Open AccessInfluence of thickness and planting time on potato productivity and quality
Author(s) -
A. A. Vasiliev,
А. К. Горбунов
Publication year - 2021
Publication title -
agrarnyj naučnyj žurnal
Language(s) - English
Resource type - Journals
eISSN - 2587-9944
pISSN - 2313-8432
DOI - 10.28983/asj.y2021i2pp9-13
Subject(s) - sowing , photosynthetically active radiation , photosynthesis , ripening , yield (engineering) , agronomy , field experiment , horticulture , starch , biology , botany , food science , materials science , metallurgy
The article discusses the features of the formation of the leaf surface, photosynthetic potential and yield of tubers, depending on the timing and density of potato planting. The objective of our research was to study photosynthetic activity, yield and quality of potato tubers depending on the density and timing of planting. Field experiments were carried out in the forest-steppe zone of the Trans-Urals in 2014-2017 with potato varieties Rosara (early ripening) and Kuzovok (mid-ripening). The optimal combination of agricultural practices has been established to obtain the planned potato yields with high quality tubers - planting on May 12-15 (Kuzovok varieties according to the scheme 75x27 and 75x19 cm, and Rosara varieties - only 75x19 cm). The optimal planting period provides the greatest photosynthetic potential of potatoes with a thickened planting scheme (4.18-5.45 million m2/ha-days), which, due to the assimilation of 3.9 to 4.4% of photosynthetically active solar radiation, ensures the formation of a crop of tubers 40.2-42.8 t/ha. The fourth term for planting potatoes (June 5-12), reducing the FP by 12.6-21.9% depending on the variety, the PAR efficiency - by 28.4-30.1%, caused a decrease in yield by 6.6-7, 4 t/ha, tuber starch content - by 2.0-2.7% compared to planting on May 12-15. At the same time, the amount of nitrates in tubers increased by 1.93-2.22 times.