搜索结果: 16-30 共查到“农学 thinning”相关记录49条 . 查询时间(0.22 秒)
Development of target (crop) trees in beech (Fagus sylvatica L.) stand with delayed initial tending and managed by different thinning methods
European beech target (crop) trees different tending
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2015/4/24
We evaluated the research on silviculture-production in the last 45 years in a 105-year-old beech stand, not tended up to its stand age of 60 years. Four alternatives (tending regime) were studied for...
Growth characteristics of oak (Quercus petraea [Mattusch.] Liebl.) stand under different thinning regimes
oak Quercus petraea Mattusch Liebl. thinning promising trees target trees
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2015/4/14
In the paper, selected quantitative characteristics of 57-year-old oak pole stage stand were analysed on plots with different thinning regimes at its establishment. Six thinning treatments were perfor...
Aboveground biomass of substitute tree species stand with respect to thinning – European larch (Larix decidua Mill.)
aboveground biomass European larch Larix decidua Mill. Kruš né hory Mts substitute stands thinning
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2015/3/27
This study is focused on substitute European larch stands in the Krušné hory Mts. (northern part of the Czech Republic). Research was conducted within larch thinning experiment Kalek (780 m a.s.l...
Tergitol as a possible thinning agent for peach cv. Redhaven
Prunus persica blossom thinning ammonium thiosulfate Armothin Tergitol-TMN-6 metamitron
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2015/3/24
The effect of different blossom thinners ammonium thiosulfate (ATS) (1%, 2%), Armothin (1.5%), Tergitol-TMN-6 (0.5%, 1%), applied on peach cv. Redhaven at 50–60% full bloom was evaluated in thinning e...
Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna
arboricides chemical thinning Ips amitinus Kruš né hory Mts Picea pungens Scolytidae
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2015/3/19
Chemical thinning was applied in blue spruce (Picea pungens Engelm.) stands by the application of Roundup Klasik and Garlon 4 EC. The thinning efficacy of Garlon 4 EC was negligible, while that of Rou...
Thinning experiment in the spruce and beech mixed stands on the locality naturally dominated by beech ?growth, litter-fall and humus
thinning spruce beech
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2015/3/16
In 1997, long-term thinning experiment V歟te?in Southern Bohemia was established in the young 19-year-old mixed beech and spruce stand. Three variants (0.10 ha each) were investigated: 1 ?control unthi...
Influence of stand density, thinning and elevated CO2 on stem wood density of spruce
stand density stem wood density thinning
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2015/3/6
Stem wood density (SWD) of young Norway spruce trees (Picea abies [L.] Karst.) growing at ambient (A variant, 350 μmol(CO2)/mol) and elevated (E variant, A + 350 μmol(CO2)/mol) atmospheric CO2 concent...
Flower thinning of apple cultivar Braeburn using ammonium and potassium thiosulfate – Short communication
bearing potential phytotoxicity
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2015/3/4
Ammonium and potassium thiosulfate are used commercially or experimentally as flower thinners because they are
considered user, environment and consumer safe. The thinning trials were conducted in 2...
Development of young substitute larch (Larix decidua Mill.) stands after first thinning
substitute forest stands European larch
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2015/3/3
European larch (Larix decidua Mill.) is one of the most important tree species in substitute stands of the
Krušné hory Mts. (northern part of the Czech Republic). At present, young larch stands...
Algorithms and software solution of thinning models for SIBYLA growth simulator
tree growth models thinning engine thinning concepts forest modeling
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2015/2/6
The paper deals with a proposal for a thinning model for the growth simulator SIBYLA. The model is based on an analytical-causal modeling approach. Some partial theorems are tested on experimental dat...
Norway spruce thinning experiment Polom (Eastern Bohemia) after 22 years of observation
Norway spruce air pollution thinning health condition snow damage
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2015/2/2
Effects of thinning were studied in an air-polluted young stand of Norway spruce on Polom series in the Orlické hory Mts. (North-Eastern part of the Czech Republic) founded in 1980 in 15 years old spr...
Thinning experiments in Norway spruce stands after 40 years of investigation – 1st series
negative selection from below thinning Norway spruce
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2015/1/29
Forestry and Game Management Research Institute at Jíloviště-Strnady has created a new experimental base for thinning research since 1956. A total of 46 experimental series were founded in Norway...
The effect of spruce stand thinning on biological activity in soil
spruce stand density soil respiration catalase activity
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2015/1/28
The effect of thinning of young spruce stands by 500 trees/ha on biological activity in the soil profile was studied in the mountainous area of the Moravian-Silesian Beskids. The biological activity o...
Elimination of weed influence through fruit thinning and fertilisation in apple tree plantings
apples weeds weed control herbicides fertilisation fruit thinning yield loss
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2015/1/20
The objective of this research is to study the effect of two measures (fruit thinning and additional fertilisation – 222 kg calcium nitrate/hectare) compensating the negative influence of weeds (yield...
Effect of Defoliation and Fruit Thinning on Fruit Quality of ‘Crimson Seedless’ Grape
‘Crimson Seedless’ grape Vitis vinifera defoliation fruit thinning fruit quality
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2010/11/15
‘Crimson Seedless’ vines were treated with 5 defoliation managements: (1) leaf basal removal
(LBR), (2) leaf basal removal + hedging (LBR+H), (3) leaf basal removal + sterile shoot removal (SSR+LBR),...