<abstract xmlns="http://www.w3.org/1999/xhtml">The effect of compost, inoculation with native soil microbes and their residual effects on bioavailability of nickel by peas (<italic>Pisum sativum</italic> L.) and radish (<italic>Raphanus sativus</italic> L.) grown on polluted soil were investigated in pot experiments. Plants were amendment with different compost levels (0, 0.2, 0.4, 0.6% of soil dry weight) and inoculated with different native soil microbes (4 fungal species, one bacterial species, 4 species of arbuscular mycorrhizal fungi) isolated from the polluted soil under study. Significant increases in the biomass of pea and radish plants were observed as a result of amendment application and their residual effects. The mycorrhizal dependency (MD) of pea plants was lower than of radish plants. The highest reductions of Ni levels in both plants were observed by the simultaneous applications of compost with microbes or mycorrhizal fungi to polluted soils. Soil pH increased significantly (<italic>p</italic> &lt; 0.05) as a result of applying native microbes especially with arbuscular mycorrhizal fungi (AMF) alone or combined with compost. The DTPA extractability of soil Ni was significantly decreased with increasing soil pH (<italic>p</italic> &lt; 0.05). The minimum transfer factor of Ni from polluted soil were 0.067 and 0.089 for pea and radish plants, respectively which were attained as a result of applying compost (0.6% of soil weight) inoculated with mycorrhizal fungi. From the results, we can conclude that the use of compost and native soil microbes as a soil remediate could be an effective strategy for soil remediation.</abstract>

Botany and Microbiology Department, Faculty of Science

Soil, Water and Environment Research Institute (SWERI)

Transfer of Nickel from Polluted Soil to <italic>Pisum sativum</italic> L. and <italic>Raphanus sativus</italic> L. under Composted Green Amendment and Native Soil Microbes

<abstract xmlns="http://www.w3.org/1999/xhtml">A pot experiment was conducted to study the extent of changes occurring in the nutrients, chlorophyll and protein of plants grown in cotton/alfalfa mixed culture as affected by inoculation with indigenous arbuscular mycorrhizal fungi (AMF). The experiment consisted of mycorrhizal treatments (with and without AMF inoculation) and three planting patterns (cotton monoculture, alfalfa monoculture, cotton/alfalfa mixed culture). Arbuscular mycorrhizal (AM) inoculum previously isolated from a rhizospheric soil of cotton, was a mixture of <italic>Glomus intraradices</italic>, <italic>G. viscosum</italic>, and <italic>G. mosseae</italic>. Results showed that total chlorophyll and protein concentrations, and nutrients content were higher in AM cotton plants compared with the non-AM control. Mixed culture had a positive effect on all the above parameters in cotton shoot. The highest values were noted in AM plants in the mixed culture. Improved chemicals and biochemical constituents in cotton led to an increase in dry matter production. The highest dry matter was observed in the AM mixed culture, and was significantly higher by 1.4 times than that of non-AM monoculture.</abstract>

Effect of Arbuscular Mycorrhizal Fungi on Chemical Constituents in Cotton/Alfalfa Mixed Culture

<abstract xmlns="http://www.w3.org/1999/xhtml">Current state and development of land degradation processes based on soil monitoring system in Slovakia is evaluated in this contribution. Soil monitoring system in Slovakia is consistently running since 1993 year in 5-years repetitions. Soil monitoring network in Slovakia is constructed using ecological principle, taking into account all main soil types and subtypes, soil organic matter, climatic regions, emission regions, polluted and non-polluted regions as well as various land use. The result of soil monitoring network is 318 sites on agricultural land in Slovakia. Soil properties are evaluated according to the main threats to soil relating to European Commission recommendation for European soil monitoring performance as follows: soil erosion and compaction, soil acidification, decline in soil organic matter and soil contamination. The most significant change has been determined in physical degradation of soils. The physical degradation was especially manifested in compacted and the eroded soils. It was determined that about 39% of agricultural land is potentially affected by soil erosion in Slovakia. In addition, slight decline in soil organic matter indicates the serious facts on evaluation and extension of soil degradation processes during the last period in Slovakia. Soil contamination is without significant change for the time being. It means the soils contaminated before soil monitoring process this unfavourable state lasts also at present.</abstract>

Current State and Development of Land Degradation Processes Based on Soil Monitoring in Slovakia

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper describes the procedure of calculation and assessment of deviations of the average air temperature from the normal (in relation to the normal 1961‒1990) or long-term average and the percentage of normal precipitation or long-term sum of precipitation, valid for the Slovak Republic. Three evaluation tables clearly indicate both threshold limit values, which facilitate the classification of the calculated indices for air temperature and precipitation. Criteria presented in this work are fully applicable for weather conditions evaluation during the growing season of cultivated plants in the Slovak Republic.</abstract>

National Agricultural and Food Centre ‒ Research Institute of Agroecology

Criteria for Abnormality Evaluation of Selected Weather Parameters in the Slovak Republic

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Agriculture (Pol'nohospodárstvo)

Volume 63 (2017): Issue 2 (August 2017)

Original Paper

Transfer of Nickel from Polluted Soil to Pisum sativum L. and Raphanus sativus L. under Composted Green Amendment and Native Soil Microbes

Effect of Arbuscular Mycorrhizal Fungi on Chemical Constituents in Cotton/Alfalfa Mixed Culture

Current State and Development of Land Degradation Processes Based on Soil Monitoring in Slovakia

Short Communication

Criteria for Abnormality Evaluation of Selected Weather Parameters in the Slovak Republic

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