scholarly journals Sequential Phosphorus Extraction of a P-Labeled Oxisol under Contrasting Agricultural Systems

2002 ◽  
Vol 66 (3) ◽  
pp. 868 ◽  
Author(s):  
S. Buehler ◽  
A. Oberson ◽  
I. M. Rao ◽  
D. K. Friesen ◽  
E. Frossard
Keyword(s):  
Agricultural Systems ◽  
Sequential Phosphorus Extraction ◽  
Phosphorus Extraction

scholarly journals Sequential Phosphorus Extraction of a 33 P-Labeled Oxisol under Contrasting Agricultural Systems

2002 ◽  
Vol 66 (3) ◽  
pp. 868-877 ◽  
Author(s):  
S. Buehler ◽  
A. Oberson ◽  
I. M. Rao ◽  
D. K. Friesen ◽  
E. Frossard
Keyword(s):  
Agricultural Systems ◽  
Sequential Phosphorus Extraction ◽  
Phosphorus Extraction

Testing mechanisms underlying the Hedley sequential phosphorus extraction of soils

2019 ◽  
Vol 182 (4) ◽  
pp. 570-577 ◽  
Author(s):  
Anika Klotzbücher ◽  
Klaus Kaiser ◽  
Thimo Klotzbücher ◽  
Maximilian Wolff ◽  
Robert Mikutta
Keyword(s):  
Sequential Phosphorus Extraction ◽  
Phosphorus Extraction

Does basic education students know the importance of agroecology production systems for the conservation of biodiversity?

2020 ◽  
Vol 9 (4) ◽  
pp. e04942784
Author(s):  
Andrea Aline Mombach ◽  
Carla Grasiele Zanin Hegel ◽  
Rogério Luis Cansian ◽  
Sônia Beatris Balvedi Zakrzevski
Keyword(s):  
Student Perceptions ◽  
Rural Areas ◽  
Water Conservation ◽  
Social Transformation ◽  
Basic Education ◽  
Production Systems ◽  
Agricultural Systems ◽  
Education Students ◽  
Chi Square ◽  
Conservation Of Biodiversity

The perception of a basic education of the importance of agroecological agricultural systems for human and environmental health is fundamental for changes in consumption habits, the conservation of local biodiversity and long-term social transformation. We analyzed, by utilizing a questionnaire consisting of open and closed questions, the perceptions about agroecological and conventional agricultural production systems in 360 final students of basic education residing in nine Functional Planning Regions of southern Brazil. We used classification categories for answers within thematic axes, expressed in percentages and analyzed by means of Chi-square and Kruskal-Wallis tests. In general, students recognize agroecological systems as healthier for their families and for soil and water conservation, largely because they do not use agrochemicals. However, they demonstrated difficulties when arguing their importance for the conservation of biodiversity, ecosystems and for ensuring the food security of populations. Television was the main source of information related to agroecology, mainly for students residing in rural areas, thus pointing out shortcomings in basic education regarding the approach of the theme in schools. Our results show the need to build a complex network of knowledge and discussions on agroecological agricultural systems in basic education, involving changes in student perceptions, behaviors and sustainable choices.

Reducing the Vulnerability of Uzbekistan's Agricultural Systems to Climate Change

2013 ◽  
Author(s):  
William R. Sutton ◽  
Jitendra P. Srivastava ◽  
James E. Neumann ◽  
Peter Droogers ◽  
Brent Boehlert
Keyword(s):  
Climate Change ◽  
Agricultural Systems
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