Correction: Fungi Isolated from Southern Forest Tree Nursery Soils

Mycologia ◽  
1962 ◽  
Vol 54 (6) ◽  
pp. 729
Keyword(s):  
2003 ◽  
Vol 27 (3) ◽  
pp. 176-179
Author(s):  
Stephen W. Fraedrich ◽  
L. David Dwinell ◽  
Michelle M. Cram

Abstract Nutsedge is a major weed problem in some southern forest tree nurseries. Although herbicides can control most weeds in nurseries, control of nutsedge is usually dependent on fumigation. The purpose of this study was to examine the effectiveness of broadcast applications of glyphosate for control of nutsedge. Single and multiple applications of glyphosate at 2.2 kg ai/ha greatly reduced the density of nutsedge shoots and viable tubers at a south Georgia forest tree nursery. The first application in June 1999 reduced nutsedge shoots by approximately 98%. Subsequent applications during September and October 1999 had no additional detectable effect. Although applications in August and September 2000 greatly reduced the amount of nutsedge in previously untreated areas, their effect did not appear to be as great as glyphosate applications during the first year. Rainfall before and after glyphosate applications, and plant age at the time of application may have influenced the level of nutsedge control in year two. Nutsedge shoots and viable tubers were reduced to near zero levels in plots treated over a 2 yr period. The use of broadcast applications of glyphosate may be of value in developing a more cost-effective management program for nutsedge control in southern forest tree nurseries. South. J. Appl. For. 27(3):176–179.


1989 ◽  
Vol 19 (5) ◽  
pp. 575-579
Author(s):  
Marcel Prévost ◽  
Jean Stein ◽  
André P. Plamondon

A soil water budget was established to estimate the water loss from the 0- to 60-cm layer as a result of evapotranspiration in a forest tree nursery. Estimated evapotranspiration totaled 69% of potential evapotranspiration (as estimated by the Penman equation) for 36 selected periods from May 15 to July 30, 1975. The root zone (0- to 15-cm layer) supplied 58% of the total evapotranspired water from the soil profile. Evapotranspiration from this layer was found to be a good predictor of total water loss. Evapotranspiration from the root zone, expressed as a percentage of potential evapotranspiration, was related to soil water tension at 3 cm depth. This relationship, combined with a knowledge of soil hydrodynamic properties, can be used to estimate evapotranspiration from the 0- to 60-cm soil profile, which in turn can be used to predict irrigation needs. For practical purposes, a relationship using net radiation instead of potential evapotranspiration can also be used. Depending on the available information, either of these two relationships may be used for irrigation planning.


1955 ◽  
Author(s):  
Karl. Lanquist ◽  
Keyword(s):  

1983 ◽  
Vol 59 (2) ◽  
pp. 70-73 ◽  
Author(s):  
J. Vlcek ◽  
D. King

Close range and airborne thermal studies were conducted to examine the near-surface soil water content – surface temperature relationship both quantitatively and qualitatively. A typical result showing the linear correlation between the diurnal surface soil/canopy temperature difference and soil water content at a depth of 5-7 cm for fields covered by seedlings in a forest tree nursery is presented. Interpretation of several thermal images reveals details of natural and artificial surface and subsurface drainage systems in a nursery that are not visible on the ground or on aerial photography. Thermal patterns related to irrigation systems, wind and forest canopies are also examined. Such information is useful in studying subsurface water migration and irrigation efficiency and is an aid to drainage system design and water management practices. Key Words: Thermal sensing, Tree nursery, Subsurface soil moisture, Thermal image interpretation, Artificial, natural draining, Irrigation.


Mycologia ◽  
1962 ◽  
Vol 54 (3) ◽  
pp. 221 ◽  
Author(s):  
Charles S. Hodges
Keyword(s):  

Author(s):  
Resti Meilani ◽  
Endang Koestati Sriharini Muntasib ◽  
Brigita Laura Fatria

<p><em>Sekolah Rimbawan Kecil</em> (<em>Serincil</em>, literally means School of Little Forester) is nonformal conservation education for the children of Muara Kampong, Cibunian Village, Pamijahan Subdistrict, which is located adjacent to area of Gunung Halimun Salak National Park (GHSNP). The community of the kampong, including parents of Serincil children, relied on GHSNP area for their livelihood. Therefore, conservation education was also important for them to reduce their dependence on GHSNP area, and thus optimizing their role in conservation activities. Evaluation showed that the most intensive implementation of optimization subjects by the community was the one most suitable with their everyday life (<em>dapur hidup</em>/vegetable farming), while quite intensive on cattle health, and less intensive on poultry farming. Forest tree nursery should be a main priority to establish intensive cooperation between the community and GHSNP management.</p><p> </p>


Nematology ◽  
1999 ◽  
Vol 1 (3) ◽  
pp. 261-266 ◽  
Author(s):  
Miguel Talavera ◽  
Juan Carlos Magunacelaya ◽  
Antonio Tobar

Abstract A nematological survey was carried out in a forest tree nursery in Andujar, southern Spain. Meloidogyne arenaria was found in soil and roots samples from Acacia sp., Biota sp., Juglans regia, Pinus spp., Salix babilonica and Sophora japonica. Pratylenchus vulnus was found in Acacia sp., Cupressus macrocarpa, Juglans regia, Ligustrum japonica, Morus sp., Pinus spp., Populus sp., Salix babilonica and Ulmus pumila. Helicotylenchus sp., Xiphinema americanum and Tylenchorhynchus sp. were found in all the plant species planted in the nursery. Paratylenchus sp., Criconemella sp. and Zygotylenchus guevarai host ranges are also given. The influence of soil storage on the recovery of M. arenaria was studied. At storage temperatures similar to those of the nursery (10-15°C), densities of M. arenaria in soil increased until the sixth week after sampling and were then maintained until the thirteenth week of storage. Incubation temperatures below 16°C during the migration of nematodes through a cottonwool filter, reduced the number of M. arenaria juveniles recovered after 15 h, but increasing migration time up to 39 h could counterbalance this reduction. Pflanzenparasitare Nematoden aus einer sudspanischen Forstbaumschulemit einigen Bemerkungen uber den Einfluss der Probenlagerung auf den quantitativen Nachweis von Meloidogyne arenaria - In einer Forstbaumschule in Andujar, Sudspanien, wurde eine nematologische Untersuchung durchgefuhrt. Meloidogyne arenaria wurde in Boden- und Wurzelproben von Acacia sp., Biota sp., Juglans regia, Pinus spp., Salix babilonica und Sophora japonica gefunden. Pratylenchus vulnus konnte an Acacia sp., Cupressus macrocarpa, Juglans regia, Ligustrum japonica, Morus sp., Pinus spp., Populus sp., Salix babilonica und Ulmus pumila nachgewiesen werden. Helicotylenchus sp., Xiphinema americanum und Tylenchorhynchus sp. wurden an allen Pflanzenarten gefunden, die in der Baumschule angebaut wurden. Ferner werden die Wirtspflanzen von Paratylenchus sp., Criconemella sp. und Zygotylenchus guevarai genannt. Dann wurde auch der Einfluss der Probelagerung auf den Nachweis von M. arenaria untersucht. Bei Lagerungstemperaturen von 10-15°C, die ahnlich waren wie die in der Baumschule, nahmen die Dichten von M. arenaria bis zur sechsten Woche nach der Probenahme zu und hielten sich dann bis zur 13. Woche der Lagerung. Temperaturen unter 16°C wahrend der Wanderung durch ein Baumwollwattefilter verminderten die Anzahl der nach 15h wiedergefundenen Juvenilen, doch konnte eine Verlangerung der Wanderzeit auf 39h diese Verminderung ausgleichen.


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