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.

Studies on some deep sandy soils in Cape York Peninsula, North Queensland. 1. Morphological and chemical characteristics

1973 ◽  
Vol 13 (60) ◽  
pp. 81 ◽  
Author(s):  
RF Isbell ◽  
GP Gillman
Keyword(s):  
Chemical Properties ◽  
Sandy Soils ◽  
Nutrient Status ◽  
Exchangeable Cations ◽  
Soil Sampling ◽  
Granitic Rocks ◽  
Chemical Characteristics ◽  
Plant Nutrient ◽  
Copper Zinc ◽  
Cape York

Deep sandy soils overlying granitic rocks are widespread in Cape York Peninsula. Rainfall is summer dominant and the annual mean is 1140 mm. Evidence is presented that some of the soils are weakly podzolised and some soil properties are influenced by an underlying clay horizon at depth. The method of soil sampling adopted permits a statistical estimate of the variability of soil chemical properties. Most data for the surface soils of this group have a sufficiently low variability both within and between sites to allow an assessment of plant nutrient status derived from associated experiments in field and glasshouse to be generally applicable throughout the region. All soils are very low in organic carbon, nitrogen, potassium, sulphur, phosphorus, copper, zinc, and exchangeable cations.

Plant nutrition studies on some yellow and red earth soils in northern Cape York Peninsula. 3. Effects of liming and placement on responses to applied phosphorus

1979 ◽  
Vol 19 (100) ◽  
pp. 583 ◽  
Author(s):  
ME Probert ◽  
WH Winter ◽  
RK Jones
Keyword(s):  
High Capacity ◽  
Response Curves ◽  
High Sorption Capacity ◽  
Pot Experiments ◽  
Exchangeable Al ◽  
Extractable P ◽  
Northern Cape ◽  
High Sorption ◽  
Red Earth ◽  
Cape York

The yellow earth soils in northern Cape York Peninsula are extremely low in both total and extractable P and require large additions of phosphorus for maximum pasture yields. The reasons for this high requirement and the results of various attempts to modify it are reported in this paper. Laboratory studies showed that the soils have a high capacity to sorb P and that exchangeable A1 was high, relative to the other cations. Various liming treatments were therefore tested to see what effect reducing the level of exchangeable Al in the soil had on the shape of the P response curves. In two pot experiments there were moderate responses in dry matter yield of Stylosanthes guianensis, cv. Cook, to low rates of lime (500 kg ha-1 on an area basis). The responses were larger where sodium rather than calcium phosphate was the source of the P. In the field, the response of this legume to liming was quite small and not significant by the second year. Only in one of the pot experiments was there evidence that liming reduced the requirement for P.As expected for a soil with a high sorption capacity, responses to placement of phosphate were found in pots; in the field, however, no worthwhile benefits were obtained from placement

Fertility of a red earth soil of Mid-Cape York Peninsula

1987 ◽  
Vol 27 (6) ◽  
pp. 863 ◽  
Author(s):  
MA Gilbert ◽  
KA Shaw
Keyword(s):  
Field Experiments ◽  
Elemental Sulfur ◽  
Nutrient Status ◽  
Field Conditions ◽  
Maximum Response ◽  
Sulfur Source ◽  
Single Superphosphate ◽  
Red Earth ◽  
Cape York ◽  
Stylosanthes Scabra

The nutrient status and fertiliser requirements of a red earth soil (Gn 2.14) were examined in glasshouse and field experiments in northern Queensland. From soil analyses and glasshouse experiments, deficiencies of phosphorus, potassium, sulfur and zinc were expected. However, the only nutrients limiting growth of Stylosanthes scabra cv. Seca pastures under field conditions were phosphorus and sulfur. In the first 2 years of the field experiments, applications of 20 kg/ha of phosphorus and sulfur (equivalent to 220 kg/ha of single superphosphate) gave near maximum response in DM yield of Seca. Fine elemental sulfur was as effective as gypsum as a sulfur source.

scholarly journals Effects of serpentinite fertilizer on the chemical properties and enzyme activity of young spruce soils

2016 ◽  
Vol 30 (4) ◽  
pp. 401-414 ◽  
Author(s):  
Ewa Błońska ◽  
Kazimierz Januszek ◽  
Stanisław Małek ◽  
Tomasz Wanic
Keyword(s):  
Enzyme Activity ◽  
Chemical Properties ◽  
Molar Ratio ◽  
Tree Roots ◽  
Forest Zone ◽  
Negative Effect ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus ◽  
Experimental Plots

AbstractThe experimental plots used in the study were located in the middle forest zone (elevation: 900-950 m a.s.l.) on two nappes of the flysch Carpathians in southern Poland. The aim of this study was to assess the effects of serpentinite in combination with nitrogen, phosphorus, and potassium fertilizers on selected chemical properties of the soil and activity of dehydrogenase and urease in the studied soils. All fertilizer treatments significantly enriched the tested soils in magnesium. The use of serpentinite as a fertilizer reduced the molar ratio of exchangeable calcium to magnesium, which facilitated the uptake of magnesium by tree roots due to competition between calcium and magnesium. After one year of fertilization on the Wisła experimental plot, the pH of the Ofh horizon increased, while the pH of the mineral horizons significantly decreased. Enrichment of serpentinite with nitrogen, phosphorus, and potassium fertilizers stimulated the dehydrogenase activity in the studied organic horizon. The lack of a negative effect of the serpentinite fertilizer on enzyme activity in the spruce stand soil showed that the concentrations of the heavy metals added to the soil were not high enough to be toxic and indicated the feasibility of using this fertilizer in forestry.

scholarly journals Effect of Mosses on physical and chemical properties of soil in temperate forests of Garhwal Himalayas

2021 ◽  
pp. 1-10
Author(s):  
Anshu Siwach ◽  
Siddhartha Kaushal ◽  
Ratul Baishya
Keyword(s):  
Physical Properties ◽  
Chemical Properties ◽  
Nutrient Status ◽  
High Rate ◽  
Physical And Chemical Properties ◽  
Garhwal Himalayas ◽  
Forest Sites ◽  
Significant Difference ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Mosses are one of the most important and dominant plant communities, especially in the temperate biome, and play a significant role in ecosystem function and dynamics. They influence the water, energy and element cycle due to their unique ecology and physiology. The present study was undertaken in three different temperate forest sites in the Garhwal Himalayas, viz., Triyuginarayan (Kedarnath Wildlife Sanctuary (KWLS)), Chakrata, and Kanasar forest range. The study was focused on understanding the influence of mosses on soil physical properties and nutrient availability. Different physico-chemical properties were analysed under two different substrata, that is, with and without moss cover in two different seasons, viz., monsoon and winter. We observed mosses to influence and alter the physical properties and nutrient status of soil in both seasons. All soil physical and chemical properties, except magnesium, showed significant difference within the substrates, among all the sites and across the two seasons. Besides the soil characteristics underneath the moss vegetation, the study also highlights the diversity of mosses found in the area. Mosses appear to create high nutrient microsites via a high rate of organic matter accumulation and retain nutrients for longer periods thus, maintaining ecosystem stability.

scholarly journals Coapplication of Chicken Litter Biochar and Urea Only to Improve Nutrients Use Efficiency and Yield ofOryza sativaL. Cultivation on a Tropical Acid Soil

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Ali Maru ◽  
Osumanu Ahmed Haruna ◽  
Walter Charles Primus
Keyword(s):  
Acid Soil ◽  
Nutrient Use Efficiency ◽  
Chemical Properties ◽  
Acid Soils ◽  
Field Trials ◽  
Soil Chemical Properties ◽  
Nutrient Use ◽  
Chicken Litter ◽  
Rice Yields ◽  
Use Efficiency

The excessive use of nitrogen (N) fertilizers in sustaining high rice yields due to N dynamics in tropical acid soils not only is economically unsustainable but also causes environmental pollution. The objective of this study was to coapply biochar and urea to improve soil chemical properties and productivity of rice. Biochar (5 t ha−1) and different rates of urea (100%, 75%, 50%, 25%, and 0% of recommended N application) were evaluated in both pot and field trials. Selected soil chemical properties, rice plants growth variables, nutrient use efficiency, and yield were determined using standard procedures. Coapplication of biochar with 100% and 75% urea recommendation rates significantly increased nutrients availability (especially P and K) and their use efficiency in both pot and field trials. These treatments also significantly increased rice growth variables and grain yield. Coapplication of biochar and urea application at 75% of the recommended rate can be used to improve soil chemical properties and productivity and reduce urea use by 25%.

TO THE QUESTION OF INDUSTRIAL AEROSOL CONTROL IN THE PROCESSING OF BLISTER COPPER

2021 ◽  
Author(s):  
O.G. Drugova ◽  
◽  
A.A. Fedoruk ◽  
T.N. Shtin
Keyword(s):  
Chemical Properties ◽  
The Body ◽  
Industrial Control ◽  
Silicon Iron ◽  
Carcinogenic Effect ◽  
Copper Zinc ◽  
Toxic Potential ◽  
Physical And Chemical ◽  
Industrial Aerosol ◽  
And Chemical Properties

Abstract. Due to the predominance of PM1 particles in the air samples, the following metals were found in the aerosol: copper, zinc, silicon, iron, lead, sulfur, arsenic, aluminum, antimony, tin, magnesium, cadmium and several other metals. The content of sulfates was significantly noted. These physical and chemical properties show a considerable toxic potential of industrial aerosol. The MPC of lead, sulfur and silicon dioxides, as well as nitrogen oxides and formaldehyde were detected in the working air. Meanwhile, copper, zinc, and iron did not exceed their MPC. Moreover, an underestimation of the aerosol was observed within the framework of industrial control. It has been found that the aerosol components may have an irritating, reprotoxic, allergenic, and carcinogenic effect on the body. Further consideration of the dispersed and chemical composition of the aerosol is required to determine the concentration of identified substances in the working air and the limiting components determining its biological effect.

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