The cultivation of coriander sativum result in longer period of seed sprouting (15 – 20 days) and uneven germination in unstable temperature conditions in spring. It is therefore important to determine the optimal time of sowing that increases the energy of seeds sprouting and their simultaneous germination.

The sowing time affected the germination of coriander seed and the highest results has been marked on 15 April of Oksanit variety – 91,3 %. These technological techniques contributed to a better survival of coriander plants (85,4 – 93,7 %).

The results of the study show that the sowing time had an influence on sprouting ability of coriander plants. The longest period of sprouting of seed (to 20 days) has been marked at the early sowing time (5 April) and the accelerated sprouting of seeds in the 2 – 3 day has been marked at the following sowing time (15 and 25 April).

During the vegetation of coriander sativum phenological observation of plant growth and development was done.

It has been established that the longest period before the appearance of full shoots (24 days) was observed in the variety of coriander Caribe at the first sowing time. The following sowing time (in the second and third decade of April) accelerated the phenological stage of coriander varieties. The shortest period of budding was observed in variety Oksanit that had been planted on 25 April – 48 days and the longest period of variety Caribe was 68 days under the early sowing timeThere was noted later beginning of the phase of budding of variety Nectar than the varieties Oksanit and Caribe (7 – 10 and 2 – 3 days, respectively) despite an earlier sprouting. The smallest difference in the flowering time was observed in varieties of coriander between the second (15.04) and the third (25.04) sowing time (4 – 3 days).

The intensity of plant growth of coriander before the phase of stalkforming was slow (2 – 3 cm per decade), but it significantly increased during the period after stalkforming (6 – 8 cm) and especially before flowering (8 – 10 cm per decade).

The linear growth of coriander sativum slowed down after flowering phase that ensured uniform redistribution of nutritive material from vegetative to henerative parts. The greatest height of plant was observed at sowing time on 5 April for variety Oksanit – 67.3 cm.

has been marked The trend of general growth and individual parts growth (stems, leaves, inflorescence, fruits) was observed during coriander sativum growth and development that changed the value of the aerial parts of plant.

It has been stated that in the budding phase of variety Oksanit, the leaf of leaves was 49 % of the total mass of the plants at the early sowing time, while in the phase of fruit formation that rate had maximum value at sowing time on 15 April (47 %). The opposite tendency was observed in the change of mass gain stems that carry generative organs. In the budding phase, their mass was the highest (63 %) at sowing time on 15 April and in the phase of fruitformation was 43 % at the early sowing time.

In the phase of fruitformation the total mass of the plants grew. The proportion of fruit on plants was the highest under the early sowing time – 18 %.

Productivity of fruits (seeds) is the basic measure of the economic value of the variety. The most favorable condition for the formation of seed production of coriander variety Oksanit is created under the sowing time on 5 April – 109 g/m², Nectar – 109 g/m² (15 April), Caribe – 94 g/m² (25 April).

Key words: coriander, sowing, growth and development, phenological phases, varieties, yield.