Effect Of Edaphic Factors Research Articles

Effect of edaphic factors on phenolic contents in the natural population of Ichnocarpus frutescens (L.) R.Br. collected from Central India and Eastern Ghats

Ichnocarpus frutescens, commonly known as “Black creepers” is distributed in diverse phytogeographical regions of India. In this study, we examined the significance of edaphic factors in the variation of phenolic contents of I. frutescens collected from different regions. Among the twenty-one germplasms, NBI-28 from Tamia (Madhya Pradesh) exhibited high levels of gallic acid (0.32%), caffeic acid (0.65%), vanillic acid (0.27%), vanillin (0.09%) and ferulic acid (0.038%). The highest concentrations of nitrogen, potassium and phosphorus were observed in NBI-29 (0.079%), NBI-27 (0.019%) and NBI-36 (0.004%) respectively. The highest values for electrical conductivity (E.C.), pH and organic carbon (O.C.) were observed in NBI-26 (0.317 ds/m), NBI-04 (7.6), and NBI-29 (11.59%), respectively. Organic carbon and phosphorus showed a significant correlation with ferulic acid (r = 0.54) and protocatechic acid (r = 0.62) respectively. Furthermore, samples differ significantly in terms of nitrogen, phosphorus, potassium, pH, organic carbon and electrical conductivity. This study suggest that, the productivity of secondary metabolites of I. frutescens were affected by various edaphic factors. However, the role of other environmental factors need to be investigated.

Effect of Edaphic Factors on the Phenotypic Characteristics of Cicer Arinetinum (Chickpea) Plant of Two Different Regions of the District Prayagraj (U.P) India

Effect of Edaphic Factors on the Phenotypic Characteristics of Cicer Arinetinum (Chickpea) Plant of Two Different Regions of the District Prayagraj (U.P) India

Effect of edaphic factors on the vegetation zonation in some littoral and inland salt marshes of Egypt

Abstract Shawky R., 2018: Effect of edaphic factors on vegetation zonation in some littoral and inland salt marshes of Egypt. - Botanica, 24(2): 202-210. The segregation of a few dominant plant species into distinctive zones is characteristic of salt marshes. Vegetation zonation was investigated in the littoral salt marshes (South Marsa Alam region) and the inland salt marshes (Wadi El-Natrun region) of Egypt. Twenty taxa belonging to 18 genera and 11 families were recorded and classified into two sets at the two studied sites and subdivided into four groups by TWINSPAN, according to a relevance value: group A) co-dominated by Juncus acutus and Juncus rigidus; B) - dominated by Aeluropus lagopoides; C, D) - Limonium axillare. The analysis of species diversity in the inland salt marshes as well as the Shannon and the Simpson indices showed the highest species richness compared to that in the littoral salt marshes. The soil of the inland salt marshes was characterized by high percentages of silt, clay, also the soluble anion SO4-2was the highest. While the most effective factor in the littoral salt marshes was EC, sand fractions, moisture content, soluble cations as Na+, Ca+2, soluble anions as Cl-, organic matter and CaCO3. The proximity matrix between the two types of salt marshes indicated that they were different, except for the stands of Juncus rigidus, the elucidation distance was the smallest and they were similar together.

Effects of Edaphic (Soil) Factors on Plant Distribution in Chameli Community Forest, Bhaktapur, Nepal

Horizontal (east, centre, west) and vertical (bottom, middle and top) distribution study of plants as well as the study of edaphic factors were done in 2016 in Chameli Community Forest hill. Soil samples were taken from bottom, middle and top areas of east, centre and west reasons of the hill. During this study, Schima wallichi and Rhododendron arboreum were found dominant species and had less effect of edaphic factors. Similarly climber plants like Smilax aspara, Smilax lancaefolia, Smilax ovalifolia and Dioscorea bulbifera were absent in west area of top region which might be due to low content of moisture, pH, and phosphorous. Scutellaria repens, Sida cordifolia, Solanum nigrum, Tripterospermum volubile, Carex baccans, Heteropogan contortus etc. were absent in west areas of middle region which might be due to the effect of high % of sand, phosphorous and moisture content and has low % of silt, potassium and pH. Herbs are more dominant in bottom, trees in middle and shrubs in top region. The east area of bottom, middle and top region had more diverse vegetation. The average of organic matter percentage, nitrogen, potassium and phosphorous content was maximum in middle hill which supports the highly diversified tree species and dense forest. Phosphorous showed the most effective factor on plant distribution. Therefore, for the proper growth, functioning and abundance of plant species, edaphic factors had a significant effect and play an important role on plant distribution.Int. J. Appl. Sci. Biotechnol. Vol 6(1): 27-37

The Effect of Edaphic Factors on the Similarity of Parasitic Nematodes in the Soil Sampled in Nurseries of Ornamental Trees and Shrubs

Abstract The largest faunistic similarity of nematodes was found in soils sampled in coniferous nurseries where arborvitae (Thuja occidentalis - Cupressaceae), spruces (Picea spp. - Pinaceae) and pines (Pinus spp. - Pi-naceae) were grown. In soil sampled from deciduous tree and shrub nurseries, similar species composition of parasitic nematodes was found in stands of oaks (Quercus spp. - Fagaceae), black locusts (Robiniapseudo-acacia - Fabaceae) and maples (Acer spp. - Sapindaceae). In soils, especially the light and medium, from stands of coniferous and deciduous trees and shrubs, Aphelenchus avenae was often isolated. Bitylenchus dubius occurred in both types of nurseries, particularly in light soils. The largest faunistic similarities between nematodes isolated from places of growth of coniferous and deciduous plants were recorded in soils of loamy sand and sandy loam. The most abundant nematode species and the greatest similarity in species of plant parasitic nematodes were observed in soils with neutral pH or slightly acidic. Aphelenchus avenae was found in soil samples collected from both coniferous and deciduous plants, with no relation to soil acidity.

Effect of edaphic factors on root colonization and spore population of arbuscular mycorrhizal fungi

Effect of edaphic factors on root colonization and spore population of arbuscular mycorrhizal fungi

Effect of Edaphic Factors on Technical Properties of Flax Fibre

Flax plants were studied at two old sites (Kafer El‐Sheikh and El‐Fayoum) and a new site (El‐Salhia). At the harvesting stage soil samples were collected and subjected to mechanical, physical and chemical analysis. The fibre yield, physical and chemical characteristics were studied and correlated with the major edaphic conditions of the old and new sites. The results indicate that the fibre yield and quality were quite high in the flax from the Kafer El‐Sheikh site because of suitable climatic conditions and high fertility of the soil. Soil build up of the old site at El‐Fayoum enhanced slightly high fibre strength and fineness, in spite of less fevourable climatic conditions compared to the El‐Salhia site. Low organic matter and availability of nutrients in addition to high calcium content were the main factors affecting the quantity and quality of the flax fibre in the new cultivated area at El‐Salhia.