PubAg

Main content area

You searched for: Journal Biology and fertility of soils Remove constraint Journal: Biology and fertility of soils Publication Year 1999 Remove constraint Publication Year: 1999 Source 1999 v.28 no.2 Remove constraint Source: 1999 v.28 no.2
Start Over

Search

15  Search Results

1 - 15 of 15
Number of results to display per page

Search Results

1. A critical assessment of methods for determining organic phosphorus in savanna soils

Author:
Agbenin, J.O.; Iwuafor, E.N.O.; Ayuba, B.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 177-181
ISSN:
0178-2762
Subject:
savanna soils; soil types; soil analysis; organophosphorus compounds; quantitative analysis; methodology; Nigeria
Abstract:
... Two newly introduced extraction techniques for determining total organic P (P(0)) were compared with the standard high-temperature ignition method in selected savanna soils of Nigeria. The two extraction techniques were: (1) concentrated H2SO4 and dilute base sequential extraction (18 N H2SO4 and 0.5 N NaOH) and (2) basic EDTA method (0.25 M NaOH plus 0.05 M Na2EDTA). The concentrated H2SO4 and di ...
DOI:
10.1007/s003740050481

2. Effect of ectomycorrhizae on the growth and uptake and transport of 15N-labeled compounds by Pinus tabulaeformis seedings under water-stressed conditions

Author:
Wu, B.; Watanabe, I.; Hayatsu, M.; Nioh, I.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 136-138
ISSN:
0178-2762
Subject:
symbiosis; Cenococcum graniforme; seedlings; roots; nitrogen; nutrient uptake; nutrient transport; radiolabeling; water stress; ectomycorrhizae; stress response; Japan
Abstract:
... Seedlings of Chinese pine (Pinus tabulaeformis Carr.) were grown in a growth chamber using a sterilized soil/sand/vermiculite mixture, and were inoculated with the ectomycorrhizal fungus Cenococcum graniforme (Sow.) Ferd. and Winge. The function of external mycelium of ectomycorrhiza for uptake and transport of N from 15N-labeled NH4+ and NO3- for plant nutrition was evaluated under well-watered c ...
DOI:
10.1007/s003740050474

3. Effects of algae and fertilizer-nitrogen on pH, Eh and depth of aerobic soil in laboratory columns of a flooded sandy loam

Author:
Thind, H.S.; Rowell, D.L.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 162-168
ISSN:
0178-2762
Subject:
sandy loam soils; nitrogen fertilizers; nitrification; nutrient availability; ammonium chloride; potassium nitrate; photosynthesis; soil pH; redox potential; diurnal variation; aerobic conditions; Oryza sativa; crop production; algae and seaweeds; ammonium carbonate
Abstract:
... A sandy loam was incubated under floodwater in the laboratory either in the dark or in the light (7 h day, 20 degrees CV; 17 h night, 15 degrees C) and with four N sources [control, ammonium carbonate [(NH4)2CO3], ammonium chloride (NH4Cl), potassium nitrate (KNO3)]. In the dark, floodwater pH rose steadily from 6.4 to about 7.5 over 60 days in the control, KNO3 and (NH4)2CO3 treatments, but with ...
DOI:
10.1007/s003740050479

4. Effects of repeated drought on soil microarthropod communities in the northern Chihuahuan Desert

Author:
Whitford, W.G.; Sobhy, H.M.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 117-120
ISSN:
0178-2762
Subject:
soil arthropods; arthropod communities; desert animals; shrubs; Larrea tridentata; Prosopis glandulosa; drought; soil temperature; soil organic matter; xerophytes; arid zones; New Mexico
Abstract:
... Soil microarthropods were sampled in plots centered on creosotebushes (Larrea tridentata) and in plots centered on mesquite (Prosopis glandulosa) coppice dunes. Nine plots in each area were covered by rain-out shelters with greenhouse plastic roofs which excluded natural rainfall and nine plots received natural rainfall. There were differences in the abundance of several mite taxa in soils from th ...
DOI:
10.1007/s003740050471

5. Effects of repeated manure and fertilizer phosphorus additions on soil phosphorus dynamics under a soybean-wheat rotation

Author:
Damodar Reddy, D.; Subba Rao, A.; Takkar, P.N.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 150-155
ISSN:
0178-2762
Subject:
animal manures; Vertisols; soil chemistry; phosphorus; nutrient availability; Glycine max; Triticum aestivum; crop production; phosphorus fertilizers; crop rotation; tropics; semiarid zones; India
Abstract:
... Soil P availability and efficiency of applied P may be improved through an understanding of soil P dynamics in relation to management practices in a cropping system. Our objectives in this study were to evaluate changes in plant-available (Olsen) P and in different inorganic P (P(i)) and organic P (P(0)) fractions in soil as related to repeated additions of manure and fertilizer P under a soybean- ...
DOI:
10.1007/s003740050477

6. Inoculation with phosphate-solubilizing microorganisms and a vesicular-arbuscular mycorrhizal fungus improves dry matter yield and nutrient uptake by wheat grown in a sandy soil

Author:
Singh, S.; Kapoor, K.K.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 139-144
ISSN:
0178-2762
Subject:
Triticum aestivum; Glomus; symbiosis; Bacillus circulans; Cladosporium herbarum; rock phosphate; solubility; roots; nitrogen; nutrient uptake; dry matter accumulation; sandy soils; nutrient deficiencies; soil chemistry; vesicular arbuscular mycorrhizae
Abstract:
... The effect of inoculating wheat (Triticum aestivum L.) with the PO43--solubilizing microorganisms (PSM) Bacillus circulans and Cladosporium herbarum and the vesicular-arbuscular mycorrhizal (VAM) fungus Glomus sp. 88 with or without Mussoorie rock phosphate (MRP) amendment in a nutrient-deficient natural sandy soil was studied. In the sandy soil of low fertility root colonization by VAM fungi was ...
DOI:
10.1007/s003740050475

7. Interplay of omnivory, energy channels and C availability in a microbial-based soil food web

Author:
Mikola, J.; Setala, H.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 212-218
ISSN:
0178-2762
Subject:
soil fungi; soil bacteria; soil invertebrates; trophic relationships; nutrient availability; food chain; biogeochemical cycles
Abstract:
... To study the effects of omnivory on the structure and function of soil food webs and on the control of trophic-level biomasses in soil, two food webs were established in microcosms. The first one contained fungi, bacteria, a fungivorous nematode (Aphelenchoides saprophilus) and a bacterivorous nematode (Caenorhabditis elegans) and the second one fungi, bacteria, the fungivore and an omnivorous nem ...
DOI:
10.1007/s003740050485

8. Isolation and selection of indigenous Azospirillum spp. from a subtropical island, and effect of inoculation on growth of lowland rice under several levels of N application

Author:
Gunarto, L.; Adachi, K.; Senboku, T.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 129-135
ISSN:
0178-2762
Subject:
soil bacteria; Azospirillum; strain differences; Oryza sativa; symbiosis; roots; nitrogen fixation; nutrient uptake; crop production; crop yield; nitrogen fertilizers; application rate; Japan
Abstract:
... Thirty-five Azospirillum strains (13 strains from plant roots and 22 strains from soils) were isolated from Ishigaki island, Japan, which has a subtropical climate. These strains were different from each other according to polymerase-chain-reaction band patterns obtained by using a random primer (OPT-08). Two Azospirillum strains (AZ43 and AZ92-2) were also examined for use in further experiments. ...
DOI:
10.1007/s003740050473

9. Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. I. Decomposition and nutrient release

Author:
Lupwayi, N.Z.; Haque, I.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 182-195
ISSN:
0178-2762
Subject:
Alfisols; soil amendments; cattle manure; nitrogen fertilizers; Leucaena leucocephala; Leucaena pallida; degradation; soil organic matter; nitrogen; nutrient availability; phosphorus; potassium; calcium; magnesium; quantitative analysis; nutrient uptake; nutrient balance; alley cropping; Zea mays; crop production; crop yield; Ethiopia
Abstract:
... A litter bag technique was used to study the decomposition and release of N, P, K, Ca, and Mg from Leucaena leucocephala and L. pallida prunings and cattle manure in a hedgerow intercropping trial conducted in the Ethiopian highlands. Hedgerow intercropping (also called alley cropping or alley farming) is an agroforestry system in which trees are grown in dense hedges between alleys where short-cy ...
DOI:
10.1007/s003740050482

10. Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. III. Nutrient balance

Author:
Lupwayi, N.Z.; Haque, I.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 204-211
ISSN:
0178-2762
Subject:
Alfisols; soil amendments; cattle manure; nitrogen fertilizers; Leucaena leucocephala; Leucaena pallida; degradation; soil organic matter; nutrient availability; nitrogen; phosphorus; potassium; calcium; magnesium; quantitative analysis; nutrient uptake; nutrient balance; alley cropping; Zea mays; crop production; crop yield; Ethiopia
Abstract:
... Balances between nutrients applied or mineralized and nutrients removed in maize grain and stover were calculated in a hedgerow intercropping experiment in which Leucaena leucocephala and L. pallida prunings and cattle manure were applied. Hedgerow intercropping (also called alley cropping) is an agroforestry system in which trees are grown in dense hedges between alleys where short-cycle crops ar ...
DOI:
10.1007/s003740050484

11. Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake

Author:
Lupwayi, N.Z.; Haque, I.; Saka, A.R.; Siaw, D.E.K.A.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 196-203
ISSN:
0178-2762
Subject:
Alfisols; soil amendments; nitrogen fertilizers; cattle manure; Leucaena leucocephala; Leucaena pallida; degradation; soil organic matter; nutrient availability; nitrogen; phosphorus; magnesium; quantitative analysis; potassium; calcium; nutrient uptake; nutrient balance; alley cropping; Zea mays; crop production; crop yield; Ethiopia
Abstract:
... The effects of Leucaena leucocephala and L. pallida prunings and cattle manure on maize nutrient uptake and yield were investigated in a hedgerow intercropping trial in the Ethiopian highlands. Hedgerow intercropping (also called alley cropping) is an agroforestry system in which trees are grown in dense hedges between alleys where short-cycle crops are grown. The hedges are pruned periodically du ...
DOI:
10.1007/s003740050483

12. Methane production in unamended and rice-straw-amended soil at different moisture levels

Author:
Rath, A.K.; Mohanty, S.R.; Mishra, S.; Kumaraswamy, S.; Ramakrishnan, B.; Sethunathan, N.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 145-149
ISSN:
0178-2762
Subject:
alluvial soils; rice soils; soil amendments; rice straw; soil water content; soil water regimes; Oryza sativa; crop production; methane; rice; flooded conditions; methane production
Abstract:
... CH4 production in an alluvial soil, unamended or amended with rice straw (1% w/w), was examined under nonflooded [-1.5 MPa. -0.01 MPa and 0 MPa (saturated) and flooded (1:1.25 soil to water ratio)] conditions during a 40-day incubation in closed Vacutainer tubes. CH4 production was negligible at -1.5 MPa, but increased with an increase in the moisture level. Addition of rice straw distinctly incre ...
DOI:
10.1007/s003740050476

13. Microscopic observations of bacterial sorption in soil cores

Author:
Fisk, A.C.; Murphy, S.L.; Tate, R.L. III.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 111-116
ISSN:
0178-2762
Subject:
sandy loam soils; Arthrobacter crystallopoietes; sorption; microaggregates; fluorescence microscopy; New Jersey
Abstract:
... Bacterial cells may be immobilized in soil through adsorption to a variety of soil particles. These associations affect the interaction of native soil microbes with their nutrient sources and control at least in part the distribution of foreign bacteria entering the soil system. To observe the relationship between soil structure and adsorption of amended bacterial cells, a series of intact cores o ...
DOI:
10.1007/s003740050470

14. Plasmid transfer between introduced and indigenous bacteria in leaf litter, soil and vermicompost as affected by soil invertebrates

Author:
Byzov, B.A.; Claus, H.; Tretyakova, E.B.; Ryabchenko, N.F.; Mozgovaya, I.N.; Zvyagintsev, D.G.; Filip, Z.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 169-176
ISSN:
0178-2762
Subject:
soil bacteria; Pseudomonas; Pseudomonas putida; Pseudomonas aeruginosa; Enterobacter cloacae; Enterococcus faecalis; Bacillus thuringiensis subsp. israelensis; plasmids; gene transfer; soil invertebrates; Armadillidium vulgare; Aporrectodea caliginosa; Eisenia fetida; vermicomposting; plant litter; Pseudomonas stutzeri; Ukraine
Abstract:
... Plasmid transfer between introduced strains of Pseudomonas stutzeri JM302 (pLV1013), Pseudomonas putida PA W340 (pLV1017), Pseudomonas aeruginosa PAO5 (RP4), and Enterobacter cloacae MF10 (RP4), all of them harbouring genetically modified or naturally occurring plasmids and bacteria indigenous to oak leaf litter, soddy-podzolic soil or vermicompost was monitored using non-sterile laboratory microc ...
DOI:
10.1007/s003740050480

15. The impact of a low humus level in arable soils on microbial properties, soil organic matter quality and crop yield

Author:
Beyer, L.; Sieling, K.; Pingpank, K.
Source:
Biology and fertility of soils 1999 v.28 no.2 pp. 156-161
ISSN:
0178-2762
Subject:
arable soils; biological activity in soil; soil organic matter; soil fertility; quantitative analysis; soil bacteria; soil fungi; soil degradation; alkaline phosphatase; oxidoreductases; phosphoric monoester hydrolases; enzyme activity; crop yield; humus; Germany
Abstract:
... In arable soils in Schleswig-Holstein (North-west Germany) nearly 30% of the total organic C (TOC) stored in former times in the soil has been mineralized in the last 20 years. Microbial biomass, enzyme activities and the soil organic matter (SOM) composition were investigated in order to elucidate if a low TOC level affects microbial parameters, SOM quality and crop yield. Microbial biomass C (C( ...
DOI:
10.1007/s003740050478