Nitrogen balance studies in rice using 15N-labelled urea and urea supergranules

1989 ◽  
Vol 113 (1) ◽  
pp. 119-121 ◽  
Author(s):  
S. K. Mohanty ◽  
S. P. Chakravorti ◽  
A. Bhadrachalam
Keyword(s):  
Nitrogen Balance ◽  
Rice Field ◽  
Nitrogen Efficiency ◽  
Seasonal Effects ◽  
Split Application ◽  
Deep Placement ◽  
Fertilizer Nitrogen ◽  
Urea Supergranules ◽  
The Poor ◽  
Different Types

Recovery of applied nitrogen by the rice crop is invariably low, often 30–50% (Prasad & De Datta 1979). The poor recovery has been attributed to different types of losses occurring in the rice field. Recovery improved with split application, delayed application or deep placement (Pillai & Vamadevan 1978; Craswell & Vlek 1979), indicating that the management factor plays an important role in increasing fertilizer nitrogen efficiency. To investigate such factors, and seasonal effects, field experimentswere carried out using 15N-labelled urea (PU) and urea supergranules (USG). The recovery of fertilizer 15N by the plant and retention in the soil were studied in both dry and wet seasons.

Fertilizer Nitrogen Efficiency in Durum Wheat under Rainfed Mediterranean Conditions: Effect of Split Application

2006 ◽  
Vol 98 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Luis López-Bellido ◽  
Rafael J. López-Bellido ◽  
Francisco J. López-Bellido
Keyword(s):  
Durum Wheat ◽  
Nitrogen Efficiency ◽  
Split Application ◽  
Fertilizer Nitrogen ◽  
Mediterranean Conditions

Urea deep placement in combination with Azolla for reducing nitrogen loss and improving fertilizer nitrogen recovery in rice field

2018 ◽  
Vol 218 ◽  
pp. 141-149 ◽  
Author(s):  
Yuanlin Yao ◽  
Min Zhang ◽  
Yuhua Tian ◽  
Miao Zhao ◽  
Bowen Zhang ◽  
...  
Keyword(s):  
Rice Field ◽  
Nitrogen Loss ◽  
Nitrogen Recovery ◽  
Deep Placement ◽  
Fertilizer Nitrogen ◽  
Urea Deep Placement

The Heterogeneous Nature of Urban Poor Families

2012 ◽  
Vol 11 (1) ◽  
pp. 94-118 ◽  
Author(s):  
Rodrigo Salcedo ◽  
Alejandra Rasse
Keyword(s):  
Decision Making ◽  
Urban Poor ◽  
Poverty Reduction ◽  
The Poor ◽  
Poor Families ◽  
Heterogeneous Nature ◽  
Different Types ◽  
Decision Making Processes ◽  
Different Cultures

This paper addresses the scholarly debate on cultural homogeneity or heterogeneity of urban poor families. While authors such as Lewis (1959) or Wacquant (2000 ; 2001) claim that structural disadvantages are linked to a particular type of identity or culture, others such as Hannerz (1969) , Anderson (1999 ; 2002) , or Portes ( Portes and Manning, 1986 ; Portes and Jensen, 1989 ) believe that it is possible to find different behaviors, expectations, decision–making processes, and outcomes among people living in seemingly identical structural conditions ( Small et al., 2010 ). Using Santiago, Chile, as a case study, we differentiate five different cultures or identities among the poor. Those identities seem to be the product of different historical and political circumstances, as well as of different types of public policies. The paper ends with a discussion of the need for poverty reduction policies to consider these differences among the poor.

Rubber Modified Asphalt Storage Stabilizer Option

2011 ◽  
Vol 311-313 ◽  
pp. 1136-1139
Author(s):  
Zhong He Chen ◽  
Zheng Qian Zhang ◽  
Hua Lin Luo ◽  
Ning Ning Dong
Keyword(s):  
Storage Stability ◽  
Experimental Methods ◽  
Modified Asphalt ◽  
The Poor ◽  
Different Types ◽  
And Storage ◽  
Different Doses

In order to improve the poor compatibility and storage stability of rubber modified asphalt,authors using theoretical and experimental methods, to investigate the influence of the stabilizer on the storage stability and the using performance of rubber modified asphalt, through adding the different types and different doses of stabilizer, to improve its storage stability and using performance of modified asphalt.

scholarly journals Tracking the Fate of Fertilizer Nitrogen in a Paddy Rice Field Using Isotope Technology

2019 ◽  
Vol 29 (1) ◽  
pp. 419-428
Author(s):  
Xiangfei Yu ◽  
Yingying Xu ◽  
Hui Zhu ◽  
Brian Shutes ◽  
Baixing Yan ◽  
...  
Keyword(s):  
Rice Field ◽  
Paddy Rice ◽  
Fertilizer Nitrogen ◽  
Paddy Rice Field

scholarly journals Studies Regarding the Development of Academic Spin-Offs in Romania and Worldwide

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Andrei BORŞA ◽  
Sevastiţa MUSTE ◽  
Andruta CERBU (MURESAN)
Keyword(s):  
Business Environment ◽  
Academic Institution ◽  
Entrepreneurial Ventures ◽  
The Poor ◽  
Viable Solution ◽  
Different Types ◽  
Economical Performance

This paper aims to emphasize the opportunities that academic entrepreneurial ventures or “spin-offs” could offer in Romania. Different types of spin-offs and their benefits have been reviewed. The poor economical performance of the SMEs (Small and Medium Sized Enterprises) due to crisis and their innovational trends were analyzed. The governmental strategies focused on innovation for creating new enterprises and improving the business environment, with results so far, were presented. The conclusion that emerged was that the spin-offs are a viable solution that can contribute to our country’s prosperity and its academic institution.

Policy Implications

2021 ◽  
pp. 155-186
Author(s):  
R. Barry Ruback
Keyword(s):  
Economic Sanctions ◽  
Penal Code ◽  
Policy Implications ◽  
Model Penal Code ◽  
State Governments ◽  
Legal Standards ◽  
Law And Courts ◽  
The Poor ◽  
Different Types

This last chapter, Chapter 8, looks at larger issues of economic sanctions. Reitz and Klingele, the reporters of the Model Penal Code argued that economic sanctions are unprincipled (they violate legal standards and discriminate against the poor), unsuccessful (they are generally unpaid and, as presently constituted, do not meet the purposes of sentencing), and are unending (local and state governments are continuing to impose economic sanctions and other legal financial obligations in order to meet budgetary needs). Also, in the final chapter the author discusses how the existing research can be used to inform policy, particularly regarding questions of whether there should be different types of economic sanctions, what those types should be, and what amounts of economic sanctions should be imposed. These policy arguments are based on the assumption that the law and courts should be concerned about victims, offenders, and the community.

Assessing Intelligence Performance

2010 ◽  
pp. 86-104 ◽  
Author(s):  
John A. Gentry
Keyword(s):  
General Theory ◽  
Poor Performance ◽  
Future Research ◽  
Theory Of Intelligence ◽  
The Poor ◽  
Intelligence Services ◽  
Different Types ◽  
Intelligence Agencies ◽  
Performance Rate ◽  
The U.S

Literatures on intelligence predominantly focus on intelligence failures, often explicitly claiming that the failures reflect the poor performance of the intelligence agencies as a whole. Despite negative claims on the performance of these agencies, politicians, citizens, and scholars often have little to discuss on intelligence performance. They seldom ask what the intelligence services do in aggregate; what their performance rate is; how the infrequent yet prominent failures compare to ongoing performance that is invisible to the outsiders because it is at least adequate; and how ignorance of the performance of the different types of intelligence activities affects the overall assessment of the intelligence services. This little discussion on some of the important aspects of intelligence performance resulted in the absence of general theory of intelligence performance. To judge better intelligence performance, understanding the functions and the nature of work of the intelligence services is a must. This article hence uses existing theory and available data to determine the theory of the whole performance of intelligence agencies. It also provides a scorecard of the recent performance of the U.S. intelligence and suggests avenues for future research.

Intake, digestibility in vivo and nitrogen balance in sheep of pea-wheat bi-crop silages harvested at three stages of maturity

1999 ◽  
Vol 1999 ◽  
pp. 80-80 ◽  
Author(s):  
A.T. Adesogan ◽  
M.B. Salawu ◽  
M.D. Fraser ◽  
S.T. Evans ◽  
R. Fychan ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Nitrogen Balance ◽  
Low Cost ◽  
N Balance ◽  
Animal Performance ◽  
Fertilizer Nitrogen ◽  
Three Stages ◽  
The Cost

The production and utilization of complementary cereal/legume bi-crops as ruminant feeds is beneficial for several reasons. The nitrogen fixation by the legume reduces the amount of fertilizer nitrogen required by the cereal. The cereal in turn supports the legume, thereby preventing the lodging that typifies pure stands of mature forage peas. When bi-crops are fed, the legume and cereal components respectively provide relatively low cost protein and energy, which may be synchronously supplied to the animal. In Denmark, pea-barley bi-crops are reported to reduce the cost of feeding without reducing intake and animal performance (Kristensen, 1992). However, little is known about the intake potential and level of animal performance sustainable from such bi-crops when produced and fed under UK conditions. Therefore this study determined the intake, in vivo digestibility and nitrogen (N) balance in sheep of spring sown, peawheat bi-crop silages harvested at three stages of maturity.

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