نتایج جستجو برای: آزمون soil block
تعداد نتایج: 456144 فیلتر نتایج به سال:
Phosphorus Concentrations in Sequentially Fractionated Soil Samples as Affected by Digestion Methods
Sequential fractionation has helped improving our understanding of the lability and bioavailability of P in soil. Nevertheless, there have been no reports on how manipulation of the different fractions prior to analyses affects the total P (TP) concentrations measured. This study investigated the effects of sample digestion, filtration, and acidification on the TP concentrations determined by I...
Objective: Returning crop residue to the soil exerts favorable effects on physical and chemical properties of soil. In fact, the plant residues can affect soil conditions such as pH and important role in soil fertility and cycling of elements in the soil may have. In addition to the role of the organic matter from decomposition of crop residue in increasing the concentration of micronutrients i...
This work aims to compare the performance of new methods to estimate the Soil Moisture Content (SMC) of bare soils from their spectral signatures in the reflective domain (0.4-2.5 µm) in comparison with widely used spectral indices like Normalized Soil Moisture Index (NSMI) and Water Index SOIL (WISOIL). Indeed, these reference spectral indices use wavelengths located in the water vapour absorp...
Field experiment was carried out with five selected mustard cultivars during November 2007 to February 2008 under old alluvial soil in the Crop Research and seed Multiplication Farm of Burdwan University, Burdwan, West Bengal, India in randomized block design replicated thrice. Various growth parameters viz., length of shoot and root, number of primary branches per plant, length of siliquae, di...
Awareness of the effects of fire on various aspects of an ecosystem after the fire,is important for range management. Changes in soil physical and chemical propertiescaused by fire can be the cause of changes in the vegetation. In this study, effects of fire onphysical and chemical characteristics of soil were investigated. This research was carriedout in a randomized block design method in the...
Abstract The influence of block forms on the shear behaviour soil–rock mixtures with soft blocks (soft S–RMs) can be efficiently investigated by discrete element method (DEM) basis accurate 3D models accounting for breakage. This paper proposes a novel modelling approach, based spherical harmonics series, generation geometries different but same convexity and angularity. An already existing non...
Cover crops are essential in agricultural management and especially in organic farming for protecting the soil from erosion, competing with weeds, preventing evaporative losses and improving soil quality and fertility. The choice of cover crop species is crucial in achieving the highest level of weed suppression and soil fertility enhancement. Cover crop systems with rye or mixtures of legumes ...
Aim: The aim of the present study was to examine different forms sulphur fractions in post- harvest soil cabbage crop determine S status red sandy loam soil, Thondamuthur block, Coimbatore district.
 Study Design: design used Factorial randomized block with 20 treatments replicated thrice.
 Place and Duration Study: A field experiment carried out a farmer’s non-calcareous deficient wh...
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