icfar: PG1

LOCATION: Papiano, Perugia, Italy (42°57'25'' N, 12°22'36'' E) - See map
RU: Università degli Studi di PERUGIA- Dipartimento di SCIENZE AGRARIE E AMBIENTALI
START-END YEARS: 1971 – on going
CROP TYPE: Rotation with wheat, maize, legume crops (field pea/chickpea), grain sorghum, sugarbeet and sunflower
FACTORS: Rotation, management of soil residues, mineral fertilisation

This experimental research study  was set up to compare different cropping systems, resulting from the factorial combination of 2 different types of management of crop residues and several types of crop rotations. The management of crop residues is performed as follows: (1) after harvest, crop residues are removed from the soil; (2) at ploughing, crop residues are buried into the soil, together with 10 kg N per ton (dry matter) of residues, in order to support the humification process. The rotation treatments are: (1) three continuous winter-wheat cropping systems, where wheat is fertilised with 3 increasing N rates (150 kg N/ha, "standard rate”, 200 kg/ha and 250 kg/ha); (2) five maize/wheat rotations of different length, i.e. maize-wheat, maize-wheat-wheat, maize-wheat-wheat-wheat, maize-wheat-wheat-wheat-wheat and maize-wheat-wheat-wheat-wheat-wheat; (3) four types of 2-year rotations wherein wheat is in rotation with grain legumes (peas or chickpea), sorghum, sugar beet, or sunflower. The experimental design is a split-plot with three replicates and it is planned so that all crops of each rotation are contemporarily present in each year. The aim of this experiment is to obtain a long term assessment of  trends for (1) soil fertility; (2) crop yield level and variability across years; (3) carbon balance evaluation; (4) N balance on the environment. To this aim, the following measurements and determinations have been performed throughout the duration of the experiment, on a more or less regular schedule: (1) crops biomass and yield; (2) crop residues biomass; (3) crop and residues organic N content; (4) soil organic and mineral N content; (5) soil organic C content.

SITE MANAGER CONTACT: Prof. Francesco Tei, email: francesco.tei@unipg.it;

A.A. Bianchi e M.Guiducci e U. Bonciarelli (1994) Effect of crop rotation and nitrogen fertilization on PAR absorption and radiation use efficiency of winter bread wheat. 3rd Congress of the European Society for Agronomy, Abano (PD) 18-22 September 1994, 70-71.
P. Perucci, U. Bonciarelli, R. Santilocchi, A.A. Bianchi (1997) Effect of rotation, nitrogen fertilization and management of crop residues on some chemical and biochemical characteristics of soil. Biology and Fertility of Soils, 24, 311-316.
U. Bonciarelli, R. Santilocchi, A.A. Bianchi  (2000) Effetti dell’avvicendamento, della concimazione azotata e della gestione dei residui colturali sulla produttività del frumento tenero. Rivista di Agronomia, 4, 464-471.

Copyleft licence - ICFAR project