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Bulgarian Journal of Soil Science, Agrochemistry and Ecology
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Effect of Nitrogen Form and Arbuscular Mycorrhizal Mushrooms on Salad Development and Quality
Ivanka Mitova
Abstract: The role of the independent and combined influence of the nitrogen source and arbuscular mycorrhizal fungi in soil nutrient media on the processes of development, feeding and formation of quality in two varieties of salads was investigated Under the conditions of vascular experience. The fertilizer standards are the same - N300P300K377. Nitrogen in the variants of the experiment was introduced at the same rate but in the form of NH4NO3, CO(NH2)2, Ca(NO3)2, (NH4)2SO4. Inoculation with mycorrhizal fungi increases yields in the Izi variety, while the differences are insignificant in the Matador variety. In both variants, plants fertilized with (NH4)2SO4 form the largest mass leaf, this effect being more pronounced in the variants with added AMF. In both variants, induction with AMF increases the dry matter, total sugars, plastid pigments and reduces the nitrate content. Plants fertilized with (NH4)2SO4 form the largest dry mass regardless of the presence or absence of AMF. The variants of the Matador variant as well as those without the AMF of the Izi variant have the highest sugars when fertilizing with Ca(NO3)2. Most nitrates for both non AMF variants have variants with (NH4)2SO4, whereas in plants with inoculated fungi it is after fertilizing with Ca(NO3)2.
Keywords: arbuscular mycorrhizal fungi; fresh weight; Lactuca sativa L.; nitrogen fertilizers; plastid pigments; quality parameters
Date published: 2020-09-04
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