Management and control of the invasive Prosopis juliflora tree species in Africa with a focus on Kenya

2022 ◽  
pp. 67-81
Author(s):  
Simon Choge ◽  
Purity Rima Mbaabu ◽  
Gabriel Mukuria Muturi
Keyword(s):  
Tree Species ◽  
Prosopis Juliflora ◽  
And Control

scholarly journals Particles Matters Accumulation and Anatomical Leaf Properties of Three Tree Species Growing in the Industrial Area in Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 23-32
Author(s):  
Al-Toukhy s Al-Toukhy s
Keyword(s):  
Saudi Arabia ◽  
Tree Species ◽  
Coal Ash ◽  
Industrial Area ◽  
Fuel Oil ◽  
Characteristic Matrix ◽  
Lawsonia Inermis ◽  
Cell Region ◽  
Leaf Properties ◽  
And Control

Particles matters accumulation and anatomical leaf properties of Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) trees growing in the industrial zone in Jeddah - Saudi Arabia and Hada Al-Shame area (control) was done. The leaf properties of all tree species growing in the industrial and control showed that each stoma had a raised edge over the guard cell region. The guard cells appeared more shrunken on the polluted leaves as compared with unpolluted leave. The results indicated that the most deposition particles on leaf surfaces of all tree species were: soot (C) and soil dust with characteristic matrix elements (Si, Al, Mg, Ca, K); fuel oil particles rich in Al, Si, Ca, and Pb; coal ash particles containing C, Al, Si, K, Ca, S; and Pb. As a result, leaves of those plant species may be used as bio-indicators for the assessment of particular matters in the industrial areas.

Estimation of stem and tree level biomass models for Prosopis juliflora/pallida applicable to multi-stemmed tree species

Trees ◽  
2013 ◽  
Vol 27 (4) ◽  
pp. 1061-1070 ◽  
Author(s):  
Emil Cienciala ◽  
Alex Centeio ◽  
Petr Blazek ◽  
Maria da Cruz Gomes Soares ◽  
Radek Russ
Keyword(s):  
Tree Species ◽  
Prosopis Juliflora ◽  
Tree Level ◽  
Biomass Models

The hydrological performance of Prosopis juliflora (Sw.) growth as an invasive alien tree species in the semiarid tropics of northeastern Brazil

2019 ◽  
Vol 21 (8) ◽  
pp. 2561-2575 ◽  
Author(s):  
Francisco de Carvalho Nogueira ◽  
Mariana Alves Pagotto ◽  
José Roberto Vieira Aragão ◽  
Fidel Alejandro Roig ◽  
Adauto de Souza Ribeiro ◽  
...  
Keyword(s):  
Tree Species ◽  
Prosopis Juliflora ◽  
Northeastern Brazil ◽  
Semiarid Tropics

Termite mounds may not be foraging hotspots for mega-herbivores in a nutrient-rich matrix

2013 ◽  
Vol 29 (6) ◽  
pp. 551-558 ◽  
Author(s):  
Justice Muvengwi ◽  
Monicah Mbiba ◽  
Tatenda Nyenda
Keyword(s):  
Statistical Analysis ◽  
Tree Species ◽  
Plant Biomass ◽  
Wiener Index ◽  
Tree Species Diversity ◽  
Termite Mounds ◽  
Mammalian Herbivores ◽  
Biomass Removal ◽  
Species Specific ◽  
And Control

Abstract:Our study investigated the influence of termitaria on vegetation utilization by elephants in Chewore North, Zimbabwe. Ten termite mounds and ten similar sized control plots were surveyed for soil nutrients, tree species diversity and plant biomass removal by elephants. Termite mounds had higher mean (± SE) concentrations of P, Ca, Mg and Na (0.15 ± 0.01, 48.8 ± 9.32, 5.78 ± 1.59 and 0.47 ± 0.12 meq per 100 g respectively) than control plots (0.05 ± 0.01, 3.33 ± 0.56, 1.53 ± 0.22 and 0.19 ± 0.02 meq per 100 g). However, Shannon Wiener index of tree diversity did not vary significantly between termite mounds (1.13 ± 0.280) and their control plots (0.827 ± 0.469). Contrary to most studies investigating patterns of vegetation utilization by large mammalian herbivores on termitaria, biomass removal was five times more on control plots than termite mounds. No difference in biomass removal was noted for Colophospermum mopane which had enough replicates for statistical analysis both on termite mounds and control plots. Our study negates the hypothesis that nutrient-rich soil patches will act as feeding hotspots for large mammalian herbivores. We concluded that vegetation utilization by elephants may be tree species specific, particularly in nutrient-rich environments.

scholarly journals Effect of Seed Size and Pretreatment Methods on Germination of Albizia lebbeck

ISRN Botany ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Edward Missanjo ◽  
Chikumbutso Maya ◽  
Dackious Kapira ◽  
Hannah Banda ◽  
Gift Kamanga-Thole
Keyword(s):  
Seed Size ◽  
Tree Species ◽  
Cold Water ◽  
Hot Water ◽  
Albizia Lebbeck ◽  
Hard Seed ◽  
Plant Parts ◽  
Seed Pretreatment ◽  
Multipurpose Tree Species ◽  
And Control

Albizia lebbeck is a multipurpose tree species prioritised for conservation in Malawi. The different plant parts are used in traditional medicine to treat different diseases. However, the seeds are dormant, and the tree species remain undomesticated. A study was conducted to evaluate the effect of seed size and presowing on the germination of Albizia lebbeck in a nursery. Seeds were grouped into four categories in regard to their length, small (≤0.5 cm), medium ( cm), large (≥0.8 cm), and mixture of small, medium, and large seeds. The seeds were subjected to five main seed pretreatment methods, namely, soaking in sulphuric acid for 2 minutes, nicking, soaking in hot water for 5 minutes, soaking in cold water for 24 hours, and control where seeds were sown without any treatment. The results indicate that combination of nicking and large seeds produced the highest (100%) germination. Hot water treatment was effective in large seeds producing 67.5% germination. The increased germination for mechanically scarified seeds through nicking suggests that seed dormancy in Albizia lebbeck is mainly due to its hard seed coat. Therefore, it is recommended to farmers to adopt use of nicking and large seeds, since it is safe and effective.

scholarly journals Effect of Phytohormones on rooting behaviour in air layers of Phoebe cooperiana, an economically important tree species of Arunachal Pradesh, India

2021 ◽  
pp. 192-196
Author(s):  
Jasmine Pabin ◽  
N. Lyngdoh ◽  
T. S. Mehra ◽  
M. Bishwapati Devi ◽  
Temin Payum
Keyword(s):  
Tree Species ◽  
Significant Variation ◽  
Seedling Production ◽  
Arunachal Pradesh ◽  
Root Parameters ◽  
Survival Percentage ◽  
Cheap Method ◽  
Air Layers ◽  
And Control

This study reports the response of air layers of Phoebe cooperiana (Common name: Tapil) to different concentrations of rooting hormones in mid hills of Arunachal Pradesh. Ten trees between the ages of 7 and 10 were selected at Boleng village of Siang district, Arunachal Pradesh, India for the experiment. Eight treatments comprising of IBA and NAA at concentrations of 1000ppm, 2000ppm and 3000ppm each, Rootex hormone for semi-hardwood and control were applied to a total of 240 layers during April 2020. After 60 days, rooting percentage, mean number of roots and length of the longest root were recorded. Significant variation (p<0.05) among treatments was observed for all root parameters. Among treatments, the highest rooting percentage and mean a number of roots were obtained in layers treated with NAA 3000ppm (80% and 21.33 respectively). The length of the longest root was the highest in layers treated with NBA 2000ppm (4.23cm). The highest survival percentage of layers two months after transplanting was observed in those treated with NAA 3000ppm (54.16%) and the least in control (23.07%). The technique offers an easy and cheap method of propagation for farmers as well as for government and private agencies to enhance seedling production of the species.

scholarly journals Enhancing Germination of Seeds of Cassia abbreviata and Senegalia nigrescens Using Pre-Sowing Seed Treatments in Botswana

2021 ◽  
Vol 9 (3) ◽  
pp. 179-187
Author(s):  
Melusi Rampart ◽  
Demel Teketay ◽  
Kamogelo Makgobota ◽  
Witness Mojeremane ◽  
Ronnie Mmolotsi ◽  
...  
Keyword(s):  
Tree Species ◽  
Germination Percentage ◽  
Medicinal Species ◽  
Medicinal Uses ◽  
Inadequate Knowledge ◽  
Significant Difference ◽  
Indigenous Tree Species ◽  
Central Regions ◽  
Sowing Seed ◽  
And Control

Cassia abbreviata and Senegalia nigrescens are indigenous trees found in North and Central regions of Botswana. However, inadequate knowledge of their silviculture and decline in population due to deforestation, expanding settlements, infrastructure and agriculture are major threats to most indigenous tree species in Botswana. Like many indigenous tree species, Cassia abbreviata and Senegalia nigrescens are slow-growing and are threatened by overexploitation for numerous uses. Because of the increased demand for medicinal uses, medicinal species such Cassia abbreviata are rapidly disappearing in many habitats and threatened to extinction. This study assessed the response of pre-sowing treatment methods on quiescency and germination of seeds of Cassia abbreviata and Senegalia nigrescens tree species found in semiarid Savanna Ecozone of Botswana. Pre-sowing treatment included immersion in 98% undiluted sulfuric acid (H2SO4) for 15, 30, 45 and 60 minutes, submergence in boiling water for one, two, three minutes and submerged in warm water for 24 hours, mechanical scarification of the seed coat and control. ANOVA showed that there is a highly significant difference (P < 0.0001) among the treatments of C. abbreviata in seed germination and no significant difference among the treatments of S. nigrescens. The highest germination percentage of C. abbreviata seeds was 81%, which was found from seeds immersed in H2SO4 for 30 minutes, while for S. nigrescens seeds, the highest germination percentage was 99%, which was found from seeds treated with mechanical scarification and those immersed in H2SO4 for 15 and 45 minutes. The objective of this study is to determine the effect of pretreatment methods on germination of C. abbreviata and S. nigrescens seeds. Based on these results, we recommend sulphuric acid and mechanical scarification as suitable seed pre-sowing treatments for enhancing the germination of C. abbreviata and S. nigrescens, respectively.

scholarly journals Selectivity of Herbicides to Native Tree Species in Brazil

2019 ◽  
Vol 37 ◽  
Author(s):  
L. OLIVEIRA ◽  
A.C. SILVA JR ◽  
C.G. GONÇALVES ◽  
M.R.R. PEREIRA ◽  
D. MARTINS
Keyword(s):  
Tree Species ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Initial Development ◽  
Randomized Design ◽  
Chlorimuron Ethyl ◽  
Native Tree Species ◽  
Trema Micrantha ◽  
And Control

ABSTRACT: Weeds are one of the main obstacles in the recovery of degraded areas. This research aimed to study the selectivity of herbicides on Trema micrantha (Jamaican nettletree), Schinus molle (Peruvian peppertree), and Apuleia leiocarpa (garapeira) seedlings. An experiment was installed in Junqueirópolis and another in Jaboticabal/SP, Brazil. The experimental design used was completely randomized design with four replications. Treatments consisted of clethodim + fenoxaprop-p-ethyl (50 + 50 g a.i. ha-1), sethoxydim (184 g a.i. ha-1), quizalofop-p-ethyl (75 g a.i. ha-1), nicosulfuron (50 g a.i. ha-1), fluazifop-p-butyl (125 g a.i. ha-1), fomesafen (225 g a.i. ha-1), haloxyfop-methyl (48 g a.i. ha-1), bentazon (720 g a.i. ha-1), chlorimuron-ethyl (15 g a.i. ha-1), and control without herbicide. The analyzed characteristics were stem diameter, plant height, and phytointoxication at 7, 14, 21, 28, 35, and 42 days after herbicide application (DAA), in addition to shootdry matter accumulation in seedlings at the end of the study. Nicosulfuron and chlorimuron-ethyl caused intoxication in all the studied tree species. In Jaboticabal, these herbicides impaired the initial growth of Jamaican nettletree seedlings, while no herbicide delayed its initial development in Junqueirópolis.A similar result was obtained regarding dry matter accumulation for garapeira in both cities. The herbicides clethodim + fenoxaprop-p-ethyl and sethoxydim decreased dry matter accumulation in Peruvian peppertree plants in Jaboticabal and Junqueirópolis, respectively, thus not being recommendedtheir use for these species.

Sign in / Sign up

Export Citation Format

Share Document