Studies on some neutral red duplex soils (Dr 2.12) in north-eastern Queensland. 2. Glasshouse assessment of plant nutrient status

1971 ◽  
Vol 11 (50) ◽  
pp. 336 ◽  
Author(s):  
BJ Crack
Keyword(s):  
Zinc Deficiency ◽  
Nutrient Status ◽  
Neutral Red ◽  
Plant Nutrient ◽  
Factorial Experiments ◽  
Nutrient Interactions ◽  
Sulphur Deficiency ◽  
Stylosanthes Humilis ◽  
North Eastern ◽  
Test Plants

Glasshouse experiments using the subtractive technique were conducted on 15 neutral red duplex soils from north-eastern Queensland. On two of the soils factorial experiments were conducted to obtain information on nutrient interactions. The legumes Phaseolus lathyroides and Stylosanthes humilis were used as test plants. All soils were deficient in phosphorus, sulphur, and molybdenum, although the magnitude of the various deficiencies often differed between soils. Yields of plants were well correlated with phosphorus extracted from the soils by 0.01 N.H,SO, and by 0.5 M. Na HCO3. Soil tests used were unsatisfactory indices of sulphur deficiency. A possible zinc deficiency was indicated.

Studies on some solodic soils in north-eastern Queensland. 2. Glasshouse assessment of plant nutrient status

1970 ◽  
Vol 10 (44) ◽  
pp. 342 ◽  
Author(s):  
RK Jones ◽  
BJ Crack
Keyword(s):  
Nutrient Status ◽  
Factorial Experiments ◽  
Nutrient Interactions ◽  
Dual Effect ◽  
Soil Potassium ◽  
Stylosanthes Humilis ◽  
Lime Sulphur ◽  
North Eastern ◽  
Main Effects ◽  
Test Plants

Glasshouse experiments using the subtractive technique were undertaken to assess the nutrient status of a number of solodic soils in north-eastern Queensland. On two of the soils factorial experiments were conducted to obtain more information on nutrient interactions. The legumes, Phaseolus /athyroides and Stylosanthes humilis, were used as test plants. Omission of phosphorus severely depressed yield on all soils. This deficiency was usually corrected by applications of superphosphate equivalent to 670 lb an acre. Omission of sulphur and molybdenum also depressed yields in all except one soil. Soil potassium values were low on several soils and the omission of potassium from these gave lower yields. In the factorial experiments the lime, sulphur, and molybdenum main effects and interactions were generally significant. Lime appeared to be having the dual effect of enhancing the availability from the soil of both sulphur and molybdenum. There was some evidence of slight zinc deficiency on several soils and further investigation is required on this aspect.

Studies on some neutral red duplex soils (Dr 2.12) in north-eastern Queensland. 1. Morphological and chemical characteristics

1971 ◽  
Vol 11 (50) ◽  
pp. 328
Author(s):  
BJ Crack ◽  
RF Isbell
Keyword(s):  
Chemical Properties ◽  
Summer Rainfall ◽  
Nutrient Status ◽  
Neutral Red ◽  
Available Phosphorus ◽  
Red Clay ◽  
High Accumulation ◽  
North Eastern ◽  
Low Nitrogen

Morphological and chemical data are presented for neutral red duplex soils (Dr2.12) derived from granodiorite and diorite in north-eastern Queensland under a strongly seasonal summer rainfall. Mean annual totals range from about 24 inches (610 mm) to nearly 40 inches (1000 mm). The soils have slightly acid loamy A, horizons which overlie structured red clay B horizons of slightly acid to neutral reaction. C horizons containing much weathered rock occur at 50-70 cm and continue to depths exceeding two metres. Profiles show a consistent trend for many chemical properties ; a particular feature being the relatively high accumulation of phosphorus in the C horizon. Certain chemical analyses of surface soils are sufficiently consistent within and between sites to provide a broad regional characterization of plant nutrient status. The soils of the Charters Towers region have low nitrogen, organic carbon, and available phosphorus contents but potassium levels are moderate. Home Hill-Bowen soils are more variable but indicate generally higher fertility levels.

Plant nutrient status of soils of the Atherton Tableland, North Queensland

1972 ◽  
Vol 12 (59) ◽  
pp. 618 ◽  
Author(s):  
PC Kerridge ◽  
CS Andrew ◽  
GG Murtha
Keyword(s):  
Trifolium Repens ◽  
Nutrient Status ◽  
Parent Material ◽  
Metamorphic Rocks ◽  
Plant Nutrient ◽  
Total Rainfall ◽  
Acid Volcanic ◽  
Order Of Magnitude ◽  
Potassium Response ◽  
Test Plants

The principal soils of the Atherton Tableland are derived from basalt, granite, acid volcanic, and metamorphic rocks. They are predominantly krasnozems with some xanthozems and krasnozem variants. They were assessed for plant nutrient status by means of glasshouse experiments using the legumes Desmodium intortum and Trifolium repens as test plants. The main nutrient responses were, in decreasing order of magnitude, to phosphorus, molybdenum, and potassium. There were also small responses on some soils to sulphur, liming, and, under liming, to zinc. For most of the soils growth was negligible in the absence of added phosphorus. Responses to added molybdenum in the presence of liming indicated gross soil molybdenum deficiency. Potassium response was related to total rainfall except for the soils on metamorphic parent material.

Studies on some neutral red duplex soils (Dr 2.12) in north-eastern Queensland. 3. Availability of phosphorus in the C-horizon

1975 ◽  
Vol 15 (76) ◽  
pp. 689
Author(s):  
ME Probert
Keyword(s):  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Neutral Red ◽  
Available Phosphorus ◽  
Panicum Maximum ◽  
Stylosanthes Humilis ◽  
North Eastern ◽  
Coarse Grains ◽  
Phosphorus Status ◽  
Townsville Stylo

The C horizon phosphorus in neutral red duplex soils derived from granodiorite is shown by electron microprobe analysis to be present as coarse grains of apatite. Glasshouse experiments failed to show any contribution from this phosphorus to the nutrition of the test crops (Townsville stylo Stylosanthes humilis and green panic Panicum maximum). Since this phosphorus is soluble in 0.01 N H2SO4, this extractant grossly overestimated the available phosphorus status whereas extraction with 0.5 M NaHCO3 indicated the non-availability of the C horizon phosphorus in these soils.

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.

Effect of environment and plant phenology on prediction of plant nutrient deficiency using leaf analysis in Leucaena leucocephala

2011 ◽  
Vol 62 (3) ◽  
pp. 248 ◽  
Author(s):  
Alejandro Radrizzani ◽  
Scott A. Dalzell ◽  
H. Max Shelton
Keyword(s):  
Ambient Temperature ◽  
Leucaena Leucocephala ◽  
Nutrient Status ◽  
Plant Phenology ◽  
Chronological Age ◽  
Nutrient Concentrations ◽  
Strongly Correlated ◽  
Plant Nutrient ◽  
Leaf Analysis ◽  
Stage Of Development

Plant analysis is an important tool for predicting plant nutrient imbalances associated with variable soil fertility and it is usually based on analysis of index plant parts such as the youngest fully expanded leaf (YFEL). Recent use of the YFEL to diagnose plant nutrient status of Leucaena leucocephala subsp. glabrata (leucaena) pastures has given unreliable results. Two field trials, one irrigated and one dryland, were conducted in subtropical Queensland to investigate the effect of index leaf selection, plant phenology and environmental factors (ambient temperature and water stress) on leaf nutrient concentrations. The YFEL was identified as the best plant part to sample because it was readily identifiable and had consistent concentrations of most nutrients compared to older and younger leaves provided specific conditions were met when sampling. At both sites there was significant (P < 0.05) seasonal variation in nutrient concentrations in leucaena YFEL, which was poorly correlated with ambient temperature but strongly correlated with rainfall in the preceding 28 days and chronological age of YFEL. Advancing plant phenological stage of development increased the chronological age of YFEL from 12 to 73 days under irrigation since no new leaves were produced for prolonged periods during pod filling and maturation. Similarly, YFEL could be 146 days old on plants in vegetative stages of growth under prolonged drought in dryland conditions. YFEL of ~21 days of age or less were found to be optimal for analysis. Furthermore, as the calcium (Ca) concentration of YFEL was strongly correlated with leaf chronological age, this parameter could be used to determine the age of the leaves sampled. YFEL with Ca concentrations >0.75% DM were likely to be >21 days in age and should not be used for the diagnosis of plant nutrient status. It was concluded that leaf analysis could be used to confidently assess leucaena plant nutrient status provided the YFEL were sampled from actively growing plants in vegetative development that had received rainfall/irrigation in the preceding 28 days and were <21 days of age.

Plant nutrition studies on some yellow and red earth soils in northern Cape York Peninsula. 1. Soils and their nutrient status

1976 ◽  
Vol 16 (81) ◽  
pp. 532 ◽  
Author(s):  
RF Isbell ◽  
RK Jones ◽  
GP Gillman
Keyword(s):  
Chemical Properties ◽  
Acid Soils ◽  
Nutrient Status ◽  
Stylosanthes Humilis ◽  
Northern Cape ◽  
Copper Zinc ◽  
Red Earth ◽  
Cape York ◽  
Nitrogen Phosphorus ◽  
Basic Cations

Eleven complete profiles and an additional 112 surface soils of deep sandy yellow and red earths in the far northern part of Cape York Peninsula have been sampled for laboratory studies. Chemical analyses showed that these acid soils are very low in organic carbon, nitrogen, phosphorus, potassium, sulphur, copper, zinc, manganese, cobalt, exchangeable basic cations, and base saturation. They have relatively high contents of exchangeable aluminium. The variability of surface soil chemical properties is relatively low. Glasshouse experiments with Stylosanthes humilis cv. Gordon conducted on soils from the 11 profile sites showed responses to sulphur, potassium, zinc and lime on all soils and to copper on about half the sites. Considering the results of both the laboratory and glasshouse studies, it is suggested that responses to nitrogen, phosphorus, zinc and probably calcium and copper are likely in the field. Responses to sulphur may be transitory because of the presence of appreciable levels of phosphate-extractable sulphur at depth.

Determination suitable sample method of rose apple (Syzygium jambosL.) for evaluation of plant nutrient status

2018 ◽  
Vol 41 (20) ◽  
pp. 2741-2748 ◽  
Author(s):  
Pongnart Nartvaranant
Keyword(s):  
Nutrient Status ◽  
Plant Nutrient ◽  
Sample Method
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