Role of Irrigation for Field Crops Entomocoenoses Stabilization in Irrigated Agricultural Landscapes of the Lower Volga Region
- 10.2991/aer.k.200202.038How to use a DOI?
- entomocomplexes, irrigation, microclimate, agrolandscapes, phytophages, entomophages
the article presents materials of long-term studies (1988 – 2018) devoted to solving regulation issues of phytosanitary situation in irrigated agrocenoses. The paper outlines the results of studying species abundance and number of insects, patterns of their change under the influence of irrigation in the Lower Volga region. Authors confirmed the formation of mesophytic microclimate parameters under the influence of irrigation, which is one of the leading factors determining the increase in biodiversity of entomocomplexes of irrigated agrocenoses due to the increase in species abundance and number of insects: mesophiles and hygrophilas. The study also shows an increase in species diversity and number of mesophiles and hygrophilas in irrigated agricultural landscapes due to the appearance of additional microhabitats (canals, storage ponds, spillways, etc.). The paper reveals the formation mechanism of polydominant entomological communities in irrigated conditions, which increase the balance of agroecosystem, including optimizing its trophic structure. A changing ecological situation in irrigated agricultural landscapes results in plants cultivation with optimized physiological parameters; in the irrigation conditions, biological features of harmful and beneficial insects development change as well. It is noted that in irrigation conditions, due to a more favorable ratio between pests and beneficial entomofauna, entomocomplexes’ self-regulating ability increases. At the same time, the pesticide load on irrigated agricultural landscapes is reduced by 40–50 %.
- © 2020, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Viktor Melikhov AU - Olga Komarova AU - Alexey Novikov AU - Elena Ivantsova AU - Evgeny Komarov PY - 2020 DA - 2020/02/08 TI - Role of Irrigation for Field Crops Entomocoenoses Stabilization in Irrigated Agricultural Landscapes of the Lower Volga Region BT - Proceedings of the IV International Scientific and Practical Conference 'Anthropogenic Transformation of Geospace: Nature, Economy, Society' (ATG 2019) PB - Atlantis Press SP - 187 EP - 192 SN - 2352-5401 UR - https://doi.org/10.2991/aer.k.200202.038 DO - 10.2991/aer.k.200202.038 ID - Melikhov2020 ER -