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Soil nitrogen (N) cycling is an important factor in terrestrial ecosystems, including grasslands. Understanding the effects of grazing on nitrogen cycling in grassland ecosystems is critical for better management and for improving knowledge of the mechanisms underlying grassland degradation and c...


Yan, R.Yang, G.Chen, B.Yan, Y.Xin, X.Li, L.Zhu, X.[Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China]Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China

We explore the role of agriculture in destabilizing the Earth system at the planetary scale, through examining nine planetary boundaries, or “safe limits”: land-system change, freshwater use, biogeochemical flows, biosphere integrity, climate change, ocean acidification, stratospheric ozone deple...


Campbell, Bruce M.Beare, Douglas J.Bennett, Elena M.Hall-Spencer, Jason M.Ingram, John S. I.Jaramillo, FernandoOrtiz, R.Ramankutty, NavinSayer, Jeffrey A.Shindell, Drew[Agriculture production as a major driver of the Earth system exceeding planetary boundaries]Agriculture production as a major driver of the Earth system exceeding planetary boundaries

Optimizing a three-way pact comprising crop yields, fertility inputs and greenhouse gases may minimize the contribution of croplands to global warming. Fluxes of N2O, CO2 and CH4 from soil were measured under maize (Zea mays L.) grown using 0, 60 and 120 kg N hm-2 as NH4NO3-N and composted manure...


Mapanda, FaraiWuta, MenasNyamangara, JusticeRees, RM[Effects of organic and mineral fertilizer nitrogen on greenhouse gas emissions and plant-captured carbon under maize cropping in Zimbabwe]Effects of organic and mineral fertilizer nitrogen on greenhouse gas emissions and plant-captured carbon under maize cropping in Zimbabwe
Villordon, A.LaBonte, D.R.Firon, N.Carey, E.[Variation in Nitrogen rate and local availability alter root architecture attributes at the onset of storage root initiation in ‘Beauregard’ sweetpotato.]Variation in Nitrogen rate and local availability alter root architecture attributes at the onset of storage root initiation in ‘Beauregard’ sweetpotato.

Next to drought, poor soil fertility is the single biggest cause of hunger in Africa. ICRISAT-Zimbabwe has been working for the past 10 years to encourage small-scale farmers to increase inorganic fertiliser use as the first step towards Africa’s own Green Revolution. The program of work is found...


Twomlow, StephenRohrbach, D.Dimes, John P.Rusike, J.Mupangwa, W.Ncube, B.Hove, L.Moyo, M.Mashingaidze, N.Mahposa, P.[Microdosing as a pathway to Africas Green Revolution: evidence from broadscale on farm]Microdosing as a pathway to Africas Green Revolution: evidence from broadscale on farm
Meyer, N.Welp, G.Rodionov, A.Borchard, NilsMartius, C.Amelung, Wulf[Nitrogen and phosphorus supply controls soil organic carbon mineralization in tropical topsoil and subsoil]Nitrogen and phosphorus supply controls soil organic carbon mineralization in tropical topsoil and subsoil

The capacity of woody and non-woody species to supply N to rice (Oryza sativa) was evaluated in field and greenhouse experiments in Palmira, Colombia. N liberation rates decreased in the order: Indigofera constricta > Mucuna deerengianum > Mucuna pruriens var. Brunin > Tithonia diversifo...


Cobo Borrero, Juan G.Kass, DMuschler, RArze Borda, JABarrios, E.Thomas, Richard J.[Abonos verdes de leñosas y no leñosas como fuente de nitrógeno a cultivos anuales]Abonos verdes de leñosas y no leñosas como fuente de nitrógeno a cultivos anuales
Wortmann, Charles S.Lynch, Jonathan P.[Bean improvement for low fertility in Africa (BILFA): I. Low soil nitrogen availability]Bean improvement for low fertility in Africa (BILFA): I. Low soil nitrogen availability

Performance under sub-optimal nitrogen (N) conditions, of early maturing maize cultivars bred for tolerance to drought and Striga parasitism in the Nigerian savanna is not known. This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N con...


Kamara, A.Ewansiha, S.U.Tofa, A.I.[Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions]Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions

Wunder, SvenSunderlin, William D.[ Oil, Macroeconomics, and Forests : Assessing the Linkages ]

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