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11 results for “calcareous soils”
Figure 2 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
Figure 2. Average of macronutrients N, P, K, Mg, and Ca uptake (mg/plant) by shoots of corn seedlings grown in Guam cobbly clay soil, either inoculated (■) or not inoculated (♦) with Glomus aggregatum and provided one of four volumes of water: W1=7200 mL, W2=3600 mL, W3=1800 mL, and W4=900 mL during the 3-week experiment. Crossbars represent standard deviations of means of four replications.
Figure 3 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
Figure 3. Average of micronutrients Fe, Mn, B, Cu, and Zn uptake (mg/plant) by shoots of corn seedlings grown in Guam cobbly clay soil, either inoculated (■) or not inoculated (♦) with Glomus aggregatum and provided one of four volumes of water: W1=7200 mL, W2=3600 mL, W3=1800 mL, and W4=900 mL during the 3-week experiment. Crossbars represent standard deviations of means of four replications.
Figure 1 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
Figure 1. Average of shoot and root biomass (g/plant), leaf width (cm), and chlorophyll SPAD reading of corn seedlings grown in Guam cobbly clay soil, either inoculated (■) or not inoculated (♦) with Glomus aggregatum, and provided one of four volumes of water: W1=7200 mL, W2=3600 mL, W3=1800 mL, and W4=900 mL during a 3-week experiment. Crossbars represent standard deviations of means with four replications.
Table 4 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
<p>Table 4. Analysis of variance for micronutrient (Fe, Mn, B, Cu, and Zn) uptake by shoots of corn seedlings. Numbers are P values with F statistics in parentheses. Plants were grown in Guam cobbly clay soil, inoculated or not inoculated with <i>Glomus aggregatum</i> and provided one of four levels of water.</p><table><tbody><tr><th></th><th></th><th></th><th><b>Micronutrients</b></th><th></th><th></th></tr></tbody><tbody><tr><th><b>Source</b></th><td><i>df</i></td><td>Fe</td><td>Mn</td><td>B</td><td>Cu</td><td>Zn</td></tr><tr><th>Water (W) *</th><td>3</td><td>0.75 (0.36)</td><td><0.01 (9.57)</td><td>0.22 (1.67)</td><td>0.12 (0.89)</td><td><0.05 (7.23)</td></tr><tr><th>Inoculation (I)</th><td>1</td><td><0.001 (31.16)</td><td><0.001 (169.46)</td><td><0.001 (69.93)</td><td><0.001 (38.63)</td><td><0.001 (436.02)</td></tr><tr><th>W × I</th><td>3</td><td>0.88 (0.37)</td><td>0.18 (1.83)</td><td>0.65 (0.62)</td><td>0.59 (0.91)</td><td>0.24 (1.29)</td></tr></tbody></table><p>*Water treatment (W) was tested against main-plot error while both inoculation (I) and interaction (W × I) were tested against the sub-plot error.</p>
Table 5 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
<p>Table 5. Correlation analysis of plant growth parameters (shoot biomass, root biomass, leaf width, SPAD chlorophyll reading) and uptake of macro- and microelements in leaf tissues.</p><table><tbody><tr><th></th><th></th><th><b>Macroelements</b></th><th><b>plant)</b></th><th></th><th></th><th><b>Microelements</b></th><th><b>plant)</b></th><th></th></tr></tbody><tbody><tr><th><b>Growth parameter</b></th><td>N</td><td>P</td><td>K</td><td>Mg</td><td>Ca</td><td>Fe</td><td>Mn</td><td>B</td><td>Cu</td><td>Zn</td></tr><tr><th>Shoot biomass (g)</th><td>0.8873</td><td>0.9521</td><td>0.9482</td><td>0.9746</td><td>0.9551</td><td>0.7587</td><td>0.9439</td><td>0.8959</td><td>0.8534</td><td>0.9321</td></tr><tr><th>Root biomass (g)</th><td>0.8258</td><td>0.9079</td><td>0.9150</td><td>0.9452</td><td>0.9497</td><td>0.7199</td><td>0.9112</td><td>0.9358</td><td>0.7390</td><td>0.8730</td></tr><tr><th>Leaf width (cm)</th><td>0.8569</td><td>0.9067</td><td>0.9394</td><td>0.9251</td><td>0.8954</td><td>0.8011</td><td>0.8957</td><td>0.8779</td><td>0.8478</td><td>0.9030</td></tr><tr><th>Chlorophyll (SPAD)</th><td>0.852</td><td>0.8211</td><td>0.8664</td><td>0.8104</td><td>0.7893</td><td>0.7284</td><td>0.7616</td><td>0.7377</td><td>0.7400</td><td>0.8377</td></tr></tbody></table><p>All correlations are highly significant at P <, Pearson.</p>
Table 3 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
<p>Table 3. Analysis of variance for macronutrient (N, P, K, Mg and Ca) uptake by shoots of corn seedlings. Numbers are P values with F statistics in parentheses. Plants were grown in Guam cobbly clay soil, inoculated or not inoculated with <i>Glomus aggregatum</i>, and provided one of four levels of water.</p><table><tbody><tr><th></th><th></th><th></th><th></th><th><b>Macronutrients</b></th><th></th><th></th></tr></tbody><tbody><tr><th><b>Source</b></th><td><i>df</i></td><td>N</td><td>P</td><td>K</td><td>Mg</td><td>Ca</td></tr><tr><th>Water (W)*</th><td>3</td><td><0.05 (4.19)</td><td><0.05 (6.06)</td><td><0.01 (6.23)</td><td><0.01 (8.03)</td><td><0.01 (6.75)</td></tr><tr><th>Inoculation (I) 1</th><td><0.001 (159.51)</td><td><0.001 (437.94)</td><td><0.001 (816.51)</td><td><0.001 (364.49)</td><td><0.001 (116.39)</td></tr><tr><th>W × I</th><td>3</td><td>0.27 (2.30)</td><td>0.07 (2.70)</td><td>0.37 (0.95)</td><td>0.08 (2.44)</td><td>0.18 (2.27)</td></tr></tbody></table><p>*Water treatment (W) was tested against main-plot error while both inoculation (I) and interaction (W × I) were tested against the sub-plot error.</p>
Table 2 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
<p>Table 2. Analysis of variance for shoot biomass, root biomass, leaf width, and SPAD chlorophyll reading of corn seedlings. Numbers are P values with F statistics in parentheses. Plants were grown in Guam cobbly clay soil, inoculated or not inoculated with <i>Glomus aggregatum</i>, and provided one of four water treatments.</p><table><tbody><tr><th></th><th></th><th></th><th><b>Growth parameters</b></th><th></th></tr></tbody><tbody><tr><th></th><td></td><td>Shoot biomass</td><td>Root biomass</td><td>Leaf width</td><td>SPAD chlorophyll</td></tr><tr><th><b>Source</b></th><td><i>df</i></td><td>(g/plant)</td><td>(g/plant)</td><td>(cm)</td><td>reading</td></tr><tr><th>Water (W)*</th><td>3</td><td><0.01 (12.52)</td><td><0.01 (11.73)</td><td><0.01 (10.19)</td><td>0.62 (3.77)</td></tr><tr><th>Inoculation (I)</th><td>1</td><td><0.001 (406.63)</td><td><0.001 (272.41)</td><td><0.001 (195.20)</td><td><0.001 (234.03)</td></tr><tr><th>W × I</th><td>3</td><td><0.01 (6.06)</td><td><0.05 (4.09)</td><td>0.44 (0.97)</td><td><0.01 (1.68)</td></tr></tbody></table><p>*Water treatment (W) was tested against main-plot error while both inoculation (I) and interaction (W × I)</p><p>were tested against the sub-plot error.</p>
Table 1 in Influence of Mycorrhizae and Irrigation on Growth and Mineral Uptake by Corn (Zea mays L.) Seedlings in a Calcareous Soil
<p>Table 1. Chemical characteristics of Guam cobbly clay soil used in the experiment.</p><table><tbody><tr><th><b>Parameter</b></th><th><b>Unit</b></th><th><b>Value</b></th></tr></tbody><tbody><tr><th>pH</th><td></td><td>7.0</td></tr><tr><th>Organic Matter</th><td>g kg-1</td><td>6.4</td></tr><tr><th>P</th><td>mg kg-1</td><td>25</td></tr><tr><th>K</th><td>mg kg-1</td><td>56</td></tr><tr><th>Ca</th><td>mg kg-1</td><td>5678</td></tr><tr><th>Mg</th><td>mg kg-1</td><td>123</td></tr><tr><th>Mn</th><td>mg kg-1</td><td>5.6</td></tr><tr><th>Fe</th><td>mg kg-1</td><td>63</td></tr><tr><th>Zn</th><td>mg kg-1</td><td>0.9</td></tr><tr><th>Cu</th><td>mg kg-1</td><td>0.7</td></tr></tbody></table>
FIGURE 1. Selliguea quinquefida.—A, B. Habitat.—C. Habit.—D. Fronds growing out from thick calcareous soil.—E in Selliguea quinquefida (Polypodiaceae), a new calciphilous species from a karst area in Guangxi, China
FIGURE 1. Selliguea quinquefida.—A, B. Habitat.—C. Habit.—D. Fronds growing out from thick calcareous soil.—E. Scales from phyllopodium (up) and rhizome (down).—F. Rhizome.—G. Abaxial view of palmate lamina (left) and simple lamina (right).
Calcareous and siliceous species on calcareous and siliceous soils over four years of reciprocal transplant experiments
<p>This dataset is a collection of data from 4-year experiments conducted in the Gironde department in southwestern France. It contains "Block, Year, Soil type, neighboring, Species and Origin" as explanatory categorical variables and "Target survival" as binomial response variable.</p> <p>These data were analyzed in order to characterize and assess how the effect of species stress tolerance and community competitive effects lead to differences in species composition between calcareous and siliceous plant communities.</p> <p>The year, rock and origin variables and their interactions as fixed factors, were used to assess the effect of abiotic conditions of the soil type and year quality, on the survival of target species from calcareous and siliceous soils growing without neighbors, using a general linear mixed-effects model with a logit link function for binomial distribution.</p> <p>The survival with and without neighbours was also used to calculate two indices to characterize the intensity (RII) and the importance (Iimp) of plant-plant interactions. RII and Iimp were then analyzed separately using linear mixed-effects models with "Year quality", "Soil type", "Origin" and their interactions as fixed factors and "Year nested within Blocks" as a random factor.</p> <p>All data were stored using Microsoft Excel and all the statistical analyses were done using R software (R Core Team 2016).</p>
Calcareous and siliceous species on calcareous and siliceous soils over four years of reciprocal transplant experiments
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