نتایج جستجو برای: 30 cm soil depth with 15 mgkg n

تعداد نتایج: 9860036  

2015
Burkhard Wilske Jana A. Eccard Marcus Zistl-Schlingmann Maximilian Hohmann Annabel Methler Antje Herde Thilo Liesenjohann Michael Dannenmann Klaus Butterbach-Bahl Lutz Breuer

Bioturbation contributes to soil formation and ecosystem functioning. With respect to the active transport of matter by voles, bioturbation may be considered as a very dynamic process among those shaping soil formation and biogeochemistry. The present study aimed at characterizing and quantifying the effects of bioturbation by voles on soil water relations and carbon and nitrogen stocks. Biotur...

ژورنال: علوم آب و خاک 2016
جمشیدی , سجاد , فروهرفر, فریده , نوشادی, مسعود ,

Evaluation of pollutant transportation in soil is important from different environmental aspects such as soil and groundwater contamination. The purpose of this study is to measure 2, 4-D concentrations in a silty loam soil under two different treatments (normal and deficit irrigation) in a corn field and simulate the results using the PRZM-3 and LEACHP models. Total concentrations of 2, 4-D in...

Journal: :آب و خاک 0
شیرانی شیرانی حاج عباسی حاج عباسی افیونی افیونی همت همت

abstract methods of tillage and organic matter affect root growth and distribution and therefore nutrient uptake by plant and its growth. this study was performed consecutive two years. tillage treatments included disk harrowing + two disk harrowings as reduced tillage (15 cm plowing depth) and moldboard plowing + two disk harrowings as conventional tillage system (30 cm plowing depth). also, t...

Journal: :Tree physiology 2006
Edwin C Rowe Meine Van Noordwijk Didik Suprayogo Georg Cadisch

Trees in cropped fields may improve nitrogen (N) use efficiency by intercepting leached N, but crop yield will be reduced if the trees compete strongly with crops for N. Ideal trees for intercropping will take up N from deeper soil layers not accessed by the crop species. Spatiotemporal aspects of tree nitrogen capture niches were investigated within a hedgerow intercropping system by placing 1...

Journal: :Journal of nematology 2008
T A Wheeler D O Porter D Archer B G Mullinix

Plots naturally infested with Rotylenchulus reniformis were sampled in the spring of 2006 and 2007 at depths of 15 and 30 cm in the bed, furrow over the drip tape, and "dry" furrow, and at approximately 40 to 45 cm depth in the bed and dry furrow. Then, 1,3-dichloropropene (Telone EC) was injected into the subsurface drip irrigation at 46 kg a.i./ha, and 3 to 4 weeks later the plots were resamp...

2016
Bal Krishan Choudhary Koushik Majumdar B. K. Datta B. K. Choudhary

The regulatory functions of soil are getting attention among the scientists and Soil Organic Carbon (SOC) is an important indicator of soil health. The impact of differential use of land on SOC and other edaphic properties were analysed in three important Land use land cover (LULC) system of Tripura, northeast India. Soil cores were divided into four depth profiles (0 10, 10 30, 30 50 and 50 10...

Journal: :Agronomy 2023

Soil quality, nitrogen, and organic matter content are increasingly being researched due to their impact on the environment. We assessed effects of different soil management practices distribution accumulation carbon (SOC) in a durum wheat–faba bean rotation system cultivated Mediterranean-type area Southern Italy, over six years. The three levels disturbance—conventional tillage (CT), minimum ...

2015
Xian Xue Fei Peng Quangang You Manhou Xu Siyang Dong

Recent studies found that the largest uncertainties in the response of the terrestrial carbon cycle to climate change might come from changes in soil moisture under the elevation of temperature. Warming-induced change in soil moisture and its level of influence on terrestrial ecosystems are mostly determined by climate, soil, and vegetation type and their sensitivity to temperature and moisture...

ژورنال: علوم آب و خاک 2012
جهانگرد محمدی, , سید محسن حسینی, , سید محمد حجتی, , یحیی کوچ, ,

To investigate spatial variability of soil characteristics in the most valuble forest stands in the northern Iran using geostatistical approach, a twenty hectare area in Experimental Forest Station of Tarbiat Modares University was considered. Soil samples were taken from pits, mounds, canopy gaps, under single trees and closed canopy positions at 0 - 15, 15 - 30 and 30 - 45 cm depths using cor...

زینلی, ابراهیم, سلطانی, افشین, سلطانی, الیاس, قادری فر, فرشید, گالشی, سراله,

The aim of this study was to investigate and to quantify the effect of burial depth on seedling emergence of volunteer canola and wild mustard. Seeds were buried in 12 different depths (1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 30 cm) in 4 replications and seedling emergence was measured daily. Results indicated that emergence percentage of volunteer canola was around 98 % from 1 to 2.9 cm of burial...

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