PHOTOSYNTHETIC ACTIVITY OF POTATO PLANTS DEPENDING ON TECHNOLOGICAL GROWING METHODS
Journal Title: Наукові доповіді НУБіП України - Year 2017, Vol 6, Issue 6
Abstract
It has been studied the influence of elements of intensive potato cultivation technology, in particular, the influence of modern varieties on the ripeness of potato varieties, terms of seeding and depth of tubers planting on the photosynthetic activity of potato plants under the conditions of the Right Bank Forest-steppe of Ukraine. It has been found that the fastest rate of formation of leaf surface in all the years of our research in the early growing season occurred in the early-ripe varieties Dyvo, Legend and Malynska white, slower in late-ripe varieties Oksamyt, Alladin and Dar. In later periods of vegetation, the growth rate was determined not only by the group of ripeness of the variety, but also by the terms of planting and the depth of tubers planting. The formation of the size of the photosynthetic potential has a decisive influence not on the biological characteristics of the variety, but on the conditions of plant growth and development. On average, over six years of research in the second-year plan of 03-05.05, with a depth of 6 to 8 cm of tubers, the maximum value of photosynthetic potential was 2.2 million m2/ha in the Legend variety. The formation of the value of this indicator of plant productivity had a greater impact on the terms of seeding and the depth of tubers planting than on the biological characteristics of the variety. Thus, the smallest photosynthetic potential is noted in variants of the third sowing date (13-15.05) with a depth of wrapping of 10-12 cm. Also, it should be noted that the maximum values of net productivity of photosynthesis in potato plants 8.3 g/m2 per day were observed in a variety Slavyanka first term of planting 23-25.04 with the depth of tubers wrapping 6-8 cm. In other studied variants, the net productivity of photosynthesis amounted to 6.9-8.1 g/m² per day.
Authors and Affiliations
R Mialkovskyi
Keywords
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