نتایج جستجو برای: gypsiferous soil

تعداد نتایج: 180771  

2012
S. Miyamoto

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2015
W. Luo P. N. Nelson M.-H. Li J. Cai Y. Zhang Y. Shan R. Wang X. Han

Introduction Conclusions References

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2017
Elaine Fowler Stephen F Austin NICOLE FOWLER Melinda Faulkner

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2017
F. J. BAKER G. M. SCHAFER

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2014

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2017
Julia Griselda Cerón-Bretón Rosa María Cerón-Bretón Jesús Jaime Guerra-Santos Victor Córdova-Quiroz

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2011
Stephen Nortcliff

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Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2005
D Fraters L J M Boumans T C van Leeuwen W D de Hoop

The effect of policy measures on agriculture and water quality with respect to nitrogen have been monitored on farms in the sandy regions since the early 1990s. Nitrogen surplus on dairy farms decreased by 100 kg/ha (30%) in the 1991-1999 period due to demonstration projects and the implementation of MINAS, limiting farm gate balance surplus. Nitrogen surplus on arable farms has slightly decrea...

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Journal: :The New phytologist 2011
Caroline E R Lehmann Sally A Archibald William A Hoffmann William J Bond

• We aimed to identify the limits of savanna across Africa, Australia and South America. We based our investigation on the rich history of hypotheses previously examined: that the limits of savanna are variously determined by rainfall, rainfall seasonality, soil fertility and disturbance. • We categorized vegetation on all continents as 'savanna' (open habitats with a C(4) grass layer) or 'not-...

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2001
Chris Fetter

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