LTM_AC_crop: dataset of Long term monitoring of crop yield in young arable alley cropping systems in Belgium

Dataset including results from crop yield and crop quality measurements obtained on a set of six alley cropping fields in Belgium during the first decade after their establishment. Sampled crops include maize, wheat, barley and potato. Measurements started in 2015 and are at present still continued. A transect approach is used in wich crop production is monitored at fixed distances from the trees (2m, 5m and 12m). Ton dry matter is assessed as well as crop specific quality parameters (a.o. for winter cereals: protein content & thousend kernel weight, silage maize: protein content & digestability, potato: under water weight and diameter fractions). For a detailed description of methodologies used see also: Pardon et al. (2018) (https://doi.org/10.1016/j.agsy.2018.08.008).