Báo cáo lâm nghiệp: "phosphate fertilization on trace element nutrition pinaster grown in a sandy acid soil" pot

... Technical communication no. 52, CAB, p. 306 Effect of phosphate fertilization on trace element nutrition of Pinus pinaster grown in a sandy acid soil E. Saur lNRA, StationdAgronomie, ... several growth disturbances and malformations without pathological affec- tions have appeared in pines and particularly in 3 yr old pines (twisting of bra...

Ngày tải lên: 09/08/2014, 04:20

... evaluation of morphological parameters in one-year planting material prepared for out- planting onto research plots was done in the ac- credited laboratory Nursery Control according to Standard ... leaves, larger total leaf area and higher dry matter of leaves per 1 plant were de- termined in seedlings grown in the sun. The average area of one leaf was larger in seedlings grown...

Ngày tải lên: 07/08/2014, 10:21

... × canadensis and P. ni gra in fertilizing P. nigra females in the artificial species-mixed Belgian poplar stand. A paternity analysis also revealed non-random intra-specific mating patterns within ... focus on maintaining and expanding the remaining non-hybrid native populations. Reforestation programmes combined with habitat restoration may limit the potential risk of gene flow with cul...

Ngày tải lên: 07/08/2014, 16:20

... trial was designed as a two factor factorial with four soil preparation treatments as the first factor (mechanical terracing, manual terracing, manual terracing with the addition ... téc- nicas y repercusión en la mejora de la calidad del suelo. In: Soil Degradation and Rehabilitation in Me- diterranean Environmental Conditions (J Albaladejo, MA...

Ngày tải lên: 08/08/2014, 18:21

... I), only pedun- culate oak was considered when analysing the results. No interaction was found between fertilization and drainage, nor between fertilization and weeding. The ... Roundup® (isopropylamine salt of glyphosate; Monsanto Company) in 1 200 L of water. Finally, a comprehensive fertilization was car- ried out in 1982 on various...

Ngày tải lên: 08/08/2014, 18:21

... results indicated that for the given vegetation type of Changbai Mountain the C and Nmineralization rate, potential mineralizable C (C 0 ) and potential rate of initial C mineralization (C 0 k) all ... temperature is maintained at 20°C. For the given vegetation type of Changbai Mountain, soil C and N mineralization rate, potential mineralizable C (C 0 ) and potential rate of initial C mi...

Ngày tải lên: 07/08/2014, 10:21

... total area) cover- ing mainly the highlands Drahanská and Konická vrchovina as well as the Moravian Karst of Devo- nian origin and a part of the Adamovská vrchovina highland. As regards the ... present on April 9.  e end of early phloem formation is characterized by the beginning of longitudinal axial parenchyma (AP) formation. It was observed on May 14 in young trees. In the...

Ngày tải lên: 07/08/2014, 10:21

... P1 and P2 together, confirmed that “damage” was an explanatory factor which was much sig- nificant than the other variables and factors available. Thus overall, the damage factor had both a statistical ... significant. This intermediate damage level may include variable intensities of changes in leaf, apical meristem and axillary bud viability, which were not taken into account in our obse...

Ngày tải lên: 07/08/2014, 16:20

... phytotoxic effect on the young plants. This interaction was demonstrated in the laboratory by measuring the respiration of excised spruce roots. Using oxygen consumption as an indi- cator ... explained by numerous factors, including the rigor- ous climate, predation of seeds and attack by fungi. Among these causes, the under- growth vegetation may...

Ngày tải lên: 09/08/2014, 04:20

... site and stand-related hazards of bark beetle infestation in the High Tatra Mountains as an example for system application and verification. Forest Ecology and Management, 207: 99–107. SAUVARD ... state, with a real risk of a total for- est decline on large areas. is paper is aimed to present the spatio-temporal characteristics of this process during last 5 years in a mountai...

Ngày tải lên: 07/08/2014, 03:22