the studies carried out over 2010-13 involved a static field experiment initiated in 1999 at brody research station of the poznan university of life science, poland. the soil tillage systems for winter wheat were compared on a soil classified as albic luvisols. the aim of experiments was to evaluate impact of ploughless soil tillage on some soil physical, chemical, biological properties and win...

Aim of this work is looking for a correlation between footprint and soil penetration volume of treads in agricultural tires. Three tyres of different dimensions, fitted on the same tractor with different pressures and loads (N=not ballasted; Z=ballasted) were tested for defining the area of the single footprint shape (SF and SaF), of the multiple footprint shape (MF) and the volume of tyre in s...

This study was conducted to examine infectivity (penetration and gall and egg-mass formations) of the root-knot nematodes, Meloidogyne incognita and M. hapla, on carrots grown in soil conditions of 5 different soil textures consisting of bed-soil (b) and sand (s) mixtures (b-s mixtures) at the ratios of 10:0, 7:3, 5:5, 3:7, and 0:10. For M. incognita, the nematode penetration rates in b-s of 0:...

ters to characterize both agricultural and rangeland A DYNAMIC CONE PENETROMETER soils, however, has been limited by concerns about (i) FOR MEASURING SOIL instrument cost, (ii) measurement repeatability, (iii) limited ranges of soil resistance that can be measured by PENETRATION RESISTANCE a single penetrometer, and (iv) difficulties in comparing Jeffrey E. Herrick* and Tim L. Jones data collec...

Substrate type is a key-factor in nest-site selection and nest architecture of burrowing birds. However, little is known about which factors drive nest-site selection for these species, especially in the tropics. We studied the influence of soil attributes on nest-site selection by the campo miner Geositta poeciloptera, an open grassland bird that builds its nests within soil cavities. For all ...

This study focuses on utilizing cone penetrometer models to determine strength (resistance) of sandy soil and also assessment how the relative density angle friction effects measured penetration resistance in soil. Simple empirical equations are used components such as sleeve tip resistance. comparison is performed between calculated well agreement noticed them.

Abstract Replacement of bare fallow in rotations by cover crops is a promising tool to reduce crusting, although the interactions with soil moisture and effect crop species are still not well understood. The objective this work was determine how modify surface response penetration their relation water content. Two winter crops, barley (Hordeum vulgare L.) vetch (Vicia sp. L.), were compared tre...

ABSTRACT Soils are highly variable across landscapes, which can be assessed and characterized according to scale, as well fractal multifractal concepts of scale. Thus, the objective this study was analyze multifractality penetration resistance (PR) vertical profiles from different slope forms (concave convex). The experimental plot incorporated 44.75 ha, PR measured at 70 sampling points in 0-0...

Soil compaction is one of the most harmful elements affecting soil structure, limiting plant growth and agricultural productivity. It crucial to assess degree penetration resistance discover solutions consequences compaction. In order obtain appropriate value, using cone requires time labor-intensive measurements. Currently, satellite technologies, electronic measurement control systems, comput...