Competition Indices and Economic Benefits of Winter Wheat and Winter Peas in Mixed Cropping
Marianna Vályi-Nagy,
István Kristó,
Melinda Tar,
Attila Rácz,
Lajos Szentpéteri,
Katalin Irmes,
Gergő Péter Kovács,
Márta Ladányi
Affiliations
Marianna Vályi-Nagy
Department of Agronomy, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Páter Károly út 1, 2100 Gödöllő, Hungary
István Kristó
Cereal Research Non-Profit Ltd., Alsó-kikötő sor 9, 6726 Szeged, Hungary
Melinda Tar
Institute of Plant Sciences and Environmental Protection, Faculty of Agriculture, University of Szeged, Andrássy út 15, 6800 Hódmezővásárhely, Hungary
Attila Rácz
Department of Agronomy, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Páter Károly út 1, 2100 Gödöllő, Hungary
Lajos Szentpéteri
Department of Agronomy, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Páter Károly út 1, 2100 Gödöllő, Hungary
Katalin Irmes
Department of Agronomy, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Páter Károly út 1, 2100 Gödöllő, Hungary
Gergő Péter Kovács
Department of Agronomy, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Páter Károly út 1, 2100 Gödöllő, Hungary
Márta Ladányi
Department of Applied Statistics, Institute of Mathematics and Basic Science, Hungarian University of Agriculture and Life Sciences, Villányi út 29-43, 1118 Budapest, Hungary
Intensive wheat production, which produces high yields through the excessive use of chemical inputs and non-renewable energy, is unsustainable in the long term. Innovative cultivation methods such as intercropping can address emerging challenges. This kind of plant association offers the possibility of achieving a balanced yield with the use of a natural nitrogen source. An experiment was conducted for three growing seasons (2020/2021, 2021/2022, 2022/2023) with a combination of three winter wheat varieties (GK Szilárd, Cellule, GK Csillag) and a winter pea variety (Aviron) in three sowing densities to determine the species interaction and the economics of mixed plots. The intercropping systems were evaluated in terms of the land equivalent ratio (LER), aggressivity (A), competitive ratio CR), actual yield loss (AYL), monetary advantage index (MAI), and intercropping advantage (IA). In almost all mixtures, the values of partial A, CR, and AYL indicated that wheat was more competitive than peas due to the overconcentration of mixtures. For MAI, the mixture Cellule/Aviron 75:50 was more profitable than the others in the first two years. Our results draw attention to the influence of the seeding rate, which can contribute to new directions for current research.
