Báo cáo lâm nghiệp: "Effects of phosphate deficiency on photosynthesis and accumulation of starch and soluble sugars in 1-year-old seedlings of maritime pine (Pinus pinaster Ait)" doc
Báo cáo lâm nghiệp: "Effects of phosphate deficiency on photosynthesis and accumulation of starch and soluble sugars in 1-year-old seedlings of maritime pine (Pinus pinaster Ait)" doc
... Stomatal and mesophylllimitations of photosynthesis in phosphate deficientOriginal articleEffects of phosphate deficiency on photosynthesis and accumulation of starch and soluble ... discussed.MATERIALS AND METHODSPlant material and growth conditionsSeeds of maritime pine (P pinaster) (INRA-CE-MAGREF) were germinated on natural peat for1 month. After germination, 60 ... effects of phosphorus deficiency on carbon assimila-tion in forest tree species (Ericsson and In- gestad, 1988). In Australia, P fertilization of Pinus radiata increased stand...
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Báo cáo lâm nghiệp: "Effects of a calcium deficiency on stomatal conductance and photosynthetic activity of Quercus robur seedlings grown on nutrient solution" pdf
... in regulating theinflux of carbon dioxide and the loss of watervapour. Cytosolic-free Ca2+ is thought to beinvolved in signal transduction linking thevariations in ... drought-induceddecline processes and Ca deficiency maybe excluded. On the other hand, reducedstomatal conductance in light and decliningCO2 uptake lead to reductions in treegrowth. ... to 80% of controls.DISCUSSIONThe suppression of Ca2+ in the nutrient solu-tion resulted in a very significant decrease in Ca and Mg contents in the leaves of Quer-cus...
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Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps
... ČSNI 1993. (in Czech)Drainage (1973): Principles and applications. Part II – eo-ries of drainage and watershed runoff. Wageningen, Interna-tional Institute of Land Reclamation and Improvement. ... the runoff into components using the analysis of hydrograph by separation its recession limb and determining only the runoff con-stituents and their comparison also in the process of time. ... 307–313is considered as the amount of precipitation minus interception, in ltration, evaporation and storage losses (H 1988; K 1996).First, the effects of drainage treatment and stand growth...
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Báo cáo lâm nghiệp: "Effects of nitrogen on the selection of food by Phyllobius arborator (Herbst)" pot
... consumption of food in the creation of a fat body in females of Lochmaea caprae (L.) Differences of imagoes in the consumption of food in particular variants cannot be confronted with findings ... proportion in feeding according to sex could not be evaluated.CONCLUSIONe input of nitrogen into a plant through soil became evident by the increased content of nitrogen in birch leaves and ... Ecol-ogy and Management, 32: 1–38.JANSSON R.K., SMILOWITZ Z., 1985. In uence of nitrogen on population parameters of potato insects: abundance, population growth and within-plant distribution of...
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Báo cáo lâm nghiệp: "Effects of spruce, beech and mixed commercial stand on humus conditions of forest soils" pdf
... spruce stand (26.0) and in the organo-mineral horizon on the beech stand area. On the contrary, the highest value was found in the beech stand (27.3) in forest floor and in the spruce stand Ah ... another factor indicat-ing man-conditioned acidification of the soil profile. According to the classification of buffer zones, the spruce monoculture occurs predominantly in the aluminium zone, which ... cations fixed at exchange sites of organic colloids. e values of soil reaction and the C/N ratio from soil samples of a mixed stand are within the limits of the remaining two stands. Carbon and...
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Báo cáo lâm nghiệp: " Effects of ectomycorrhizal inoculation and the type of substrate on mycorrhization, growth and nutrition of containerised Pinus pinea L. seedlings produced in a commercial nursery" docx
... 2. Effect of inoculation and the type of substrate on the con-centration of nutrients in needles of containerised P. pinea seedlings. p/v = peat/vermiculite (1:1, v:v); p/pb = peat /pine bark ... seedlings were thinned to one per container.Inoculation treatments were performed with spores of the five fun-gal species plus non-inoculated control plants. One-month-old seedlings were inoculated ... and the concentration of Fe was unaffected (Figs. 2c, 2d and 2e).When substrates were compared, the concentration of K in nee-dles of seedlings was significantly higher in seedlings grownin...
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Báo cáo lâm nghiệp: " Effects of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate" potx
... compensation du sol1. INTRODUCTIONDifferent authors, [7, 11, 23] have underlined the importance of climatic conditions operating on the tree seedlings during thefirst year of planting on the land. ... thelack of water, especially during the summer months [3, 10, 19,29]. This is the reason why the introduction of seedlings linkedto the site preparation focused on concentrating runoff water on ... growth, and theonly correlation shown is that of the rainfall values in the springseason, there is no correlation between the growth of the rings and the rainfall in any other season or the...
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Báo cáo lâm nghiệp: " Effects of intensive versus no management strategies during an outbreak of the bark beetle Ips typographus (L.) (Col.: Curculionidae, Scolytinae) in the Tatra Mts. in Poland and Slovakia" ppsx
... outbreak on bothsides of the national border in relation to both natural conditions and pest management activities.2. MATERIALS AND METHODS2.1. Characteristics of selected site and stand conditionsThe ... may havebeen due in part to the change in protection strategy (increasinguse of pheromone trap barriers instead of intensive sanitary cut-ting).(4) In the areas with no control measures the ... generally offer favour-able conditions for bark beetle attacks: the most intensiveinfestations in Krušne hory (Czech Republic) occurred on S and SE slopes [16], and in Western Sudeten (Poland) – on...
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Báo cáo lâm nghiệp: "Effects of artificial damage on the branching pattern of Nothofagus dombeyi (Nothofagaceae)" ppsx
... Chaar H., Colin F., Leborgne G., Artificial defoliation, decapitation of the terminal bud, and removal of the apical tip of the shoot in ses-sile oak seedlings and consequences on subsequent ... portion, t.2: clipping of distal buds, t.3: clipping of distal leaves, t.4: clipping of brother shoots, t.5: stem girdling (girdling position indicated with an arrow). Lowerdrawings (offspring ... damage of N. dombeyi branching systems In N. dombeyi trees, like in many other tree species, thebranching system consisting of a parent shoot extended in oneyear and a cohort of offspring shoots...
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Báo cáo lâm nghiệp: "Effects of light intensity on the growth and energy balance of photosystem II electron transport in Quercus alba " potx
... haverevealed a lack of understanding of ecological and physiolog-ical processes involved in oak regeneration.Light is a critical factor affecting early survival and growth of tree seedlings under a ... lower in HS as opposedto seedlings grown under FL conditions.Figure 4 depicts the relationship between ETR and the driv-ing force of electron transport to the reduction of the redox state of ... quenching during photosynthesis and photoin-hibition of Ulva rotundata Blid., Planta 190 (1993) 97–106.[37] Park Y I., Chow W.S., Anderson J.M., The quantum yield of pho-toinactivation of photosystem...
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