STUDY OF SOIL DISEASES IN SEEDLING STAGE OF VEGETABLE SEED CROPS
MARIA CALIN 1, TINA OANA CRISTEA 1, SILVICA AMBARUS 1, CREOLA BREZEANU 1, PETRE MARIAN BREZEANU 1, MARIA PRISECARU 2, IULIANA BARBU 3, DIANA BARBU 3 1. Vegetable Research and Development Station Bacau, Calea Barladului, No. 220, Bacau, Romania, e-mail: sclbac@legumebac.ro;
2. âVasile Alecsandriâ, University of Bacau, Faculty of Science, Department of Biology, Marasesti Street, no. 157, Bacau, Romania, e-mail: prisecaru_maria@yahoo.com;
3. Farmacia Naturii, Strada George Bacovia 32, BacÄu, Romania, e-mail: iuliabarbu@farmacianaturii.ro.
During 2013 - 2014, greenhouse experiments were performed in Vegetable Research-Development Station Bacau - Romania, in order to evaluate the vegetable categories of multiplication at the soil-borne diseases attack in seedling stage. Experiments on round pepper (Creola), long pepper (Ionel) sweet pepper (Dariana Bac) and tomatoes (Unibac) were performed to compare the category: CA, CSD, PB, BS and C1 that presents soil-borne diseases attack. Experiments on Levisticum (Rarau) were performed to compare CA and C1 that presents soil-borne diseases attack. The attack on B and C1 generations at round pepper was between 0,3 - 0,7%. The plants of CA and CSD category after emergence were susceptible at soil pathogen attack (1,3 - 1,7%). The percentage of healthy plants was 98,3 - 99,7%. Long pepper - Ionel was tolerant to soil pathogens attack (CA - 0.3% CSD - 0.3%, PB - 0.1%, B - 0.1% C1 - 0). Sweet pepper showed a light susceptibility to soil pathogens attack after emergence: CA - 3.3% CSD - 3.3%, PB - 2.1% BS - 2.4% C1 - 2.1%. After transplanting in cell plastic trays the pathogen attack stopped. Lovage - Rarau presented a low attack of soil pathogens, behaving as a rustic species, resistant to low temperatures and soil pathogens attack. In both categories of multiplication the attack did not exceed 0.3%. The tomatoes due to low temperatures during emergence (8-20OC) had an uneven emergence, being infected with soil pathogens. There are differences between the attack depending on the category of multiplication: CA - 1,2%, CSD - 1,0%, PB - 0,5%, B - 0,7%, C1 - 1,0%.