Soil sampling strategy in areas of difficult acess using the cLHS method

Phosphorus (P) is an essential nutrient for grassland production systems. However, continuous applications of P fertilizers result in soil P accumulations, increasing the risk of P losses in runoff and erosion. This study aims to investigate the field-scale variability of soil-test P (STP) in two contrasting grassland fields using descriptive statistics and geostatistics for accurate recommendations on soil sampling strategy and sustainable approaches to P management. A young grassland (YG; 2 years) and an old grassland (OG; 10 years under permanent pasture) were classified as humo-ferric podzol and received organic fertilizers. Soil samples were collected in 16-m by 16-m triangular grids at two depths (0–5 and 5–20 cm). They were analyzed for available P and other soil elements extracted using the Mehlich-3 method (M3). The agri-environmental P saturation index (P/Al)M3 was calculated. Phosphorus accumulation was observed in OG (0–5 cm) as a result of long-term manure applications. Repeated applications of organic fertilizers can impact the long-term buildup of soil P, thus decreasing soil P va-riability and spatial dependence in permanent grasslands. A soil sampling strategy focusing on the 0–5 cm layer should be retained in permanent grasslands for sustainable P recommendations in Eastern Canada.

Download Full-text

Impact of a soil sampling strategy on the spatial distribution and diversity of arbuscular mycorrhizal communities at a small scale in two winter cover crop rotational systems

Annals of Microbiology ◽

10.1007/s13213-014-0942-8 ◽

2014 ◽

Vol 65 (2) ◽

pp. 985-993 ◽

Cited By ~ 4

Author(s):

Masao Higo ◽

Katsunori Isobe ◽

Moe Yamaguchi ◽

Yoichi Torigoe

Keyword(s):

Spatial Distribution ◽

Cover Crop ◽

Sampling Strategy ◽

Arbuscular Mycorrhizal ◽

Soil Sampling ◽

Small Scale ◽

Winter Cover Crop ◽

Rotational Systems ◽

Winter Cover

Download Full-text

A Framework for Optimization of Soil Sampling Strategy and Soil Remediation Scenario Decisions Using Moving Window Kriging

geoENV I — Geostatistics for Environmental Applications - Quantitative Geology and Geostatistics ◽

10.1007/978-94-017-1675-8_22 ◽

1997 ◽

pp. 259-270 ◽

Cited By ~ 3

Author(s):

C. F. Van Tooren ◽

M. Mosselman

Keyword(s):

Soil Remediation ◽

Sampling Strategy ◽

Soil Sampling ◽

Moving Window

Download Full-text

DISTRIBUIÇÃO HORIZONTAL DA FERTILIDADE DO SOLO EM SISTEMAS DE TRÁFEGO CONTROLADO COM FERTILIZAÇÃO EM LINHA

Nativa ◽

10.31413/nativa.v7i3.7639 ◽

2019 ◽

Vol 7 (3) ◽

pp. 251

Author(s):

Anderson Lange ◽

Rodrigo Sinaidi Zandonadi ◽

Fernando Cesar Gobbi

Keyword(s):

Soil Fertility ◽

Precision Agriculture ◽

Sampling Strategy ◽

Horizontal Distribution ◽

Soil Sampling ◽

Soil Variability ◽

Sampling Strategies ◽

No Till ◽

Harvest Data ◽

Controlled Traffic

Tendo em vista a variabilidade do solo em sistemas de semeadura direta, as dificuldades encontradas pelos produtores em amostrar corretamente o solo principalmente em operações em que se usa o tráfego controlado, o objetivo do trabalho foi avaliar o perfil de distribuição horizontal da fertilidade do solo em torno da linha de semeadura em sistema de produção de soja utilizando a mesma pista de semeadura em sistema de tráfego controlado. Em fevereiro de 2017, após a colheita da soja, em um talhão que os últimos 5 anos se usou a mesma pista de semeadura, o solo foi amostrado sobre a linha de semeadura/fertilização, a 8, 16 e 25 cm (para ambos os lados), na camada de 0-20 cm, num total de seis repetições. Os resultados mostram que há concentração de alguns nutrientes na linha de deposição, principalmente o P, que é um fator altamente positivo, pois reduz a fixação deste elemento. Existe também a acidificação da linha de semeadura devido aos fertilizantes nitrogenados, extração/exportação de cátions e balanço eletroquímico que a planta realiza. Assim recomenda-se observar atentamente o método de adubação da propriedade para definir a melhor estratégia de amostragem de solo, desta forma evitando equívocos de interpretação nos resultados analíticos.Palavras-chave: amostragem de solo, agricultura de precisão, fósforo. HORIZONTAL DISTRIBUTION OF SOIL FERTILITY IN CONTROLLED TRAFFIC FARMING PLANTING OPERATION WITH ROW FERTILIZATION ABSTRACT: Considering the soil variability in no-till system, along with the difficulties encountered by the producers regarding soil sampling strategies, especially in the Controlled Traffic Farming setup where same furrow can be used year after year; the objective of the work was to evaluate soil fertility horizontal profile across the furrow. In February 2017, after the soybean harvest, data was collected in a farm where soybean plating has been taken place using same furrow for at least 5 years. Soil was sampled (0-20 cm layer) at the furrow and at 8, 16 and 25 cm for both sides. A total of six replicates (six different furrows in the field) was collected. The results showed that there is concentration of some nutrients in furrow, mainly P, which is a good aspect, because it reduces the fixation of this element. Therefore, the sampling strategy (furrow + with in the row), is important, independent of the use of precision agriculture (AP) or grids because it can hamper the interpretation of the analytical results, leading in erroneous recommendations. Thus, it is recommended to carefully observe the fertilization method used to define the best soil sampling strategy, thus avoiding misunderstandings in the analytical results.Keywords: soil sampling, precision agriculture, phosphorus.

Download Full-text

Soil Sampling Procedures

EDIS ◽

10.32473/edis-ss667-2020 ◽

2020 ◽

Vol 2020 (1) ◽

Author(s):

Davie Kadyampakeni ◽

Kelly Morgan ◽

Arnold Schumann ◽

Rhuanito Ferrarezi ◽

Jamie D Burrow

Keyword(s):

Soil Sampling ◽

Test Results ◽

Fertilization Program ◽

Fact Sheet ◽

Standard Procedures ◽

Sampling Procedures ◽

Soil And Water

To achieve optimal grove nutrition, citrus growers must test grove soil before beginning any fertilization program. Standard procedures for sampling, preparing, and analyzing soil should be followed for meaningful interpretations of the test results and accurate recommendations. This new two-page fact sheet, published by the UF/IFAS Department of Soil and Water Sciences, provides illustrated soil sampling procedures and tables to aid in basic interpretation of lab results. Written by Davie Kadyampakeni, Kelly Morgan, Arnold Schumann, and Rhuanito S. Ferrarezi.https://edis.ifas.ufl.edu/ss667

Download Full-text

Animals in the sanctuary. Bird bones and eggshell

Opuscula Annual of the Swedish Institutes at Athens and Rome ◽

10.30549/opathrom-12-05 ◽

2019 ◽

pp. 223-231 ◽

Cited By ~ 6

Author(s):

Dale Serjeantson

Keyword(s):

Soil Sampling ◽

Moderate Amount ◽

First Millennium ◽

First Millennium Bc ◽

Significant Addition

Excavations at the Sanctuary of Poseidon at Kalaureia and the application of a systematic soil sampling and water flotation programme led to the collection of a moderate amount for bird bones and eggshell fragments. Their dating in the first millennium BC and their association with cult renders them a significant addition to the extant bird remains record in Greece. In this paper the bird and egg remains are presented in detail by chronological phase and by feature, they are compared with other contemporary assemblages of bird remains, and some commentary is offered on their significance.

Download Full-text