Zobrazeno 1 - 10
of 23
pro vyhledávání: '"J.J.R. Groot"'
Publikováno v:
Tree-crop interactions-a physiological approach. Wallingford, UK: CAB International
Tree-crop interactions-a physiological approach
Tree-crop interactions-a physiological approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5adc8b617448cf50b5927a24e9d0247f
https://doi.org/10.1079/9781780645117.0221
https://doi.org/10.1079/9781780645117.0221
Publikováno v:
Geoderma, 86, 43-59
Geoderma 86 (1998)
Geoderma 86 (1998)
In a previous study, simulations of agricultural production potentials were made for different exploratory scenarios considering population growth, type of diet and low and high input agriculture. Results indicated that future world populations can b
Publikováno v:
Nutrient Cycling in Agroecosystems. 50:181-189
The world population is expected to grow to 10 billion people in 2040, requiring food production at least to triple, as a combined result of population growth and dietary changes. In this study scenarios for food security are developed for 15 major r
Autor:
Andrew P. Whitmore, J.J.R. Groot
Publikováno v:
Plant and Soil. 192:237-247
The leaves and crowns from 15N-labelled sugar beets were incubated in either a silty clay loam or sand soil for almost one year. Four additions of fresh, chopped residues mixed with soil were tested: 15N-labelled leaves alone, 15N-labelled leaves plu
Autor:
J.J.R. Groot, A.P. Whitmore
Publikováno v:
European Journal of Agronomy. 3:367-373
Sugar beet leaves, a mixture of sugar beet crowns and leaves, cabbage leaves or spinach leaves were either coarsely or finely chopped and mixed with either a sandy or clay soil and incubated at 20 ° C under optimal moisture conditions for 24 weeks.
Publikováno v:
Advances in integrated soil fertility management in sub-Saharan Africa : challenges and opportunities
Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities ISBN: 9781402057595
Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities ISBN: 9781402057595
Agricultural growth rates of about 6% are required in sub-Saharan Africa to fuel economic growth. It is generally acknowledged that this will require sustainable agricultural intensification through the increased use of external inputs, in combinatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e098e424ca9f3ee52282e2c3f4976cd3
http://agritrop.cirad.fr/547774/
http://agritrop.cirad.fr/547774/
Publikováno v:
Terrestrial Global Productivity. San Diego: Academic Press
Terrestrial Global Productivity
Terrestrial Global Productivity
The growth of agricultural production worldwide has led to an increasing role of agro-ecosystems within the global carbon cycle. The objective of this chapter is to estimate the contribution of agricultural crops in this total carbon flux. In additio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8af9ab0131ebaa24922cb9d38b6d620
https://research.wur.nl/en/publications/productivity-of-agro-ecosystems
https://research.wur.nl/en/publications/productivity-of-agro-ecosystems
Publikováno v:
Agriculture, Ecosystems and Environment 81 (2000)
Agriculture, Ecosystems and Environment, 81, 103-112
Agriculture, Ecosystems and Environment, 81, 103-112
The required increase in agricultural production to meet future food demand will further increase pressure on land resources. Integrative indicators of the current status of the agricultural production capacity of land and their change over time are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89ea2d2f3813d3d62d4b0bcca00512c9
https://research.wur.nl/en/publications/land-quality-indicators-for-sustainable-land-management-proposed-
https://research.wur.nl/en/publications/land-quality-indicators-for-sustainable-land-management-proposed-
Publikováno v:
Philosophical Transactions of the Royal Society. Series B, Biological Sciences, 352, 917-928
Philosophical Transactions of the Royal Society. Series B, Biological Sciences 352 (1997)
Philosophical Transactions of the Royal Society. Series B, Biological Sciences 352 (1997)
Growing prosperity in the South is accompanied by human diets that will claim more natural resources per capita. This reality, combined with growing populations, may raise the global demand for food crops two– to four–fold within two generations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b083ff8d079d2aa202b0be2eb61b7c70
https://europepmc.org/articles/PMC1691975/
https://europepmc.org/articles/PMC1691975/
Autor:
H. Van Keulen, J.J.R. Groot
Publikováno v:
Plant Nutrition — Physiology and Applications ISBN: 9789401067515
A simulation model for cereal growth, crop nitrogen dynamics and soil nitrogen supply was used to compare the effects of alternative fertilizer application strategies on nitrogen use efficiency, crop yield and grain quality. Based on the simulations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24c5102dd0151670aad1ecefa994997f
https://doi.org/10.1007/978-94-009-0585-6_115
https://doi.org/10.1007/978-94-009-0585-6_115