نتایج جستجو برای: n fertilizers

تعداد نتایج: 986920  

2016
Muslima Nazir Renu Pandey Tariq O. Siddiqi Mohamed M. Ibrahim Mohammad I. Qureshi Gerard Abraham Krishnapriya Vengavasi Altaf Ahmad

Nitrogen (N) is essential for proper plant growth and its application has proven to be critical for agricultural produce. However, for unavoidable economic and environmental problems associated with excessive use of N-fertilizers, it is an urgent demand to manage application of fertilizers. Improving the N-use efficiency (NUE) of crop plants to sustain productivity even at low N levels is the p...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2003
J Lienert M Haller A Berner M Stauffacher T A Larsen

We studied acceptance of a urine-based fertilizer product using a mail survey of 467 Swiss farmers. We distinguished among four production types: organic or IP farming, and with or without vegetable production. Considering that the idea of urine-based fertilizers is new, acceptance among the answering farmers was surprisingly high, with 57% explicitly stating that they thought it was a good or ...

2015

This study was carried out during 2004 and 2005 seasons on eight years old Arabi pomegranate trees grown in sandy soil to investigate the influence of microbial biofertilization on tree growth, yield, fruit quality and leaf minerals content. Microbial inoculum (Azotobacter spp. Azospirillum spp. and Bacillus megatherium which found in (Biogein, Nitrobine, phosphorein), in addition, arbuscular m...

2012
Rosana Cristina Pereira Karina Guimarães Ribeiro Rodrigo Duarte de Andrade Janaina de Lima Silva Enilson de Barros Silva Dilermando Miranda da Fonseca Paulo Roberto Cecon Odilon Gomes Pereira

The objective of this study was to assess the effect of applying N and K2O at different times after harvest on the structure and production characteristics of Marandu and Xaraés cultivars of Brachiaria brizantha. Two greenhouse 4 × 2 factorial experiments using a randomized block design with eight treatments and four replicates were carried out. In experiment 1, the plants in pots were fertiliz...

Journal: :Tree physiology 2010
E Baldi M Toselli D M Eissenstat B Marangoni

We evaluated the effects of mineral and organic fertilizers on peach root dynamics in the growing season from 2003 to 2006 in a nectarine (Prunus persica L.) orchard, planted in 2001 and located in the Po valley, northeastern Italy. Very few studies have conducted long-term investigations of root dynamics of fruit crops. Our main objective was to determine whether organic fertilizers affect roo...

2014
Zhen Zhen Haitao Liu Na Wang Liyue Guo Jie Meng Na Ding Guanglei Wu Gaoming Jiang Wen-Xiong Lin

The long-term application of excessive chemical fertilizers has resulted in the degeneration of soil quality parameters such as soil microbial biomass, communities, and nutrient content, which in turn affects crop health, productivity, and soil sustainable productivity. The objective of this study was to develop a rapid and efficient solution for rehabilitating degraded cropland soils by precis...

2014
ARTI GUPTA

Agrochemical is evolved by the contraction and combination of words agricultural and chemical, and is a generic term used for the various chemical products typically used in agriculture. Agrochemicals essentially help in intensifying crop production and to reduce the effects of pests and parasites on farm animals. Agrochemical basically refers to the broad range of pesticides and fertilizers. A...

Journal: :Journal of environmental quality 2004
Karl Guillard Kelly L Kopp

Various N fertilizer sources are available for lawn turf. Few field studies, however, have determined the losses of nitrate (NO(3)-N) from lawns receiving different formulations of N fertilizers. The objectives of this study were to determine the differences in NO(3)-N leaching losses among various N fertilizer sources and to ascertain when losses were most likely to occur. The field experiment...

2014
T. Šimon A. Czakó

This study assesses the effect of long-term (59 years) application of organic and inorganic fertilizers on soil organic matter and enzyme activity. Total organic C, total organic N, hot water soluble C, microbial biomass C and dehydrogenase activity were evaluated in soil from the long-term field experiment in Prague-Ruzyně (Orthic Luvisol, clay loam). Total organic C and N increased significan...

2013
I. L. Hamma

There is need for proper understanding of plant nutrients status in the soil and their requirements by various crops under different farming system. Farmers must be encouraged to make compost from residues, house refuse and other decomposable wastes available with them. If crop residues have been incorporated into the soil, care must be taken that it must be incorporated well in advance (about ...

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