¹,

Gaitnieks²,

Beļeviča³

et al. 2017

Research for Rural Development

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Scots pine (Pinus sylvestris L.) is one of the most widespread coniferous species in boreal zones and it has a considerable economic importance in the Baltic countries. The impact of fungi on Scots pine has been known also historically, but it is predicted that it will increase in future due to climate changes that will have a positive effect on incidence and vitality of various species of fungi. The aim of the study was to characterize the occurrence of Lophodermium spp. in young stands of Scots pine in Latvia. Needle samples were collected from young pine stands (aged 1 -14 years) located in all regions of Latvia. DNA extraction from needles was done using modified CTAB protocol, presence of Lophodermium in total extracted DNA was detected using a PCR method. Meteorological data -air temperature and precipitation -were obtained from all 34 observation stations of the Latvian Environment, Geology and Meteorology Centre. The presence of Lophodermium spp. was detected in all surveyed stands, and occurrence differences between the western and eastern regions were significant (p = 0.004). The occurrence of Lophodermium spp. in the eastern and western regions was affected by the meteorological conditions in autumn and winter of the previous years, as well as differences in the given years' air temperature and precipitation. In 2016, the eastern region of Latvia had a higher May-August precipitation and, to a lesser extent, temperature, which correlated with a higher occurrence of Lophodermium spp.

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The relationship between the needle age and the growth rate in Scots pine (Pinus sylvestris): a retrospective analysis by needle trace method (NTM)

Cited by 21 publications

References 32 publications

Lophodermium needle cast, insect defoliation and growth responses of young Scots pines in Estonia

Lophodermium needle cast, insect defoliation and growth responses of young Scots pines in Estonia

Influence of Meteorological Factors on Needle Cast Damage in Young Scots Pine Stands

Occurrence of Lophodermium spp. in young scots pine stands in Latvia

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