Abstract
Lettuce (Lactuca sativa L.) plays an important role in human nutrition. It is rich in vitamins, minerals, proteins, amino acids, phenolics, and other bioactive substances. Lettuce also contains a significant amount of natural nitrates which can cause harm to human health if they form carcinogenic nitrosamines. The nitrate concentration in lettuce is influenced by many factors such as climatic conditions, soil chemical properties, and especially fertilizer management. On the other hand, fertilizer management is crucial for lettuce growth, development, yield, and quality. Another significant aspect associated with fertilizer management is the environmental issue. Namely, more than 90% of applied fertilizers may be lost in the environment leading to water, soil, and air pollution. The main goal of this research was to determine whether the use of pyrophyllite ore as a soil conditioner can reduce the use of mineral fertilizers and thus the accumulation of nitrates in lettuce, which are potentially dangerous for human health, without reducing the growth and development of the plant. The experiment was set up in a greenhouse using the split-plot method in three repetitions with variants in which the fertilizer was replaced with pyrophyllite ore in the amount of 25%, 50%, and 75% of the recommended amount of fertilizer, and with a control variant where 100% of the recommended amount of fertilizer was used. The results of this research show that the replacement of mineral fertilizer with pyrophyllite in the amount of 25% and 50% of the recommended fertilization rate in the conditions of the experiment increases the yield of lettuce and improves the quality compared to the control variant, i.e. applying 100% of the recommended amount of mineral fertilizer.
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Sinanović, Ć.Z., Karić, L., Halilović, A., Žnidarčič, D., Murtić, S., Behmen, F. (2023). The Effect of Pyrophyllite on Yield Components and Accumulation of Nitrate in Lettuce (Lactuca Sativa L.). In: Brka, M., et al. 32nd Scientific-Expert Conference of Agriculture and Food Industry. Agriconference 2022. Lecture Notes in Bioengineering. Springer, Cham. https://doi.org/10.1007/978-3-031-47467-5_12
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