The Effect of Nitrogen on the Growth and Sugar Content of Sugar-beet

Milford, G. F. J.; Watson, D. J.

doi:10.1093/oxfordjournals.aob.a084478

Cited by 62 publications

(34 citation statements)

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“…The decreasing root sugar content with increasing nitrogen supply agrees with Milford and Watson (1971). Several experiments have been conducted to study the effect of water stress on sugar content, but still, skepticism persists among specialists.…”

Section: White Sugar Yield Estimationsupporting

confidence: 70%

Estimation of Sugar Beet Yield and its Dry Matter Partitioning Under Different Irrigation and Nitrogen Levels

Kamali¹,

Zand‐Parsa²

2016

MAS

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In this study, a simple logistic model was developed for estimating total dry matter of sugar beet under different irrigation and nitrogen levels. The experiment was conducted using line source sprinkler irrigation in 2013 and furrow irrigation in 2014. Irrigation treatments were from 44% to 130% of full irrigation and applied nitrogen treatments ranged from 0 to 240 kg N ha -1. Results showed that the model was more accurate in predicting total dry matter at harvest date with the Normalized Root Mean Square Error (NRMSE) amounting to almost 10 percent. After total dry matter estimation, a model was needed for dry matter partitioning between different organs of sugar beet. To achieve this goal, another logistic model was developed and was compared with three revised models. Finally, white sugar content of root dry matter was estimated using a quadratic equation as a function of applied water and nitrogen. Validation results indicated that total and root dry matters, and white sugar yield were estimated fairly well. Results showed that excessive water had negative effects on total dry matter and root dry matter. Also, excessive nitrogen affected root dry matter negatively too, but even the excess had positive effects on total dry matter. In contrast to common belief, our results showed that drought stress reduced both ratios of root to leaf, and root to shoot dry matter.

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Section: White Sugar Yield Estimationsupporting

confidence: 70%

Estimation of Sugar Beet Yield and its Dry Matter Partitioning Under Different Irrigation and Nitrogen Levels

Kamali¹,

Zand‐Parsa²

2016

MAS

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“…Generally, there is an inverse relationship between sucrose concentration and beet size at a given growth stage 13. Enlarging cell volumes with decreasing sucrose concentration are a consequence of increasing nitrogen supply 14…”

Section: Introductionmentioning

confidence: 99%

Probing the Mechanical Properties of Hybrid Inorganic–Organic Frameworks: A Computational and Experimental Study

et al. 2010

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Hybrid framework materials are modular compounds consisting of metal ions and organic linkers, variation of which has given rise to a myriad of structures with technologically relevant properties. To date, extensive experimental and theoretical studies have been carried out to understand key factors that affect processes such as gas adsorption, gas separation and heterogeneous catalysis in nanoporous metal-organic frameworks (MOFs).[1] Dense hybrid frameworks are also of growing interest on account of their unique physical properties, such as multiferroics, electronic conductivity and photoluminescence, among others.[2] For all viable applications, the robustness of the materials and, in particular, a detailed understanding of their mechanical properties, are necessary for successful utilization. This field, however, remains largely unexplored. Recent experimental studies [3] have demonstrated that the elastic properties, especially the bulk modulus (B) [4] and the Young's modulus (E) [5] of nanoporous and dense hybrid frameworks, can be correlated to their density, dimensionality and their underlying chemical structures. In addition, recent computational studies have reported that the bulk moduli of a family of isoreticular metal-organic frameworks (IRMOFs) depend on the size of the aromatic organic linkers (which determines the density).[6] Herein, we employed a combination of computational and experimental approaches to probe the elastic properties of a dense and anisotropic hybrid framework material: zinc phosphate phosphonoacetate hydrate, Zn 3 -(PO 4 )(O 2 CCH 2 PO 3 )(H 2 O), 1. [7] We propose an efficient computational scheme for the approximate analysis of the Young's modulus and the Poisson's ratio (n) along the principal directions of an anisotropic crystal. Notably, this approach circumvents the intricacies involved in computing the full elastic stiffness tensor.[8] The validity of our theoretical calculations was confirmed by single-crystal nanoindentation experiments. In addition, theoretical studies were performed by subjecting the anisotropic framework to hydrostatic compression to reveal the role of the basic building blocks.Studies to date indicate that both the local density approximation (LDA) and the general gradient approximation (GGA) levels of density functional theory (DFT) have over-predicted the bulk modulus (B) of MOF materials. By way of an example, the B value of the lightweight MOF-5 (density of 0.59 g cm À3

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“…Milford (1973) (Milford and Watson 1971;Milford 1973 (Buzanov et al 1966;McFarlane et al (Butterfass 1968;Buzanov et al 1966). Tetraploids have also been reported to be lower than diploids in percent dry matter (Butterfass 1968;Buzanov et al 1966).…”

mentioning

confidence: 99%

The Relationship Between Cell Size, Yield, and Sucrose Concentration of the Sugarbeet Root

Doney¹,

Wyse²,

Theurer³

1981

Can. J. Plant Sci.

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The Effect of Nitrogen on the Growth and Sugar Content of Sugar-beet

Cited by 62 publications

References 1 publication

Estimation of Sugar Beet Yield and its Dry Matter Partitioning Under Different Irrigation and Nitrogen Levels

Estimation of Sugar Beet Yield and its Dry Matter Partitioning Under Different Irrigation and Nitrogen Levels

Probing the Mechanical Properties of Hybrid Inorganic–Organic Frameworks: A Computational and Experimental Study

The Relationship Between Cell Size, Yield, and Sucrose Concentration of the Sugarbeet Root

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