scholarly journals Influence of wood ash on soil chemical composition and biochemical parameters of young Scots pine

2006 ◽  
Vol 55 (2) ◽  
pp. 91
Author(s):  
M Mandre
Keyword(s):  
Chemical Composition ◽  
Scots Pine ◽  
Biochemical Parameters ◽  
Wood Ash

Chemical composition and carbon mineralisation potential of Scots pine needles at different stages of decomposition

1998 ◽  
Vol 30 (5) ◽  
pp. 583-595 ◽  
Author(s):  
M.M. Coûteaux ◽  
K.B. McTiernan ◽  
B. Berg ◽  
D. Szuberla ◽  
P. Dardenne ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Scots Pine ◽  
Pine Needles ◽  
Carbon Mineralisation ◽  
Mineralisation Potential ◽  
Scots Pine Needles

scholarly journals Litterfall in a Scots Pine Forest on Inland Dunes in Central Europe: Mass, Seasonal Dynamics and Chemistry

Forests ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 678 ◽  
Author(s):  
Justyna Jasińska ◽  
Piotr Sewerniak ◽  
Radosław Puchałka
Keyword(s):  
Chemical Composition ◽  
Scots Pine ◽  
Pine Forest ◽  
Slope Aspect ◽  
Different Seasons ◽  
Scots Pine Forest ◽  
North And South ◽  
Inland Dunes ◽  
Litterfall Properties ◽  
Scots Pine Stands

Extensive areas of inland dunes are commonly overplanted with Scots pine (Pinus sylvestris). However, thus far the pine litterfall has not been investigated in detail in Scots pine stands overgrowing the landforms. Therefore, the aim of this study was to analyse the mass and chemical composition of litterfall in a dune Scots pine forest, paying special attention to the differences in the properties of the particular categories of litterfall (needles, twigs, bark, cones, residue) occurring in different seasons. The secondary goal of the research was to investigate the possible effect of contrasting slope aspect on litterfall properties. Litterfall was examined for three years on a north- and south-facing dune slope using the litter trap method. The mass and chemical composition (C, N, P, K, Mg, Mn, Ca, Fe, Al) of each litterfall category was analysed. Average annual mass of litterfall ranged from 322.0 ± 2.6 (slope N) to 361.9 ± 34.2 (slope S) g m−2 year−1. Fluctuations in the annual concentrations of N, P, K and Mg were determined, which was the result of their gradual withdrawal from needles before they were dropped in autumn. Immobile or poorly mobile elements (i.e., Mn, Ca, Fe and Al) were found to be steadily accumulated during the year in fallen tissues. The studied elements can be set in the following order as regards the annual pools which return to a topsoil with litterfall: C > N > Ca > K > Mg > Mn > Al > P > Fe on slope N and C > Ca > N > K > Mg > Al > P > Mn > Fe on slope S. Despite the fact that the residue (seeds etc.) constitutes a much smaller part of the total litterfall mass than the needles, comparable amounts of N, P, K, Al and Fe return to a topsoil with both these categories. The only element for which we determined differences in concentrations regarding slope aspect was Mn: the concentrations were significantly higher for needles, twigs, bark and cones on the N than the S slope.

scholarly journals Effect of wood ash mulch on growth of Scots pine seedlings after transplanting into peat soil: A pilot study

2018 ◽  
Vol 64 (No. 1) ◽  
pp. 9-16
Author(s):  
Heiskanen Juha ◽  
Uotila Karri ◽  
Ruhanen Hanna
Keyword(s):  
Scots Pine ◽  
Power Plants ◽  
Peat Soil ◽  
Field Research ◽  
Wood Ash ◽  
Control Treatment ◽  
Seedling Mortality ◽  
Growing Period ◽  
Forest Sites ◽  
Pine Seedlings

Wood ash production from power plants and the use of recycled ash for earthworks and forest peatland fertilization have increased markedly in Finland in recent decades. In this study, effects of wood-based ash on potted Scots pine seedlings were tested in a greenhouse. Seedlings were grown for one to two growing periods in peat with ash mulch thicknesses 0–8 cm. Seedlings grew well in ash thicknesses 0–4 cm during the first growing period. Seedling mortality (60%) occurred with the thickest ash mulch. Soluble nutrients in press water extracts were high compared with the control treatment. N and P levels were suboptimal also with ash mulch. During the second growing period, seedling mortality occurred (17%) already with the thinnest ash mulch. The results suggest that ash mulch around seedlings in quantities of less than 0.5 cm (or 7 kg·m<sup>–2</sup>) is feasible and is not detrimental to Scots pine seedlings. The results provide foundation for further field research on the longer-term impacts of wood ash mulch on planted seedlings on boreal forest sites and on the feasibility testing of the mulch as a supplement to or substitute for the soil preparation for seedling planting.

Decomposition of needle litter and its organic chemical components: theory and field experiments. Long-term decomposition in a Scots pine forest. III

1984 ◽  
Vol 62 (12) ◽  
pp. 2880-2888 ◽  
Author(s):  
Björn Berg ◽  
Göran I. Ågren
Keyword(s):  
Chemical Composition ◽  
Mass Loss ◽  
Scots Pine ◽  
Field Experiments ◽  
Average Rate ◽  
Chemical Components ◽  
Organic Chemical ◽  
Labile Fraction ◽  
Lignin Fraction ◽  
Scots Pine Forest

Scots pine needles were collected and field incubations were begun in the autumn of 6 consecutive years. The incubated needles were sampled three times a year and analysed for mass loss and chemical composition. The longest incubation time obtained was 1825 days. Four series of needles from a nutrition experiment (three levels of nutrient application and one control) sampled at one occasion were followed in the same way for 1448 days. The logarithm of remaining mass versus time of the pooled samples fits a linear regression well (average rate constant = 0.286 year−1, r2 = 0.963, n = 75). A higher resolution shows, however, that the decay rate decreases with time as the chemical composition changes. To better understand the decomposition process we have formulated a mathematical model for the course of mass loss as a system consisting of two fractions, a readily decomposable (labile) one and a refractory one. The mass loss from the two fractions can be direct or mass can be transferred from the refractory to the labile fraction. The model allows us to calculate the variation of the refractory fraction with time (generally there will always be some labile material in the system) and the decrease of the decomposition rate as a function of time or as a function of the concentration of the refractory fraction. We have found it possible to identify the refractory fraction both as the lignin fraction and as the nonsoluble fraction of the needles. The first identification yields a long transient response, whereas the second gives a system rapidly reaching a steady state. In both cases, the decay of the refractory material results in transfer of material to the labile fraction.

scholarly journals Comparison of granulated and loose ash in fertilisation of Scots pine on peatland

Silva Fennica ◽  
2020 ◽  
Vol 54 (2) ◽  
Author(s):  
Jyrki Hytönen ◽  
Hannu Hökkä
Keyword(s):  
Scots Pine ◽  
Volume Growth ◽  
Wood Ash ◽  
Control Treatment ◽  
Initial Increase ◽  
Stand Volume ◽  
Growth And Nutrition ◽  
Growth Increase ◽  
The Mean ◽  
Poor Site

The effects of wood ash fertilisation on tree nutrition and growth on forested peatlands has been studied using loose ash, but in practice, ash fertilisation is done almost exclusively with granulated ash. In this study, the effects of granulated ash and loose ash (both 5 Mg ha) on the growth and nutrition of Scots pine ( L.) stands were compared between a nitrogen-poor and a nitrogen-rich site over 15 years. On the nitrogen-rich site, wood ash application was also compared with commercial PK fertilisation. On the nitrogen-rich site, mean stand volume growth increase over unfertilised control treatment during the 15 year study period using granulated ash and commercial PK fertiliser was of the same magnitude (on average, 2.2–2.3 m ha a). However, when loose ash was used growth increase over control was higher (3.7 m ha a). On the nitrogen-poor site, the mean growth increase gained by loose or granulated ash (1.4–1.5 m ha a) over the unfertilised control treatment was not significant. Fertilisation with loose ash or PK increased foliar P, K and B concentrations already in the first or second growing season, following fertilisation on both sites. Granulated ash increased foliar P concentrations on the nitrogen-rich site less than loose ash. After an initial increase, foliar P, K and B concentrations decreased at the end of study period. On the nitrogen-poor site, foliar P concentrations were below the deficiency limit by the end of the study period.–1Pinus sylvestris3–1–13–1–13–1–1

scholarly journals Effect of substituting maize grain with cobs treated with combinations of urea and wood ash on chemical composition and in sacco degradability

2021 ◽  
Vol 48 (5) ◽  
pp. 239-244
Author(s):  
A. Abdulazeez ◽  
O. R. Madibela ◽  
C. M. Tsopito
Keyword(s):  
Chemical Composition ◽  
Degradation Kinetics ◽  
Wood Ash ◽  
Composition Chimique ◽  
Acid Detergent Lignin ◽  
Acid Detergent Fibre ◽  
Maize Grain ◽  
Maize Cobs ◽  
In Sacco Degradability ◽  
In Sacco

An experiment was conducted to determine the effect of substituting maize grain with maize cobs treated with 25% urea (U) plus 75% wood ash (WA) on chemical composition and in sacco degradability. Maize grain was substituted with graded levels of 25U75WA in the dietary ingredients and the treatments were: 100M = 100% maize grain, 66M34C = 66% maize grain plus 34% treated maize cobs, 34M66C = 34% maize grain plus 66% treated maize cobs and 100C = 100% treated maize cobs. Samples were analyzed for dry matter (DM), organic matter (OM), ash, crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL); they were incubated in saccofor 6, 12, 24, 48 and 72 hrs and their DM degradation kinetics described using the equation y = a + b ct (1- e- ). Results indicated that as maize grain is substituted with treated maize cobs, NDF, ADF and ADL also increased, however only the neutral detergent soluble (NDS) for treatment 100C was reduced. At 72 hrs of incubation, treatment 34M66C had the highest DM degradation, rapidly soluble fraction 'a' and potential degradability 'a+b'. It was concluded that maize cobs treated with combinations of urea and WA could substitute 66% of maize grain in sheep diets.     Une expérience a été menée pour déterminer l'effet de la substitution du grain de maïs par des épis de maïs traités avec 25 % d'urée (U) plus 75 % de cendre de bois (WA) sur la composition chimique et la dégradabilité du sac. Le grain de maïs a été remplacé par des niveaux gradués de 25U75WA dans les ingrédients alimentaires et les traitements étaient : et 100C = 100 % d'épis de maïs traités. Les échantillons ont été analysés pour la matière sèche (MS), la matière organique (MO), les cendres, les protéines brutes (CP), les fibres au détergent neutre (NDF), les fibres au détergent acide (ADF) et la lignine au détergent acide (ADL) ; ils ont été incubés dans sacco pour 6, 12, 24, 48 et 72 heures et leur cinétique de dégradation de la matière sèche décrite en utilisant l'équation y = a + b (1-e-ct). Les résultats ont indiqué que lorsque le grain de maïs est remplacé par des épis de maïs traités, NDF, ADF et ADL ont également augmenté, mais que seul le détergent neutre soluble (NDS) pour le traitement 100C a été réduit. À 72 heures d'incubation, le traitement 34M66C présentait la plus forte dégradation de MS, la fraction rapidement soluble « a » et la dégradabilité potentielle « a+b ». Il a été conclu que les épis de maïs traités avec des combinaisons d'urée et d'AO pouvaient remplacer 66% des grains de maïs dans l'alimentation des moutons.

scholarly journals Composition and volatility of SOA formed from oxidation of real tree emissions compared to single VOC-systems

2019 ◽  
Author(s):  
Arttu Ylisirniö ◽  
Angela Buchholz ◽  
Claudia Mohr ◽  
Zijun Li ◽  
Luis Barreira ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Scots Pine ◽  
Flow Reactor ◽  
Oxidation Products ◽  
Mass Yield ◽  
Chemical Complexity ◽  
Biogenic Voc ◽  
Volatile Products ◽  
Plant Emissions ◽  
Induced Changes

Abstract. Secondary organic aerosol (SOA) is an important constituent of the atmosphere where SOA particles are formed chiefly by the condensation or reactive uptake of oxidation products of volatile organic compounds (VOC). The mass yield in SOA particle formation, as well as the chemical composition and volatility of the particles are determined by the identity of the VOC precursor(s) and the oxidation conditions they experience. In this study, we used an oxidation flow reactor to generate biogenic SOA from the oxidation of Scots pine emissions. Mass yields, chemical composition, and volatility of the SOA particles were characterized and compared with SOA particles formed from oxidation of α-pinene and of a mixture of acyclic/monocyclic sesquiterpenes (farnesenes and bisabolenes), which are significant components of the Scots pine emissions. SOA mass yields for Scots pine emissions dominated by farnesenes were lower than for α-pinene, but higher than for the artificial mixture of farnesenes and bisabolenes. The reduction in the SOA yield in the farnesenes and bisabolenes dominated mixtures is due to C=C bond scission in these acyclic/monocyclic sesquiterpenes during ozonolysis leading to smaller and generally more volatile products. SOA particles from the oxidation of Scots pine emission had similar or lower volatility than SOA particles formed from either of single precursor. Applying physical stress to the Scots pine plants increased monoterpene emissions, which further decreased SOA particle volatility and increased SOA mass yield. Our results highlight the need to account for the chemical complexity and structure of real-world biogenic VOC emissions and stress-induced changes to plant emissions when modelling SOA production and properties in the atmosphere. These results emphasize that simple increase or decrease of relative monoterpene and sesquiterpene emissions should not be used as indicator of SOA particle volatility.

Does chemical composition of individual Scots pine trees determine the biodiversity of their associated ground vegetation?

2005 ◽  
Vol 8 (4) ◽  
pp. 364-369 ◽  
Author(s):  
Glenn R. Iason ◽  
Jack J. Lennon ◽  
Robin J. Pakeman ◽  
Vera Thoss ◽  
Joan K. Beaton ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Scots Pine ◽  
Ground Vegetation ◽  
Pine Trees

A reciprocal decomposition experiment of Scots pine needles 19 yr after wood ash fertilization

2004 ◽  
Vol 36 (4) ◽  
pp. 731-734 ◽  
Author(s):  
Jonna Perkiömäki ◽  
Teuvo Levula ◽  
Hannu Fritze
Keyword(s):  
Scots Pine ◽  
Wood Ash ◽  
Pine Needles ◽  
Scots Pine Needles
Sign in / Sign up

Export Citation Format

Share Document