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The studied variety and hybrid, as well as sowing dates influenced the duration of interphase periods of table carrot plants. The interphase period "sowing – mass seedlings" was the longest during the sowing period of the third decade 03: in the variety Shantаne KL – 36 days, which is 3 days longer than the control and 12 days – from the sowing period of the third decade 04, in the hybrid Bolivar F1 – 34 days, which is 3 days longer than the control and 12 days longer than the sowing period III decade 04. The period of root formation – technical maturity lasted from 80 to 92 days. It was shorter during the sowing period of the third decade 04: in the variety Shantane KL it is 12 days shorter than the control, in the hybrid Bolivar F1 it is 8 days shorter than the control. The longest this interphase period was in table carrot plants sown during the sowing period of the third decade 03, in the variety Shantane KL – 92 days, in the hybrid Bolivar F1 – 89 days. Plants had the longest vegetation period during the sowing period of the third decade 03: in the cultivar Shantane KL – 126 days, in the hybrid Bolivar F1 – 124 days, which is 4 and 3 days longer than the control variants. The highest yield of table carrots was obtained during the sowing period of the third decade of March: in the variety Shantane KL – 41.4 t / ha, in the hybrid Bolivar F1 – 47.1 t / ha, where the increase relative to controls was 4.9 and 5.2 t / ha, respectively. The significance of this difference was confirmed by the results of analysis of variance. The studied variety and hybrid were characterized by high marketability. In general, the marketability in the experiment was influenced by varietal characteristics, as well as the timing of sowing of carrot seeds. The marketability of table carrots, depending on the variant of the experiment was 77.2 - 88.0%. The highest marketability indicator was characterized by the roots of the Bolivar F1 hybrid during the sowing period of the third decade of March – 88.0%, which is 2.7% higher than the control. According to the results of biometric measurements, the influence of sowing dates on the biometric parameters of table carrot roots was revealed. The main indicator that affects the size of the crop is the weight of the root crop. The highest mass of root crops was recorded in plants sown during the sowing period of the third decade of March: in the variety Shantane KL – 122 g in the hybrid Bolivar F1 – 128 g, which is more than the control variants by 23.7 and 25.5 g, respectively. In terms of root diameter, this indicator was the largest during the sowing period of the third decade of March: in the cultivar Shantane KL – 6.2 cm in the hybrid Bolivar F1 – 6.6 cm, which is 0.4 cm higher than the control variants, respectively. According to average data, the greatest length of root crops was observed during the sowing period of the third decade of March, where the increase relative to control was 0.2 - 0.4 cm, respectively.
The studied variety and hybrid, as well as sowing dates influenced the duration of interphase periods of table carrot plants. The interphase period "sowing – mass seedlings" was the longest during the sowing period of the third decade 03: in the variety Shantаne KL – 36 days, which is 3 days longer than the control and 12 days – from the sowing period of the third decade 04, in the hybrid Bolivar F1 – 34 days, which is 3 days longer than the control and 12 days longer than the sowing period III decade 04. The period of root formation – technical maturity lasted from 80 to 92 days. It was shorter during the sowing period of the third decade 04: in the variety Shantane KL it is 12 days shorter than the control, in the hybrid Bolivar F1 it is 8 days shorter than the control. The longest this interphase period was in table carrot plants sown during the sowing period of the third decade 03, in the variety Shantane KL – 92 days, in the hybrid Bolivar F1 – 89 days. Plants had the longest vegetation period during the sowing period of the third decade 03: in the cultivar Shantane KL – 126 days, in the hybrid Bolivar F1 – 124 days, which is 4 and 3 days longer than the control variants. The highest yield of table carrots was obtained during the sowing period of the third decade of March: in the variety Shantane KL – 41.4 t / ha, in the hybrid Bolivar F1 – 47.1 t / ha, where the increase relative to controls was 4.9 and 5.2 t / ha, respectively. The significance of this difference was confirmed by the results of analysis of variance. The studied variety and hybrid were characterized by high marketability. In general, the marketability in the experiment was influenced by varietal characteristics, as well as the timing of sowing of carrot seeds. The marketability of table carrots, depending on the variant of the experiment was 77.2 - 88.0%. The highest marketability indicator was characterized by the roots of the Bolivar F1 hybrid during the sowing period of the third decade of March – 88.0%, which is 2.7% higher than the control. According to the results of biometric measurements, the influence of sowing dates on the biometric parameters of table carrot roots was revealed. The main indicator that affects the size of the crop is the weight of the root crop. The highest mass of root crops was recorded in plants sown during the sowing period of the third decade of March: in the variety Shantane KL – 122 g in the hybrid Bolivar F1 – 128 g, which is more than the control variants by 23.7 and 25.5 g, respectively. In terms of root diameter, this indicator was the largest during the sowing period of the third decade of March: in the cultivar Shantane KL – 6.2 cm in the hybrid Bolivar F1 – 6.6 cm, which is 0.4 cm higher than the control variants, respectively. According to average data, the greatest length of root crops was observed during the sowing period of the third decade of March, where the increase relative to control was 0.2 - 0.4 cm, respectively.
Data on the cultivation of carrot varieties and hybrids in open ground conditions with biometric indicators, yield and quality biochemical values are presented. The research was conducted in 2023-2024 using carrot varieties: Karlena, Chantane Red Core, Long Red, Yaskrava, Campino and hybrids Bolivar F1, Abaco F1, Charisma F1, Canada F1. Karlena plants and plants of the hybrid Abaco F1 served as controls among the mordant varieties. Biometric indicators of carrots depended on the varietal characteristics of the plant. The largest mass of the root crop in the open ground was established for the cultivation of the Campina carrot variety, where its value was 210 g. At the same time, if proper technology is observed in the open ground, the root crop of the Karlena variety can increase to 21 cm, and the diameter of the root crop in the Shantane Red Core and Campina varieties increases by 18 and 20%, by 1.0-1.1 times for Long Red and Yaskrava varieties. The height of the above-ground part of the plant and the height of the plant with the root crop exceed the value of the Karlena variety by 1.8-2 times and 1.3-1.5 times, respectively. Among the hybrids, the Bolivar F1 hybrid was characterized by the largest root mass with a value of 175 g, the longest root was obtained from the Abaco F1 hybrid. The researched varieties are divided into two groups by yield: high-yielding and medium-yielding varieties. The first group includes the Yaskrava and Campina varieties, in which the yield is 75-83 t/ha. Chantane Red Core and Long Red varieties belong to the second group of varieties, where the yield increases by only 18% for Shantane Red Core and 31% for Long Red. As a result of growing the Bolivar F1 hybrid, the yield increases by 3 t/ha. The most dry matter, crude protein and sugar can be obtained by growing the Karlena variety - 17.55%, 2.24% and 10.11%, respectively, and the Dovga red and Yaskrava varieties with lower indicators. Among the carrot hybrids, the Abaco F1 hybrid is characterized by the highest value of dry matter - 14.15% and protein content of 2.18%. At the same time, the roots of the hybrids Abaco F1 and Canada F1 are characterized by a high sugar content, where the value of sugar was 7.87 and 7.92%, respectively, and ash - hybrids Abaco F1 and Charisma F1.
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