Factors of plant nutrient availability relevant to soil testing

1982 ◽  
Vol 64 (1) ◽  
pp. 129-138 ◽  
Author(s):  
K. Mengel
Keyword(s):  
Nutrient Availability ◽  
Soil Testing ◽  
Plant Nutrient

scholarly journals Seasonal variation in AMF colonisation, soil and plant nutrient content in gypsum specialist and generalist species growing in P-poor soils

2021 ◽  
Author(s):  
Andreu Cera ◽  
Estephania Duplat ◽  
Gabriel Montserrat-Martí ◽  
Antonio Gómez-Bolea ◽  
Susana Rodríguez-Echeverría ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Nutrient Availability ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Nutrient Content ◽  
P Availability ◽  
Plant Nutrient ◽  
Rhizospheric Soil ◽  
Soil Nutrient Availability ◽  
Generalist Species

Abstract Aims Gypsum soils are P-limited atypical soils that harbour a rich endemic flora. These singular soils are usually found in drylands, where plant activity and soil nutrient availability are seasonal. No previous studies have analysed the seasonality of P nutrition and its interaction with the arbuscular mycorrhiza fungi (AMF) colonisation in gypsum plants. Our aim was to evaluate the seasonal changes in plant nutrient status, AMF colonisation and rhizospheric soil nutrient availability in gypsum specialist and generalist species. Methods We evaluated seasonal variation in the proportion of root length colonised by AMF structures (hyphae, vesicules and arbuscules), plant nutrient status (leaf C, N and P and fine root C and N) and rhizospheric soil content (P, organic matter, nitrate and ammonium) of three gypsum specialists and two generalists throughout a year. Results All species showed arbuscules within roots, including species of Caryophyllaceae and Brassicaceae. Root colonisation by arbuscules (AC) was higher in spring than in other seasons, when plants showed high leaf P-requirements. Higher AC was decoupled from inorganic N and P availability in rhizospheric soil, and foliar nutrient content. Generalists showed higher AC than specialists, but only in spring. Conclusions Seasonality was found in AMF colonisation, rhizospheric soil content and plant nutrient status. The mutualism between plants and AMF was highest in spring, when P-requirements are higher for plants, especially in generalists. However, AMF decoupled from plant demands in autumn, when nutrient availability increases in rhizospheric soil.

scholarly journals Plant–herbivore–decomposer stoichiometric mismatches and nutrient cycling in ecosystems

2013 ◽  
Vol 280 (1754) ◽  
pp. 20122453 ◽  
Author(s):  
Mehdi Cherif ◽  
Michel Loreau
Keyword(s):  
Nutrient Availability ◽  
Conceptual Models ◽  
Nutrient Content ◽  
Major Influence ◽  
Plant Nutrient ◽  
Nutrient Contents ◽  
Nutrient Excretion ◽  
Plant Herbivore ◽  
The Impact ◽  
The Relationship

Plant stoichiometry is thought to have a major influence on how herbivores affect nutrient availability in ecosystems. Most conceptual models predict that plants with high nutrient contents increase nutrient excretion by herbivores, in turn raising nutrient availability. To test this hypothesis, we built a stoichiometrically explicit model that includes a simple but thorough description of the processes of herbivory and decomposition. Our results challenge traditional views of herbivore impacts on nutrient availability in many ways. They show that the relationship between plant nutrient content and the impact of herbivores predicted by conceptual models holds only at high plant nutrient contents. At low plant nutrient contents, the impact of herbivores is mediated by the mineralization/immobilization of nutrients by decomposers and by the type of resource limiting the growth of decomposers. Both parameters are functions of the mismatch between plant and decomposer stoichiometries. Our work provides new predictions about the impacts of herbivores on ecosystem fertility that depend on critical interactions between plant, herbivore and decomposer stoichiometries in ecosystems.

scholarly journals Sugarcane Plant Nutrient Diagnosis

EDIS ◽  
2006 ◽  
Vol 2006 (14) ◽  
Author(s):  
J. Mabry McCray ◽  
Ike V. Ezenwa ◽  
Ronald W. Rice ◽  
Timothy A. Lang
Keyword(s):  
Critical Values ◽  
Soil Testing ◽  
Plant Nutrient ◽  
Visual Evaluation ◽  
Nutrient Analysis ◽  
Sugarcane Plant ◽  
Testing Program ◽  
Fact Sheet ◽  
Field Identification

SC075, a 25-page fact sheet by J. Mabry McCray, Ike V. Ezenwa, Ronald W. Rice and Timothy A. Lang, describes how growers can use leaf nutrient analysis in combination with visual evaluation of malnutrition symptoms to complement a consistent soil testing program and make improved decisions regarding fertilization. Includes references, table of sugarcane leaf nutrient critical values and optimum ranges, and 43 color figures to assist with field identification of nutritional problems. Published by the UF Agronomy Department, July 2006. SS-AGR-128/SC075: Sugarcane Plant Nutrient Diagnosis (ufl.edu)

Can the shrub Chromolaena odorata (Asteraceae) be considered as improving soil biology and plant nutrient availability?

2012 ◽  
Vol 85 (2) ◽  
pp. 233-245 ◽  
Author(s):  
Armand W. Koné ◽  
Ettien F. Edoukou ◽  
Jean T. Gonnety ◽  
Aurélie N. A. N’Dri ◽  
Laurenza F. E. Assémien ◽  
...  
Keyword(s):  
Nutrient Availability ◽  
Soil Biology ◽  
Plant Nutrient ◽  
Chromolaena Odorata

Plant Nutrient Availability in Soils

1969 ◽  
Vol 19 (2-3) ◽  
pp. 135-140 ◽  
Author(s):  
C. G. Lamm ◽  
J. Chr. Tjell ◽  
O. M⊘ller ◽  
T. F. Christiansen
Keyword(s):  
Nutrient Availability ◽  
Plant Nutrient
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