Application of fertilizers to reduce negative herbicidal effect when growing tobacco seedlings
https://doi.org/10.26898/0370-8799-2020-6-1
Abstract
The effectiveness of combined application of soil herbicide Command, EC at a dose of 0.02 ml/m2 and organomineral fertilizers Rostok and Stimulife was studied for cultivation of tobacco seedlings in the conditions of central zone of Krasnodar Territory. Earlier studies established the inhibitory effect of herbicide Command, EC at the initial stage of plant growth. To remove the toxic impact and improve the growth processes of tobacco, research was carried out in the greenhouse and field periods. Fertilizers Rostock and Stimulife were applied before seeds were sown at the doses of 1.0 and 5.0 ml/m2 , respectively, and twice more with irrigation water 2 and 4 weeks after seeds were sown at the rate of 1 l/m 2 alongside herbicides with the optimal supply of nutrients: NH4 – 10 mg/100 g and NO3 – 25, P – 30 and K – 35 mg/100 g. This protection against weeds made it possible not only to reduce the toxic effect of a chemical herbicide, but also to increase the quality characteristics of tobacco. Agrochemicals increased the length of plants from the root collar to the growth point by 22–32%, to the end of leaf tips by 20–36%, the weight of the aboveground parts of plants by 39–52%, and the mass of the root system by 41–69%. The yield of standard seedlings increased by 23%. Seedlings planted in the field developed better due to the effect of prolonged action of high-quality seedlings under the influence of Rostock and Stimulife preparations, which subsequently led to a significant increase in yield by 19–22% (НСР05 = 1.88). The fertilizers used improved the quality of raw tobacco by increasing the content of carbohydrates and reducing proteins.
About the Authors
L. M. Soboleva
All-Russian Scientific Research Institute of Tobacco, Makhorka and Tobacco Products
Russian Federation
Russian Federation
Larissa M. Soboleva, Candidate of Science in Agriculture, Senior Researcher
42, Moskovskaya St., Krasnodar, Krasnodar Territory, 350072
T. V. Plotnikova
All-Russian Scientific Research Institute of Tobacco, Makhorka and Tobacco Products
Russian Federation
Russian Federation
Tatyana V. Plotnikova, Candidate of Science in Agriculture, Laboratory Head
Krasnodar
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Review
For citations:
Soboleva L.M., Plotnikova T.V. Application of fertilizers to reduce negative herbicidal effect when growing tobacco seedlings. Siberian Herald of Agricultural Science. 2020;50(6):5-11. (In Russ.) https://doi.org/10.26898/0370-8799-2020-6-1
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