@misc{orgprints5301,
           title = {Experimental farm Nagele },
             url = {http://orgprints.org/5301/},
        abstract = {The unit consists of four farming systems: 
- Bio-dynamic system with arable crops and field vegetables representing the organic farms in the northern and central clay areas of The Netherlands (22 ha) 
- Bio-intensive system with field vegetables, representing the smaller organic farms (12 ha) 
- Bio-diverse system with optimal use of biodiversity to control diseases and plagues. (12 ha) 
- Integrated system with arable crops representing the conventional farms in the northern and central clay areas (24 ha)
}
}