QUALITATIVE CHARACTERISTICS OF IRRIGATION WATER AND THEIR INFLUENCE ON TECHNOLOGICAL ASPECTS OF CULTIVATION OF CONTAINER PLANTING MATERIAL OF CONIFEROUS SPECIES

UDC 630*232.329.9

  • Nosnikov Vadim Valer’yevich − PhD (Agriculture), Associate Professor, Head of the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nosnikov@belstu.by

  • Selishcheva Oksana Aleksandrovna − PhD (Agriculture), assistant lecturer, the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: oksana_selishchava@mail.ru

DOI: https://doi.org/10.52065/2519-402X-2021-246-10-81–87

Key words: watering, water, acidity, electrical conductivity, Scots pine, European spruce.

For citation: Nosnikau V. V., Selishcheva O. A. Qualitative characteristics of irrigation water and their influence on technological aspects of cultivation of container planting material of coniferous species. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 2 (240), pp. 81–87 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2021-246-10-81–87.

Abstract

The irrigation operation takes an important place in the technological process of growing container seedlings. Along with the amount of water, such quality characteristics as acidity and electrical conductivity (EC) also play an important role. Analysis of the acidity of water used in a number of forestry institutions in Belarus showed that it ranges from 6.73 to 8.15. The EC value ranges from 194.5 to 1152.0 μS/cm, with the minimum value typical for an open water reservoir. To ensure optimal growth conditions, the water for irrigation should have an acidity value close to the optimum acidity of the substrate used to grow a particular species. At a higher pH value, the substrate deacidifies, which can cause a decrease in the growth processes of the planting material.

One way to regulate the acidity of the water is to add acid to it during watering. The experiments showed that both nitric and sulfuric acids effectively reduce the pH of water, but at the same time provide a significant increase in electrical conductivity, which can cause salinization of the substrate. In addition, to normalize the acidity of water, the use of acid must be constant, since a single application has a short-term effect.

From the point of view of the ratio of economic costs and the achieved result, the most optimal method for reducing the negative impact of irrigation water with high pH values may be an increase in the initial acidity of the substrate due to a decrease in the amount of introduced neutralizing material.

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References

  1. Sectoral program for the cultivation of container planting material in the organizations of the Ministry of Forestry of the Republic of Belarus for the period until 2020. Lesnoye i okhotnich’ye khozyaystvo [Forestry and hunting], 2014, no. 6, pp. 17–30 (In Russian).
  2. Kruk N. K. And experience, son of difficult mistakes… Lesnoye i okhotnich’ye khozyaystvo [Forestry and hunting], 2013, no. 10, pp. 4–7 (In Russian).
  3. Nosnikov V. V. Сontainer seedlings: pros and cons. Lesnoye i okhotnich’ye khozyaystvo [Forestry and hunting], 2018, no. 4, pp. 13–17 (In Russian).
  4. Zhigunov A. V. Planting material with a closed root system: myths and reality. Tezisy dokladov “Sozdaniye i ispol’zovaniye postoyannoy lesosemennoy bazy na selekcionnoy osnove, perspektivnye metody vyrashchivaniya posadochnogo materiala i opyt sozdaniya lesnykh kul’tur s zakrytoy kornevoy sistemoy” [Theses of reports “Creation and use of a permanent forest seed base on a selection basis, promising methods of growing planting material and the experience of creating forest plantations with a closed root system”]. Nizhniy Novgorod, 2005, pp. 13–16 (In Russian).
  5. Juntunen M., Rikala R. Fertilization practice in Finnish forest nurseries from the standpoint of environmental impact. New Forests. 2001, no. 21, pp. 141–158 (In English).
  6. Bobushkina S. V., Mochalov B. A. The influence of some environmental factors and technological methods on the growth and development of pine seedlings with a closed root system. Materialy Vseros. konf. s mezhdunarodnym uchastiyem “Sostoyaniye lesov i aktual’nyye problemy lesoupravleniya” [Materials of the All-Russian conference with international participation ”State of forests and topical problems of forest management”]. Khabarovsk, 2013, pp. 107–111 (In Russian).
  7. Heiskanen J. Irrigation regime affects water and aeration conditions in peat growth medium and the growth of containerized Scots pine seedlings. New Foresters. 1995, no. 9, pp. 181–195 (In English).
  8. Landis T. D., Tinus R. W., McDonald S. E., Barnett J. P. Seedling Nutrition and Irrigation. The Container Tree Nursery Manual. Agric. Handbk, 1984, vol. 4. Washington, DC: U.S. Department of Agriculture, Forest Service. 119 p.
  9. Fundamentals of container tree seedling production. St. Petersburg, Suonenjoki, St. Petersburg Forestry Research Institute, METLA Publ., 2011. 28 p.
  10. South B. D., Nadel L. R. Irrigation in pine nurseries. Reforesta, 2020, no. 10, pp. 40–83 (In English).
  11. Molchalov B. A., Bobushkina S. V. Cultivation of container planting material in the Arkhangelsk region. Vestnik MGUL [Bulletin of the Moscow State Forest University], 2012, no. 84, pp. 79–83 (In Russian).
  12. Nosnikov V. V. Experience of using and problematic issues of the technology of a closed root system in forest restoration in Belarus. Materialy XVII Mezhdunar. nauch.-tekhn. konf. “Aktual’nyye problemy razvitiya lesnogo kompleksa” [Materials of the XVII International Scientific and Technical Conference “Actual problems of the development of the forestry complex”]. Vologda, VoGU Publ., 2019, pp. 83–85 (In Russian).
  13. Kruk N. K., Nosnikov V. V., Rebko S. V. Current state, problems and prospects of forest reproduction in Belarus. Vidtvorennya lisiv ta lisova melioratsiya v Ukraini: vitoki, suchasnyy stan, vykliki s]yogodennya ta perspektyvy v umovakh antropotseny [Forest reproduction and forest reclamation in Ukraine: origins, current state, current challenges and prospects in the Anthropocene]. Kiev, Lira-K Publ., 2019, pp. 122–156 (In Ukrainian).
  14. Gosudarstvennyy vodnyy kadastr. Vodnyye resursy, ikh ispol’zovaniye i kachestvo vod (za 2018 god) [State water cadastre. Water resources, their use and water quality (for 2018)]. Minsk, Ministerstvo prirodnykh resursov i okhrany okruzhayushchey sredy Resp. Belarus’ Publ., 2019. 222 p.
  15. Szabla K., Pabian R. Szkółkarstwo kontenerowe. Warszawa, 2009. 250 p.
17.03.2021