Báo cáo lâm nghiệp: "Interactions of ozone and pathogens on the surface structure of Norway spruce needle" potx

... sterilizing. The effect of the ozone fumigation and fungal infection on the epicuticular wax structure seemed to be additive. Ozone is known to affect the host- pathogen relationships ... conifers to fungal pathogens is also an important point with regard to stress factors. Interactions of ozone and pathogens on the surface structu...

Ngày tải lên: 09/08/2014, 04:20

... N and P concentration by 17 and 30% but decreased N and P content by 36 and 30%, respectively (Figs. 2 and 4B). Antagonistic interaction of K (shift F, Fig. 4B) occurred when a decline in K concentration ... supplementation can be used to correct K dilution [5, 49]. 3.4. Improving diagnostic precision Interpretations of plant response to fertilization are often based on plan...

Ngày tải lên: 08/08/2014, 00:22

... region of Bohemian-Moravian Upland or in a mu- tual comparison between the two regions (see stand situation 5, mutual comparison of stand situation 2 and 3, mutual comparison of stand situation ... results). e index of surfaces is calculated as the ratio of the surface of cross sections of all horizontal skeleton roots grow- ing in the positive geotropic directi...

Ngày tải lên: 07/08/2014, 04:20

... Un- certainties of future conditions in the year 2075, i.e. the changes in yield proportions due to fluctuations of prices and costs, as well as the expected shift of production conditions due to ... deficiencies in the informa- tion caused by a high level of uncertainty of natural, economic and social conditions during the long for- est production cycle. If the info...

Ngày tải lên: 07/08/2014, 10:21

... exhibiting the lowest starch content at the end of the season 2003. These observations il- lustrate the one-year delay in the impact of drought via the amount of carbohydrate reserve on the crown ... development the first year and extension of organs within the bud during the second year. Drought during the year of bud formation de- creases the number of...

Ngày tải lên: 07/08/2014, 16:20

... epicotyl elongation, (3) formation of axillary buds, (4) elongation of axillary long shoots, (5) formation of secondary axillary long shoots, (6) occurrence of dwarf shoots, (7) formation of a terminal ... elongation, (3) for formation of axillary buds, (4) for elon- gation of axillary long shoots, (5) for formation of secondary axillary long shoots, (6) for occurrence of dw...

Ngày tải lên: 07/08/2014, 16:20

... find a compromise between the dimension of the knotty core and costs of planting and artificial pruning, the rotation period, and the diameter goal at the end of the rotation period. Schultz [30] ... the target diameter is reached. The assumption of a constant radial increment facilitates the demonstration of the potential and applicability of the mod...

Ngày tải lên: 08/08/2014, 00:21

... underlined the depend- ence of LAI on the considered structural traits of the stands. In particular the correlations pointed out the increase of LAI with the increase of DBH, BA, SHOd and DH, until ... to natural evolution of stand structure. It beyond the juvenile phase showed discontinuity and gaps, according to the results of Cutini [13]; this is owed to...

Ngày tải lên: 08/08/2014, 00:22

... in the other periods of the year, and even did not recover in the case of crown pro- jection (Fig. 3). Concerning the comparison between Q. ilex and Q. cerrioides, RGR of number of resprouts and ... response to browsing of Q. ilex and Q. cerrioides will differ depending on the season of the year when browsing occurs. To test the first hypothesis, we undertook...

Ngày tải lên: 08/08/2014, 00:22

... ∆t)(7) where I(p) is the indicator function of proposition p (= 1 if p is true and 0 otherwise) and t logging the time of the last logging operation. Linear relations between ∆m si and the cumulative ... logging on the dynamics of the three groups of species was assessed by computing the proportion of each species group for different cutting cycles. The prop...

Ngày tải lên: 08/08/2014, 01:21