Endophytes in Mineral Nutrient Management: Introduction

2021 ◽  
pp. 3-9
Author(s):  
Dinesh Kumar Maheshwari ◽  
Shrivardhan Dheeman
Keyword(s):  
Nutrient Management ◽  
Mineral Nutrient

Differentiated mineral nutrient management in two bamboo species under elevated CO2 environment

2021 ◽  
Vol 279 ◽  
pp. 111600
Author(s):  
Ziwu Guo ◽  
Minghao Zhuang ◽  
Liting Yang ◽  
Yingchun Li ◽  
Shuo Wu ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Nutrient Management ◽  
Mineral Nutrient ◽  
Bamboo Species ◽  
Co2 Environment

scholarly journals Nitrogen use efficiency in crops with new and available technologies

2021 ◽  
Vol 23 (3) ◽  
pp. 256-266
Author(s):  
D BLAISE ◽  
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Nutrient Management ◽  
N Fertilization ◽  
Production Costs ◽  
Mineral Nutrient ◽  
Fertilizer N ◽  
Physiological Processes ◽  
Use Efficiency ◽  
The One

Among fertilizers, nitrogen (N) is the one that is used in the largest amounts mainly due to immediate response to the fertilizer-N application. However, the N use efficiency (NUE) is very low leading to high production costs and also a threat to the environment. Therefore, improving NUE is imperative. The 4 R’s (right quantity, right time, right method and right source) should be considered as the first step for enhancing NUE. Best management practices (BMP’s) of production and protection need to be adopted in order to achieve high NUE. Integration of novel N sources and nanofertilizers and better N fertilization products would lead to high NUE. Furthermore, novel techniques such as Precision Nutrient Management and Variable Rate Application to time nutrient application with crop need, and remote sensing are upcoming technologies that will bring about considerable savings in fertilizer-N. Further we should also account for plant physiological processes, including the diversity of mineral nutrient uptake mechanisms, their translocation and metabolism in order to breed and develop crop cultivars that are efficient N users.

scholarly journals Calcium-activated Root Growth and Mineral Nutrient Accumulation of Lupinus havardii: Ecophysiological and Horticultural Significance

2001 ◽  
Vol 126 (5) ◽  
pp. 631-637 ◽  
Author(s):  
G.A. Picchioni ◽  
M. Valenzuela-Vazquez ◽  
S. Armenta-Sanchez
Keyword(s):  
Root Growth ◽  
Dry Matter ◽  
Nutrient Management ◽  
Calcareous Soils ◽  
Mineral Nutrients ◽  
Mineral Nutrient ◽  
Sink Strength ◽  
Dry Matter Accumulation ◽  
Nutrient Accumulation ◽  
Greenhouse Production

Lupinus havardii Wats. (Big Bend bluebonnet) has received considerable attention as a new specialty cut flower crop. We studied the consequences of Ca fertigation on growth, water use, and mineral nutrient uptake of L. havardii (`Texas Sapphire') for 88 days in a greenhouse. Four Ca concentrations were included (as CaCl2) in the fertigation solution at concentrations of 0, 2.5, 5.0, or 10.0 mm. Calcium supply did not affect the number of racemes produced per plant or total dry matter accumulation per plant. However, root dry matter accumulation, root: shoot ratio, net root mineral nutrient accumulation (milligrams P, K, Ca, Mg, and Fe per plant; micrograms Mn, B, and Cu per plant), and the preferential allocation of mineral nutrients to roots were influenced quadratically by CaCl2 supply, increasing up to 5.0 mm CaCl2 and then decreasing at 10.0 mm CaCl2. Lack of root sink response by plants exposed to 10.0 mm CaCl2 was associated with lowest daily rate of pot evapotranspiration, probably resulting from osmotic or Cl toxicity stress. Increased root sink strength for dry matter and mineral nutrients in response to CaCl2 supply up to 5.0 mm Ca is consistent with calcicole-like behavior and the native distribution of L. havardii on xeric, calcareous soils, where root growth and expansion favoring water and mineral nutrient acquisition may be of significant adaptive value for survival. The Carelated increase in root growth was reflected in up to a 5% to 20% increase in fertilizer P and K recovery per plant. Results indicate that Ca fertilization may be an effective horticultural strategy in greenhouse production of L. havardii, particularly for matching the natural edaphic habitat of the species and thus increasing efficiency of water and mineral nutrient management.

scholarly journals Physiology of Nitrogen and Calcium Nutrition in Blueberry (Vaccinium sp.)

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 765
Author(s):  
John W. Doyle ◽  
Savithri U. Nambeesan ◽  
Anish Malladi
Keyword(s):  
Fruit Quality ◽  
Nutrient Management ◽  
Nitrogen Concentration ◽  
Membrane Integrity ◽  
Mineral Nutrient ◽  
Fourfold Increase ◽  
Nutrient Physiology ◽  
N Source ◽  
Sustainable Nutrient Management ◽  
N Acquisition

Sustaining the fourfold increase in blueberry (Vaccinium sp.) production witnessed during the previous two decades requires better understanding of its mineral nutrient physiology. The primary goals of this review are to evaluate our current understanding of the physiology of nitrogen (N) and calcium (Ca) nutrition in blueberry. Nitrogen concentration in blueberry ranges from 0.4% to >2% across organs. Blueberry uses N in various forms (organic and inorganic), but it appears to display preference for ammonium (NH4+) over nitrate (NO3−). The roles of N acquisition, translocation and assimilation in determining N-source preference in blueberry are evaluated. Calcium plays important roles in determining fruit quality owing to its function in maintaining cell wall and membrane integrity. It is unique in its translocation characteristics being transported primarily via the xylem. Fruit [Ca2+] typically declines from around 0.2% during early development to <0.05% at ripening. Modes of Ca acquisition and transport to the fruit, and various approaches to improve fruit [Ca2+] are discussed. Areas where further research is warranted to improve our understanding of N and Ca physiology in blueberry are identified. Such knowledge is essential for sustainable nutrient management, improving productivity, and enhancing fruit quality in blueberry.

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

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.

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