Profundidade de amostragem do solo para avaliação do enxofre disponível em pomar de limão siciliano (Citrus limon Burm.)

Prochnow, Luís Ignácio; Boaretto, Antonio Enedi

doi:10.1590/s0103-90161995000100018

Sci. agric. (Piracicaba, Braz.)

1995

DOI: 10.1590/s0103-90161995000100018

|View full text |Cite

Profundidade de amostragem do solo para avaliação do enxofre disponível em pomar de limão siciliano (Citrus limon Burm.)

Luís Ignácio Prochnow

Antonio Enedi Boaretto

Abstract: Em um Latossolo Vermelho Escuro, textura média, no qual foram estabelecidos diferentes teores de enxofre, através da aplicação de doses crescentes de gesso agrícola (0, 1, 2 e 4 t/ha), estudou-se a profundidade adequada para coleta de amostras de terra para avaliação do S-SO4-2 "disponível" para o limão siciliano (Citrus limon Burm.) enxertado sobre porta enxerto Volkameriano. As quantidades de sulfato no solo, extraídas pelo NH4OAc 0,5 M em HOAc 0,25 M, foram determinadas aos 6, 12 e 24 meses após a aplicação… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2002

2021

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

References 4 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

Assessing Available Soil Sulphur From Phosphogypsum Applications in a No-Till Cropping System

et al. 2014

View full text Add to dashboard Cite

The complex dynamics of the sulphur (S) cycle has prompted several questions concerning its bioavailability and evaluation by different extraction methods, and few studies under field conditions have been performed to elucidate available S on Brazilian soils under no-till (NT) cropping systems. A field experiment examined the effects of phosphogypsum (PG) applications on nutrient uptake and availability of S to maize and wheat crops under an NT system aiming to establish critic levels of S on an Oxisol (clay, kaolinitic, Rhodic Hapludox) in Parana state, Brazil. PG at the rates of 0, 3, 6 and 9 t ha −1 was applied on the surface of the plots in 1998 upon conversion from pasture to an NT cropping system, and in 2004 subplots received either 0 or 6 t ha −1 of PG on the surface. Effects of PG applications on nutrient uptake and available soil SO 4 -S to the maize and wheat crops were evaluated in [2004][2005]. Increasing the surface-applied PG rate in 1998 increased Mg uptake by maize, and N, K, Ca and Mg uptake by wheat plants. Reapplication of PG in 2004 increased the uptake of N and P by maize, and the uptake of N, K, Ca and Mg by wheat plants. The PG rates surface-applied in 1998 have resulted in a long-term residual effect on soil by increasing SO 4 -S in surface and subsoil layers 6.5 and 7.5 years after application, affecting aboveground biomass, S uptake and S content in the leaves of the wheat crop. The reapplication of PG in 2004 increased maize S uptake, S content in leaves and grains and S exported by maize harvest, and increased wheat aboveground biomass, S uptake and S content in leaves. These effects were due to increasing available soil SO 4 -S from different depths extracted by 0.5 M ammonium acetate (NH 4 OAc) along with 0.25 M acetic acid (HOAc) and 0.01 M calcium phosphate (Ca(H 2 PO 4 ) 2 ). Both extractants were very similar in their ability to assess available soil S in these crops, and the 0-0.20-m layer is shown to be adequate for evaluating the concentration of available SO 4 -S in maize and wheat cultivated under NT.

show abstract

Assessing Available Soil Sulphur From Phosphogypsum Applications in a No-Till Cropping System

et al. 2014

View full text Add to dashboard Cite

show abstract

Effects of gypsum on growth and nutrient status of forage grasses cultivated between the rows of organically grown Satsuma mandarin in an Oxisol from subtropical Brazil

Korzune

Ávila

Botelho

et al. 2021

Crop & Pasture Science

View full text Add to dashboard Cite

Gypsum (CaSO4.2H2O) decreases the harmful effect of soil acidity on plants and provides calcium (Ca) and sulfur (S) for plant nutrition. Setaria grass (Setaria anceps Stapf) and black oat (Avena strigosa Schreb.) are forage grasses that are tolerant of low soil fertility and may be suitable as inter-row crops for Satsuma mandarin (Citrus unshiu Marc.) grown organically on Oxisol soils, which may suffer low native fertility and high acidity. We evaluated the effect of gypsum application to a low fertility soil from subtropical Brazil on soil chemical fertility, growth and plant nutrition of Satsuma mandarin, and plant biomass yield and soil nutrient extraction of setaria grass and black oat cultivated between the orchard rows, in the absence of soluble industrial (NPK) fertilisers. The entire experimental field was limed, and ground natural phosphate rock was applied. During planting of the Satsuma mandarin, organic manure and ground natural phosphate rock were mixed with soil and placed in each planting hole. Two agricultural gypsum treatments were applied: one without gypsum (control), and the other with gypsum at 6 tha−1. After 12months, gypsum reduced the level of aluminium (Al3+) and increased Ca2+ at soil depth 0–40cm, and increased S-SO42− at soil depth 0–60cm. Other soil chemical components (pH, phosphorus, potassium, magnesium and micronutrients) were not affected by gypsum application. Gypsum did not affect growth of Satsuma mandarin, but increased leaf S concentration. Between the rows, gypsum decreased nitrogen extraction by setaria grass and increased Ca and S extractions by black oat. Biomass yield and nutrient extraction by the studied forage grasses were satisfactory, considering the poor soil fertility conditions. Setaria grass exhibited higher efficiency in recycling nutrients from the chemically poor soils than black oat. In general, setaria grass and black oat can be used as inter-row forage grasses for organic orchards of Satsuma mandarin, where there are restrictions on use of soluble industrial fertilisers.

show abstract

Analysis of Citrus Orchard Efficiency in Relation to Soil Properties

Srivastava

Singh

2007

Journal of Plant Nutrition

View full text Add to dashboard Cite

Orchard efficiency (OE) is one of the indices of evaluating the sustainability in production behavior of citrus orchards. A wide range of soil properties broadly categorized into particle size distribution, water soluble and exchangeable cations, and soil available nutrients were investigated in relation to efficiency of Nagpur mandarin (Citrus reticulata Blanco) orchards established on smectite rich three soil orders (Entisols, Inceptisols, and Vertisols) representing 18 locations of central India. The soil properties, viz., free calcium carbonate (CaCO 3 ), clay content, water soluble-and exchangeable-calcium (Ca 2+ ), available nitrogen (N), phosphorus (P), and zinc (Zn) contributed significantly towards variation in OE. The threshold limit of these limiting soil properties was further established using multivariate quadratic regression models as: 132.1 g kg −1 free CaCO 3 , 418.1 g kg −1 clay, 149.9 mg L −1 water soluble Ca 2+ , 25.9 cmol(p + ) kg −1 exchangeable Ca 2+ , 114.6 mg kg −1 available N, 12.8 mg kg −1 available P, and 0.96 mg kg −1 available Zn in relation to optimum OE of 82.1%. These reference values were very close to those obtained from best fit models, and could be effectively utilized in addressing soil related production constraints for precision-aided citriculture.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

334 Leonard St

Brooklyn, NY 11211

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Profundidade de amostragem do solo para avaliação do enxofre disponível em pomar de limão siciliano (Citrus limon Burm.)

Cited by 5 publications

References 4 publications

Assessing Available Soil Sulphur From Phosphogypsum Applications in a No-Till Cropping System

Assessing Available Soil Sulphur From Phosphogypsum Applications in a No-Till Cropping System

Effects of gypsum on growth and nutrient status of forage grasses cultivated between the rows of organically grown Satsuma mandarin in an Oxisol from subtropical Brazil

Analysis of Citrus Orchard Efficiency in Relation to Soil Properties

Contact Info

Product

Resources

About