Plant, Soil and Environment, 2009 (vol. 55), issue 4
Consequences of the water deficit on water relations and symbiosis in Vigna unguiculata cultivars
A.K.S. Lobato, R.C.L. Costa, C.F. Oliveira Neto, B.G. Santos Filho, M.C. Gonçalves-Vidigal, P.S. Vidigal Filho, C.R. Silva, F.J.R. Cruz, P.M.P. Carvalho, P.C.M. Santos, A. Gonela
Plant Soil Environ., 2009, 55(4):139-145 | DOI: 10.17221/1615-PSE 
The study aimed at evaluating and comparing changes provoked by the water deficit on water relations and nitrogen fixation in two Vigna unguiculata cultivars, as well as at indicating which cultivar is more tolerant under water deficiency. The experimental design used was entirely randomized in factorial scheme, with 2 cultivars (Pitiuba and Pérola) and 2 water regimes (control and stress). The parameters evaluated were the leaf relative water content, stomatal conductance, transpiration rate, nodule number, nodule dry matter, nitrate reductase enzyme activity, ureide concentration and leghemoglobin in nodule. The stomatal conductance of the...
Rainwater efficient use of the cellar-greenhouse system on slope land in hilly semi-arid area of North China
P. Gao, Z.J. Li, G.C. Zhang, Z.X. Liu
Plant Soil Environ., 2009, 55(4):146-153 | DOI: 10.17221/1642-PSE
Water resources in semi-arid and arid regions are the most strongly limiting factor of the growth for plants. Rainwater efficient use is one of the focuses of the water resources research. In this paper, an experiment was conducted at Ka Zuo Research Station of Ecological Agriculture, Institute of Applied Ecology, Chinese Academy of Sciences in the hilly semi-arid area of North China. It aimed at studying the efficient use of rainwater harvesting of the cellar-greenhouse system (CGS). Results showed that, on average, the rainwater harvesting efficiency and sediment yield of the CGS were 5.7-15.7% and 865.8-1794.0 kg/ha, respectively, and that the rainwater...
Effects of some terricolous lichens [Cladonia rangiformis Hoffm., Peltigera neckerii Hepp ex Müll. Arg., Peltigera rufescens (Weiss) Humb.] on soil bacteria in natural conditions
A.U. Akpinar, S. Ozturk, M. Sinirtas
Plant Soil Environ., 2009, 55(4):154-158 | DOI: 10.17221/1616-PSE
This paper is aimed to investigate the effects of some terricolous lichens on soil bacteria's growth in natural conditions. It is focused on species of bacteria and also on numbers of colony of soil specimens that were taken from substrates of three different terricolous lichen species. Peltigera rufescens (Weiss) Humb., which has not secondary metabolites, did not show an inhibition effect on soil bacteria. However, Peltigera neckerii Hepp ex Müll. Arg., which has secondary metabolites, has a negative effect on soil bacteria's growth. Besides, it was observed that Cladonia rangiformis Hoffm., which has many kinds of secondary...
Influence of uniconazole and plant density on nitrogen content and grain quality in winter wheat in South China
H. Han, W. Yang
Plant Soil Environ., 2009, 55(4):159-166 | DOI: 10.17221/1643-PSE
Superior protein quality and consistent processing quality is needed for winter wheat marketing in South China. It has been shown that uniconazole concentration and plant density are certainly related to crop growth. An experiment was conducted to investigate the effects of uniconazole concentration and plant density on nitrogen content and grain quality in winter wheat (Triticum aestivum L.). Trials were managed to provide three levels of density (90 × 104, 180 × 104, and 270 × 104 per ha) over plots receiving four levels of uniconazole concentrations (0, 10, 20, and 40 mg/kg) which were applied to seeds before...
Heavy metals and their bioavailability from soils in the long-term polluted Central Spiš region of SR
P. Takáč, T. Szabová, Ľ. Kozáková, M. Benková
Plant Soil Environ., 2009, 55(4):167-172 | DOI: 10.17221/21/2009-PSE
The heavy metal contents and their bioavailability were monitored in soils of Central Spiš region of SR. This area belongs to long term contaminated and hygienically loaded areas. Soil contamination by heavy metals is caused especially by ore mining, processing and treatment. Soil samples from the Central Spiš contained higher proportions of mobile forms which corresponded to the following sequence Pb > Zn > Cu, while for mobilizable forms the sequence of investigated metals was as follows: Cu > Zn > Pb. Soil pH is one of the parameters that affect significantly the share of bioavailable forms of metals. Higher proportions of mobile fractions...
A relationship between multi-nutrient soil tests (Mehlich 3, ammonium acetate, and water extraction) and bioavailability of nutrients from soils for barley
J. Matula
Plant Soil Environ., 2009, 55(4):173-180 | DOI: 10.17221/29/2009-PSE
The aim of the paper was to test the universality of three multi-nutrient soil tests after a radical intervention in soil chemistry by gypsum treatment on a variable set of 36 soils. Pot experiments with barley in a growth chamber were conducted to determine the bioavailability of K, Mg, P, Mn and B from soils. There were no marked differences in correlations between soil tests and the plant in K, Mg and P. But in the case of Mn and B Mehlich 3 test was not in appropriate agreement with the plant. Shortcoming of water extraction is missing information of capacity character for the derivation of the fertilizer recommendations on heterogeneous soils....