Emission of hydrogen sulfide by twigs of coniferes — acomparison of Norway spruce (Picea abies (L.) Karst.), Scotch pine (Pinus sylvestris L.) and Blue spruce (Picea pungens Engelm.)

1995 ◽  
Vol 168-169 (1) ◽  
pp. 421-423 ◽  
Author(s):  
Gerald Kindermann ◽  
Katja Hüve ◽  
Stefan Slovik ◽  
Herbert Lux ◽  
Heinz Rennenberg
Keyword(s):  
Hydrogen Sulfide ◽  
Picea Abies ◽  
Pinus Sylvestris ◽  
Norway Spruce ◽  
Scotch Pine ◽  
Blue Spruce ◽  
Picea Pungens

scholarly journals Attractiveness of Picea pungens to the bark beetle species Ips amitinus (Eichh.) and Pityogenes chalcographus (L.)

2013 ◽  
Vol 59 (No. 12) ◽  
pp. 493-502 ◽  
Author(s):  
E. Kula ◽  
R. Kajfosz ◽  
J. Polívka
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bark Beetle ◽  
The Sun ◽  
Beetle Species ◽  
Pityogenes Chalcographus ◽  
Blue Spruce ◽  
Picea Pungens

Only two cambioxylophagous species (Ips amitinus and Pityogenes chalcographus) were found on sections of Picea pungens and Picea abies that belong to economically important pests of Norway spruce. Representatives of the Isarthron sp. (Cerambycidae) were developed on the examined sections of both P. abies and P. pungens. The monitoring of attractiveness of the spruce species P. pungens and P. abies to cambioxylophages revealed that P. pungens was more intensively attacked by I. amitinus while P. chalcographus was more abundant on P. abies. Both bark beetle species preferred shaded parts of tree trunks, although their development was more successful on the sun-exposed side. On P. pungens, abundance of P. chalcographus decreased and abundance of I. amitinus increased with increasing trunk volume. Blue spruce was more attractive to Isarthron sp. compared to Norway spruce.

scholarly journals Studies on Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) needle cuticles

1989 ◽  
Vol 46 (Supplement) ◽  
pp. 553s-556s ◽  
Author(s):  
S. Huttunen ◽  
M. Turunen ◽  
J. Reinikainen
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Norway Spruce ◽  
Scots Pine

scholarly journals Bark Beetles,Pityogenes bidentatus, Orienting to Aggregation Pheromone Avoid Conifer Monoterpene Odors When Flying but Not When Walking

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
John A. Byers
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Aggregation Pheromone ◽  
Bark Beetles ◽  
Slow Rotation ◽  
Scotch Pine ◽  
Release Rates ◽  
Host Trees ◽  
Pheromone Components ◽  
Males And Females

Previous studies and data presented here suggest that odors from healthy host Scotch pine (Pinus sylvestris) and nonhost Norway spruce (Picea abies), as well as major monoterpenes of these trees at natural release rates, significantly reduce the attraction of flying bark beetles,Pityogenes bidentatus, of both sexes to their aggregation pheromone components grandisol andcis-verbenol in the field, as tested by slow rotation of trap pairs. In contrast,P. bidentatusmales and females walking in an open-arena olfactometer in the laboratory did not avoid monoterpene vapors at release rates spanning several orders of magnitude in combination with aggregation pheromone. The bark beetle may avoid monoterpenes when flying as a mechanism for avoiding nonhost species, vigorous and thus unsuitable host trees, as well as harmful resinous areas of hosts. Inhibition of this flight avoidance response in beetles after landing would allow them to initiate, or to find and enter, gallery holes with high monoterpene vapor concentrations in order to feed and reproduce.

scholarly journals Influence of biochar on coniferous species seeds germinating ability and seedlings growth in protected ground conditions

2017 ◽  
Author(s):  
А.С. Дурова ◽  
А.В. Жигунов
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Growth And Development ◽  
Fungal Infections ◽  
Fungal Disease ◽  
Larix Decidua ◽  
Maximum Effect ◽  
Control Group ◽  
Scotch Pine ◽  
Different Doses

Улучшение агрохимических, физико-химических и биологических показателей почвы в результате внесения в почву биоугля в качестве мелиоранта доказано множеством исследований. Наиболее эффективным при выращивании сельскохозяйственных культур оказалось применение мелиоранта в дозах от 1 до 30 т/га биоугля. Однако вопрос о влияния биоугля на рост сеянцев хвойных пород в условиях закрытого грунта на искусственных субстратах в научной литературе затронут не был. Целью исследования была оценка влияния различных доз биоугля на развитие грибных инфекций и рост однолетних сеянцев, выращиваемых на торфяных субстратах в условиях теплиц летнего типа. Объектами исследования были семена и однолетние сеянцы ели обыкновенной (Picea abies (L.), Karst.), сосны обыкновенной (Pínus sylvéstris L.) и лиственницы европейской (Larix decidua Mill.). Биоуголь вносился в торфяной субстрат, в дозах 5 и 10 т/га. Оценка влияния различных доз биоугля на рост и развитие сеянцев проводилась по показателям всхожести семян, отпада сеянцев, степени грибного поражения сеянцев и динамики роста сеянцев. Полученные данные говорят о различном влиянии биоугля на показатели роста и развития сеянцев различных хвойных пород в теплицах. Наибольшее положительное влияние внесение биоугля оказало на рост и развитие сеянцев лиственницы. Внесение как 5, так и 10 т/га биоугля дало достоверное (в 2 и 1,5 раза соответственно) увеличение всхожести, а также увеличение биометрических параметров сеянцев высоты и массы побега. В условиях закрытого грунта создаются наиболее благоприятные условия для роста и развития сеянцев. Однако эти же условия благоприятны и для развития грибных инфекционных заболеваний сеянцев. Следует отметить достоверное снижение отпада и уменьшение грибного поражения сеянцев при внесении биоугля в опытах со всеми испытываемыми хвойными породами. Максимальный эффект был получен в варианте с внесением 10 т/га биоугля при выращивании сеянцев лиственницы. Количество пораженных грибными заболеваниями растений снизилось с 60% в контроле до 41% в опыте. Improvement of agrochemical, physical-chemical and biological performance of soil due to introduction of biochar as ameliorant has been proved by a great number of researches. Biochar doses of 1 to 30 t/ha are considered most effective in farm production. However the effect of biochar application on germinating ability of coniferous seeds and seedlings growing on man-made substrate in greenhouses has not been considered in literature yet. The objective of this study was to estimate the effects of different doses of biochar on the development of fungal infections and growth of one-year seedlings in containers with peat substrate in summer greenhouses. The study was carried out with seeds and seedlings of Norway spruce (Picea abies (L.), Karst.), Scotch pine (Pínus sylvéstris L.) and European larch (Larix decidua Mill.). Biochar was added into peat substrate in doses of 5 and 10 t/h. The effect of different doses of biochar on growth and development of seedlings was estimated based on the germination index, seedlings fall value, extent of fungal disease development, and seedling growth dynamics. The results have shown that introduction of biocar produces different effects on growth rate and development of seedlings of different species. The highest positive effect was observed for growth and development of larch seedlings. Application of biochar in doses of 5 and 10 t/h resulted in significant 2- and 1.5-fold increase in germination, accordingly, and increment in biometric parameters (height and diameter) and mass of the seedlings. Greenhouses provide the most favorable conditions for growth of seedlings. However, the same conditions are favorable for the development of fungal infection as well. Application of biochar has decreased the fungal attack and, as a result, the fall of seedlings of all species. Application of biochar in the dose of 10 t/ha has produced the maximum effect on larch seedlings. The number of plants attacked by fungal disease has decreased from 60% in the control group without biochar to 41% in the experiment with biochar application.

Sign in / Sign up

Export Citation Format

Share Document