Removal of nutrients due to biomass harvest of Eucalyptus urograndis in different soils: macronutrients

Intensive management of forest stands can increase biomass production, as well as increase the removal of nutrients from the site. This study therefore sought to simulate different harvest intensities and to calculate the nutrient-use efficiency of Eucalyptus urograndis in different types of soil. The study was carried out in a plantation of seven-year-old hybrid E. urograndis in the city of Telêmaco Borba, Paraná, Brazil. The study site included two sub areas with sandy soil and clayey soil (Cambisols Inceptisol and Ferralsols Oxisols, respectively). Using biomass and nutrients stock data, nutrient removal was simulated under five different harvest scenarios. Nutrient-use efficiency was obtained from the relation between the amount of biomass and nutrients of each tree component. Harvesting the whole tree resulted in the removal of approximately 61% of the nutrients from the site in sandy soil, while in clayey soil 57% of the nutrients were removed. With harvesting of only the commercial stemwood, only 22% of the nutrients were removed from the sandy soil, and 21% from the clayey soil. Stemwood was the component that had the highest nutrient-use efficiency values for all the analyzed nutrients. In conclusion, to achieve nutritional sustainability of E. urograndis stands, the best harvesting system involves the removal of only commercial stemwood. For the production of stemwood, sandy soils have a greater biological efficiency of calcium and magnesium when compared to clayey soil.

Download Full-text

Decomposition and Nutrient Releasing of Biochar Compound Materials in Soil with Different Textures

Processes ◽

10.3390/pr9091521 ◽

2021 ◽

Vol 9 (9) ◽

pp. 1521

Author(s):

Chien-Sen Liao ◽

Zheng-Han Xie ◽

Shih-Hao Jien

Keyword(s):

Sandy Soil ◽

Decomposition Rate ◽

Clayey Soil ◽

Nutrient Use Efficiency ◽

Nutrient Release ◽

Nitrogen And Phosphorus ◽

Use Efficiency ◽

Plant Yields ◽

Compound Materials ◽

Second Period

Combining biochar with chemical fertilizers or compost not only improves the shortcomings of biochar’s lack of fertility, but also extends the benefits of the compost. The application of biochar composite materials will be a future agricultural management strategy. In this study bagasse compost was mixed with wood biochar (w/w) at rates of 0% (B), 25% (BC), 50% (BC3), and 100% (no biochar, C) to produce four types of particle biochar compound materials (pBCM). These materials were applied to two types of soil (sandy soil and clayey soil) for a 180-day incubation to determine the decomposition rate and the nutrient release efficiency of the pBCMs. The results showed that C treatment had the highest decomposition rate in both types of soil. Overall, the materials decomposed faster in the sandy soil than in the clayey soil. Plants were grown over two 30-day crop periods. The plant yields of treatments C and BC3 were the highest in the first period and respectively decreased and increased in the second period. The experiment results revealed that in the biochar–compost compounds, compost increased the use efficiency of nitrogen and phosphorus in the soil, and biochar increased the nutrient use efficiency in the second period. These compound materials had greater capacity for long-term supply of nutrients in soil than did single-component ones.

Download Full-text

Tomato Production in Florida Using Fertigation Technology

EDIS ◽

10.32473/edis-hs1392-2020 ◽

2020 ◽

Vol 2020 (5) ◽

Author(s):

Mary Dixon ◽

Guodong Liu

Keyword(s):

Nutrient Use Efficiency ◽

Health Benefits ◽

Vegetable Crop ◽

High Demand ◽

Tomato Production ◽

Nutrient Use ◽

Use Efficiency

Tomato is in high demand because of its taste and health benefits. In Florida, tomato is the number one vegetable crop in terms of both acreage and value. Because of its high value and wide acreage, it is important for tomato production to be efficient in its water and nutrient use, which may be improved through fertigation practices. Therefore, the objective of this new 7-page article is to disseminate research-based methods of tomato production utilizing fertigation to enhance yield and nutrient use efficiency. Written by Mary Dixon and Guodong Liu, and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1392

Download Full-text

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

10.24047/bc10248 ◽

2018 ◽

Vol 102 (4) ◽

pp. 8-10

Author(s):

Fernando García ◽

Andrés Grasso ◽

María González Sanjuan ◽

Adrián Correndo ◽

Fernando Salvagiotti

Keyword(s):

Nutrient Management ◽

Nutrient Use Efficiency ◽

Management Strategies ◽

Crop Productivity ◽

Soil Productivity ◽

Nutrient Use ◽

Grain Crop ◽

Wide Scale ◽

Use Efficiency

Trends over the past 25 years indicate that Argentina’s growth in its grain crop productivity has largely been supported by the depletion of the extensive fertility of its Pampean soils. Long-term research provides insight into sustainable nutrient management strategies ready for wide-scale adoption.

Download Full-text

Improved nutrient management in cereals using Nutrient Expert and machine learning tools: Productivity, profitability and nutrient use efficiency

Agricultural Systems ◽

10.1016/j.agsy.2021.103181 ◽

2021 ◽

Vol 192 ◽

pp. 103181

Author(s):

Jagadish Timsina ◽

Sudarshan Dutta ◽

Krishna Prasad Devkota ◽

Somsubhra Chakraborty ◽

Ram Krishna Neupane ◽

...

Keyword(s):

Machine Learning ◽

Nutrient Management ◽

Nutrient Use Efficiency ◽

Learning Tools ◽

Nutrient Use ◽

Use Efficiency

Download Full-text

Inoculation with isolates of arbuscular mycorrhizal fungi influences growth, nutrient use efficiency and gas exchange traits in micropropagated apple rootstock ‘Marubakaido’

Plant Cell Tissue and Organ Culture (PCTOC) ◽

10.1007/s11240-020-01994-0 ◽

2021 ◽

Author(s):

Murilo Dalla Costa ◽

Tássio Dresch Rech ◽

Silmar Primieri ◽

Bruna Greicy Pigozzi ◽

Simone Silmara Werner ◽

...

Keyword(s):

Gas Exchange ◽

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Nutrient Use Efficiency ◽

Arbuscular Mycorrhizal ◽

Apple Rootstock ◽

Nutrient Use ◽

Use Efficiency

Download Full-text

Common Bean Yield and Zinc Use Efficiency in Association with Diazotrophic Bacteria Co-Inoculations

Agronomy ◽

10.3390/agronomy11050959 ◽

2021 ◽

Vol 11 (5) ◽

pp. 959

Author(s):

Arshad Jalal ◽

Fernando Shintate Galindo ◽

Eduardo Henrique Marcandalli Boleta ◽

Carlos Eduardo da Silva Oliveira ◽

André Rodrigues dos Reis ◽

...

Keyword(s):

Common Bean ◽

Nutrient Use Efficiency ◽

Growth Yield ◽

Staple Food ◽

Human Beings ◽

Rhizobium Tropici ◽

Nutrient Use ◽

Zn Nutrition ◽

Use Efficiency ◽

Soil Zn

Enrichment of staple food with zinc (Zn) along with solubilizing bacteria is a sustainable and practical approach to overcome Zn malnutrition in human beings by improving plant nutrition, nutrient use efficiency, and productivity. Common bean (Phaseolus vulgaris L.) is one of a staple food of global population and has a prospective role in agronomic Zn biofortification. In this context, we evaluated the effect of diazotrophic bacterial co-inoculations (No inoculation, Rhizobium tropici, R. tropici + Azospirillum brasilense, R. tropici + Bacillus subtilis, R. tropici + Pseudomonas fluorescens, R. tropici + A. brasilense + B. subtilis, and R. tropici + A. brasilense + P. fluorescens) in association with soil Zn application (without and with 8 kg Zn ha−1) on Zn nutrition, growth, yield, and Zn use efficiencies in common bean in the 2019 and 2020 crop seasons. Soil Zn application in combination with R. tropici + B. subtilis improved Zn accumulation in shoot and grains with greater shoot dry matter, grain yield, and estimated Zn intake. Zinc use efficiency, recovery, and utilization were also increased with co-inoculation of R. tropici + B. subtilis, whereas agro-physiological efficiency was increased with triple co-inoculation of R. tropici + A. brasilense + P. fluorescens. Therefore, co-inoculation of R. tropici + B. subtilis in association with Zn application is recommended for biofortification and higher Zn use efficiencies in common bean in the tropical savannah of Brazil.

Download Full-text

Plant Biostimulants from Cyanobacteria: An Emerging Strategy to Improve Yields and Sustainability in Agriculture

Plants ◽

10.3390/plants10040643 ◽

2021 ◽

Vol 10 (4) ◽

pp. 643

Author(s):

Gaia Santini ◽

Natascia Biondi ◽

Liliana Rodolfi ◽

Mario R. Tredici

Keyword(s):

Nutrient Use Efficiency ◽

Biologically Active ◽

Future Research ◽

Plant Tolerance ◽

Metabolic Plasticity ◽

Nutrient Use ◽

Cyanobacterial Species ◽

Use Efficiency ◽

Promising Source ◽

Plant Treatment

Cyanobacteria can be considered a promising source for the development of new biostimulants as they are known to produce a variety of biologically active molecules that can positively affect plant growth, nutrient use efficiency, qualitative traits of the final product, and increase plant tolerance to abiotic stresses. Moreover, the cultivation of cyanobacteria in controlled and confined systems, along with their metabolic plasticity, provides the possibility to improve and standardize composition and effects on plants of derived biostimulant extracts or hydrolysates, which is one of the most critical aspects in the production of commercial biostimulants. Faced with these opportunities, research on biostimulant properties of cyanobacteria has undergone a significant growth in recent years. However, research in this field is still scarce, especially as regards the number of investigated cyanobacterial species. Future research should focus on reducing the costs of cyanobacterial biomass production and plant treatment and on identifying the molecules that mediate the biostimulant effects in order to optimize their content and stability in the final product. Furthermore, the extension of agronomic trials to a wider number of plant species, different application doses, and environmental conditions would allow the development of tailored microbial biostimulants, thus facilitating the diffusion of these products among farmers.

Download Full-text