scholarly journals Nitrogen in Flowers

2021 ◽  
Author(s):  
Soraya Ruamrungsri ◽  
Kanokwan Panjama ◽  
Takuji Ohyama ◽  
Chaiartid Inkham
Keyword(s):  
Life Cycle ◽  
Nitrogen Uptake ◽  
Crop Production ◽  
Growth Stage ◽  
Nitrogen Deficiency ◽  
Nitrogen Supply ◽  
Stem Length ◽  
Tagetes Erecta ◽  
Optimum Level ◽  
Reproductive Phases

This chapter explores the literature and research on nitrogen in flowers. An overview of nitrogen deficiency symptoms in some flowers, i.e., Curcuma alismatifolia (ornamental curcuma), Tagetes erecta (marigold), Zinnia violacea (zinnia), and Gomphrena globose (gomphrena) were presented. Additionally, nitrogen uptake, translocation, and application in some flowers, i.e., ornamental curcuma, narcissus, orchids, and rose, were discussed in this chapter. Nitrogen affects the life cycle of flower, including vegetative and reproductive phases. Flower size, stem length, number of flowers per plant, and color were reduced by nitrogen deficiency. Therefore, the optimum level of nitrogen supply in each growth stage is important for flower crop production.

scholarly journals The effect of Achene heteromorphism on progeny traits in the shaggy soldier [Galinsoga ciliata (Rafin) S. F. Blake]

2012 ◽  
Vol 63 (2) ◽  
pp. 51-56 ◽  
Author(s):  
Magdalena Kucewicz ◽  
Ewa Gojło ◽  
Anna Kowalska
Keyword(s):  
Invasive Species ◽  
Life Cycle ◽  
Growth Rates ◽  
Crop Production ◽  
Growth Stage ◽  
Initial Growth ◽  
Annual Plant ◽  
Flowering Stage ◽  
The Individual ◽  
Galinsoga Ciliata

The shaggy soldier [<i>Galinsoga ciliata</i> (Rafin) S. F. Blake], family Asteraceae] is an invasive species that poses a growing threat to crop production. This annual plant produces heteromorphic achenes in a capitulum type inflorescence. The objective of this study was to compare selected morphological and phenological parameters and the success of generative reproduction in plants developed from peripheral and central achenes of the capitulum. The somatic variability of <i>G. ciliata</i> diaspores contributed to differences in the growth rates, development and fertility of the resulting populations. The progeny of central diaspores developed at a slower rate than the individuals derived from peripheral achenes, but at the end of their life cycle, the offspring of dimorphic achenes formed homogenous groups as regards height values. On average, the initial phenophases of <i>G. ciliata</i> plants derived from central achenes began one day later, and they entered the flowering stage eight days later than the individuals developed from peripheral seeds. At the initial growth stage (experimental day 65 to 83), the progeny of central achenes produced fewer capitula. On day 133, the individual fertility of the plants derived from central diaspores was 10% higher on average in comparison with the offspring of peripheral achenes.

scholarly journals Life Cycle Energy Consumption and Carbon Dioxide Emissions of Agricultural Residue Feedstock for Bioenergy

2021 ◽  
Vol 11 (5) ◽  
pp. 2009
Author(s):  
Valerii Havrysh ◽  
Antonina Kalinichenko ◽  
Anna Brzozowska ◽  
Jan Stebila
Keyword(s):  
Carbon Dioxide ◽  
Power Generation ◽  
Life Cycle ◽  
Carbon Dioxide Emissions ◽  
Crop Production ◽  
Agricultural Residues ◽  
Environmental Indicators ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Energy Inputs

The depletion of fossil fuels and climate change concerns are drivers for the development and expansion of bioenergy. Promoting biomass is vital to move civilization toward a low-carbon economy. To meet European Union targets, it is required to increase the use of agricultural residues (including straw) for power generation. Using agricultural residues without accounting for their energy consumed and carbon dioxide emissions distorts the energy and environmental balance, and their analysis is the purpose of this study. In this paper, a life cycle analysis method is applied. The allocation of carbon dioxide emissions and energy inputs in the crop production by allocating between a product (grain) and a byproduct (straw) is modeled. Selected crop yield and the residue-to-crop ratio impact on the above indicators are investigated. We reveal that straw formation can consume between 30% and 70% of the total energy inputs and, therefore, emits relative carbon dioxide emissions. For cereal crops, this energy can be up to 40% of the lower heating value of straw. Energy and environmental indicators of a straw return-to-field technology and straw power generation systems are examined.

scholarly journals Environmental Life-Cycle Assessment of Arable Crop Production Technologies Compared to Different Harvesting Work Systems in Short Rotation Energy Plantations

2019 ◽  
Vol 15 (2) ◽  
pp. 55-68
Author(s):  
András Polgár ◽  
Zoltán Kovács ◽  
Veronika Elekné Fodor ◽  
András Bidló
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Crop Production ◽  
Short Rotation ◽  
Environmental Life Cycle Assessment ◽  
Arable Crop ◽  
Production Technologies ◽  
Energy Plantations ◽  
The Impact ◽  
Rotation Energy

Abstract Environmental life cycle assessment (LCA) was developed as a tool for sustainable, decision-supporting environmental management. Applying agricultural sector-LCA in order to achieve both internal (comparative) and external (efficiency enhancing) benefits is a priority. Since the life-cycle assessment of products and processes attracts great interest, applying the method in agriculture is relevant. Our study undertakes a comparative environmental life-cycle assessment (LCA) of local arable crop production technologies used for the main cultivated plants: maize, sunflower, lucerne, cereals, and canola (environmental data in the territorial approach calculated on a 1 ha unit and in the quantitative approach calculated on 1 t of produce). We prepared an environmental inventory of the arable crop production technologies, constructed the life-cycle models, and executed the impact assessment. We also compiled an environmental ranking of technologies. In the impact interpretation, we compared the results with the values of short rotation energy plantations in each impact category. We analysed carbon footprints closely. The obtained results help better assess environmental impacts, climate risks, and climate change as they pertain to arable crop production technologies, which advances the selection of appropriate technologies adjusted to environmental sensitivities.

Tightening the Life-Cycle Construct: A Taxonomic Study of Growth Stage Configurations in High-Technology Organizations

1994 ◽  
Vol 18 (2) ◽  
pp. 5-29 ◽  
Author(s):  
Steven H. Hanks ◽  
Collin J. Watson ◽  
Erik Jansen ◽  
Gaylen N. Chandler
Keyword(s):  
Cluster Analysis ◽  
Life Cycle ◽  
Growth Stage ◽  
High Technology ◽  
Life Cycle Stage ◽  
Growth Stages ◽  
Taxonomic Study ◽  
Organization Context ◽  
Organization Life Cycle

Over the years much has been written about the organization life cycle, yet there has been remarkably little attention given to the underlying construct of a life-cycle stage. It is proposed in this study that each life-cycle stage consists of a unique configuration of variables related to organization context and structure. Cluster analysis is used to derive a taxonomy of growth stage configurations in a sample of 126 high-technology organizations. The derived configurations suggest a sequence of four growth stages.

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