Populations of plant-parasitic nematodes in an Iowa cornfield were studied along north- and west-facing toposequences. Samples were collected monthly during the growing season. The greatest biomass for Xiphinema americanum occurred at the footslope on the north face. Paratylenchus microdorus had its greatest biomass at the summit position, generally more in the west- than in the north-facing sl...

The 2020 Jiashi Mw 6.0 earthquake occurred at the Kepingtage fold-and-thrust belt in South Tianshan front, Northwestern China. ground shaking caused extensive co-seismic deformation of Xiker dam meizoseismal area. We obtained strata distribution characteristics foundation through drilling. Using laboratory and situ tests, particle size distribution, standard penetration, shear wave velocity eac...

Nutrient leaching from agricultural soils presents an economic loss for farmers and can degrade the quality of surrounding environment. Thus, leachates 18 in situ wick lysimeters, installed at 40 cm soil depth vineyard hilltop, backslope, footslope intra- inter-row area (SUPREHILL Critical Zone Observatory, Croatia) were collected monthly over two years analyzed major plant nutrient ions. Our o...

Use of electromagnetic induction (EMI) sensors along with geospatial modeling provide a better opportunity for understanding spatial distribution of soil properties and crop yields on a landscape level and to map site-specific management zones. The first objective of this research was to evaluate the relationship of crop yields, soil properties and apparent electrical conductivity (ECa) at diff...

Soil genesis, physico-chemical properties and tea yield were investigated along different hillslope positions in the major tea cultivation area of Iran, i.e. Lahijan, Gilan Province. Land suitability was also determined for the tea production in this hilly region. Four different slope positions i.e., summit, shoulder, backslope and toeslope were sampled on three slope aspects following the prof...

Agricultural practices often contribute to the transport of solutes into groundwater; thus, low-cost strategies that extract nutrients from groundwater are essential address water pollution. This study evaluated effects agroforestry (tree + grass; AB [cottonwood {Populus deltoides Bortr. ex Marsh.}]) and grass buffers (GB; [tall fescue Schedonorus phoenix (Scop.) Holub, Red clover {Trifolium pr...

Rolling hill style topography is a common feature of agricultural land throughout the United States. Topographic complexity causes subfield variation in soil resources such as water and nutrients, leading to mosaic high- low-productivity zones that can shift from one year next due weather. Stabilizing yields across these productivity using agroecological methods may improve use efficiency, prev...

This study was carried out on Kop Mountain, which is located at the intersection of Eastern Anatolia and Black Sea in Turkey. Forage samples were taken from semi-arid rangeland sites analyzed for status chemical composition according to altitude aspect. In addition, seasonal variation investigated by repeated analyzes 3 different periods. terms aspect, highest crude protein ratio (13.40%) occur...

Abstract Roadside vegetation provides a multitude of ecosystem services, including pollutant remediation, runoff reduction, wildlife habitat, and aesthetic scenery. Establishment permanent along paved roads after construction can be challenging, particularly within 1 m the pavement. Adverse soil conditions could one leading factors limiting roadside growth. In this study, we assessed physical c...

this paper presents a simplified approach to estimate the resultant force, which should be provided by a retention system, for the equilibrium of unstable slopes. the results were obtained with a developed algorithm, based on limit equilibrium analyses, that assumes a two-part wedge failure mechanism. design charts to obtain equivalent earth pressure coefficients are presented. based on the res...