scholarly journals Determination of Strawberry Nutrient Optimum Ranges through Diagnosis and Recommendation Integrated System Analysis

2013 ◽  
Vol 23 (3) ◽  
pp. 312-318 ◽  
Author(s):  
Thomas G. Bottoms ◽  
Mark P. Bolda ◽  
Mark L. Gaskell ◽  
Timothy K. Hartz
Keyword(s):  
Nutrient Availability ◽  
System Analysis ◽  
Soil Nutrient ◽  
Integrated System ◽  
High Yield ◽  
Nutrient Concentrations ◽  
Soil Nutrient Availability ◽  
Central California ◽  
Optimum Range ◽  
Fruit Harvest

Diagnosis and recommendation integrated system (DRIS) leaf blade and petiole optimum nutrient ranges were developed through tissue sampling in 53 commercial strawberry (Fragaria ×ananassa) fields in the coastal valleys of central California in 2010 and 2011. All fields were in an annual production system using the day-neutral cultivar Albion. Leaf blades and petioles were sampled five times from early flowering through the fruit harvest period. Data on soil nutrient availability and grower fertilization practices were also collected. DRIS analysis was used to develop nutrient optimum ranges based on nutrient concentrations observed in nutritionally balanced, high-yield fields. Blade nitrogen (N), phosphorus (P), and potassium (K) concentrations declined from the vegetative stage until the main harvest period, and stabilized thereafter. Blade calcium (Ca), boron (B), and iron (Fe) increased over time while magnesium (Mg), sulfur (S), manganese (Mn), zinc (Zn), and copper (Cu) decreased. The blade N optimum range was lower than previously published sufficiency ranges during the fruit harvest period, and the Zn optimum range was lower throughout the season. Other nutrients were in general agreement with previously established sufficiency ranges with the exception of Ca, Mn, and Fe, which were higher. Petiole nitrate-nitrogen (NO3-N) was highly variable among high-yield fields, was not correlated with soil NO3-N at any growth stage, and was therefore of limited value as an indicator of crop N status. Comparison of soil nutrient availability with grower fertilization practices suggested that significant improvement in fertilizer management was possible.

scholarly journals Establishing Lettuce Leaf Nutrient Optimum Ranges Through DRIS Analysis

HortScience ◽  
2007 ◽  
Vol 42 (1) ◽  
pp. 143-146 ◽  
Author(s):  
Timothy K. Hartz ◽  
P. R. Johnstone ◽  
E. Williams ◽  
R.F. Smith
Keyword(s):  
Soil Nutrient ◽  
Integrated System ◽  
High Yield ◽  
Nutrient Concentrations ◽  
Fertilizer Management ◽  
Romaine Lettuce ◽  
Soil Nutrient Availability ◽  
Central California ◽  
Leaf Nutrient Concentrations ◽  
Using Data

A survey of 78 commercial iceberg and romaine lettuce (Lactuca sativa L.) fields in the coastal valleys of central California was conducted in 2004–2005. Whole leaf samples were collected at early heading and again within 1 week of harvest. Diagnosis and Recommendation Integrated System (DRIS) leaf concentration norms were calculated for N, P, K, Ca, Mg, S, B, Zn, Mn, Fe, and Cu. Iceberg and romaine lettuce had sufficiently similar leaf nutrient concentrations that the data were combined in the DRIS calculations. Optimum leaf nutrient ranges were developed using data from high-yield fields in which all nutrients were in balance according to the DRIS approach. The DRIS-derived optimum ranges for K and Ca were substantially lower than previously published leaf sufficiency ranges, whereas for the other nutrients, the DRIS optimum ranges were in close agreement. Cu was the nutrient most frequently below the optimum range in low-yield fields. Comparison of leaf nutrient concentrations with soil nutrient availability and grower fertilization practices suggested that significant improvement in fertilizer management was possible.

Nutrient fluxes in litterfall and decomposition in four forests along a gradient of soil fertility in southern Ohio

1984 ◽  
Vol 14 (6) ◽  
pp. 794-802 ◽  
Author(s):  
Ralph E. J. Boerner
Keyword(s):  
Soil Fertility ◽  
Nutrient Availability ◽  
Soil Nutrient ◽  
Nutrient Concentrations ◽  
Strongly Correlated ◽  
Nitrogen And Phosphorus ◽  
Soil Nutrient Availability ◽  
Nutrient Mineralization ◽  
Nutrient Levels ◽  
Fertility Gradient

To determine how soil nutrient availability influences nutrient cycling, fluxes of nutrients through litterfall and decomposition were determined for four forest stands similar in all respects except soil nutrient availability and microclimate, within Neotoma Valley, a small watershed in southern Ohio, U.S.A. Litterfall varied from 10 to 60% among sites while nutrient concentrations and masses in new leaf litter varied as a function of extractable soil nutrient levels. Mass loss from litterbags was significantly higher in more fertile sites. Stepwise regression indicated that initial litter nitrogen and phosphorus concentrations were strongly correlated with relative decomposition rate while lignin concentration and microclimate variables were only correlated weakly. Thus, both litterfall nutrient transfers and decomposition rates were under the control of soil nutrient levels. Nitrogen was immobilized in litter at all sites during the 1st year of decay; litter from more fertile sites mineralized nitrogen during the 2nd year, while that from less fertile sites continued to immobilize nitrogen. Phosphorus and calcium mineralization rates were strongly correlated with the availability of these elements in the soil. Magnesium and potassium were leached rapidly from litter; amounts mineralized were correlated with amounts in litterfall. Interrelations among soil fertility, litterfall, and nutrient mineralization, as well as litter redistribution, are discussed as processes important in the development and maintenance of the soil fertility gradient in this watershed.

scholarly journals One Year Residual Effect of Sewage Sludge Biochar as a Soil Amendment for Maize in a Brazilian Oxisol

2021 ◽  
Vol 13 (4) ◽  
pp. 2226
Author(s):  
Joisman Fachini ◽  
Thais Rodrigues Coser ◽  
Alyson Silva de Araujo ◽  
Ailton Teixeira do Vale ◽  
Keiji Jindo ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Grain Yield ◽  
Nutrient Availability ◽  
Pyrolysis Temperature ◽  
Residual Effect ◽  
Soil Nutrient ◽  
Mineral Fertilizer ◽  
Corn Yield ◽  
Soil Nutrient Availability ◽  
One Year

The thermochemical transformation of sewage sludge (SS) to biochar (SSB) allows exploring the advantages of SS and reduces possible environmental risks associated with its use. Recent studies have shown that SSB is nutrient-rich and may replace mineral fertilizers. However, there are still some questions to be answered about the residual effect of SSB on soil nutrient availability. In addition, most of the previous studies were conducted in pots or soil incubations. Therefore, the residual effect of SSB on soil properties in field conditions remains unclear. This study shows the results of nutrient availability and uptake as well as maize yield the third cropping of a three-year consecutive corn cropping system. The following treatments were compared: (1) control: without mineral fertilizer and biochar; (2) NPK: with mineral fertilizer; (3) SSB300: with biochar produced at 300 °C; (4) SSB300+NPK; (5) SSB500: with biochar produced at 500 °C; and (6) SSB500+NPK. The results show that SSB has one-year residual effects on soil nutrient availability and nutrient uptake by maize, especially phosphorus. Available soil P contents in plots that received SSB were around five times higher than the control and the NPK treatments. Pyrolysis temperature influenced the SSB residual effect on corn yield. One year after suspending the SSB application, SSB300 increased corn yield at the same level as the application of NPK. SSB300 stood out and promoted higher grain yield in the residual period (8524 kg ha−1) than SSB500 (6886 kg ha−1). Regardless of pyrolysis temperature, biochar boosted the mineral fertilizer effect resulting in higher grain yield than the exclusive application of NPK. Additional long-term studies should be focused on SSB as a slow-release phosphate fertilizer.

Nutrient use strategy and not competition determines native and invasive species response to changes in soil nutrient availability

2021 ◽  
Author(s):  
Amanda E. Knauf ◽  
Creighton M. Litton ◽  
Rebecca J. Cole ◽  
Jed P. Sparks ◽  
Christian P. Giardina ◽  
...  
Keyword(s):  
Invasive Species ◽  
Nutrient Availability ◽  
Soil Nutrient ◽  
Soil Nutrient Availability ◽  
Species Response ◽  
Nutrient Use

Conocarpus Biochar Induces Changes in Soil Nutrient Availability and Tomato Growth Under Saline Irrigation

Pedosphere ◽  
2016 ◽  
Vol 26 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Adel Rabie A. USMAN ◽  
Mohammad I. AL-WABEL ◽  
Yong S. OK ◽  
Abdulaziz AL-HARBI ◽  
Mahmoud WAHB-ALLAH ◽  
...  
Keyword(s):  
Nutrient Availability ◽  
Soil Nutrient ◽  
Soil Nutrient Availability ◽  
Saline Irrigation ◽  
Tomato Growth

Does soil nutrient availability influence night-time water flux of aspen saplings?

2012 ◽  
Vol 82 ◽  
pp. 37-42 ◽  
Author(s):  
Priit Kupper ◽  
Gristin Rohula ◽  
Liina Saksing ◽  
Arne Sellin ◽  
Krista Lõhmus ◽  
...  
Keyword(s):  
Nutrient Availability ◽  
Water Flux ◽  
Soil Nutrient ◽  
Night Time ◽  
Soil Nutrient Availability

Logging impacts on the biogeochemistry of boreal forest soils and nutrient export to aquatic systems: A review

2008 ◽  
Vol 16 (NA) ◽  
pp. 157-179 ◽  
Author(s):  
David P. Kreutzweiser ◽  
Paul W. Hazlett ◽  
John M. Gunn
Keyword(s):  
Boreal Forest ◽  
Nutrient Availability ◽  
Soil Nutrient ◽  
Soil Conditions ◽  
Soil Nutrient Availability ◽  
Clear Cutting ◽  
Partial Harvest ◽  
Forest Watersheds ◽  
Logging Impacts ◽  
Receiving Waters

Logging disturbances in boreal forest watersheds can alter biogeochemical processes in soils by changing forest composition, plant uptake rates, soil conditions, moisture and temperature regimes, soil microbial activity, and water fluxes. In general, these changes have often led to short-term increases in soil nutrient availability followed by increased mobility and losses by leaching to receiving waters. Among the studies we reviewed, dissolved organic carbon (DOC) exports usually increased after logging, and nitrogen (N) mineralization and nitrification often increased with resulting increased N availability and exports to receiving waters. Similar processes and responses occurred for phosphorus (P), but to a lesser extent than for N. In most cases, base cations were released and exported to receiving waters after logging. Several studies demonstrated that stem-only or partial-harvest logging reduced the impacts on nutrient release and exports in comparison to whole-tree clear-cutting. Despite these logging-induced increases in soil nutrient availability and movement to receiving waters, most studies reported little or no change in soil chemical properties. However, responses to logging were highly variable and often site specific. The likelihood, extent and magnitude of logging impacts on soil nutrient cycling and exports in boreal forest watersheds will be dependent on soil types, stand and site conditions, hydrological connectivity, post-logging weather patterns, and type and timing of harvest activities. Additionally, logging impacts can interact with, and be confounded by, atmospheric pollutant deposition and climate change. Further watershed-level empirical studies and modeling efforts are required to elucidate these interactions, to improve predictive capabilities, and to advance forest management guidelines for sustaining forest soil productivity and limiting nutrient exports.

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