Plant, Soil and Environment, 2005 (vol. 51), issue 5
The effect of molybdenum and boron in soil on the growth and photosynthesis of three soybean varieties
P. Liu, Y.S. Yang, G.D. XU, Y.H. Fang, Y.A. Yang, R.M. Kalin
Plant Soil Environ., 2005, 51(5):197-205 | DOI: 10.17221/3574-PSE 
This paper presents a study on growth and photosynthesis response of soybean to Mo and/or B in soil. Pot experiments were set up to examine the effect of Mo and/or B on growth and photosynthesis of three soybean varieties with four treatments (control, +Mo, +B, +[Mo + B]) at various growth stages. The study showed that Mo and/or B increased main length, system volume and dry weight of the roots, aboveground biomass, leaves' photosynthesis rate of soybean. The variation and interaction between Mo and B in soil was explored with regard to their impact on soybean growth and photosynthesis. There were some dissimilarity in growth and photosynthesis in...
Photosynthetic performance of two maize genotypes as affected by chilling stress
K. Kosová, D. Haisel, I. Tichá
Plant Soil Environ., 2005, 51(5):206-212 | DOI: 10.17221/3575-PSE
The effect of chilling on light dependence of photosynthetic and chlorophyll a fluorescence characteristics in two maize genotypes CE 704 and CE 810 grown in a glasshouse during spring and autumn was studied. In spring, the net photosynthetic rate (PN) of CE 704 plants was not affected by chilling under moderate irradiance but it was strongly affected under a saturating one. This indicates that efficiency of photosynthetic apparatus was not affected by chilling but its capacity was decreased. Contrary to CE 704, CE 810 plants were not affected by chilling under saturating irradiance. In autumn, CE 704 plants adapted to chilling...
Effect of temperature and moisture on O2 evolution rate of cultivated Phaeozem: analyses of a long-term field experiment
V.O. Lopes De Gerenyu, I.N. Kurganova, L.N. Rozanova, V.N. Kudeyarov
Plant Soil Environ., 2005, 51(5):213-219 | DOI: 10.17221/3576-PSE
Soil temperature and moisture are the main ecological factors regulating the processes of production and emission of CO2 from soil surface. The CO2 evolution rate from cultivated clay Phaeozem (Russia, Moscow region; 54°50'N, 37°35'E) were studied under field conditions from November 1997 to October 2002. The daily mean CO2 evolution rate varied widely - from 0.9 to 246 mg C/m2/h. The total annual CO2 flux from cultivated Phaeozem averaged 352 ± 148 g C/m2/yr, the interannual variability amounted to 42%. We found significant linear trends (R = 0.46-0.55, P <...
Aluminium induced esterase activity and isozyme pattern in barley root tip
L. Tamás, J. Huttová, I. Mistrík, M. Šimonovičová, B. Široká
Plant Soil Environ., 2005, 51(5):220-225 | DOI: 10.17221/3577-PSE
Changes in the activity of esterase as well as changes in the viability of root cells and some growth parameters were analysed during cultivation of barley seedlings in the artificial substrate under Al stress conditions. Aluminium-induced elevated esterase activity correlated with Al uptake, root growth inhibition and increased Evans blue uptake in the barley root tips. Analysis of isozyme pattern of esterase revealed one anodic and one cathodic esterase isozyme induced by Al-treatment. The possible role of elevated esterase activity during Al stress is discussed.
Effect of nonwoven polypropylene covers on early tuber yield of potato crops
R. Jabłońska-Ceglarek, W. Wadas
Plant Soil Environ., 2005, 51(5):226-231 | DOI: 10.17221/3578-PSE
In this six-year research study the effect of nonwoven polypropylene covering on the quantity and quality of early potato yield was estimated. The use of nonwoven polypropylene covers resulted in an increase in the tuber yield and smaller yield variability in the various years, when compared with the traditional cultivation, especially at a very early date of potato harvest. In the cultivation with nonwoven polypropylene covering, the marketable tuber yield 60 days after planting was higher by 23.34% on average and 75 days after planting by 10.92% in the six-year period of the study, compared with the cultivation with no plant covering. The higher...
The effect of nitrogen fertilization and anti-fungal plant protection on sugar beet yielding
M. Pytlarz-Kozicka
Plant Soil Environ., 2005, 51(5):232-236 | DOI: 10.17221/3579-PSE
Sugar beet yielding and, thus, the profitability of its cultivation depends on various conditions. These are mainly a dose of nitrogen fertilizing and anti-fungal plant protection. Based on the research carried out in a private-owned farm in Biała commune, Opole province, Poland, it was observed that the most important factors influencing plant development and root yield of sugar beets (var. Kassandra and Cortina) were genetic features of the investigated varieties and fungal control. They increased considerably root yield and sugar content. The doubled nitrogen dose from 90 to 180 kg N/ha enhanced a slight, statistically insignificant, root yield...
Changes in the biomass production and total soluble protein spectra of nitrate-fed and nitrogen-fixing soybeans subjected to gradual water stress
E. Kirova, D. Nedeva, A. Nikolova, G. Ignatov
Plant Soil Environ., 2005, 51(5):237-242 | DOI: 10.17221/3580-PSE
The effect of the sources of nitrogen nutrition (nitrogen fixation or nitrate assimilation) and a gradual water stress on the relative water content, total fresh and dry biomass production, leaf growth, and changes in the total soluble protein spectra were studied. The plants were cultivated as soil cultures in a naturally illuminated greenhouse. Comparative studies were carried out with respect to well-watered, control plants. Nitrogen-fixing control and drought plants had relatively smaller root development but better relative water content and large leaf area on the last sampling day than nitrate-fed soybean plants. Water deficit effects on plant...