Plant and Soil

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Copper in plant species in a copper gradient in Catalonia (North East Spain) and their potential for phytoremediation
Plant and Soil - Tập 230 Số 2 - Trang 247-256 - 2001
Poschenrieder, Charlotte, Bech, Jaume, Llugany, Mercè, Pace, Alina, Fenés, Eva, Barceló, Juan
The accumulation of Cu in roots and shoots of 32 plant species growing on soils with a wide range of Cu concentrations (30–18 500 μg g−1 total soil Cu) located in Collserola Mountain (Barcelona, Spain) was analysed. High Cu availability decreased the species diversity in the Hyparrhenietum hirto-pubescentis, the natural plant association at the study sites. Shoot and root Cu concentrations in rela...... hiện toàn bộ
Nitrogen fixation and N contribution by promiscuous nodulating soybeans in the southern Guinea savanna of Nigeria
Plant and Soil - Tập 195 Số 2 - Trang 257-266 - 1997
Sanginga, N., Dashiell, K., Okogun, J.A., Thottappilly, G.
Attention is being paid to improving the N2 fixation of promiscuous nodulating soybeans in an attempt to develop sustainable cropping systems in the moist savanna. There is however a dearth of reliable estimates of N2 fixation by these promiscuous soybeans and hardly any quantitative information is available on their residual N benefits to subsequent cereal crops grown in the southern Guinea savan...... hiện toàn bộ
Phosphorus Transformations in an Oxisol under contrasting land-use systems: The role of the soil microbial biomass
Plant and Soil - Tập 237 Số 2 - Trang 197-210 - 2001
Oberson, A., Friesen, D. K., Rao, I.M., Bühler, S., Frossard, E.
It is generally assumed that phosphorus (P) availability for plant growth on highly weathered and P-deficient tropical soils may depend more on biologically mediated organic P (Po) turnover processes than on the release of adsorbed inorganic P (Pi). However, experimental evidence showing the linkages between Po, microbial activity, P cycling and soil P availability is scarce. To test whether land-...... hiện toàn bộ
Nitrous oxide emissions following application of residues and fertiliser under zero and conventional tillage
Plant and Soil - Tập 254 Số 2 - Trang 361-370 - 2003
Baggs, E.M., Stevenson, M., Pihlatie, M., Regar, A., Cook, H., Cadisch, G.
Emissions of N2O were measured following combined applications of inorganic N fertiliser and crop residues to a silt loam soil in S.E. England, UK. Effects of cultivation technique and residue application on N2O emissions were examined over 2 years. N2O emissions were increased in the presence of residues and were further increased where NH4NO3 fertiliser (200 kg N ha−1) was applied. Large fluxes ...... hiện toàn bộ
Stabilization mechanisms of soil organic matter: Implications for C-saturation of soils
Plant and Soil - Tập 241 Số 2 - Trang 155-176 - 2002
Six, J., Conant, R. T., Paul, E. A., Paustian, K.
The relationship between soil structure and the ability of soil to stabilize soil organic matter (SOM) is a key element in soil C dynamics that has either been overlooked or treated in a cursory fashion when developing SOM models. The purpose of this paper is to review current knowledge of SOM dynamics within the framework of a newly proposed soil C saturation concept. Initially, we distinguish SO...... hiện toàn bộ
Effects of silicon on enzyme activity and sodium, potassium and calcium concentration in barley under salt stress
Plant and Soil - Tập 209 Số 2 - Trang 217-224 - 1999
Liang, Yongchao
Two contrasting barley (Hordeum vulgare L.) cultivars: Kepin No.7 (salt sensitive), and Jian 4 (salt tolerant) were grown in a hydroponics system containing 120 mol m-3 NaCl only and 120 mol m-3 NaCl with 1.0 mol m-3 Si (as potassium silicate). Compared with the plants treated with salt alone, superoxide dismutase (SOD) activity in plant leaves and H+-ATPase activity in plant roots increased, and ...... hiện toàn bộ
Manganese and iron interactions on their uptake and distribution in soybean (Glycine max (L.) Merr.)
Plant and Soil - - 1983
Heenan, D. P., Campbell, L. C.
The uptake and distribution of iron and manganese were studied in a manganese-sensitive soybean cultivar (‘Bragg’) grown over a range of supply levels of these nutrients in solution culture. At high (90 and 275 μM) manganese levels, increasing the iron concentration in solution from 2 to 100 μM partially overcame the effects of manganese toxicity. Interactions between manganese and iron occurred f...... hiện toàn bộ
Legumes have a greater effect on rhizosphere properties (pH, organic acids and enzyme activity) but a smaller impact on soil P compared to other cover crops
Plant and Soil - Tập 394 Số 1 - Trang 139-154 - 2015
Maltais-Landry, G.
Plants affect phosphorus (P) cycling through uptake and the mobilization of P from several soil pools into soil solution. The effects of seven cover crop species – three legumes (variable morphology), three cereals (variable domestication degree), one mustard (non-mycorrhizal) – on P cycling were compared in a greenhouse experiment. Monocultures and legume-cereal mixtures were grown in an artifici...... hiện toàn bộ
Water relations and root activities of Buchloe dactyloides and Zoysia japonica in response to localized soil drying
Plant and Soil - Tập 208 Số 2 - Trang 179-186 - 1999
Huang, Bingru
Effects of localized soil drought stress on water relations, root growth, and nutrient uptake were examined in drought tolerant ‘Prairie’ buffalograss [Buchloe dactyloides (Nutt.) Engelm.] and sensitive ‘Meyer’ zoysiagrass (Zoysia japonica Steud.). Grasses were grown in small rhizotrons in a greenhouse and subjected to three soil moisture regimes: (1) watering the entire 80-cm soil profile (well-w...... hiện toàn bộ
The Symbiotic Requirements of Different Medicago Spp. Suggest the Evolution of Sinorhizobium Meliloti and S. Medicae with Hosts Differentially Adapted to Soil pH
Plant and Soil - - 2005
Garau, G., Reeve, W.G., Brau, L., Deiana, P., Yates, R.J., James, D., Tiwari, R., O’Hara, G.W., Howieson, J.G.
Nitrogen fixing rhizobia associated with the Medicago L. genus belong to two closely related species Sinorhizobium medicae and S. meliloti. To investigate the symbiotic requirements of different Medicago species for the two microsymbionts, 39 bacterial isolates from nodules of eleven Medicago species growing in their natural habitats in the Mediterranean basin plus six historical Australian commer...... hiện toàn bộ
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