Effects of site preparation on ponderosa pine (<i>Pinus</i><i>ponderosa</i>), associated vegetation, and soil properties in south central Oregon

Ross, Darrell W.; Scott, W. P.; Heninger, Ronald L.; Walstad, John D.

doi:10.1139/x86-105

Cited by 16 publications

(10 citation statements)

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“…Lund-Høie (1984) reports, however, that the survival of newly planted Norway spruce is highly related to the control of competing vegetation by glyphosate. A similar observation is also reported by Ross et al (1986) regarding Pinus ponderosa. They also report improved growth of pine after the chemical treatment.…”

Section: Frequency Of Speciessupporting

confidence: 90%

Glyphosate application in forest—ecological aspects

Lund‐H⊘ie

Gr⊘nvold²

1987

Scandinavian Journal of Forest Research

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Vegetation changes caused by glyphosate application or hand cutting were evaluated on five experimental sites. Reactions on Norway spruce (Picea abies L.) were also recorded. Betula spp. and Sorbus aucuparia appeared sensitive to glyphosate and the rate of recoverage of the canopy was related to the extent of control. Vegetative regeneration was stimulated by hand cutting and suppressed by glyphosate. Except for fems, which showed high sensitivity to glyphosate and slow regeneration, the great majority of species in the height level below 1 meter were classified as moderately tolerant. The successional development appeared relatively rapid. Glyphosate application caused an increase in the diversity of the plant community established after application. The release of Norway spruce from competition following glyphosate application caused a more rapid increase in the number of plants higher than 50 cm on glyphosate areas than on reference areas.

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Section: Frequency Of Speciessupporting

confidence: 90%

Glyphosate application in forest—ecological aspects

Lund‐H⊘ie

Gr⊘nvold²

1987

Scandinavian Journal of Forest Research

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“…Total ground vegetation biomass in discplowed area was about 30% smaller than in the adjacent uncut forest (Palviainen et al 2005a) still 5 years after treatment. Other studies have also shown a strong reduction in ground vegetation biomass following soil preparation (Swindel et al 1983;Ross et al 1986;Staples et al 1999). At our site, the impact of site preparation on ground vegetation biomass was greater than that of the clear-cutting.…”

Section: Differences Between Site Preparation Surfacessupporting

confidence: 56%

Development of ground vegetation biomass and nutrient pools in a clear-cut disc-plowed boreal forest

Palviainen

Finér²,

Laurén³

et al. 2007

Plant Soil

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Nutrient leaching from forest substrate after clear-cutting and subsequent soil preparation is strongly influenced by the capacity of ground vegetation to sequester the released nutrients. We studied the rates and patterns of biomass and nutrient accumulation in ground vegetation growing on ridges, in furrows and on undisturbed surfaces for 2-5 years after disc-plowing in eastern Finland. The biomass of mosses on ridges remained significantly lower than that in furrows and on undisturbed surfaces. Field layer biomass on ridges and in furrows was significantly lower than on undisturbed surfaces throughout the study period. Field layer biomass increased more on ridges than in furrows. Root biomass on ridges and undisturbed surfaces was considerably higher than in furrows. Five years after disc-plowing, total biomass and nutrient pools for ridges (biomass 4,975 kg ha −1 , N 40 kg ha −1 , P 5 kg ha −1 , K 20 kg ha −1 and Ca 18 kg ha −1 ) and undisturbed surfaces (biomass 5,613 kg ha −1 , N 43 kg ha −1 , P 5 kg ha −1 , K 22 kg ha −1 and Ca 18 kg ha −1 ) were similar, but considerably lower for furrows (biomass 1,807 kg ha −1 , N 16 kg ha −1 , P 2 kg ha −1 , K 10 kg ha −1 and Ca 6 kg ha −1 ). Ridges covered 25% of the area, furrows 30 and 45% was undisturbed surfaces. Taking into account the proportion of each type of surface, values for the whole prepared clearcut area were 4,312, 34, 4, 18 and 14 kg ha −1 for biomass, N, P, K and Ca, respectively. Biomass and nutrient pools had not returned to uncut forest levels at the end of the 5-year study period. The results indicate that mosses and field layer vegetation respond differently to soil preparation, that the development of biomass on ridges, in furrows and on undisturbed surfaces proceeds at different rates, and that the biomass and nutrient uptake of ground vegetation remains below pre-site preparation levels for several years. However, ridges, which are known to be the most susceptible to leaching, revegetate rapidly.

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“…This emphasizes the idea that MSP itself is an efficient approach to limiting competition for resources (Pehl and Bailey, 1983;Ross and Walstad, 1986). As a result, removing plant competition where it has previously been reduced by MSP has much less impact on the development of target trees.…”

Section: Competition Controlmentioning

confidence: 97%

Juvenile growth of hybrid poplars on acidic boreal soil determined by environmental effects of soil preparation, vegetation control, and fertilization

Bilodeau‐Gauthier

Paré

Messier

et al. 2011

Forest Ecology and Management

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a b s t r a c tThe silviculture of hybrid poplars and other fast-growing tree species is a promising solution to reduce the pressure on natural forests while maintaining wood supplies to industries. However, hybrid poplars are very sensitive to competing vegetation and to inadequate soil conditions and fertility. Possible management tools include mechanical site preparation (MSP), vegetation control (VC), and fertilization. Experimental plantations of hybrid poplars (one clone, Populus balsamea × Populus maximowiczii) were established at eight formerly forested sites on acidic soil in the southern boreal forest of Quebec, Canada. The objective was to test the response of hybrid poplars to the interaction of several silvicultural tools, which has been rarely done. Four MSP treatments (in decreasing order of intensity: mounding, harrowing, heavy disk trenching, light disk trenching) and a control (unprepared) were all combined with four different frequencies of plant competition control by brushing (from never up to once a year). Fertilization with N or N + P was also tested in three selected MSP treatments. After five years, hybrid poplar tree growth among MSP treatments increased in the following order: unprepared < light disk trenching < heavy disk trenching < harrowing < mounding. MSP was also essential in favouring early tree survival, as illustrated by mortality rates of over 20% in unprepared plots and below 5% in all other MSP treatments. The effect of competition control on hybrid poplar growth was greatest in the less intensive MSP treatments, where competing vegetation was the most abundant. On the contrary, fertilization effect was significant only in the most intensive MSP (mounding). Moreover, neither fertilization nor VC could compensate for inadequate soil preparation. Of all the silvicultural treatments tested, mounding provided the best tree growth despite a nitrogen and carbon impoverished surface soil.

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Effects of site preparation on ponderosa pine (Pinusponderosa), associated vegetation, and soil properties in south central Oregon

Cited by 16 publications

References 0 publications

Glyphosate application in forest—ecological aspects

Glyphosate application in forest—ecological aspects

Development of ground vegetation biomass and nutrient pools in a clear-cut disc-plowed boreal forest

Juvenile growth of hybrid poplars on acidic boreal soil determined by environmental effects of soil preparation, vegetation control, and fertilization

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