نتایج جستجو برای: np fertilizers

تعداد نتایج: 54186  

2013
Ranjit Chatterjee

A study was conducted to assess the impact of different nutrient combination of field tomato on post harvest storage life and organoleptic quality of fresh fruits. Fourteen different treatment combinations comprising two organic manures (Farmyard manure and vermicompost), inorganic fertilizers and biofertilizer in different levels were laid out in RBD with three replications during 2005-06 and ...

Journal: :Environmental science & technology 2012
Sherub Phuntsho Ho Kyong Shon Tahir Majeed Ibrahim El Saliby Saravanamuthu Vigneswaran Jaya Kandasamy Seungkwan Hong Sangyoup Lee

In fertilizer-drawn forward osmosis (FDFO) desalination, the final nutrient concentration (nitrogen, phosphorus, potassium (NPK)) in the product water is essential for direct fertigation and to avoid over fertilization. Our study with 11 selected fertilizers indicate that blending of two or more single fertilizers as draw solution (DS) can achieve significantly lower nutrient concentration in t...

2006
N. A. Slaton K. R. Brye R. J. Norman B. R. Golden J. R. Ross

Few studies have examined the use of poultry litter as an alternative to inorganic P and K fertilizers for flood-irrigated rice. The objective of this study was to compare fresh and pelletized poultry litter to inorganic P and K fertilizers to document the availability of P and K in poultry litter. Inorganic P and K fertilizers, fresh broiler litter, and pelletized litter were preplant-incorpor...

2016
Pengfei Han Wen Zhang Guocheng Wang Wenjuan Sun Yao Huang

Cropland soil organic carbon (SOC) is undergoing substantial alterations due to both environmental and anthropogenic changes. Although numerous case studies have been conducted, there remains a lack of quantification of the consequences of such environmental and anthropogenic changes on the SOC sequestration across global agricultural systems. Here, we conducted a global meta-analysis of SOC ch...

Journal: :Anais da Academia Brasileira de Ciencias 2015
Francisco A Morais Luciano C Gatiboni

The aim of this study was to evaluate P availability, P and C contained in the microbial biomass, and enzymatic activity (acid phosphatases and β-glucosidases) in a Nitisol with the application of mineral and organo-mineral fertilizers. The experiment was performed in a protected environment with control over air temperature and soil moisture. The experimental design was organized in a "5 x 4" ...

Journal: :Pakistan Journal of Biological Sciences 2001

Journal: :The Science of the total environment 2012
P Dumortier M Elskens J F Focant L Goeyens K Vandermeiren L Pussemier

Dioxins can enter the food chain at any stage, including crop fertilization. Therefore, we developed a simple method for estimating the introduction of dioxins in the food chain according to various fertilization practices. Using dioxin's contamination data taken from the literature, we estimated that fertilization accounts for approximately 20% of the dioxin inputs on agricultural soils at cou...

Journal: :Inf. Comput. 1995
Ronald Fagin Larry J. Stockmeyer Moshe Y. Vardi

It is a well-known result of Fagin that the complexity class NP coincides with the class of problems expressible in existential second-order logic (1 ;). Monadic NP is the class of problems expressible in monadic Z;, i.e., 1: with the restriction that the second-order quantifiers range only over sets (as opposed to ranging over, say, binary relations). We prove that connectivity of finite graph...

Journal: :Theoretical Computer Science 2018

Journal: :Journal of Computer and System Sciences 2004

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