1.2 Coordonnées des personnes-ressources et des institutions impliquées dans l'évaluation et la documentation de la Technologie

Nom du projet qui a facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Preventing and Remediating degradation of soils in Europe through Land Care (EU-RECARE )

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Hoe Duurzaam - Pays-Bas

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

ROM3D - Pays-Bas

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Wageningen Environmental Research (Alterra) - Pays-Bas

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Provincie Gelderland - Pays-Bas

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Vitens - Laat Water Voor Je Werken - Pays-Bas

1.3 Conditions relatives à l'utilisation par WOCAT des données documentées

Le compilateur et la(les) personne(s) ressource(s) acceptent les conditions relatives à l'utilisation par WOCAT des données documentées:

Oui

2.1 Courte description de la Technologie

Définition de la Technologie:

Separation of cow manure is a common practice on dairy farms in The Netherlands to improve the nutrient use efficiency.

2.2 Description détaillée de la Technologie

Description:

Het primaire doel van mestscheiding is de productie van een dikke
fractie met hoge gehalten aan organische stof en mineralen en een laag vochtgehalte. Een dergelijke geconcentreerde
fosfaatrijke fractie is een waardevolle organische meststof en kan over grote afstand vervoerd worden. De
dunne waterige fractie, met daarin het grootste deel van de stikstof, kan op eigen grond of in de nabije omgeving als
meststof worden aangewend of verder worden gezuiverd tot loosbaar water.

Slurry manure is fed through a manure separator that separates much of the thick material from the liquid portion. These fractions differ in the proportion between P and N; the thick fraction contains relatively more P than the thin fraction.
The thick fraction is used on maize fields or as substrate in cow stables; the thin fraction, with the larger part of the nitrogen, can be used on other parts of the farm or is exported from the farm to be treated for discharge in the environment. Due to stricter regulations for the application of N and P to crop land and grassland, less manure may be applied to the land. If manure must be exported because the threshold for P is reached, this implies that also N is exported from the farm.

Purpose of the Technology: Slurry from livestock consists of more than 90% of water. The primary purpose of manure separation is to produce a thick fraction with high contents of organic matter and nutrients and a low moisture content. The thick fraction is a valuable fertiliser and can be transported over large distances. The thin fraction, with the larger part of the nitrogen, can be applied as fertiliser on the farm, on farmland in the proximity, or can be treated into a quality suitable for discharge in the environment or water drainage system.

Manure separation allows farmers to use organic matter from manure more efficiently at the farm level. Manure separation increases the efficiency of processing and using manure in 5 ways:

1. By concentrating phosphorus in the thick fraction the volume of manure to be exported can be decreased, and also the export of nitrogen from the farm.
2. Manure separation creates three types of manure (thick, thin and mixed), which allows for differentiated application to different fields and crops, and reductions on requirements for artificial fertiliser.
3. Manure separation decreases the volume of manure to be exported from farms, and therefore saves energy and transport costs.
4. The thick fraction can be stored in stacks, taking up less space.
5. The thick fraction can be used as substrate in stables, replacing costly sawdust.

Establishment / maintenance activities and inputs: Purchase a manure separator. Periodically feed your collected slurry manure through the separator and then apply the thick portion to your fields. Discard the liquid portion.

Natural / human environment: Dairy farming on sandy soils in the eastern part of The Netherlands. Stricter manure regulation originting from the Nitrates Directive sets a limit on the amounts of animal manure for farms on sandy and loess soils in the eastern and southern part of The Netherlands.

2.3 Photos de la Technologie

2.5 Pays/ région/ lieux où la Technologie a été appliquée et qui sont couverts par cette évaluation

2.6 Date de mise en œuvre de la Technologie

Si l'année précise est inconnue, indiquez la date approximative: :

• il y a moins de 10 ans (récemment)

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :

• par le biais de projets/ d'interventions extérieures

Commentaires (type de projet, etc.) :

The land users's initiative was through the application for the project Healthy Sand by a group of farmers. During the Gezond Zand Project the group organised themselves in the Foundation HOEDuurzaam. The project ran from 2012-2014 and is followed by the new project BodemRijk.
The external initiative was from the drinking water company Vitens and the Province of Gelderland in the same period.

3.2 Type(s) actuel(s) d'utilisation des terres, là où la Technologie est appliquée

Commentaires:

Major cash crop annual cropping: Potatoes
Major food crop annual cropping: Maize, cereals
Major food crop perennial (non-woody) cropping: Grass

Major land use problems (compiler’s opinion): Decrease of soil organic matter content.

Major land use problems (land users’ perception): The group of farmers in the area expeience decreasing organic matter content in soil.

Cut-and-carry/ zero grazing: feeding in stables

Improved pasture: feeding in field

Livestock density: > 100 LU /km2

3.4 Approvisionnement en eau

Commentaires:

Water supply: rainfed, mixed rainfed - irrigated, rainfed, mixed rainfed - irrigated

3.5 Groupe de GDT auquel appartient la Technologie

• gestion intégrée de la fertilité des sols

3.6 Mesures de GDT constituant la Technologie

Commentaires:

Main measures: agronomic measures

Type of agronomic measures: manure / compost / residues

3.7 Principaux types de dégradation des terres traités par la Technologie

Commentaires:

Main type of degradation addressed: Cn: fertility decline and reduced organic matter content

Main causes of degradation: soil management (Intensive ploughing)

Secondary causes of degradation: crop management (annual, perennial, tree/shrub) (Intensive crop management)

3.8 Prévention, réduction de la dégradation ou réhabilitation des terres dégradées

Spécifiez l'objectif de la Technologie au regard de la dégradation des terres:

• restaurer/ réhabiliter des terres sévèrement dégradées

Commentaires:

Main goals: rehabilitation / reclamation of denuded land

4.1 Dessin technique de la Technologie

4.2 Informations générales sur le calcul des intrants et des coûts

autre/ monnaie nationale (précisez):

Euro

Indiquez le taux de change des USD en devise locale, le cas échéant (p.ex. 1 USD = 79.9 réal brésilien): 1 USD = :

0,94

4.3 Activités de mise en place/ d'établissement

	Activité	Calendrier des activités (saisonnier)
1.	Buy a seperator

4.4 Coûts et intrants nécessaires à la mise en place

	Spécifiez les intrants	Unité	Quantité	Coûts par unité	Coût total par intrant	% des coût supporté par les exploitants des terres
Equipements	Seperator	Machine	1,0	5320,0	5320,0
Coût total de mise en place de la Technologie					5320,0
Coût total de mise en place de la Technologie en dollars américains (USD)					5659,57

Commentaires:

Life span of the seperator: 6 years
Number of parties sharing: 44

4.5 Activités d'entretien/ récurrentes

	Activité	Calendrier/ fréquence
1.	Operating separator	once per year
2.	Applying both thick fraction manure and RDM manure	once per year

4.6 Coûts et intrants nécessaires aux activités d'entretien/ récurrentes (par an)

	Spécifiez les intrants	Unité	Quantité	Coûts par unité	Coût total par intrant	% des coût supporté par les exploitants des terres
Main d'œuvre	Labour	ha	1,0	127,68	127,68	100,0
Main d'œuvre	Sampling manure	ha	1,0	21,28	21,28	100,0
Equipements	Machine use	ha	1,0	308,56	308,56	100,0
Equipements	rent of manure separator	h	1,0	16,5	16,5	100,0
Equipements	depreciation costs	m3	1,0	0,65	0,65
Equipements	maintenance	machine	1,0	0,3	0,3
Equipements	Electricity	ha	1,0	3,72	3,72	100,0
Engrais et biocides	Extra Potassium	ha	1,0	10,64	10,64	100,0
Coût total d'entretien de la Technologie					489,33
Coût total d'entretien de la Technologie en dollars américains (USD)					520,56

Commentaires:

Machinery/ tools: Separator, truck, loader, tractor

Cost of everything per hour was multiplied by totals and divided by hectares applied so costs per hectare are given. The establishment cost of the separator is the total unit. It was purchased by the farmer's foundation. It can not be given in a cost per hectare.

4.7 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

Labour. Equipment.

5.1 Climat

5.2 Topographie

Commentaires et précisions supplémentaires sur la topographie:

Altitudinal zone: 0-100 m a.s.l. (up to 45 metres a.s.l.)
Slopes on average: Flat and gentle (only incidentally.)

5.3 Sols

Si disponible, joignez une description complète du sol ou précisez les informations disponibles, par ex., type de sol, pH/ acidité du sol, capacité d'échange cationique, azote, salinité, etc.

Soil depth on average: Deep (A and B horizons up till 40 cm in Gleyic Podzols and Umbric Gleysols (ca 75% of the area). Hardly any soil organic matter below 15 cm. Rooting depth is up to 80 cm.) and very deep (deep topsoils rich in organic matter in the Fimic Anthrosols (12% of the area).)
Soil texture is coarse/light (most soils have a sandy texture due to the substrate consisting of cover sands) and medium (Soils in former creek valleys contain loam (Umbric Gleysols))
Soil fertility is low (Most soils have a low fertility due to the sandy substrate (specifically the Gleyic Podzols, ca 40% of the area)) and very high (in Fimic Anthrosols originated due to application of farmyard manure since medieval times (12% of the area))
Topsoil organic matter is medium (the purpose of the technology is to increase soil organic matter at farm level)
Soil drainage/infiltration is good (deep groundwater table (H>40-80 cm; L>120 cm) in the sandy soils on thick substrate of cover sands (in 65% of the area)) and medium (shallow groundwater tables in the Umbric Gleysols (35% of the area).
Soil water storage capacity is medium (in the other soils, varying with the soil organic matter content) and very high (in the Fimic Anthrosols with high SOM in the topsoil.)

5.4 Disponibilité et qualité de l'eau

Commentaires et précisions supplémentaires sur la qualité et la quantité d'eau:

Ground water table: <5m (in all soil types the highest level of the groundwater table during the year is <140 cm below the soil surface. The lowest level can be lower than 120 cm)
Availability of surface water is medium (From small rivers (De Berkel) and creeks)
Water quality (untreated) is poor drinking water (levels of the pesticides Bentazon and MCPP in the groundwater have incidentally exceeded the norms for drinking water production between 1985 and 2009)

5.5 Biodiversité

Commentaires et précisions supplémentaires sur la biodiversité:

Soil biodiversity is high in the Fimic Anthrolsols.

5.6 Caractéristiques des exploitants des terres appliquant la Technologie

Indiquez toute autre caractéristique pertinente des exploitants des terres:

Land users applying the Technology are mainly common / average land users
Difference in the involvement of women and men: Most outdoor farm operations are completed by men. Women often have jobs outside the farm.
Population density: 10-50 persons/km2
Annual population growth: < 0.5%
100% of the land users are average wealthy and own 100% of the land.
Off-farm income specification: Some farmers are contractual workers. Wives of farmers often have a job, e.g. at the municipality or craft work. Farms do not provide B&B or educational services.
Market orientation of cropland production system is mixed ( Maize is completely used to feed cows (max 20% of the area is allowd under maize); other arable crops are sold to the market. Dairy production is commercial. )
Market orientation of grazing land production system is commercial/market (dairy farmers grow feed crops for their livestock)

5.7 Superficie moyenne des terres utilisées par les exploitants des terres appliquant la Technologie

5.8 Propriété foncière, droits d’utilisation des terres et de l'eau

Propriété foncière:

• individu, avec titre de propriété

• Other forms of exploitation

Droits d’utilisation des terres:

• loué
• individuel

Commentaires:

Many fields have other forms of exploitation than individual ownership or lease.

5.9 Accès aux services et aux infrastructures

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

Disponibilité et qualité de l'eau

Revenus et coûts

Autres impacts socio-économiques

Impacts socioculturels

Impacts écologiques

Cycle de l'eau/ ruissellement

Sols

Réduction des risques de catastrophe et des risques climatiques

Autres impacts écologiques

6.2 Impacts hors site que la Technologie a montrés

6.3 Exposition et sensibilité de la Technologie aux changements progressifs et aux évènements extrêmes/catastrophes liés au climat (telles que perçues par les exploitants des terres)

Changements climatiques progressifs

Changements climatiques progressifs

	Saison	Augmentation ou diminution	Comment la Technologie fait-elle face à cela?
températures annuelles		augmente	bien

Extrêmes climatiques (catastrophes)

Catastrophes météorologiques

	Comment la Technologie fait-elle face à cela?
pluie torrentielle locale	bien
tempête de vent locale	bien

Catastrophes climatiques

	Comment la Technologie fait-elle face à cela?
sécheresse	bien

Catastrophes hydrologiques

	Comment la Technologie fait-elle face à cela?
inondation générale (rivière)	bien

Autres conséquences liées au climat

Autres conséquences liées au climat

	Comment la Technologie fait-elle face à cela?
réduction de la période de croissance	bien

Commentaires:

The technology is almost independent on environmental change, since it depends on the availability of manure. It is strongly dependent on the farming system (supply of manure and possibility to apply the separated fractions on farm).

6.4 Analyse coûts-bénéfices

Commentaires:

There is no evidence yet on economic and agronomic effects of using the manure separator in the area, so the land user's perspective cannot be given. Assessments of costs, effects and energy use based on modelling are available in the literature for dairy and arable farming in the NL in Schroder et al. (2009). These reveal that for farms with 1.75 to 2.18 dairy cows/ha and under conditions of manure production and application and manure regulations for this part of The Netherlands, the required export of N-manure could decrease by 35%, required N-fertiliser by 30-80%, and net energy use by 10-30%.

6.5 Adoption de la Technologie

Si disponible, quantifiez (nombre de ménages et/ou superficie couverte):

2

Commentaires:

100% of land user families have adopted the Technology with external material support

2 land user families have adopted the Technology with external material support

Comments on acceptance with external material support: The Foundation HOEDuurzaam purchased the manure separator. Farmers can use the machine for 15 euros/hour, and can apply for a subsidy from the Province when applying the technology. Two farmers were actively using the machine in 2014.

Comments on adoption trend: We do not have information on how many farmers were using the manure separator in 2015. This information will become available in 2016.

6.7 Points forts/ avantages/ possibilités de la Technologie

Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres
increases soil organic matter How can they be sustained / enhanced? continued application of the measure and subsidy for maintenance of the manure separator by the Foundation; support to farmers in calculating parameters for manure separation specific for their farm (type of manure, concentrations, fields to apply to, livestock intensity)
energy saving and reduced loss of N while maintaining equal levels of crop production

Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé
increases soil organic matter How can they be sustained / enhanced? continued application of the measure and subsidy for maintenance of the manure separator by the Foundation; support to farmers in calculating parameters for manure separation specific for their farm (type of manure, concentrations, fields to apply to, livestock intensity)
increases available soil moisture
reduces leaching of nitrate to the groundwater
reduces energy use for manure handling and transport

6.8 Faiblesses/ inconvénients/ risques de la Technologie et moyens de les surmonter

Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé	Comment peuvent-ils être surmontés?
there is still little experience with manure separation and there are many uncertainties relating to separation efficiency and financial aspects

7.1 Méthodes/ sources d'information

7.3 Liens vers les informations pertinentes en ligne

Titre/ description:

Mestscheiding: relaties tussen techniek, kosten, milieu en landbouwkundige waarde - Jaap Schröder, Fridtjof de Buisonjé, Gerrit Kasper, Nico Verdoes & Koos Verloop, Plant and Animal Sciences Groups Wageningen UR, 2009.

URL:

http://edepot.wur.nl/50884