Growth Performance Assessment of Chamaecyparis obtusa Stand in Gyeongnam Province, S. Korea
Moon Hyun Shik,
Kim Tae Woon,
Tamirat Solomon
Issue:
Volume 9, Issue 5, October 2020
Pages:
135-141
Received:
7 August 2020
Accepted:
19 August 2020
Published:
3 September 2020
Abstract: Growth causes in trees to change in volume (size) and shape or form. These changes can be positive or negative and it is the result of different factors either biotic or a biotic. A stand or individual trees have characteristic growth patterns and understanding the sources of change or factors that are influencing the growth is crucial for the productivity of forests. In this study the growth performance of Chamaecyparis obtusa (C. obtusa) was studied to assess the growth condition of young stand in the Gyeongnam province since the time of plantation. Historical tree growth was measured using standard forest growth evaluation (height and root collar diameter measurement) techniques to analyze increment from individual trees at seventy two sites in eight cities and counties. The relationship between soil properties, climate, altitude and aspect with tree growth was evaluated. The results of the study showed variation of growth pattern for the same species of similar age categories at different sites and the combined effects of climate, soil properties, altitude, aspect and management are the strongest drivers of changes in the growth. It was recommended to consider the above factors for further expansion of plantation of the species and apply periodic silvicultural treatments to the stands in order to facilitate the growth and wood quality.
Abstract: Growth causes in trees to change in volume (size) and shape or form. These changes can be positive or negative and it is the result of different factors either biotic or a biotic. A stand or individual trees have characteristic growth patterns and understanding the sources of change or factors that are influencing the growth is crucial for the prod...
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The Effect of Acacia tortilis and Balanites aegyptica Trees on Fodder Quality: The Case of Mieso District, West Hararghe, Oromia National Regional State, Ethiopia
Alemayehu Beyene,
Muktar Reshad
Issue:
Volume 9, Issue 5, October 2020
Pages:
142-147
Received:
20 September 2020
Accepted:
30 September 2020
Published:
14 October 2020
Abstract: Acacia tortilis and Balanites aegyptica trees are a multipurpose tree species that produces diverse socio- economic and ecological benefits. These trees are grown commonly on farm land in Mieso district but scientific information is not yet documented about their effect on fodder quality. Thus, this study was initiated to investigate the effect of these two tree species on leaf foliar macronutrients and proximate chemical concentrations for animal feed in Mieso District, Oromia, Ethiopia. Representative foliar samples from A. tortilis and B. aegyptica trees replicated four times were collected. From each sampled tree, fully matured and expanded green leaves in all compass directions from different crown positions were collected and evenly mixed to form 1 Kg of fresh leaves per sampled tree. The collected leaf samples were air dried. After air drying, the leaf samples were oven dried at 80°C till constant weight was achieved. Moreover, the leaf Dry Matter (DM), Crude Protein (CP), Crude Fibre (CF), Ether Extract (EE) and ash of the samples were determined. With the regard to leaf macronutrient, only leaf foliar nitrogen concentration was revealed significant variation between the two species whereas among the leaf proximate chemical composition %DM, %CP, %DCP and %CF were showed significant variation (<0.05) between the two species. Thus, A. tortilis and B. aegyptica trees have the potential to provide quality animal feed that contribute to the productivity of the livestock through the provision of their nutritive value of the fodder, and thus, retaining of this tree on farm land with proper management like pruning, pollarding, lopping and crown opening could able to contribute to the livelihood of the community through improving the productivity of livestock.
Abstract: Acacia tortilis and Balanites aegyptica trees are a multipurpose tree species that produces diverse socio- economic and ecological benefits. These trees are grown commonly on farm land in Mieso district but scientific information is not yet documented about their effect on fodder quality. Thus, this study was initiated to investigate the effect of ...
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Evaluation of Striga Suppression Effect Herbicides (Chlorsulfuron 75% WDG) on Sorghum ((Sorghum bicolor (L.) Moench) in Western Tigray, Ethiopia
Assefa Abadi Kebede,
Yirga Belay Kindeya,
Letemaryam Desta,
Zereabrk Geremedhin Tafere
Issue:
Volume 9, Issue 5, October 2020
Pages:
148-152
Received:
27 February 2020
Accepted:
12 March 2020
Published:
26 October 2020
Abstract: Striga is the major sorghum production constraints in western Tigray, Ethiopia. Three Striga sick plot locations (Rawyan, Adebay and Beaker Kebeles) were selected during 2019 main cropping season. The objective of the study was to evaluate the Striga suppression effect of Chlorsulfuron 75% WDG (Turkey and china) product herbicides on sorghum. The experiment was laid out in randomized complete block design (RCBD) with three replications and ten (10gram/hectare) Chlorsulfuron 75% WDG were diluted in water and applied three weeks after planting. Striga count at 60 days after planting, at harvesting and grain yield were recorded and analyzed using GenStat 18version. The treatments showed statistically significant difference (p<001) in Striga and grain yield. But, there was no significant variation between the tested herbicides. The highest Striga count (1602.3/plot) was recorded from control followed by china product (365/plot) and turkey (303.3). The highest mean Striga reduction (81.07%) was recorded from Turkey followed by china (77.22%). The highest Striga count was recorded in Adebay (1298.33) followed by Rawyan (631.33) and Beaker (345).17.98 quintal/hectare, 16.11 and 9.55 yield was recorded in Rawyan, beaker and Adebay respectively The highest grain yield 18.33 quintal/hectare was recorded from Turkey product which is 50.19% yield advantage, 16.48 quintal/hectare 44.6% yield advantage in china product while 9.13quintal/hectare from control. From the study result recommended that both the Turkey and china product herbicides will be promoted to further demonstration and popularization at farm level.
Abstract: Striga is the major sorghum production constraints in western Tigray, Ethiopia. Three Striga sick plot locations (Rawyan, Adebay and Beaker Kebeles) were selected during 2019 main cropping season. The objective of the study was to evaluate the Striga suppression effect of Chlorsulfuron 75% WDG (Turkey and china) product herbicides on sorghum. The e...
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