نتایج جستجو برای: chemical sterilizing of soil

تعداد نتایج: 21206692  

Ebrahim Zeinali Elnaz Azizzadeh Ghorban Ali Roshani Seyed Ali Reza Movahedi Naeini

This study was carried out in order to evaluate the changes of Nitrogen, phosphor and potassium uptake by wheat and remaining of them in soil under foliar application of Leonardite and foliar application of N and K. The experiment was conducted in Gorgan University of Agricultural Sciences and Natural Resources during 2013- 2014. The experiment was laid out a using split-plot arrangement based ...

2000
S. H. Schoenholtz H. Van Miegroet J. A. Burger

Foresters have always relied on a knowledge of chemical and physical properties of soils to assess capacity of sites to support productive forests. Recently, the need for assessing soil properties has expanded because of growing public interest in determining consequences of management practices on the quality of soil relative to sustainability of forest ecosystem functions in addition to plant...

2009
R VAN ANTWERPEN

In many crop producing areas of the world there are reports of yield decline and loss of productive potential in soils. Little is known about the long term effects of sugarcane monocropping on changes in physical, chemical and biological properties of soils. The aim of this study was to quantify the physical and chemical condition of soils under sugarcane production in northern Kwazulu-Natal, a...

Journal: :اقتصاد و توسعه کشاورزی 0
مسعود حسین زاده محمد قربانی

abstract unbalance using of chemical fertilizers cause decline the soil quality and fertility, environmental pollution and specially soil and water resources pollution. the use of animal manure is a replacement to chemical fertilizers. therefore, recognizing of demographic, technical-extensional and agronomic affect on farmer's decision making process to use of animal manure will have important...

ژورنال: علوم آب و خاک 2009
ادهمی, ابراهیم, باقرنژاد, مجید, مولوی, رویا,

Fire is widely used to clear farms in Iran, while there is little information regarding the effects of fire on the characteristics, especially mineralogy of soils. The objectives of the present study were to 1) compare some physico-chemical properties of burned and unburned soils and 2) evaluate minerals transformation in top soil layer resulting from increasing temperature. Soil samples were t...

Journal: :مهندسی زراعی 0
اکرم احمدپور سفیدکوهی دانشجوی کارشناسی ارشد، دانشکده علوم زراعی، دانشگاه کشاورزی و منابع طبیعی ساری مهدی قاجار سپانلو دانشیار دانشکده علوم زراعی، دانشگاه کشاورزی و منابع طبیعی ساری محمدعلی بهمنیار دانشیار دانشکده علوم زراعی، دانشگاه کشاورزی و منابع طبیعی ساری

in order to investigate the effects of applying three and five continuous periods of municipal solid waste (msw) with and without npk chemical fertilizer on the amount of micronutrient uptake by different parts of wheat, a pot experiment was conducted in split plot based on randomized complete block design with four replications in 2009. the main plot was a six-fertilizers level including contr...

2002
Suzanne Prestrud Anderson William E. Dietrich George H Brimhall

In a headwater catchment in the Oregon Coast Range, we find that solid-phase mass losses due to chemical weathering are equivalent in the bedrock and the soil. However, the long-term rate of mass loss per unit volume of parent rock is greater in the soil than in the rock. We attribute this finding to the effects of biotic processes in the soil and to hydrologic conditions that maximize contact ...

2016
Ouola Traoré Korodjouma Ouattara François Lompo

In cotton and cereals production systems, the most important cause of soil fertility degradation is the inappropriate crop residues management. In a long-term experiment carried out from 1982 to 2012, the effects of crop residues management (CRM) during 30 years on soil chemical properties and crops yields were evaluated in a cotton-cereals rotation. The experimental design was nonrandomized bl...

Journal: :تحقیقات آب و خاک ایران 0
علیرضا راهب کارشناسی ارشد، دانشگاه تهران احمد حیدری استادیار، دانشگاه تهران

ponding of unsaturated soils and the final resulted redox conditions, cause different chemical and electrochemical changes. redox potential is one of the most effective factors in determination of chemical properties of ponded soils; as by influencing dissolution and sedimentation of minerals and the activity and uptake of soil nutrients. the study site with an extension area of area about 10 h...

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