Influence of sowing periods on the dynamics of forming of leaf surface and root weight of parsnip (Pastinaca Sativa L.)

V. V. Khareba, O. O. Komar

Анотація


The main task of horticulture is supplying population with fresh products at the expense of increasing of production and assortment enhancing. Parsnip has less production volume than other vegetables but it is a unique source of vitamins, freely soluble mineral salts and essentials oils. All this components regulate metabolism and are highly important all the year. Necessity of studying the wide range of sowing periods (1/04-10/06) can be explained by long sowing period and necessity of establishing permissible sowing periods which do not cause crop capacity. Urgency of specification of sowing periods of parsnip in certain soil and climate conditions is caused by appearance of new varieties of parsnip, concentration of production and increasing of sown areas.

The objective is to identify the influence of sowing period on the dynamics of forming of root weight and leaf surface of parsnip.

The research was conducted in 2015-2016 on the basis of experimental field at the Department of Vegetable-Growing in SRD “Plodoovochevyi Sad” of NULES of Ukraine on parsnip (Pastinaca sativa L.) (sort Stymul).

The results of research showed that maximum crop productivity depends on growing technologies and sowing periods which will provide forming the optimal area of leaves and duration of photosynthetic activity. Later sowing periods of parsnip cause reducing of growth and plant development. In turn it directly influences on increasing of root weight.

Ключові слова


Pastinaca sativa L., parsnip, roots, sowing periods, surface of leaves

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Посилання


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