scholarly journals Soil preparation method affects outplanting success of Norway spruce container seedlings on till soils susceptible to frost heave

Silva Fennica ◽  
2013 ◽  
Vol 47 (1) ◽  
Author(s):  
Juha Heiskanen ◽  
Timo Saksa ◽  
Jaana Luoranen
Keyword(s):  
Norway Spruce ◽  
Preparation Method ◽  
Frost Heave ◽  
Container Seedlings ◽  
Soil Preparation

scholarly journals Effect of soil preparation method on economic result of Norway spruce regeneration chain

Silva Fennica ◽  
2010 ◽  
Vol 44 (3) ◽  
Author(s):  
Karri Uotila ◽  
Juho Rantala ◽  
Timo Saksa ◽  
Pertti Harstela
Keyword(s):  
Norway Spruce ◽  
Preparation Method ◽  
Economic Result ◽  
Soil Preparation

scholarly journals Influence of spot mounding on height growth and tending of Norway spruce: case study in Latvia

2016 ◽  
Vol 65 (1) ◽  
pp. 24-33 ◽  
Author(s):  
Baiba Dzerina ◽  
Sigitas Girdziusas ◽  
Dagnija Lazdina ◽  
Andis Lazdins ◽  
Jurģis Jansons ◽  
...  
Keyword(s):  
Norway Spruce ◽  
Preparation Method ◽  
Forest Type ◽  
Mineral Soil ◽  
Growing Season ◽  
Or Efficiency ◽  
Negative Effect ◽  
Soil Preparation ◽  
Positive Effect

Abstract Norway spruce is commonly regenerated by planting and disc trenching is by far the most widely used soil preparation method in Latvia; however, in specific site conditions other methods might be beneficial. Therefore aim of our study was to assess influence of spot mounding on early growth and tending of Norway spruce in hemiboreal forests. Spot mounding was compared with disc trenching or no soil preparation in central part of Latvia (57° N 24° E) in five different forest types, where two-year-old containerized Norway spruce seedlings were planted. Influence of soil preparation method on tending was assessed in the same region in two different sites in a single forest type on drained fertile mineral soil. Spot mounding had positive effect on the height increment of the dominant trees at the 6th to 8th growing season. Mean height of Norway spruce at the end of 8th growing season on mounds significantly exceeded that on unprepared soil: 179 ± 6.5 and 152 ± 6.2 cm, respectively. Similarly mean height on mounds was significantly larger than on furrows: 209 ± 3.9 and 154 ± 4.0 cm, respectively. Projective vegetation cover before the tending was significantly higher in spot-mounded, but after - in disc trenched sites. Networking time for brashsaw operators in spot-mounded (478 min/ha-1) and disc trenched (462 min/ha-1) sites was similar (p > 0.05). Overall, spot mounding ensured more suitable microenvironment resulting in higher productivity of planted trees and had no negative effect on quality or efficiency of tending, therefore its wider use is recommended.

scholarly journals Extending the planting period of dormant and growing Norway spruce container seedlings to early summer

Silva Fennica ◽  
2005 ◽  
Vol 39 (4) ◽  
Author(s):  
Jaana Luoranen ◽  
Risto Rikala ◽  
Kyösti Konttinen ◽  
Heikki Smolander
Keyword(s):  
Norway Spruce ◽  
Early Summer ◽  
Container Seedlings

scholarly journals Covering Norway spruce container seedlings with reflective shading cloth during field storage affects seedling post-planting growth

New Forests ◽  
2021 ◽  
Author(s):  
Mikko Tikkinen ◽  
Johanna Riikonen ◽  
Jaana Luoranen
Keyword(s):  
Norway Spruce ◽  
Grey Mould ◽  
Storage Conditions ◽  
Climatic Conditions ◽  
Test Field ◽  
Stem Water Potential ◽  
Negative Effects ◽  
Seedling Mortality ◽  
Container Seedlings ◽  
Growing Seasons

AbstractThe field storage of container seedlings is often a necessity after the seedlings have been transported from nurseries close to the regeneration area. Suboptimal storage conditions can lead to reduced growth or even seedling mortality. Supporting favourable conditions for the seedlings during storage requires labour, especially for the watering of seedlings, and therefore increases the costs of forest regeneration. In this study, we examined the effects of covering Norway spruce container seedlings with a reflective shading cloth and neglecting the watering during field storage. This was done by measuring the drying of the seedlings during field storage, the rooting of the seedlings when planting, and the subsequent survival and performance in the field two and three growing seasons after planting. The study comprised one-year-old Norway spruce container seedlings covered with reflective shading cloth and seedlings with no cover (subject to rainfall) in 2012 and 2013; additionally, in 2013, replicates from both treatments were stored in conditions where rainfall was impeded. The stem water potential was measured, a rooting test was carried out, and the seedlings were planted in the test field weekly over 42 days of field storage without watering. As a novel finding, the results indicate that covering the seedlings with a reflective shading cloth during the field storage increased the risk of grey mould in summer storage and led to negative effects regarding post planting seedling development. The application of a shading cloth directly on the seedlings cannot be recommended to prolong the watering intervals during field storage in the current climatic conditions in Southern Finland, where the risk of grey mould is high.

scholarly journals SEASONALITY OF THE BARK TANNINS CONTENT OF FIVE-YEAR-OLD Acacia mangium TREES GROWN IN NORTHEAST BRAZIL

2021 ◽  
Vol 45 ◽  
Author(s):  
Jaltiery Bezerra de Souza ◽  
Tatiane Kelly Barbosa de Azevêdo ◽  
Alexandre Santos Pimenta ◽  
João Paulo Silva Gomes ◽  
João Gilberto Ucella Meza Filho ◽  
...  
Keyword(s):  
Rainy Season ◽  
Condensed Tannins ◽  
Preparation Method ◽  
Acacia Mangium ◽  
Experimental Treatment ◽  
Hot Water ◽  
Tree Bark ◽  
Preparation Methods ◽  
Significant Difference ◽  
Soil Preparation

ABSTRACT This study aimed to assess the influence of the seasonality on the bark tannins content of Acacia mangium trees grown in the Northeastern Brazilian Region and the effect of soil preparation on the results. Two experimental plots of 1.0 ha each were submitted to different soil preparation methods, with two different intensities. The experimental design consisted of four treatments, two types of soil preparation and, two different bark collection seasons (end of the rainy and dry seasons). The bark of the trees was collected in each treatment and the contents of condensed tannins were determined. For each experimental treatment, 15 trees were harvested and debarked. Bark material was submitted to extraction with hot water, obtaining the total solids content (TSC), Stiasny index (I), and the condensed tannins content (CTC). There was no influence of the soil preparation method on the TSC, I, and CTC. However, there was a significant difference in these parameters for tree bark collected in the rainy season, with higher values. The less intensive soil preparation method is recommended due to its lower cost, and bark should be collected at the end of the rainy season for the best yield of condensed tannins.

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