Foliar Application with Iron Oxide Nanomaterials Stimulate Nitrogen Fixation, Yield, and Nutritional Quality of Soybean

Plant biostimulants (PBs) such as protein hydrolysates and seaweed extracts are attracting the increasing interest of scientists and vegetable growers for their potential toenhance yield and nutritional quality. The current study assessed crop productivity, leaf colorimetry, mineral profile and bioactive compounds of greenhouse spinach in response to the foliar application of three PBs: legume-derived protein hydrolysate [PH], extract of seaweed Ecklonia maxima or mixture of vegetal oils, herbal and seaweed Ascophyllum nodosum extracts. Plants were PB-treated at a rate of 3 mL L−1 four times during their growth cycle at weekly intervals. Foliar PB applications enhanced fresh yield, dry biomass and leaf area of spinach in comparison with untreated plants. Improved yield performance with PB applications was associated with improved chlorophyll biosynthesis (higher SPAD index). The three PB treatments elicited an increase in bioactive compounds (total phenols and ascorbic acid), thus raised the functional quality of spinach. The application of PH enhanced K and Mg concentrations and did not result in increased nitrate accumulation as observed with the other two PB treatments. Our findings can assist vegetable farmers and the agro-food industry in adopting innovative and sustainable tools such as PB for complementing a high yield with premium quality.

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The Effect of Cultivar and Biostimulant Treatment on the Carrot Yield and its Quality

Vegetable Crops Research Bulletin ◽

10.2478/v10032-012-0014-1 ◽

2012 ◽

Vol 77 (1) ◽

pp. 37-48 ◽

Cited By ~ 15

Author(s):

Aneta Grabowska ◽

Edward Kunicki ◽

Agnieszka Sękara ◽

Andrzej Kalisz ◽

Renata Wojciechowska

Keyword(s):

Chemical Composition ◽

Nutritional Quality ◽

Dry Matter ◽

Foliar Application ◽

Soluble Sugar ◽

Soluble Sugars ◽

Matter Content ◽

Cultivated Plants ◽

Dry Matter Content

Summary Modifications in growing techniques can affect the yield and nutritional quality of various cultivated plants. Among them, the use of biostimulants is environmental friendly method of stimulating crop productivity, stress resistance, and affecting yield or chemical composition of the plants. The aim of the investigation was determining of the effect of biostimulant treatment on yield and its quality of carrot grown for summer harvest. The experiment was carried out in 2009-2011 in the experimental station of the University of Agriculture in Krakow, south Poland. Two experimental factors were taken into consideration: (1) cultivar: Nandrin F1 and Napoli F1 (2) dose of Aminoplant (foliar application): 1.5 and 3.0 dm3∙ha-1 and control (without Aminoplant). Total and marketable yield, root length, its diameter, leaf mass and leaf : root mass ratio were assessed. The dry matter, soluble sugar, carotenoids and nitrate ions contents were analyzed as main determinants of carrot nutritional quality. Aminoplant influenced not only carrot productivity, but mainly chemical composition of the roots. The present results also suggest that carrot reaction to biostimulant treatment was depended on a cultivar more than on environmental conditions in particular growing seasons. The significant effect of Aminoplant in a dose of 1.5 dm3∙ha-1 on the yield of roots and leaf rosette mass of ‘Nandrin F1’ appeared only in the first year of the experiment. Spraying with Aminoplant in a dose of 3.0 dm3∙ha-1 significantly increased the soluble sugars content in carrot roots of both cultivars but only in 2011. Dry matter content was also affected by biostimulant treatment mainly for ‘Napoli F1’, which showed the lowest dry matter content when sprayed with Aminoplant in a dose of 1.5 dm3∙ha-1. In 2010 control plants contained the greater amount of carotenoids, while in next year roots of plants treated with Aminoplant in a dose of 3.0 dm3∙ha-1 had more these compounds. The significant effect of Aminoplant on nitrates content in carrot roots was observed but were not repeatable in the experimental years, so different climatic conditions modified carrot reaction on biostimulant spraying.

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Impact of foliar application of seaweed saps on yield, nodulation and nutritional quality in green gram (Vigna radiata L)

Legume Research - An International Journal ◽

10.18805/lr.v39i2.9535 ◽

2016 ◽

Vol 39 (2) ◽

Cited By ~ 2

Author(s):

K. P. Raverkar ◽

Navneet Pareek ◽

Ramesh Chandra ◽

Swati Chauhan ◽

S. T. Zodape ◽

...

Keyword(s):

Vigna Radiata ◽

Nutritional Quality ◽

Foliar Application ◽

Root Nodules ◽

Growth Yield ◽

Dry Weight ◽

The World ◽

And Control ◽

Macro Algae

Seaweeds are marine macro algae, which form an important component of the marine living resources of the world. To evaluate the efficiency of seaweed (<italic>Kappaphycus</italic> and <italic>Gracilaria</italic>) saps on growth, yield and nutrition of <italic>Vigna radiata</italic>, an experiment was conducted during <italic>spring</italic> 2012 under field conditions. The ten treatments comprised two seaweed saps (K-sap & G-sap), four concentrations of each sap (2.5, 5, 10 and 15%), 7.5% of K-sap + 50% RDF (recommended dose of fertilizers) and control. The highest grain yield of 557 kg ha<sup>−1</sup> was harnessed due to two foliar applications of 10% K-sap + RDF. Increase in yield due to K-sap ranged between 29.32 to 33.81% while due to G-sap it was 25.74 to 26.15%. Foliar application of K-sap influenced the number and dry weight of root nodules at flowering. Application of seaweed saps also enhanced quality of grains in terms of protein, P and K content.

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Interactive Effects of Foliar Application of Zinc, Iron and Nitrogen on Productivity and Nutritional Quality of Indian Mustard (Brassica juncea L.)

Agronomy ◽

10.3390/agronomy11112333 ◽

2021 ◽

Vol 11 (11) ◽

pp. 2333

Author(s):

Salwinder Singh Dhaliwal ◽

Vivek Sharma ◽

Arvind Kumar Shukla ◽

Vibha Verma ◽

Prabhjodh Singh Sandhu ◽

...

Keyword(s):

Brassica Juncea ◽

Nutritional Quality ◽

Foliar Application ◽

Indian Mustard ◽

Interactive Effects ◽

Oilseed Crop ◽

Maximum Increase ◽

Zn Concentration ◽

The Impact

Indian mustard (Brassica juncea L.) is an important winter oilseed crop in India. It acts as a promising species for the extraction of Zn and Fe under nutrient-deficit conditions. Therefore, this study planned to determine the impact of nutritional supplementation (Zn, Fe and urea) on the productivity and nutritional quality of Indian mustard. In the experiment, different combinations of recommended dose of fertilizer (RDF) with 0.5% FeSO4·7H2O, 0.5% ZnSO4·7H2O and 1% urea at 45 and 60 days after sowing (DAS) were applied to Indian mustard. Foliar application of micronutrients along with urea enhanced the productivity and quality of the crop. Among different treatments, the foliar application of 0.5% FeSO4·7H2O + 0.5% ZnSO4·7H2O + 1% urea (FZU) at 45 and 60 DAS resulted in the maximum increase in grain (27.8%) and stover (34.47%) yield, which was statistically at par with the treatment 0.5% FeSO4·7H2O + 0.5% ZnSO4·7H2O at 45 and 60 DAS (FZ). A similar trend was observed for Zn concentration in grain and stover, as well as Fe concentration in stover. However, the Fe concentration in grain was at maximum with treatment FZU, and the results were significantly higher compared with the treatment FZ. Treatment FZU also resulted in a maximum increase in Zn and Fe uptake in grain (54.7% and 34.3%, respectively) and stover (110.5% and 46.1%, respectively), which was statistically at par with treatment FZ. Physiological efficiencies of Zn (11,838.33) and Fe (3575.887) were highest when only urea was applied along with RDF, whereas the apparent recovery efficiency of Zn and Fe was highest in treatment FZU. Overall, it is concluded that combined foliar application of, 0.5% FeSO4·7H2O + 0.5% ZnSO4·7H2O + 1% urea at 45 and 60 DAS along with RDF was found to be most effective to enhance yield, concentration and uptake of Zn and Fe in Indian mustard.

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NUTRITIONAL QUALITY OF FRESHWATER FISHES AND ITS IMPORTANCE ON REGULATION OF NUTRITIONAL STATUS OF LOCAL FISHERMEN COMMUNITY OF MURSHIDABAD DISTRICT, WEST BENGAL, INDIA: A FIELD STUDY

JOURNAL OF AQUACULTURE IN THE TROPICS ◽

10.32381/jat.2018.33.1-2.1 ◽

2018 ◽

Vol 33 (1-2) ◽

pp. 1-10

Author(s):

SOUMIMA CHATTORAJ ◽

◽

KAUSIK MONDAL ◽

Keyword(s):

Nutritional Status ◽

Field Study ◽

Nutritional Quality ◽

West Bengal ◽

Freshwater Fishes

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Food procurement in English-language Canadian public schools: Opportunities and challenges

Canadian Food Studies / La Revue canadienne des études sur l alimentation ◽

10.15353/cfs-rcea.v6i1.265 ◽

2019 ◽

Vol 6 (1) ◽

pp. 75-99

Author(s):

Shawna Holmes

Keyword(s):

Public Schools ◽

Food Environment ◽

Nutritional Quality ◽

English Language ◽

Nutrient Content ◽

Food Environments ◽

School Food ◽

Provincial Level ◽

School Food Environment

This paper examines the changes to procurement for school food environments in Canada as a response to changes to nutrition regulations at the provincial level. Interviews with those working in school food environments across Canada revealed how changes to the nutrition requirements of foods and beverages sold in schools presented opportunities to not only improve the nutrient content of the items made available in school food environments, but also to include local producers and/or school gardens in procuring for the school food environment. At the same time, some schools struggle to procure nutritionally compliant foods due to increased costs associated with transporting produce to rural, remote, or northern communities as well as logistic difficulties like spoilage. Although the nutrition regulations have facilitated improvements to food environments in some schools, others require more support to improve the overall nutritional quality of the foods and beverages available to students at school.

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