نتایج جستجو برای: 100 chemical fertilizer

تعداد نتایج: 786864  

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2011
meisam pourhadi

background & aim: nowadays, tendency to agricultural biotic product sustainable agriculture instead of chemical ‎fertilizers has been going up in all over the world. so, most pharmaceutical industries prefer to ‎use raw material which is produced from organic and stable system. producing organic ‎medicinal plants, such as peppermint, seems important in economical, ecological and ‎bio enviro...

2010
Ram Krishna Shrestha

Fertilizer is a vital input for agriculture production. With the growing popularity of modern agriculture, fertilizer consumption in Nepal has been increasing over the years. Since, Nepal does not produce any fertilizers, demand for fertilizers are being met through formal and informal imports. Over the years, fertilizer policy changes have been observed several times in a bid to satisfy farmer...

Journal: :مدیریت خاک و تولید پایدار 0
مریم روستایی دانشگاه شهرکرد سیف اله فلاح عضو هیات علمی دانشکده کشاورزی، دانشگاه شهرکرد

in order to effects of fertilizer source and intercropping ratios on macronutrients concentration and uptake of fenugreek and black cumin, a factorial experiment was conducted as randomized complete block design with three replications at shahrekord university research farm in 2013. sole cropping of fenugreek (f) and sole cropping of black cumin (b) and three intercropping ratios (f:b 2:1, f:b ...

2015
Vinay M. Bhandari Laxmi Gayatri Sorokhaibam Vivek V. Ranade

Wastewaters from chemical fertilizer industry mainly contain organics, alcohols, ammonia, nitrates, phosphorous, heavy metals such as cadmium and suspended solids. The nature of effluent streams varies in terms of its constituents and complexity. The present work attempts to fill the void in the literature that mostly reports synthetic wastewater treatment studies; by evaluating effluent treatm...

2012
Hanqin Tian Chaoqun Lu Jerry Melillo Wei Ren Yao Huang Xiaofeng Xu Mingliang Liu Chi Zhang Guangsheng Chen Shufen Pan Jiyuan Liu John Reilly John M. Reilly

Chemical nitrogen (N) fertilizer has long been used to help meet the increasing food demands in China, the top N fertilizer consumer in the world. Growing concerns have been raised on the impacts of N fertilizer uses on food security and climate change, which is lack of quantification. Here we use a carbon–nitrogen (C–N) coupled ecosystem model, to quantify the food benefit and climate conseque...

2014
Getachew Sime Jens B. Aune

This study examines the agronomic response, efficiency and profitability of fertilizer microdosing in maize. An experiment with the following treatments was conducted: control without fertilizer, microdosing treatments, with the rate of 27 + 27, 53 + 53 and 80 + 80 kg ha, and banding of fertilizer with 100 + 100 kg ha of di ammonium phosphate (DAP) + urea, applied at planting and jointing, resp...

Journal: Desert 2010
H. Ghadiri R. Naderi

Field experiment was conducted in 2008 at the Research Field of Agricultural College of Shiraz University, Shiraz, Iran to investigate the effects of urban waste compost (UWC), manure and chemical fertilizer on the initial growth of corn (Zea mays). Experimental design was split plot factorial with three replications. Main plots were assigned to nitrogen (N) fertilizer (0 and 200 kg N ha-1), an...

Journal: :The Science of the total environment 2009
Angela L Pérez Kim A Anderson

Cadmium is a common impurity in phosphatic fertilizers and may contribute to soil Cd accumulation. Changes in total and bioavailable Cd burdens to agricultural soils and the potential for plant Cd accumulation resulting from fertilizer input was investigated. Three year field studies were conducted using three dose levels of cadmium-rich, commercial, phosphate fertilizers applied at four agricu...

Journal: :Journal of environmental sciences 2007
Shu-Cai Zeng Bei-Guang Chen Cheng-Ai Jiang Qi-Tang Wu

Growing fruit trees on the slopes of rolling hills in South China was causing serious environmental problems because of heavy application of chemical fertilizers and soil erosion. Suitable sources of fertilizers and proper rates of applications were of key importance to both crop yields and environmental protection. In this article, the impact of four fertilizers, i.e., inorganic compound ferti...

ژورنال: علوم زراعی ایران 2022

Inclusion of cover crops in crop rotations has several benefits such as supplying nitrogen for the next crop. To investigate the effect of cover crops and different levels of nitrogen fertilizer on tuber yield, yield components, and different nitrogen efficiency indices of potato, a filed experiment was conducted as split plots arrangements in randomized complete block design with three replica...

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