scholarly journals Variability of seedling survival and growth of different black poplar (Populus nigra L.) clones in the floodplain conditions of the Great War Island

2021 ◽  
pp. 59-86
Author(s):  
Marina Nonic ◽  
Filip Maksimovic ◽  
Jovana Devetakovic ◽  
Ivona Kerkez-Jankovic ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Survival Rate ◽  
Seedling Survival ◽  
Growth Dynamics ◽  
Vegetation Period ◽  
Great War ◽  
High Survival ◽  
Mean Values ◽  
Black Poplar ◽  
The Great War ◽  
Flooding Period

Black poplar (Popuius nigra L.) belongs to endangered species of Serbia that grow in wetlands. This research was conducted on the Great War Island, which is located at the confluence of the Sava and Danube rivers, in Belgrade. This research aimed to determine the survival rate and growth dynamics of seedlings of different black poplar clones in the first year after planting in the flood conditions of the Great War Island. Recording of surviving seedlings and measurements of heights and diameters were performed in 2019, firstly in the spring (April IB, 2019), the second time during the summer (July IS, 2019), after the flooding period, and the third time in the autumn (October 4,2019), at the end of the vegetation period. The results of descriptive statistics, one-way analysis of variance (One-Way ANOVA), and cluster analysis are presented in this paper. Based on the obtained results, the highest survival rate after the flooding period was recorded in clone number 9 (85.70%), in which 78.60% of seedlings survived at the end of the vegetation period. It can be stated that the seedlings of black poplar clone number 9, based on a high survival rate, have the potential to be used for afforestation of wetlands, such as the Great War Island. However, the seedlings of this clone showed significantly lower values of measured heights and diameters, compared to the seedlings of most clones and mostly the seedlings were damaged. On the other hand, seedlings of clone 3 were superior based on the mean values of heights and diameters, obtained after the measurements in all three periods, including the period after flooding. Seedlings of this clone had a satisfactory survival rate, but it was constantly declining. Clone number 1 showed the lowest results, both in terms of survival at the end of the vegetation period and in terms of mean heights and diameters of seedlings. When using this species, special attention should be paid to preserving the gene pool and avoiding the establishment of commercial monoclonal plantations, especially in protected areas such as the Landscape of Outstanding Features "Great War Island".

scholarly journals Mulching and Irrigation Practices on Cocoa Seedling Survival and Field Establishment

2020 ◽  
pp. 126-132
Author(s):  
M. M. Akpalu ◽  
G. K. Ofosu-Budu ◽  
F. K. Kumaga ◽  
K. Ofori ◽  
E. Oppong-Danso
Keyword(s):  
Soil Moisture ◽  
Survival Rate ◽  
Seedling Survival ◽  
Maximum Yield ◽  
High Survival ◽  
Growing Media ◽  
Main Plot ◽  
Cocoa Pod Husk ◽  
Establishment Phase ◽  
Cocoa Seedlings

Irrigation experiments of cocoa tend to concentrate on yield of matured cocoa trees compared to field establishment of young seedlings. Seedling survival leading to optimum population density are fundamental to obtaining maximum yield of crops. The aim of this experiment was to determine the effect of mulching and irrigation on survival of hybrid cocoa clone raised in three different growing media during the establishment phase. The experimental design was a 2 x 2 x 3 factorial arranged in a split-split plot design, with irrigation as the main plot factor, mulching as the subplot factor and growing media as the sub-sub plot factor with three replications. Cocoa pod husk (CPH) was used as the mulching material and each plant received 5kg at a rate of 5.6 t/ha. Irrigation was done daily by applying 4L of water except when it rains. Data was collected on soil moisture, plant height, leaf number, stem girth and plant survival. Results indicated that irrigation and mulching significantly (P<0.01) enhanced soil moisture. Cocoa seedlings raised in topsoil, mulched and irrigated significantly (P<0.05) increased survival rate (94.5%) compared to seedlings raised in soil without irrigation and no mulching (47.1%). Similarly, the survival rate of seedlings raised in growing media M2, mulched and irrigated (93.0%) was significantly (P<0.05) higher than similar seedlings without irrigation (73.4%). However, the survival rate of seedlings raised in M3 without mulching but irrigated was significantly (<0.05) higher 92.1% compared to seedlings raised in M3 mulched and irrigated 67.1%. Irrigation is very important in ensuring high survival rate during early field establishment. Mulching with cocoa pod husk without irrigation did not improve cocoa seedling survival.

The Great War in History

2020 ◽  
Author(s):  
Jay Winter ◽  
Antoine Prost
Keyword(s):  
Great War ◽  
The Great War

The Psychology of the Great War.

1917 ◽  
Vol 14 (11) ◽  
pp. 397-397
Author(s):  
Charles A. Ellwood
Keyword(s):  
Great War ◽  
The Great War

Review of A school history of the Great War.

1919 ◽  
Vol 10 (3) ◽  
pp. 176-176
Author(s):  
No authorship indicated
Keyword(s):  
Great War ◽  
School History ◽  
History Of ◽  
The Great War

Women and the Great War

2010 ◽  
Author(s):  
Allison Scardino Belzer
Keyword(s):  
Great War ◽  
The Great War

A New History for a New Channel: The Great War and the Launch of BBC2

2017 ◽  
Vol 14 (3) ◽  
pp. 283-297 ◽  
Author(s):  
Taylor Downing
Keyword(s):  
First World War ◽  
Great War ◽  
World War ◽  
Front Line ◽  
Television History ◽  
The First World War ◽  
The Great War ◽  
First World ◽  
Intense Debate ◽  
Do So

This article considers the making of the BBC2 series, The Great War, and examines issues around the treatment and presentation of the First World War on television, the reception of the series in 1964 and its impact on the making of television history over the last fifty years. The Great War combined archive film with interviews from front-line soldiers, nurses and war workers, giving a totally new feel to the depiction of history on television. Many aspects of The Great War were controversial and raised intense debate at the time and have continued to do so ever since.

Sign in / Sign up

Export Citation Format

Share Document