Presents the results of studies on the effect of growth promoters on yield and biochemical cosist of carrots. The obtained results show that the change in the value of crop roots were of a different character. In the years studies have observed differences in yield depending on the rate of growth stimulants. The analysis of marketable carrots yields in 2006-2008 shows that the highest rate recorded in 2007, while in the variant with processing growth stimulator Ivin with standard of 2,0 mg/l of water for yield was 62,3 t/ha, and processing growth stimulator of Emistim C with a rate of 0,5 ml/l of water – 62,0 t/ha, respectively.

The lowest yield recorded in 2006. So, in 2006, in variants, where a growth stimulant Ivin was used in proportion 2,5 mg/l of water, the yield of roots was 58,4 tons/ha, and at the proportion of 1,5 mg/l of water the harvest was 59,9 t/ha the Best option was using a growth stimulant Ivin in the standard of 2,0 mg/l of water at the same time the yield of carrots was 60,7 t/ha.

This primarily depends on climatic conditions, namely with rainfall during the vegetation period. The yield of carrots in 2008 was at the level of 2007.

The average for 2006-2008 years the lowest yield on norms carrot processing was when growth stimulator Ivin used in the proportion of 2,5 mg/l of water with soaking in the water one day, the yield was 58,9 t/ha and in the proportion of 1,5 mg/l – the yield was 59,3 t/ha. Although compared with controlled ones these yields of 1,5 t/ha and 1,9 t/ha were higher. Then, as in the variant with normal use of growth stimulator Ivin in proportion 2,0 mg/l of water, with soaking in the water one day, the yield of root crops is 61,4 t/ha, which is higher than the controlled rate at 4.0 t/ha.

Similar performance was observed from the processing of carrot seeds with Emistim C. The highest yield of roots observed in the variant of seeds treatment with Emistim C according the rate of 0,5 ml/l of water with soaking in the water during eight hours, on average for three years is 61,7 t/ha, which exceeds the controlled rate 4,3 t/ha.

While researching growth stimulators in the processing carrot seeds, was found that the compaund of the main biochemical parameters of commercial carrots products differs over years, and depends on the norms of seed treatment with stimulants.

We established certain trends in the formation of carotene consist in the roots, which depends on seeds treatment with growth stimulators, weather conditions during the year of cultivation and the impact of various factors that have been studied.

In different years of growing plants, we have not noticed significant changes in the consist of biochemical parameters in carrot, but the seed treatment with growth stimulants was different. So, from seed treatment with growth stimulator Ivin in the standard of 2,0 mg/l. of water by soaking in the water during the day, the consist of the dry material of the average for three years is 14,9 percent, compared with the controlled rate 0,7% was higher. In this variant, the high content of carotene is 17,2 mg/100 g of wet weight and sugar to 8,0%, respectively, which exceeds the controlled variant rate. From seed treatment with growth stimulator Emistim C in the variant with normal seed treatment with 0,5 ml/l of water by soaking in the within 8 hours the highest consist of dry material was over three years on average 14,7%, carotene 16,8 mg/100g wet weight and mass fraction of sugar fluctuated in the range of 7,8 to 8,1%.

So, the highest compound of carotene, sugars in dry material was observed in the roots by treatment with plant growth stimulants Ivin – 2,0 mg/l of water by soaking in the water within 24 hours, Emistim C – 0,5 ml/l of water by soaking in the water within 8 hours. The maximum compound of biochemical indicators were formed in a more favorable 2007.

Experimental studies have established that growth factors affect the yield and biochemical compound of carrots.

Key words: carrot, growth stimulants, yield, quality.