Table Carrot Yields after Using Humic Preparations

The present article analyzes the humic preparation effect on the yields of table carrot hybrids. The experiments have been carried out on sod-podzolic medium loamy soil in the experimental field of the Velikie Luki State Agricultural Academy in the period of 2022-2023. It has been established that the Gumat + 7 and Gidrogumin humic preparations increase the field germination of the Anastasia F1, Baltimor F1, Kamaran F1 and Kanada F1 carrot hybrids by 10.0-15.0% after seed treatment. Seed treatment and twofold foliar plant fertilization with the preparations have resulted in shortening of the interphase “from germination to the beginning of root crop formation” period by 2-6 days. When treated with the Gidrogumin preparation, the Baltimor F1 hybrid has formed roots (a bundle product) 6 days earlier and entered the industrial ripeness phase 9 days earlier compared to the control group. Biometric measurements of carrot root crops have showed that treatment with the Gumat+7 and Gidrogumin preparations has effected in increasing of length by 1.4-5.6%, diameter by 7.5-21.0% and weight by 3.4-13.0%. The greatest increase in root length (+5.6%), in diameter (+21.0%) and in weight (13.0%) has been achieved after treating the Baltimor F1 hybrid with the Gidrogumin preparation. Seed treatment with the Gumat +7 and Gydrogumin as well as a twofold foliar plant fertilization have increased the yield of carrot hybrids from 35.4 to 43.6 t/ha. The carrot hybrid yield has increased and reached 1.2 -7.2 t/ha as compared with the control group. The highest yield of 43.6 t/ha (+20%) and the share of standard roots (93.6%) have been obtained after seed treatment with the Gydrogumin preparation and a twofold foliar plant fertilization of Baltimor F1 table carrot hybrid. Application of the Gumat+7 preparation has resulted in yield increase of the Anastasia F1, Baltimor F1, Kamaran F1 and Kanada F1 hybrids by 3.5-6.5%. After using humic preparations, the dry matter content has increased by 0.4-1.3% in table carrot root hybrids. When treated with the Gidrogumin preparation, the sugar amount have increased by 1.0 and 1.5% in the Kamaran F1 and Kanada F1 hybrids. The nitrate content in the products has not exceeded the maximum permissible level. After using the Gidrogumin preparation, the amount of nitrates in the Baltimor F1 table carrot hybrid has decreased by 41%.