Plant, Soil and Environment, 2006 (vol. 52), issue 12
Effects of agricultural management on soil organic matter and carbon transformation - a review
X. Liu, Herbert S.J., A.M. Hashemi, X. Zhang, G. Ding
Plant Soil Environ., 2006, 52(12):531-543 | DOI: 10.17221/3544-PSE 
Soil organic carbon (SOC) is the most often reported attribute and is chosen as the most important indicator of soil quality and agricultural sustainability. In this review, we summarized how cultivation, crop rotation, residue and tillage management, fertilization and monoculture affect soil quality, soil organic matter (SOM) and carbon transformation. The results confirm that SOM is not only a source of carbon but also a sink for carbon sequestration. Cultivation and tillage can reduce soil SOC content and lead to soil deterioration. Tillage practices have a major effect on distribution of C and N, and the rates of organic matter decomposition and...
Uptake of thallium from artificially contaminated soils by kale (Brassica oleracea L., var. acephala)
J. Pavlíčková, J. Zbíral, M. Smatanová, P. Habarta, P. Houserová, V. Kubáň
Plant Soil Environ., 2006, 52(12):544-549 | DOI: 10.17221/3545-PSE
A pot experiment focused on the study of factors influencing thallium transfer from contaminated soils into kale (green cabbage, Brassica oleracea L. var. acephala, variety Winterbor F1) was evaluated. Three different types of topsoils with naturally low content of thallium (heavy, medium and medium-light soil) were used for pot experiments. The soils were contaminated with thallium sulfate to achieve five levels of contamination (0, 0.52, 2.10, 4.20 and 5.88 mg/kg). There were six replicates for each combination (90 pots in the experiment). The first part of the experiment started in the year of contamination (2001) and continued...
Laboratory study of retention and release of weak acid herbicide MCPA by soils and sediments and leaching potential of MCPA
E. Hiller, M. Khun, L. Zemanová, Ľ. Jurkovič, M. Bartaľ
Plant Soil Environ., 2006, 52(12):550-558 | DOI: 10.17221/3546-PSE
MCPA sorption and desorption in five surface soils (denoted as A1-5), three bottom sediments (S1-3), two river sediments (L1-2) and one subsurface soil (SS) at two initial concentrations in aqueous solution - C0 = 0.5 and 10 mg/l were studied. No significant effect of the initial concentration on MCPA equilibrium distribution between soil/sediment and aqueous solution was observed. The difference between distribution coefficient KD at C0 = 0.5 mg/l and KD at C0 = 10 mg/l was found only in the case of one bottom sediment (S2). A simple regression analysis...
The effect of quercetine on leaf abscission of apple tree (Malus domestica Borkh.), growth of flax (Linum usitatissimum L.) and pea (Pisum sativum L.), and ethylene production
H. Fišerová, J. Šebánek, J. Hradilík, S. Procházka
Plant Soil Environ., 2006, 52(12):559-563 | DOI: 10.17221/3547-PSE
This study compares effects of 2,3,5-triiodobenzoic acid (TIBA) and flavonoid quercetine (Q). In spite of the fact that both these compounds are inhibitors of the polar transport of auxin, a number of experiments demonstrated that their properties are different. If the flax seedlings were decapitated and one cotyledon was removed, the axillary bud of the remaining cotyledon grew up more intensively while TIBA (0.5% applied in the form of a lanolin paste on the remaining cotyledon) induced a correlative reversal so that axillars of removed cotyledons grew up more intensively. However, when Q (0.5%) was applied on the remaining cotyledon in the form...
Yacon [Smallanthus sonchifolius (Poeppig & Endlicher) H. Robinson]: a new cropin the Central Europe - Information
E.C. Fernández, I. Viehmannová, J. Lachman, L. Milella
Plant Soil Environ., 2006, 52(12):564-570 | DOI: 10.17221/3548-PSE
Yacon [Smallanthus sonchifolius (Poeppig Endlicher) H. Robinson, Asteraceae] is a tuber plant originated in Andes. In contrast to other root crops, which store the carbohydrates in the form of starch, yacon cumulates the carbohydrates in the form of fructooligosaccharides. They are not metabolized in the digestive tract and thus the consumption of yacon does not increase the level of glucose in the blood. This is one of the reasons why yacon is considered to be nourishment with a high potential for diabetics and overweight and obese people. As yacon leaves contain up to 25% of proteins in dry mass, it can be also used as forage. In...