A Simple Model for Nitrogen-limited Plant Growth and Nitrogen Allocation

Verkroost, A.W.M.; Wassen, Martin J.

doi:10.1093/aob/mci239

Cited by 22 publications

(10 citation statements)

References 27 publications

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“…Leaf areas resulting from N concentrations of 8 and 20 mmol L −1 in the nutrients solution were of 7,063 and 9,353 cm 2 per plant, respectively. The expressive effect of N on melon plant growth has been intensively reported in the literature [13, 28, 29]. The highest melon plants AF were verified when the highest N and N-NO 3 − leaf levels were found in the substratum solution extract (Figure 2(a)).…”

Section: Resultsmentioning

confidence: 74%

Nitrogen and Potassium Concentrations in the Nutrients Solution for Melon Plants Growing in Coconut Fiber without Drainage

Gratieri

Filho

Barbosa

et al. 2013

The Scientific World Journal

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With the objective of evaluating the effects of N and K concentrations for melon plants, an experiment was carried out from July 1, 2011 to January 3, 2012 in Muzambinho city, Minas Gerais State, Brazil. The “Bonus no. 2” was cultivated at the spacing of 1.1 × 0.4. The experimental design was a randomized complete block with three replications in a 4 × 4 factorial scheme with four N concentrations (8, 12, 16, and 20 mmol L−1) and four K concentrations (4, 6, 8, and 10 mmol L−1). The experimental plot constituted of eight plants. It was observed that the leaf levels of N and K, of N-NO3 and of K, and the electrical conductivity (CE) of the substrate increased with the increment of N and K in the nutrients' solution. Substratum pH, in general, was reduced with increments in N concentration and increased with increasing K concentrations in the nutrients' solution. Leaf area increased with increments in N concentration in the nutrients solution. Fertigation with solutions stronger in N (20 mmol L−1) and K (10 mmol L−1) resulted in higher masses for the first (968 g) and the second (951 g) fruits and crop yield (4,425 gm−2).

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Section: Resultsmentioning

confidence: 74%

Nitrogen and Potassium Concentrations in the Nutrients Solution for Melon Plants Growing in Coconut Fiber without Drainage

Gratieri

Filho

Barbosa

et al. 2013

The Scientific World Journal

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“…The degradation rate D X is governed by first-order kinetics (Verkroost and Wassen, 2005; Li et al , 2017) with a degradation constant D r, X (°Cd −1 ):…”

Section: Methodsmentioning

confidence: 99%

Environmental triggers for photosynthetic protein turnover determine the optimal nitrogen distribution and partitioning in the canopy

Pao

Chen

Moualeu-Ngangue

et al. 2018

Journal of Experimental Botany

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Plants acclimatize their photosynthetic functions in leaves constantly to the fluctuating light, thereby optimizing the use of photosynthetic nitrogen (Nph) at the canopy level. To investigate the complex interplay between external signals during the acclimation processes, a mechanistic model based on the concept of protein turnover (synthesis and degradation) was proposed and parameterized using cucumber grown under nine combinations of nitrogen and light in growth chambers. Integrating this dynamic model into a multi-layer canopy model provided accurate predictions of photosynthetic acclimation of greenhouse cucumber canopies grown under high (HN) and low (LN) nitrogen supply in combination with day-to-day fluctuations in light at two different levels. This allowed us to quantify the degree of optimality in canopy nitrogen use for maximizing canopy carbon assimilation, which was influenced by Nph distribution along canopy depth or Nph partitioning between functional pools. Our analyses suggest that Nph distribution is close to optimum and Nph reallocation is more important under LN. Nph partitioning is only optimal under the light level similar to the average light intensity during acclimation, meaning that day-to-day light fluctuations inevitably result in sub-optimal Nph partitioning. Our study provides insights into photoacclimation and can be applied for crop model improvement.

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“…However, nitrogen is a limiting factor for plant growth (Aber et al, 1997;Shaver et al, 2001;LeBauer and Treseder, 2008). Therefore, denitrification may decrease soil nitrogen levels available for plants, thus affecting the growth and survival under specific environmental conditions (Friend, 1991;Verkroost and Wassen, 2005).…”

Section: Nitrogen As a Limiting Nutrient In The Tallgrass Prairiementioning

confidence: 99%

Nitrate Reducing and Denitrifying Bacteria in Oil / Brine Contaminated Soils

AbuBakr

2020

AJB

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Soil microorganisms are a fundamental part of biogeochemical cycling of nitrogen. Nitrate reducing bacteria and denitrifying bacteria are diverse groups of bacteria involved in nitrogen transformations in soils. Current research has shown that soil denitrification releases nitrogen from the soil ecosystem to the atmosphere. As a result, the balance between denitrification and N-fixation can determine the biologically available nitrogen for soils. In fact, nitrogen deficiency in soil is a common limiting factor for plant growth and productivity. Nitrate reduction and denitrification could be affected by some environmental factors (e.g. oxygen levels) and could also be affected by various contaminants such as crude oil and brine as they may alter the abundance and species composition of nitrate reducing and denitrifying bacteria. On the other hand, different environmental factors (e.g., oxygen and humic substances) affect the degradation of petroleum hydrocarbons in soil by soil microorganisms.

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A Simple Model for Nitrogen-limited Plant Growth and Nitrogen Allocation

Cited by 22 publications

References 27 publications

Nitrogen and Potassium Concentrations in the Nutrients Solution for Melon Plants Growing in Coconut Fiber without Drainage

Nitrogen and Potassium Concentrations in the Nutrients Solution for Melon Plants Growing in Coconut Fiber without Drainage

Environmental triggers for photosynthetic protein turnover determine the optimal nitrogen distribution and partitioning in the canopy

Nitrate Reducing and Denitrifying Bacteria in Oil / Brine Contaminated Soils

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