Scientifically Based Regime of Drip Irrigation of Plum Seedlings on Soddy-Podzolic Soils

Autor: N. N. Dubenok, A. V. Lebedev, A. V. Gemonov
Rok vydání: 2021
Předmět:
Zdroj: Russian Agricultural Sciences. 47:450-454
ISSN: 1934-8037
1068-3674
DOI: 10.3103/s1068367421050037
Popis: Problems of the rational use of water resources are of particular relevance now due to frequent use of resource-saving technologies in nursery gardens. Drip irrigation is considered one of the most promising methods to create favorable conditions for plant growth. The aim of this study is to develop a scientifically substantiated regime of drip irrigation of plum seedlings on soddy-podzolic soils to obtain high-quality planting material. A two-factor field experiment was performed in spring 2018. The factors analyzed included: (1) the drip irrigation regime (maintaining of the moisture content in the root zone in the ranges of 60–80, 70–90, and 80–100% of the field capacity) and (2) plum variety (Mashen’ka and Utro) engrafted on cherry plum stock. Drip irrigation resulted in uniform moistening of the root zone and saved irrigation water to two to three times as compared to sprinkling. The main portion of the total water amount consumed by seedlings in irrigated variants of the experiment consisted of irrigation water (from 55 to 67%) and atmospheric precipitation (from 14 to 29%). Biometric parameters (stem diameter, height, and leaf area) of 3-year-old seedlings grown under drip irrigation were 1.2–1.5 times greater as compared to seedlings in the control variant without watering. It is recommended to use the irrigation regime with maintaining soil moisture in the range of 80–100% of the field capacity for the rational use of irrigation water and for cultivation of high-quality plum planting material in the nursery. In the variant with maintaining soil moisture in the range of 70–90% of the field capacity, the amount of standard seedlings was by 1–2% smaller as compared to the variant with moisture content of 80–100% of the field capacity, and the irrigation rate is decreased by 59–206 m3/ha depending on conditions of the year.
Databáze: OpenAIRE
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