Authors names: Florin Nețu Changes in currant crown management Authors names: Florin Nețu Coordinator Professor: Assoc. Prof. Dr. Adrian Asănică International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Introduction In the last couple of decades, currant has been one of the most used fruit for its properties , due to its high content of vitamins, micronutrients antioxidants, anthocyanin. Because of this properties when eating currants, we are giving our bodies a natural mechanism to eliminate the free radicals that are the cause of many diseases that cause degeneration and aging of our body. International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
vitamin C antioxidants flavonoids micronutrients anthocyanin
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Materials and methods The experiment was set up in the Didactic and Experimental Field of the University of Agronomic Sciences and Veterinary Medicine of Bucharest. The biological material of black and red currant was 6 years old plants of ‘Ellite’ and ‘Tinker’ variety grown as multi-stem shrub. International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
There are 3 rows with distances between the rows : 1.2 m red Row 2 black Row 3 b + r There are 3 rows with distances between the rows : 1.2 m Distances between plants : 0.8 m Currant experimental draft International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Bush Cordons International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Trident Ver. axe International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
4 and 5 cordons 6 cordons Bush International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Results and discussions Difference of growth vigor of ‘Elite’ and ‘Tinker’ varieties based on the training system Variety Number of branches/plant Average height (cm) Difference 2016 2017 Elite 1 87 126 39 Tinker 138 156 18 Average 112.5 141 28.5 2 88 105 17 127 162 35 107.5 134 26 3 111 108 -3 114 129 15 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of branches/plant Variety Number of branches/plant Average height (cm) Difference Average 112.5 118 6 Elite 4 112 Tinker 135 154 19 Average 123.5 136 12.5 5 123 108 -15 166 31 129 137 8 113 133 21 13 bush 107 -22 153 141 -4.5 Red current 109 Black current 134 155 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of branches/plant Variety Number of branches/plant Average diameter (mm) Difference 2016 2017 Elite 1 14.24 15.90 1.66 Tinker 19.99 24.35 4.36 Average 17.11 20.13 3.02 2 13.73 14.09 0.36 19.54 20.54 16.63 17.32 0.69 3 15.95 17.36 1.41 20.81 23.49 2.68 18.38 20.43 2.05 4 19.09 19.90 0.81 20.49 22.42 1.93 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of branches/plant Variety Number of branches/plant Average diameter (mm) Difference 2016 2017 Average 19.79 21.16 1.37 Elite 5 18.36 19.92 1.56 Tinker 20.07 23.14 3.07 19.21 21.53 2.32 6 15.60 19.88 4.28 15.71 21.45 5.74 15.65 20.67 5.02 bush 17.15 18.70 1.55 19.59 21.92 2.33 Media 18.37 20.31 1.94 Red currant 17.88 17.96 0.008 Black currant 16.82 22.47 5.65 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Growing particularities under the influence of the training system Variety Number of branches/plant Average number of spigots in 2017 Average number of annual branches/plant Number of buds set/plant Total annual growth of the plants (cm) 2016 2017 Elite 1 2 11 4 6 347 638 Tinker 8 16 20 5 603 948 Average 14 12 475 793 3 13 9 357 562 21 25 684 1308 17 521 935 23 7 74 28 421 1474 34 72 1011 1886 29 73 716 1680 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of branches/plant Average number of spigots in 2017 Variety Number of branches/plant Average number of spigots in 2017 Average number of annual branches/plant Number of buds set/plant Total annual growth of the plants (cm) 2016 2017 Elite 4 21 30 14 90 52 715 1807 Tinker 20 58 5 74 1498 2022 Average 44 9 82 33 1107 1914 23 65 45 972 1074 66 10 40 18 1708 3650 59 53 32 1340 2362 6 35 24 351 1600 15 34 745 2153 7 42 16 548 1877 bush 51 36 84 911 1112 17 73 1610 2713 55 27 79 28 1261 1912 Red currant 31 50 29 582 1181 Black currant 41 11 1123 2097 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of cordons/ plant Number of inflorescence/plant Variety Number of cordons/ plant Number of inflorescence/plant Average number of fruits/ infl Average weight of a Average production/ plant (g) Average production/ cordon berry (g) Elite 1 17 6.8 0.6927 85 Tinker 15 6.1 0.7574 318 Average 16 6.45 0.73 202 2 6 3.62 0.9865 8 28 6.2 1.0109 576 288 4.91 1.00 296 148 3 61.67 10 0.788 1120 373 44.33 8.6 0.8628 744 248 53 9.3 0.83 932 311 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Number of cordons/ plant Number of inflorescence/plant Variety Number of cordons/ plant Number of inflorescence/plant Average number of fruits/ infl Average weight of a berry (g) Average production/ plant (g) Average production/ cordon Elite 4 89 10.87 1.0178 2297 Tinker 65.67 8.67 0.8938 1260 315 Average 77.34 9.77 0.96 1778 445 5 97.33 9.75 0.7186 2869 574 72.67 7.3 0.8551 1739 348 85 8.525 0.79 2304 461 6 52 7.55 0.9967 400 67 44.5 6.97 0.7551 374 62 48.25 7.26 0.88 387 65 bush 100.25 8.05 0.724 4385 439 97.93 7.25 0.8321 2301 230 99.09 7.65 0.78 3343 334 Red currant 60.46 8.09 0.85 1596 302.8 Black currant 52.59 1044 258.4 International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania
Conclusions and recommendations Tallest plants correspond to Vertical axe then Bi baum and the highest increase of cordon thickness to 6 cordons The highest number and length of annual growths was remarked for 5 cordons training system Highest average numbers of annual brenches per plant was for bush system Bigger fruits weight were picked up from Bi baum, followed by 4 cordons system The bush training system remains the most productive, but the size of a berry it’s smaller than any other training system, except Vertical axe The vertical systems are very suited for convenient manual picking, fruits quality and easy pruning interventions International Student Symposium "Hortus Academicus“ April 27, 2018 - Bucharest, Romania