Effects of Nitrogen Fertilization on the Leaf Chemical Composition of Two Potato Cultivars under Controlled Conditions

2020 ◽  
Vol 97 (2) ◽  
pp. 175-184
Author(s):  
Guoqi Wen ◽  
Athyna N. Cambouris ◽  
Noura Ziadi ◽  
Annick Bertrand ◽  
Mohamed Khelifi
Keyword(s):  
Chemical Composition ◽  
Nitrogen Fertilization ◽  
Potato Cultivars ◽  
Controlled Conditions

Effect of nitrogen fertilization on yield, storage losses and chemical composition of winter cabbage

1991 ◽  
Vol 71 (3) ◽  
pp. 943-946 ◽  
Author(s):  
S. Freyman ◽  
P. M. Toivonen ◽  
W. C. Lin ◽  
P. W. Perrin ◽  
J. W. Hall
Keyword(s):  
Ascorbic Acid ◽  
Chemical Composition ◽  
Key Words ◽  
Nitrogen Fertilization ◽  
N Fertilization ◽  
Nitrogen Rate ◽  
N Application ◽  
Storage Losses ◽  
White Cabbage ◽  
Brassica Oleracea L

Increasing rates of field nitrogen (N) application (0, 100, 200, 300, 400 and 500 kg N ha−1) resulted in markedly higher yields of winter white cabbage (Brassica oleracea L. var. capitata 'Bartolo') due to larger head size. Glucose and fructose contents increased with increased nitrogen. In contrast, ascorbic acid and sucrose contents declined slightly with increased nitrogen. Nitrogen rate had little effect on storage losses. The results indicated that increased N fertilization provided overall benefit to cabbage production. Key words: Cabbage, nitrogen fertilization, storage losses, yield

Differentiation of potato cultivars experimentally cultivated based on their chemical composition and by applying linear discriminant analysis

2012 ◽  
Vol 133 (4) ◽  
pp. 1241-1248 ◽  
Author(s):  
Beatriz Rodríguez Galdón ◽  
Lía Hernández Rodríguez ◽  
Domingo Ríos Mesa ◽  
Hernán Lorenzo León ◽  
Nadia Luna Pérez ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Discriminant Analysis ◽  
Linear Discriminant Analysis ◽  
Potato Cultivars ◽  
Linear Discriminant

scholarly journals Silages of pearl millet submitted to nitrogen fertilization

2014 ◽  
Vol 44 (5) ◽  
pp. 918-924 ◽  
Author(s):  
Ricardo Martins Araujo Pinho ◽  
Edson Mauro Santos ◽  
Fleming Sena Campos ◽  
João Paulo de Farias Ramos ◽  
Carlos Henrique Oliveira Macedo ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Chemical Composition ◽  
Experimental Design ◽  
Pearl Millet ◽  
Nitrogen Fertilization ◽  
Acid Content ◽  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Lactic Acid Content ◽  
Split Plot

This study aimed to evaluate the fermentation characteristics, losses and the chemical composition of two pearl millet genotypes silages submitted to nitrogen fertilization. The experimental design was a completely randomized blocks in a split plot scheme 2x5 (two nitrogen genotypes doses x five doses of nitrogen), with four replicates. Nitrogen doses were 0, 20, 40, 60, 80kg ha-1 and the pearl millet genotypes were the variety ADR300 and the hybrid ADR7010. The hybrid ADR 7010 showed average lactic acid content higher than the variety ADR 300, at all doses of N, recording values ranging from 4.09 to 10.46dag kg-1. There was an interaction between nitrogren doses and genotypes for the neutral detergent fiber, which ranged from 51.81 to 63.63dag kg-1 of dry matter. Dry matter recovery decreased linearly with increasing nitrogen doses only for hybrid ADR7010, the same did not happen for the ADR300. The nitrogen fertilization does not favor the fermentation characteristics and increases DM losses of the hybrid ADR7010.

scholarly journals The use of metallurgical slag as a by-product of the steel industry in chemical melioration of acid soils

2014 ◽  
Vol 20 (3) ◽  
pp. 191-198 ◽  
Author(s):  
Aleksandra Stanojković-Sebić ◽  
Srboljub Maksimović ◽  
Dragana Jošić ◽  
Radmila Pivić
Keyword(s):  
Chemical Composition ◽  
Adverse Effects ◽  
Steel Industry ◽  
Chemical Properties ◽  
Acid Soils ◽  
Metallurgical Slag ◽  
Raw Material ◽  
Agricultural Practice ◽  
Controlled Conditions ◽  
Secondary Raw Material

The effect of metallurgical slag application on chemical properties of the soils with limited productive ability (Stagnosol), as well as on chemical composition of cultivated vegetables (spinach and cabbage) as experimental crops, through the vegetative experiments performed in semi-controlled conditions, was studied. The longterm investigations were aimed to define the main parameters for possible wider usage of this secondary raw material (by-product of the steel industry, respectively) for chemical melioration and fertilization of acid soils in Serbia, as well as to indicate the justification of its application in agricultural practice. Generally, it was concluded that the studied metallurgical slag of the standardized chemical composition can be added to the acid soils toward amelioration the fertility without adverse effects. 

scholarly journals Yield and Chemical Composition of Raw Material from Meadow Arnica (Arnica chamissonis Less.) Depending on Soil Conditions and Nitrogen Fertilization

Agriculture ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 810
Author(s):  
Katarzyna Olesińska ◽  
Danuta Sugier ◽  
Zdzisław Kaczmarski
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Nitrogen Fertilization ◽  
Sesquiterpene Lactones ◽  
Flower Head ◽  
Raw Material ◽  
Loamy Soil ◽  
Pharmacologically Active ◽  
Active Substances

Considering the global tendency towards using valuable secondary metabolites of plant origin, there is a need to optimize the cultivation of herbal plants, e.g., the meadow arnica (A. chamissonis Less.). The inflorescences of this species (Arnicae anthodium) have a similar chemical composition and pharmacological activity to that in the mountain arnica (Arnica montana L.), and can be cultivated more easily than the mountain arnica. Therefore this study assesses soil and fertilization effects on the flower head yield and concentrations of active substances (sesquiterpene lactones, flavonoids, and essential oil) with great importance for application in the pharmaceutical and cosmetic industries. A field experiment was carried out during 2017–2019 on two types of soil (sandy and loamy soils) differing in the pH values, organic matter content, and the P, K, and Mg levels. Five levels of nitrogen fertilization were applied in both soil variants: 0, 30, 60, 90, and 120 kg N∙ha−1. The study showed that both the soil type and the nitrogen fertilization had a positive impact on the raw material yield and the content and yield of the main active substances. The cultivation of arnica in the loamy soil was more favorable—it provided a higher flower head yield, higher levels of sesquiterpene lactones, flavonoids, and essential oils, and consequently, a higher yield of these metabolites. High flower head yields were achieved at doses of 60 and 90 kg N∙ha−1. The content of sesquiterpene lactones and essential oils increased in the consecutive study years along with the increase in nitrogen doses. The highest content of flavonoids was detected in flower heads obtained from three-year-old plants fertilized with 60 kg N∙ha−1. High yields of sesquiterpene lactones and essential oils were obtained at doses of 90–120 kg N∙ha−1, whereas the fertilization with 60–90 N∙ha−1 ensured a high yield of flavonoids. The yields of sesquiterpene lactones and essential oil did not depend on their concentration but correlated with the increase in the yield of flower heads of plants cultivated in both sandy and loamy soil variants. In turn, the yield of flavonoids was influenced by both their concentration and the flower head yield. The flower head yield, the content of sesquiterpene lactones, flavonoids, and essential oils, and the yields of metabolites presented in this study indicate favorable climatic conditions for the cultivation of A. chamissonis in Central and Eastern Poland. This proves that a wide range of pharmacologically active substances can be produced in this region of Europe.

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