scholarly journals Investigation of Wild Herbs Based on Three Different Communities

2018 ◽  
Vol 53 ◽  
pp. 03052
Author(s):  
Fang Luo ◽  
Fengluan Shao ◽  
Xinyu Liu ◽  
Shengxiu Li ◽  
Ye Liu ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Chenopodium Album ◽  
Robinia Pseudoacacia ◽  
Field Investigation ◽  
Pharbitis Nil ◽  
Setaria Viridis ◽  
In The Wild

Based on field investigation and statistical analysis, the characteristics of wild herbs in different communities are discussed in this paper. The results showed that there were 32 species and 30 genera of 14 families in the wild herbs of the three communities. Cynanchum chinense R.Br. and Setaria viridis (L.) Beauv are the three community common herbs. Pterocypsela indica (L.) Shih and Cirsium setosum are common to the Cerasus sp. community and Malus micromalus communit. Polygonum, Chenopodium album and Pharbitis nil (Linn.) Choisy are common to the Malus micromalus community and Robinia pseudoacacia L.community.

Exploration of the Strategies in Civil Engineering to the Safety Evaluation and Reinforcement Technique of Wood Structure of Ancient Architecture in Huizhou

2012 ◽  
Vol 568 ◽  
pp. 71-75
Author(s):  
Qiang Sun ◽  
Wen He
Keyword(s):  
Quality Improvement ◽  
Statistical Analysis ◽  
Civil Engineering ◽  
Safety Evaluation ◽  
Field Investigation ◽  
Wood Structure ◽  
Traditional Architecture ◽  
Existing Problems ◽  
Technical Status ◽  
Ancient Wood

According to the field investigation of Huizhou ancient wood structure and statistical analysis of related documents, this paper expounded the main technical status and existing problems of Huizhou ancient wood structure safety evaluation and reinforcement and reconstruction, and put forward the research content of Huizhou ancient wood structure safety evaluation and reinforcement and reconstruction countermeasures, discussed the safety evaluation and reinforcement renovation the feasibility of the method for Huizhou traditional architecture reconstruction and quality improvement to provide technical reference.

scholarly journals STATUS POPULASI BUAYA Crocolylus porosus DI DAERAH KAIMANA DAN TELUK ARGUNI IRIAN JAYA

1999 ◽  
Vol 4 (2) ◽  
pp. 51 ◽  
Author(s):  
Hellen Kurniati ◽  
Yunus Rumbarar ◽  
Mumpuni Mumpuni ◽  
Gono Semiadi
Keyword(s):  
Statistical Analysis ◽  
Population Status ◽  
Irian Jaya ◽  
Unknown Number ◽  
The Past ◽  
The People ◽  
In The Wild ◽  
The Mean ◽  
Mean Trend ◽  
Commercial Hunting

The people of Indonesia have historically used crocodiles for a variety of non-commercial purposes. In the past ten years, a commercial collection from the wild almost threatened the population status. As pressure on the commercial hunting continuous, the successful conservation of Indonesian crocodiles will depend on the constant monitoring in the wild. Irian Jaya is one of several islands in Indonesia which historically accommodate an unknown number of commercial crocodiles such as Crocolylus porosus. Althorough monitoring on the C. porosus status in Barusam Gasawi, Buruai Garawa, Kamabu rivers, and Suwiki lake located in Kaimana and Arguni Bay, Irian Jaya had been conducted since 1990 and continued in 1991, 1992, 1993, 1994, 1996, and 1998. The surveys techniques were conducted night count method and guided by a 1: 100.000 map and GPS. A statistical analysis was performed on SAS using proc regression and proc mean. A significant result has only been noted in Suwiki Lake, where was the magnitude of the mean trend in density was 109 percent.

The Critical Construction Techniques of Preventing Quality Defects of External Wall Insulation

2011 ◽  
Vol 105-107 ◽  
pp. 1011-1015
Author(s):  
Chen Bing Ouyang ◽  
Ying Chen
Keyword(s):  
Statistical Analysis ◽  
Energy Saving ◽  
Preventive Measures ◽  
Building Energy ◽  
Field Investigation ◽  
Literature Research ◽  
External Insulation ◽  
Construction Techniques ◽  
Building Energy Saving ◽  
Main Defect

Since China's enforcement of building energy saving standards, external insulation technology has been applied in a mount of buildings. However, four common defects of it, namely crack, shedding and hollow, leakage, frost and condensation, had gradually appeared. This study tries to find out the critical construction techniques of preventing these defects which are closely related to quality in order that engineers pay more attention to them during construction. Literature research and field investigation to engineers and technicians are adopted. Designed questionnaires, including 61 kinds of detailed defects causes and relevant preventive measures, are used in the survey. Through statistical analysis of survey data, the mesh, plastering mortar configuration, etc. 10 detailed causes are suggested as main defect reasons according to harm grade. Meanwhile, corresponding 15 highly effective construction technical countermeasures are put forward finally.

EFFECTS OF GREEN FOXTAIL AND LAMB’S-QUARTERS INTERFERENCE IN FIELD CORN

1980 ◽  
Vol 60 (4) ◽  
pp. 1419-1425 ◽  
Author(s):  
K. P. SIBUGA ◽  
J. D. BANDEEN
Keyword(s):  
Seed Size ◽  
Field Experiments ◽  
Chenopodium Album ◽  
Corn Yield ◽  
Setaria Viridis ◽  
Competitive Effects ◽  
Field Corn ◽  
Green Foxtail ◽  
Lamb’S Quarters

Field experiments were conducted to study the effects of full season interference of various densities of green foxtail (Setaria viridis (L) Beauv.) and lamb’s-quarters (Chenopodium album L.) on the yield of field corn. Green foxtail interference was studied at densities of 0, 29, 56, 89 and 129 plants/m2 in 1976 and 0, 20, 40, 62, 84 and 119 plants/m2 in 1977. Non-significant (P = 0.05) corn yield reductions were obtained at densities of 56 and 20 plants/m2 in 1976 and 1977, respectively. Increased green foxtail density reduced corn yields by 5.8–17.6% in 1976 and 5.6–16% in 1977. Lamb’s-quarters interference was tested at densities of 0, 46, 83, 112, 167 and 221 plants/m2 in 1976 and 0, 54, 109, 172, 208 and 277 plants/m2 in 1977. Corn yields were not reduced significantly at lamb’s-quarters densities of 46 and 109 plants/m2 in 1976 and 1977, respectively, compared to weed-free treatments. Yield reductions\ranged from 12.3–37.9% in 1976 and 6–58% in 1977. The competitive effects of green foxtail and lamb’s-quarters on corn yield differed mainly on the ability of the latter to reduce ear and seed size.

scholarly journals Allelopathic Effects of Extract Robinia pseudoacacia L. and Chenopodium album L. on Germination of Tomato (Solanum lycopersicum L.)

2021 ◽  
pp. 11-18
Author(s):  
Sanida Bektić ◽  
Samira Huseinović ◽  
Jasminka Husanović ◽  
Senad Memić
Keyword(s):  
Solanum Lycopersicum ◽  
Chenopodium Album ◽  
Robinia Pseudoacacia ◽  
Weed Species ◽  
Solanum Lycopersicum L ◽  
Allelopathic Effects ◽  
Robinia Pseudoacacia L ◽  
Ecologically Sustainable ◽  
Research Show ◽  
Made In

Allelopathy can have an important applicaiton in areas of agriculture, especially in integrated protection from weeds, by using of allelopathic crops in different ways. In this research allelopathic effects of invasive species acacia (Robinia pseudoacacia L.)  and white goosefood (Chenopodium album L.) are explored on germination of   tomato (Solanum lycopersicum L.). Water extracts of dry leaves of white goosefoot and acacia are prepared according tothe  method : Norsworthy (2003). Experiment has been made in controlled laboratory conditions. Results of this research show that acacia and white goosefood have negative allelopathy potential and they act inhibitory on germination of tomatoes. Research of allelopathy and allelopathic relationships of weed species and agricultural cultures represents a big challenge for those people who are working in food production, and at the same time can be an instrument of ecologically sustainable agriculture.

Evaluation of Anti-nutritional Compounds in Selected Wild Plants Consumed by Ruminants in Pasturelands

2020 ◽  
Vol 71 (8) ◽  
pp. 233-239
Author(s):  
Jawaher Alkahtani ◽  
Mohamed Soliman Elshikh ◽  
Ayesha Khan ◽  
Kafeel Ahmad ◽  
Zafar Iqbal Khan ◽  
...  
Keyword(s):  
Plant Species ◽  
Chenopodium Album ◽  
Wild Plants ◽  
Health Issues ◽  
Mentha Arvensis ◽  
Edible Plant ◽  
Plant Parts ◽  
Wide Range ◽  
In The Wild ◽  
Nutritional Compounds

The present study was designed to determine the anti-nutritional compounds in the wild plants of Soone valley Punjab, Pakistan. A wide range of anti-nutritional factors exists in the wild plants of this area which are consumed as forages by the ruminants. Few anti-nutritional compounds i.e. oxalate, phytate, saponins and tannins were analyzed during the course of study. Oxalate content ranged from 0.4467% to 0.6267%. The highest oxalate content was found in Chenopodium album and lowest oxalate content was available in Mentha arvensis. The content of phytate ranged from 3.8167% to 4.9767% in all wild forages. The maximum amount was observed in Buxus papillosa and minimum amount was found in Ahadota vasica. Saponins ranged from 2.2700% to 3.7833%. The percentage of tannins varies from 1.3167% to 1.6300% in all plant species. The optimum value of tannins was found in Adatoda vasica and low value of tannins was investigated in the Mentha arvensis among the investigated plant species. Overall, the maximum factors observed in Buxus papillosa and lowest in Mentha arvensis plants. The values estimated in the present study are below the mark as compared to the toxic levels. Nutritional and health issues are developed due to the large consumption of monotypic wild edible plant parts during one meal. However, anti-nutritional compounds related to respective risks are less with the use of traditional methods.

scholarly journals Differential susceptibility of agricultural weeds to ultraviolet-B radiation

2002 ◽  
Vol 82 (4) ◽  
pp. 789-796 ◽  
Author(s):  
N. H. Furness ◽  
M. K. Upadhyaya
Keyword(s):  
Leaf Area ◽  
Chenopodium Album ◽  
Amaranthus Retroflexus ◽  
Ultraviolet B ◽  
Setaria Viridis ◽  
Stellaria Media ◽  
Redroot Pigweed ◽  
Green Foxtail ◽  
Lamb’S Quarters ◽  
Polygonum Persicaria

Differential morphological sensitivity of weed species to ultraviolet-B (UV-B) radiation (290–320 nm) may alter competitive relationships among weeds and associated crop species as the level of this radiation changes. In order to determine relative sensitivity of common chickweed [Stellaria media (L.) Vill.], green foxtail (Setaria viridis L.), lady's-thumb (Polygonum persicaria L.), lamb's-quarters (Chenopodium album L.), redroot pigweed (Amaranthus retroflexus L.), and shepherd's-purse (Capsella bursa-pastoris L.) to this radiation, seedlings were grown under 0, 7, and 11 kJ m-2 d-1 of biologically effective UV-B radiation in a greenhouse for 6 wk. The influence of UV-B radiation on seedling growth and morphology was investigated. UV-B radiation reduced shoot height in green foxtail (by up to 41%), lamb's-quarters, and redroot pigweed, and increased tillering in green foxtail seedlings. Leaf area and leaf biomass in common chickweed, green foxtail, lamb's-quarters, and shepherd's-purse, and stalk biomass in common chickweed, green foxtail, lamb's-quarters, redroot pigweed and shepherd's-purse declined in response to UV-B radiation. In common chickweed, leaf area was reduced by 74% at 11 kJ m-2 d-1. Root biomass was reduced by UV-B radiation in all species (up to 68% at 11 kJ m-2 d-1 in common chickweed) except lady's-thumb. Specific leaf weight increased and leaf area ratio declined in response to UV-B radiation in common chickweed and shepherd's-purse. Exposure to UV-B radiation increased the leaf weight ratio in common chickweed. Shoot:root ratios increased in response to UV-B radiation in common chickweed and redroot pigweed. Scanning electron microscopy revealed collapsed epidermal cells in occasional necrotic regions on adaxial leaf surfaces of redroot pigweed grown under 11 kJ m-2 d-1 UV-B radiation. Morphology and growth of lady's-thumb were not affected by UV-B radiation. This study suggests that common agricultural weeds have differential morphological and growth responses to UV-B-enhanced environments. Sensitivity to UV-B radiation was greatest for common chickweed and least for lady's-thumb and redroot pigweed. Key words: ultraviolet-B, Amaranthus retroflexus, Capsella bursa-pastoris, Chenopodium album, Polygonum persicaria, Setaria viridis, Stellaria media

scholarly journals A Traditional Community in the Chao Phraya River Basin: Classification and Characteristics of a Waterfront Community Complex

2015 ◽  
Vol 8 (1) ◽  
pp. 57
Author(s):  
Patiphol Yodsurang ◽  
Miki Hiromi ◽  
Uekita Yasufumi
Keyword(s):  
Statistical Analysis ◽  
River Basin ◽  
Cultural Landscape ◽  
Cultural Landscapes ◽  
Principal Component ◽  
Field Investigation ◽  
Qualitative Assessment ◽  
Agricultural Activities ◽  
Data Set ◽  
Chao Phraya River

<p class="1Body">Traditional waterfront communities are extremely significant in understanding the role and influence of the daily lives of an indigenous amphibious culture and are considered to be a counterpart of the contemporary community that would have existed in the past. This study gives a systematic overview of the traditional waterfront community complex in the Chao Phraya River Basin to identify the phenomenology and salient features characterizing the waterfront community through the analysis of the following: 1) features of geography and waterbodies; 2) cultural landscapes and agricultural activities; 3) urban components; and 4) architectural features. A total of 138 traditional waterfront communities were selected using the purposive sampling method.</p> <p class="1Body">Quantitative data collection was conducted using field investigation to collect and evaluate the validity of properties in actual conditions. The data were analyzed using a statistical analysis program to examine the similarity and correlation of the data set. To identify characteristics, hierarchical clustering and decision-tree analysis were used to group similar communities together and classify the complexity of a traditional waterfront community. Principal component analysis was then used to detect the true association between the relevant variables. In addition, qualitative assessment of secondary document collection, legislation, previous and present public policies, research, and criticisms were used to support the argument for statistical analysis.</p> <p class="1Body">The results provided seven clusters based on common preferences consisting of a market town, paddy village, raft community, waterfront market, comprehensive estuarine agricultural village, orchard village, and fishing village. These clusters show diversity in the cultural landscape, with agricultural activities exerting influence on the community complex, creating both direct and indirect association, with several significant variables.</p>

Weed Control in Sugarbeets (Beta vulgaris) by Mixtures of Cycloate and Ethofumesate

Weed Science ◽  
1979 ◽  
Vol 27 (5) ◽  
pp. 516-519 ◽  
Author(s):  
E. E. Schweizer
Keyword(s):  
Beta Vulgaris ◽  
Soil Texture ◽  
Chenopodium Album ◽  
Field Studies ◽  
Amaranthus Retroflexus ◽  
Setaria Viridis ◽  
Kochia Scoparia ◽  
Common Lambsquarters ◽  
Green Foxtail ◽  
Herbicide Mixtures

Response of weeds and sugarbeets (Beta vulgaris L. ‘Mono Hy D2′) to preplanting treatments of mixtures of cycloate (S-ethyl N-ethylthiocyclohexanecarbamate) and ethofumesate [(±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate] was evaluated in five field studies. A mixture containing 1.7 kg/ha of each herbicide reduced the stand of common lambsquarters (Chenopodium album L.) 90%, green foxtail [Setaria viridis (L.) Beauv.] and yellow foxtail [Setaria lutescens (Weigel) Hubb.] 97 to 99%, kochia [Kochia scoparia (L.) Schrad.] 64 to 77%, and redroot pigweed (Amaranthus retroflexus L.) 82 to 99%. The response of weeds to preplanting applications of mixtures of cycloate and ethofumesate was independent of soil texture, whereas response of sugarbeets was dependent on soil texture. The herbicide mixtures significantly reduced the pre-thinning stand of sugarbeets and root and sucrose yields on two sandy loams, but not on a clay loam.

Natural durability of black locust (Robinia pseudoacaciaL.) wood grown in Wallonia, Belgium

2008 ◽  
Vol 38 (6) ◽  
pp. 1366-1372 ◽  
Author(s):  
Caroline Pollet ◽  
Benoit Jourez ◽  
Jacques Hébert
Keyword(s):  
Statistical Analysis ◽  
Standardized Test ◽  
Black Locust ◽  
Juvenile Wood ◽  
Robinia Pseudoacacia ◽  
Decay Resistance ◽  
Solid Wood ◽  
Tropical Species ◽  
Natural Durability ◽  
Growth Environment

The decay resistance of black locust ( Robinia pseudoacacia L.) heartwood was evaluated on standardized test specimens taken from mature and juvenile wood in 25 trees distributed over five sites in Wallonia, Belgium. The percentage mass losses caused by the wood-destroying fungi Coriolus versicolor CTB 863 A and Coniophora puteana BAM Ebw.15 were evaluated according to Cen/ts 15083-1 (Cen/ts 15083-1. 2005. Durability of wood and wood-based products — determination of the natural durability of solid wood against wood-destroying fungi, test methods — Part 1: Basidiomycetes. European Comm. for Standardization, Brussels). Black locust is classified as a “very durable” wood (class 1), while the juvenile heartwood (located near the pith) is classified in classes 1 to 2. The statistical analysis does not reveal any significant differences among the sites, suggesting that the growth environment of the trees has no effect on their natural durability. However, statistical analysis shows very highly significant differences among trees and between the two radial positions in the tree, with mature wood being more resistant than juvenile wood. Using such a naturally very durable species could reduce reliance on preservative treatment and the use of tropical species generally recommended for outdoor woodwork.

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