نتایج جستجو برای: 10 cm depths paired and un

تعداد نتایج: 17100381  

ژورنال: علوم آب و خاک 1999
میرلوحی, آقافخر, حاج عباسی, محمدعلی , صدرارحامی, محمد,

A two-year study (1996-97) was conducted to verify tillage effects on several soil properties and corn yield. The soil (fine loamy, Thermic, typic Haplargids) was treated by conventional (CT) and no-till (NT) systems. Soil organic matter (OM), mean weight diameter (MWD), penetration resistance (Cl), bulk density (BD), total nitrogen (TN) and aggregate size distribution at depths of 0-20 and 20-...

میرلوحی, آقافخر, حاج عباسی, محمدعلی , صدرارحامی, محمد,

A two-year study (1996-97) was conducted to verify tillage effects on several soil properties and corn yield. The soil (fine loamy, Thermic, typic Haplargids) was treated by conventional (CT) and no-till (NT) systems. Soil organic matter (OM), mean weight diameter (MWD), penetration resistance (Cl), bulk density (BD), total nitrogen (TN) and aggregate size distribution at depths of 0-20 and 20-...

ژورنال: علوم آب و خاک 2019

Subsurface drip irrigation systems, compared to other irrigation systems (basin and furrow), enhance the delivery of water and nutrients directly into the root zone. The purposes of this study were to determine wetting front advancement in a subsurface drip irrigation and to compare the results with the HYDRUS 2D model simulation. In this study, the irrigation using T-Tape was carried out on a ...

2000
R. M. Zablotowicz M. A. Locke L. A. Gaston C. T. Bryson

Fluometuron (N,N-dimethyl-N0-[3-(tri ̄uoromethyl)phenyl]urea) is the most widely used soil applied herbicide in cotton (Gossypium hirsutum) production in the Southeastern United States. Thus, there is a need to understand the persistence of this herbicide under various crop management systems in regards to both herbicide ef®ciency and environmental fate. The effects of long-term no-tillage pract...

Journal: :Journal of vascular and interventional radiology : JVIR 2014
Meghan G Lubner Tim J Ziemlewicz J Louis Hinshaw Fred T Lee Lisa A Sampson Christopher L Brace

PURPOSE To characterize modified triaxial microwave antennas configured to produce short ablation zones. MATERIALS AND METHODS Fifty single-antenna and 27 paired-antenna hepatic ablations were performed in domestic swine (N = 11) with 17-gauge gas-cooled modified triaxial antennas powered at 65 W from a 2.45-GHz generator. Single-antenna ablations were performed at 2 (n = 16), 5 (n = 21), and...

تدین‌فر, سعید, جعفری, پیمان , جلالی, امیرهوشنگ,

A two-year study was conducted to determine the effect of three depths of furrow and three plant row spacing, on irrigation water efficiency, yield and yield components of watermelon (Crimson Sweet cultivar) using a strip split plot arranged in a randomized complete block design with three replications. Three depths of furrow (15, 35 and 55 cm) were considered as horizontal factor and three pla...

2017
Om Prakash Gurjar Radha Kishan Paliwal Surendra Prasad Mishra

The aim is to study the density, isodose depths, and doses at different points in slab-pinewood-slab (SPS) phantom, solid phantom SP34 (made up of polystyrene), and chest level of actual patient for developing heterogeneous chest phantom mimicking thoracic region of human body. A 6 MV photon beam of field size of 10 cm × 10 cm was directed perpendicular to the surface of computed tomography (CT...

Rangelands cover approximately 85% of Kenya’s land mass and is a major resource for livestock farming with a considerable potential to mitigate climate change, yet these lands are stressed differently by various management. Our study aimed at determining the influence of grazing management systems (rotational, continuous and ungrazed) on soil organic carbon stocks in Yoani ranch located in the ...

Journal: :Soil Biology & Biochemistry 2022

Grazing by livestock can affect plant biodiversity and topsoil functions. However, experimental evidence on whether these impacts are limited to the or penetrate into deep layers (via changes in soil environment resource locations) of is lacking, especially for microbial biomass diversity. Here, we used paired grazed ungrazed (fenced) plots at 10 locations across Mongolian Plateau investigate h...

ژورنال: علوم آب و خاک 2016
بانج شفیعی, شهرام, جعفری, علی‌اشرف, کاشی زنوزی, لیلا,

In this study the effect of temperature, evaporation or evapotranspiration, precipitation, hillside direction and altitudinal classes, texture and acidity of soil on organic carbon content in the depths of 15 and 45 cm were evaluated. Paired t-test results showed that there is a significant difference between measured parameters in two soil depths. After preparing required data and processing t...

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