The Results of the Research on Four Pesticides Effectiveness for Scotch Pine Seedlings Protection from Damping-off Agents

T.M. Cherkis, A.A. Mоstepaniuk

Abstract


Coniferous forests on the left-bank territory of forest-steppe zone which are formed mostly by pine tree plantations cover over 33 per cent of the forest area. Therefore the need of healthy planting constantly exists as real harm to forestry enterprises is caused by damping-off. In the study the efficiency of such pesticides as Antal, Inshur Perform, Kinto Duo and Junta Quadro was tested in a greenhouse of the Southern area of Kharkiv Forest Investigation. The seeds of pine soared in distilled water served as a control, those processed by Fundazol served as a standard. The efficiency of pesticides was determined according to the following indexes: growing, mortality, survival of the seedlings and biological and agricultural efficiency. We also studied the biometrical factors such as hight and thickness of the root and the size of the phytomass. The study results are as follows. Seeds processing with the pesticides such as Antal, Inshur Perform, Kinto Duo and Junta Quadro better promoted growing. The control growing was about 46 per cent while the standard one was about 83 per cent. Better control results comparing with standard ones were observed when Inshur Perform and Junta Quadro (under the condition of the increased doze) were used. Mortality of the seedlings caused by the damping-off agents was insignificant and ranged from 0.6 to 16.4 per cent. The standard result was 11.8 per cent. Seedling mortality comparing with the control was lower in all the variants of the experiment with the exception of Kinto Duo and Yunta Quadro. Furthermore, survival of the Scotch pine seedlings under the influence of the pesticides was significantly higher comparing with the control in all the cases of the investigation with the exception of Yunta Quadro (all dozes). Survival of the seedlings in the experimental cases was either higher or the level of the standard case. The significance of this difference is proved statistically in the case with Kinto Duo. Under the influence of pesticides the Scotch pine seedlings had a better developed root system and a higher above ground part. The biomass of the grown seedlings also significantly exceeded the control and standard indexes. Thus, the perspective for protection of pine tree seedlings proved to be Antal, Inshur Perform, Kinto Duo and Junta Kvadro. Thus we recommend to use them in maximum concentration.

Keywords


Scotch pine seedlings damping-off; germination; mortality from the disease; preservation; output of standard seedlings; economic efficiency; forest district; greenhouse

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References


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DOI: https://doi.org/10.15421/40270130

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