References of "Dufey, Joseph"
     in
Bookmark and Share    
Full Text
See detailHow can long-term experimental plots can help us to understand the sustainability of different phosphorus inputs ?
Renneson, Malorie ULg; dufey, Joseph; Roisin, Christian et al

Poster (2014)

During the last twenty years, we observed a constant reduction of mineral fertilizer use, due to prices increase and environmental awareness, and an increase of crop removal, leading to a phosphorus (P ... [more ▼]

During the last twenty years, we observed a constant reduction of mineral fertilizer use, due to prices increase and environmental awareness, and an increase of crop removal, leading to a phosphorus (P) budget decrease. These changes are feared for a decrease of soil P content, which is already observed in some regions in Wallonia. However, P being an essential element for plant growth, is a such management compatible with yield maintaining? Are the current cropping systems sustainable? To answer to the questions, different studies are made. However, long-term data are rarely available to understand the influence of cropping systems on the soil behavior, leaching risks or to choose adequate indicators of P. To answer to these questions in our soils, 2 experimental plots of the Walloon Agricultural Research Center. These experimental plots were established in 1967 and 1959 in order to evaluate the effect of, respectively, 3 P and K input levels and different organic inputs on the production. Soils samples were taken in plots and analyzed in laboratory. So, different P indicators and edaphic parameters were determined. This study showed that all indicators are coherent with P levels and correlated with yields but no many differences can be shown between fertilizer types. Meanly, zero P-input engenders a decrease of yield of 7%, while a double input increases yield of 2% in comparison to plots with an input corresponding to crop export. So, financially, the zero P-input option is rarely profitable in the long-term and double input of P removed is never financially sustainable. Leaching into deeper soils levels was studied with analysis of deeper horizons which indicated any leaching , even in plots with double inputs. Indeed, soil P contents in depth were similar in these plots than those with no P-inputs or soils under forest cover. So, to conclude, these plots help to study the sustainability of cropping systems in real situations and to determine appropriate management of P. [less ▲]

Detailed reference viewed: 20 (1 ULg)
Full Text
Peer Reviewed
See detailHow can long-term experimental plots can help us to understand the sustainability of different phosphorus inputs ?
Renneson, Malorie ULg; Dufey, Joseph; Roisin, Christian et al

Poster (2013, September)

Detailed reference viewed: 32 (10 ULg)
Full Text
Peer Reviewed
See detailValorisation of a water hyacinth in vermicomposting using an epigeic earthworm Perionyx excavatus in Central Vietnam
Zirbes, Lara ULg; Renard, Quentin; Dufey, Joseph et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011), 15(1)

Detailed reference viewed: 56 (16 ULg)
Full Text
See detailEffect of parent materials and land use on soil phosphorus characteristics in Southern Belgium
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

Conference (2010, September 29)

Detailed reference viewed: 15 (3 ULg)
Full Text
Peer Reviewed
See detailEffects of parental material and land use on soil phosphorus forms in Southern Belgium
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

in Gilkes, RJ; Prakongkep, N (Eds.) Proceedings of the 19th World Congress of Soil Science; Soil Solutions for a changing World (2010, August 03)

Detailed reference viewed: 39 (13 ULg)
Full Text
See detailEffects of edaphic factors and agricultural practices on phosphorus availability
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

Conference (2010, February 23)

Detailed reference viewed: 32 (7 ULg)
Full Text
Peer Reviewed
See detailMise en relation de la diversité des vers de terre et des caractéristiques du sol de Thua Thien Hue (Centre Vietnam)
Zirbes, Lara ULg; Collin, Caroline; Dufey, Joseph et al

in Tropical Conservation Science (2009), 2(3), 282-298

The large proportion of sandy soils of Thua Thien Hue, in Central Vietnam, present a particular habitat for soil-inhabiting organisms among which earthworms represent close to 70% of total biomass. This ... [more ▼]

The large proportion of sandy soils of Thua Thien Hue, in Central Vietnam, present a particular habitat for soil-inhabiting organisms among which earthworms represent close to 70% of total biomass. This study identified relationships between the characteristics of soil and earthworms. Our inventories yielded the presence of seven species of earthworms belonging to the families Glossoscolecidae, Megascolecidae and Microchaetidae. These were: Pontoscolex corethrurus, Glyphidrilus papillatus, Pheretima rodericensis, Pheretima danangana, Pheretima sp., Perionyx excavatus, and Lampito mauritii. Those of the Microchaetidae were present in acid soils with a high rate of silt and clay. Species in the other families were associated with poor but less acid sandy soils. This study also showed that the number of P. corethrurus was significantly higher in orchards while L. mauritii was significantly more common in soils with cultures other than rice. The species G. papillatus was significantly more abundant in fallow and was the only species found in this habitat. Highest earthworm diversity (Shannon-Wiener index(H=0.97)) was found in crops like manioc and sweat potatoes rather than in rice. [less ▲]

Detailed reference viewed: 138 (29 ULg)
Full Text
See detailDéveloppement rural et coopération interuniversitaire
Dang Vu, Binh; Vu Dinh, Ton; Lebailly, Philippe ULg et al

Conference (2008)

Detailed reference viewed: 25 (7 ULg)