Effects of modified clinoptilolite on phosphorus mobilisation and potassium or ammonium release in Ferrosols

Soil Research ◽  
2006 ◽  
Vol 44 (3) ◽  
pp. 285 ◽  
Author(s):  
Q. X. Hua ◽  
J. M. Zhou ◽  
H. Y. Wang ◽  
C. W. Du ◽  
X. Q. Chen ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Nutrient ◽  
Nutrient Concentrations ◽  
P Availability ◽  
Adsorption And Desorption ◽  
Modified Clinoptilolite ◽  
Positive Effect ◽  
Phosphorus Solubility

An investigation was conducted to study effects of the potassium and ammonium saturated clinoptilolite on P availability in Ferrosols. The adsorption and desorption of phosphorus were determined by shaking 2.5 g soil with 0, 0.5, and 2.5 g clinoptilolite at 0.31 or 1.25 mg P/g soil in 50 mL solution for a total of 72 h (24 h for clinoptilolite and 48 h for phosphate). The nutrient concentrations in supernatants were measured by spectrophotometry. Results showed phosphorus solubility was significantly increased with clinoptilolite addition. Increasing the amount of clinoptilolite enhanced the concentration of P up to 6.85 and 41.29 mg/L at 0.31 and 1.25 mg P/g soil, respectively. Correspondingly, the amount of potassium and ammonium released from the clinoptilolite were up to 63.69 and 12.20 mg/L at 0.31 mg P/g soil, and 107.42 and 29.94 mg/L at 1.25 mg P/g soil. Nutrient concentrations in the treatments in which clinoptilolite was added before P were greater than that in the treatments in which P was added prior to clinoptilolite. The results also suggest that potassium and ammonium saturated clinoptilolite can increase P solubility while providing K and NH4 to the soil, a concurrent positive effect for plant growth.

scholarly journals Effects of animal manure upon growth of Cerrado plants

2020 ◽  
Vol 11 (4) ◽  
pp. 81-88
Author(s):  
Lucas Ferreira ◽  
Mairê Butzer Viñales ◽  
Lucas Lopes e Silva ◽  
Luciola Santos Lannes
Keyword(s):  
Plant Growth ◽  
Functional Groups ◽  
Organic Matter Content ◽  
Soil Nutrient ◽  
Animal Manure ◽  
Matter Content ◽  
Plant Functional Groups ◽  
Nutrient Concentrations ◽  
Invasive Grass ◽  
Invasive Grasses

Through excretion, animals return to the soil part of the nutrients they ingest. This input can be an alternative to artificial inorganic fertilization aiming at increasing soil nutrient concentrations in degraded areas that are prone to restoration. In nutrient-poor soils, the addition of animal manure can promote increases in soil fertility, but studies assessing its effects upon plant communities are meager. This study aims at checking whether the addition of manure originated from livestock promotes plant growth increase and enzyme activity in Cerrado native plants of different functional groups as a way to subsidize processes of environmental recuperation in degraded areas using organic fertilization of an easily available source, as animal manure. The experiment was conducted in a screenhouse through a completely randomized design with four manure and six species treatments with three replicates. Manure treatments used were control, cattle, sheep and goat manure. The plant species selected belonged to main Cerrado herbaceous functional groups – two naturalized grasses, two alien invasive grasses, a legume herb and a Malvaceae herb. Phosphorus and nitrogen concentrations, and N:P ratios varied according to the type of manure. Soil organic matter content, phosphorus and potassium concentrations increased upon manure addition. Different manure types promoted various effects in height, biomass and acid phosphatase activity amongst the plants. Goat and cattle manure positively influenced Urochloa decumbens, an exotic invasive grass living in the Cerrado, whereas sheep manure addition promoted increase of non-invasive grasses. These results show that animal manure can promote better nutrient conditions for plants living in degraded areas, but the selection of the manure type for application in restoration projects aiming at aiding plant growth in Cerrado degraded areas will depend on the purpose of the project because different dung types benefit different plant functional groups.

Prediction Results of Different Modeling Methods in Soil Nutrient Concentrations Based on Spectral Technology

2019 ◽  
Vol 86 (4) ◽  
pp. 765-770 ◽  
Author(s):  
X.-Y. Li ◽  
P.-P. Fan ◽  
Y. Liu ◽  
G.-L. Hou ◽  
Q. Wang ◽  
...  
Keyword(s):  
Soil Nutrient ◽  
Nutrient Concentrations ◽  
Modeling Methods

scholarly journals Aboveground plant-to-plant communication reduces root nodule symbiosis and soil nutrient concentrations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuta Takahashi ◽  
Kaori Shiojiri ◽  
Akira Yamawo
Keyword(s):  
Root Nodule ◽  
Total Phenolics ◽  
Root Nodules ◽  
Soil Nutrient ◽  
Chemical Defenses ◽  
Nutrient Concentrations ◽  
Soil C ◽  
Plant Communication ◽  
Root Nodule Symbiosis ◽  
Nodule Symbiosis

AbstractAboveground communication between plants is well known to change defense traits in leaves, but its effects on belowground plant traits and soil characteristics have not been elucidated. We hypothesized that aboveground plant-to-plant communication reduces root nodule symbiosis via induction of bactericidal chemical defense substances and changes the soil nutrient environment. Soybean plants were exposed to the volatile organic compounds (VOCs) from damaged shoots of Solidago canadensis var. scabra, and leaf defense traits (total phenolics, saponins), root saponins, and root nodule symbiosis traits (number and biomass of root nodules) were measured. Soil C/N ratios and mineral concentrations were also measured to estimate the effects of resource uptake by the plants. We found that total phenolics were not affected. However, plants that received VOCs had higher saponin concentrations in both leaves and roots, and fewer root nodules than untreated plants. Although the concentrations of soil minerals did not differ between treatments, soil C/N ratio was significantly higher in the soil of communicated plants. Thus, the aboveground plant-to-plant communication led to reductions in root nodule symbiosis and soil nutrient concentrations. Our results suggest that there are broader effects of induced chemical defenses in aboveground plant organs upon belowground microbial interactions and soil nutrients, and emphasize that plant response based on plant-to-plant communications are a bridge between above- and below-ground ecosystems.

Influence of alpine plants on soil nutrient concentrations in a monoculture experiment

2001 ◽  
Vol 36 (3) ◽  
pp. 225-241 ◽  
Author(s):  
Vladimir G. Onipchenko ◽  
Mikhail I. Makarov ◽  
Eddy van der Maarel
Keyword(s):  
Soil Nutrient ◽  
Alpine Plants ◽  
Nutrient Concentrations

scholarly journals Morphological and Metabolite Responses of Potatoes under Various Phosphorus Levels and Their Amelioration by Plant Growth-Promoting Rhizobacteria

2021 ◽  
Vol 22 (10) ◽  
pp. 5162
Author(s):  
Leangsrun Chea ◽  
Birgit Pfeiffer ◽  
Dominik Schneider ◽  
Rolf Daniel ◽  
Elke Pawelzik ◽  
...  
Keyword(s):  
Amino Acids ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Shoot Biomass ◽  
Root Surface Area ◽  
Limiting Factor ◽  
P Availability ◽  
P Deficiency ◽  
Plant Growth Promoting ◽  
Growth Promoting

Low phosphorus (P) availability is a major limiting factor for potatoes. P fertilizer is applied to enhance P availability; however, it may become toxic when plants accumulate at high concentrations. Therefore, it is necessary to gain more knowledge of the morphological and biochemical processes associated with P deficiency and toxicity for potatoes, as well as to explore an alternative approach to ameliorate the P deficiency condition. A comprehensive study was conducted (I) to assess plant morphology, mineral allocation, and metabolites of potatoes in response to P deficiency and toxicity; and (II) to evaluate the potency of plant growth-promoting rhizobacteria (PGPR) in improving plant biomass, P uptake, and metabolites at low P levels. The results revealed a reduction in plant height and biomass 60–80% under P deficiency compared to P optimum. P deficiency and toxicity conditions also altered the mineral concentration and allocation in plants due to nutrient imbalance. The stress induced by both P deficiency and toxicity was evident from an accumulation of proline and total free amino acids in young leaves and roots. Furthermore, root metabolite profiling revealed that P deficiency reduced sugars by 50–80% and organic acids by 20–90%, but increased amino acids by 1.5–14.8 times. However, the effect of P toxicity on metabolic changes in roots was less pronounced. Under P deficiency, PGPR significantly improved the root and shoot biomass, total root length, and root surface area by 32–45%. This finding suggests the potency of PGPR inoculation to increase potato plant tolerance under P deficiency.

Spatial Patterns and Drivers of Soil Chemical Properties in a Typical Hickory Plantation

2021 ◽  
Author(s):  
Mengjiao Sun ◽  
Enqing Hou ◽  
Jiasen Wu ◽  
Jianqin Huang ◽  
Xingzhao Huang
Keyword(s):  
Random Forest ◽  
Soil Nutrients ◽  
Spatial Patterns ◽  
Abiotic Factors ◽  
Soil Nutrient ◽  
Parent Material ◽  
Mean Annual Precipitation ◽  
Nutrient Concentrations ◽  
Available Phosphorus ◽  
Mean Annual Temperature

Abstract Background: Soil nutrients play critical roles in regulating and improving the sustainable development of economic forests. Consequently, an elucidation of the spatial patterns and drivers of soil nutrients in these forests is fundamental to their management. For this study, we collected 314 composite soils at a 0-30 cm depth from a typical hickory plantation in Lin 'an, Zhejiang Province, China. We determined the concentrations of macronutrients (i.e., soil organic carbon, hydrolyzed nitrogen, available phosphorus, and available potassium) and micronutrients (i.e., iron, manganese, zinc, and copper.) of the soils. We employed random forest analysis to quantify the relative importance of soil-forming factors to predict the soil nutrient concentrations, which could then be extrapolated to the entire hickory region. Results: Random forest models explained 61%–88% of the variations in soil nutrient concentrations. The mean annual temperature and mean annual precipitation were the most important predictor of soil macronutrient and micronutrient concentrations. Moreover, parent material was another key predictor of soil available phosphorus and micronutrient concentrations. Mapping results demonstrated the importance of climate in controlling the spatial distribution of soil nutrient concentrations at finer scales, as well as the effect of parent material, topography, stand structure, and management measures of hickory plantations. Conclusions: Our study highlights the biotic factors, abiotic factors, and management factors control over soil macronutrient and micronutrient concentrations, which have significant implications for the sustainability of soil nutrients in forest plantations.

Sign in / Sign up

Export Citation Format

Share Document