scholarly journals Continuous Lighting and High Daily Light Integral Enhance Yield and Quality of Mass-Produced Nasturtium (Tropaeolum majus L.) in Plant Factories

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1203
Author(s):  
Wenshuo Xu ◽  
Na Lu ◽  
Masao Kikuchi ◽  
Michiko Takagaki
Keyword(s):  
Secondary Metabolites ◽  
Mass Production ◽  
Physiological Stress ◽  
Growth Parameters ◽  
Leaf Production ◽  
High Productivity ◽  
Artificial Lighting ◽  
Yield And Quality ◽  
Use Efficiency ◽  
Tropaeolum Majus

Nasturtium (Tropaeolum majus L.), as a medicinal plant, has a high phenolic content in its leaves and flowers. It is often used in salads as a dietary vegetable. Attracting strong demand, it could be a good candidate crop for a plant factory with artificial lighting (PFAL) that can achieve the mass production of high-quality crops with high productivity by regulating environmental conditions such as light. In this study, two experiments were conducted to investigate the effects of continuous lighting (CL) and different daily light integrals (DLIs) under CL on the growth, secondary metabolites, and light use efficiency (LUE) of nasturtium, all of which are essential in the successful cultivation in PFALs. In Experiment 1, two lighting models, the same DLI of 17.3 mol m-2 d-1 but different light periods (24 and 16 h) with different light intensities (200 and 300 µmol m−2 s−1, respectively), were applied to nasturtium. The results showed that leaf production, secondary metabolites, and LUE were higher under the 24-h CL treatment than under the 16-h non-CL treatment. In Experiment 2, three DLI levels (17.3, 25.9, and 34.6 mol m-2 d-1) under the CL condition were applied. The results showed that the growth parameters were positively correlated with the DLI levels under CL. The lowest DLI had the highest LUE. We conclude that the mass production of nasturtium under CL in PFALs is feasible, and the yield increases as DLI increases from 17.3 to 34.6 mol m-2 d-1 under CL without causing physiological stress on plants.

scholarly journals Can Seaweed Extract Improve Yield and Quality of Brewing Barley Subjected to Different Levels of Nitrogen Fertilization?

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2481
Author(s):  
Eugenio Cozzolino ◽  
Ida Di Mola ◽  
Lucia Ottaiano ◽  
Sabrina Nocerino ◽  
Maria Isabella Sifola ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilization ◽  
Growth Parameters ◽  
Seaweed Extract ◽  
Nitrogen Use ◽  
Ecklonia Maxima ◽  
Yield And Quality ◽  
Use Efficiency ◽  
Beer Production

Barley is the primary matrix for malting process of beer production. Farmers count on increasing cultivation inputs, especially nitrogen fertilization, in order to reach a higher yield. Nevertheless, an overuse of nitrogen, besides causing environmental damages, can determine a deterioration of quality traits of malting barley, in particular an increase in grains protein content, which should range between 10 and 11% as required by the mating industry. Over two successive years, barley was grown under 4 different nitrogen (N) doses—0 kg N ha−1—N0; 20 kg N ha−1—N20; 40 kg N ha−1—N40 and 60 kg N ha−1—N60, and subject to a biostimulant treatment (Ecklonia maxima seaweed extract). Barley yield and growth parameters increased with nitrogen and seaweed application. N40 was already sufficient in the second year to reach the plateau of the highest production. Biostimulant application increased 17.9% the nitrogen use efficiency, 15.7% the biomass production, and 17.0% the yield with respect to untreated plants. Our results indicate that a significant reduction in nitrogen is possible and desirable, combined with the application of a plant-based biostimulant like seaweed extract, which determines an improvement in nitrogen use efficiency, assuring a higher production and lower fertilization inputs.

scholarly journals Zinc Uptake by Plants as Affected by Fertilization with Zn Sulfate, Phosphorus Availability, and Soil Properties

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 390
Author(s):  
Ramiro Recena ◽  
Ana M. García-López ◽  
Antonio Delgado
Keyword(s):  
Soil Properties ◽  
Zn Deficiency ◽  
Acid Extraction ◽  
P Availability ◽  
Positive Role ◽  
Yield And Quality ◽  
Zn Uptake ◽  
Use Efficiency ◽  
Crystalline Oxides ◽  
Zn Availability

Zinc (Zn) deficiency constrains crop yield and quality, but soil factors influencing Zn availability to plants and reactions of applied Zn fertilizer are not fully understood. This work is aimed at studying Zn availability in soil and the use efficiency of Zn fertilizers by plants as affected by soil properties and particularly by soil available P. We performed a pot experiment involving four consecutive crops fertilized with Zn sulfate using 36 soils. The cumulative Zn uptake and dry matter yield in the four crops increased with increased initial diethylenetriamine pentaacetic acid extraction of Zn (DTPA-Zn) (R2 = 0.75 and R2 = 0.61; p < 0.001). The initial DTPA-Zn increased with increased Olsen P (R2 = 0.41; p < 0.001) and with increased ratio of Fe in poorly crystalline to Fe in crystalline oxides (R2 = 0.58; p < 0.001). DTPA-Zn decreased with increased cumulative Zn uptake, but not in soils with DTPA-Zn < 0.5 mg kg−1. Overall, the available Zn is more relevant in explaining Zn uptake by plants than applied Zn sulfate. However, in Zn-deficient soils, Zn fertilizer explained most of the Zn uptake by crops. Poorly crystalline Fe oxides and P availability exerted a positive role on Zn availability to plants in soil.

scholarly journals RESPON LIMA AKSESI JAHE PUTIH KECIL (Zingiber officinale var. Amarum) TERHADAP PEMUPUKAN

2020 ◽  
Vol 18 (2) ◽  
pp. 66
Author(s):  
MUCHAMAD YUSRON ◽  
CHEPPY SYUKUR ◽  
OCTIVIA TRISILAWATI
Keyword(s):  
Growth Parameters ◽  
Block Design ◽  
Growth Yield ◽  
Zingiber Officinale ◽  
Marginal Areas ◽  
Randomized Block Design ◽  
Pollution Research ◽  
Factor Ii ◽  
Number Of Leaves ◽  
Use Efficiency

<p>ABSTRAK<br />Penggunaan varietas jahe yang responsif terhadap pemupukan dosis<br />rendah, diharapkan mampu meningkatkan efisiensi pemupukan dan<br />menekan pencemaran lingkungan. Penelitian dengan tujuan untuk<br />mengetahui respon lima aksesi jahe putih kecil terhadap pemupukan dosis<br />rendah telah dilaksanakan di Kebun Percobaan Cimanggu pada bulan<br />Agustus 2009 sampai Mei 2010. Lima aksesi jahe putih kecil dari daerah<br />marginal ditanam dalam polibag dan disusun menggunakan rancangan<br />acak kelompok yang diulang 3 kali. Setiap perlakuan terdiri atas 20<br />tanaman. Dua perlakuan yang diuji secara faktorial adalah, faktor I adalah<br />5 aksesi jahe putih kecil, yaitu (1) Ziof 0004, (2) Ziof 0007, (3) Ziof 0008,<br />(4) Ziof 0013, dan (5) Ziof 0014, dan faktor II adalah dosis pupuk, yaitu<br />(a) 50% dosis anjuran (200 kg/ha urea + 150 kg/ha SP-36 + 150 kg/ha<br />KCl), (b) 75% dosis anjuran (300 kg/ha urea + 225 kg/ha SP-36 + 225<br />kg/ha KCl), dan (c) dosis anjuran (400 kg/ha urea + 300 kg/ha SP-36 +<br />300 kg/ha KCl). Masing-masing perlakuan diberi pupuk kandang sebagai<br />pupuk dasar dengan dosis 20 t/ha. Pengamatan dilakukan terhadap<br />parameter pertumbuhan (tinggi tanaman, jumlah anakan, diameter batang,<br />dan jumlah daun), hasil dan serapan unsur hara N, P, dan K pada umur 4<br />BST dan 9 BST. Hasil penelitian menunjukkan bahwa masing-masing<br />aksesi memberikan respon yang berbeda terhadap penurunan dosis pupuk,<br />baik pada fase pertumbuhan maupun produksi tanaman jahe. Pengurangan<br />dosis pupuk sampai 25% tidak mengurangi produksi jahe, tetapi penurunan<br />dosis pupuk sampai 50% dari dosis rekomendasi menyebabkan penurunan<br />produksi jahe secara nyata. Komposisi unsur hara N, P, dan K yang<br />diserap berbeda pada setiap fase pertumbuhan tanaman.<br />Kata kunci : Aksesi, Zingiber officinale, pemupukan, pertumbuhan,<br />produksi</p><p>ABSTRACT<br />Response of five accessions of small white ginger to<br />fertilizers<br />The use of ginger varieties responsive to low fertilization dosages,<br />is expected to increase fertilizer use efficiency and reduce environmental<br />pollution. Research aimed at observing response of five small white ginger<br />accessions of low-dosage fertilization has been conducted in the Cimanggu<br />Experimental Station in from August 2009 through May 2010. Five small<br />white ginger accessions from marginal areas were planted in polybags.<br />The experiment was and arranged using a randomized block design was<br />repeated with 3 times replications. Each treatment consisted of 20 plants.<br />Two treatments were tested factorially, where factor I : 5 small white<br />ginger accessions, namely (1) Ziof 0004, (2) Ziof 0007, (3) Ziof 0008, (4)<br />Ziof 0013, and (5) Ziof 0014, and factor II : 3 fertilization dosages is<br />dosage of fertilizer, namely (a) 50% recommendation dosage (200 kg urea<br />+ 150 kg SP-36 + 150 kg KCl per hectare), (b) 75% recommendation<br />dosage (300 kg urea + 225 kg SP-36 + 225 kg KCl per hectare), and (c)<br />recommendation dosage (400 kg Urea + 300 kg SP-36 + 300 kg KCl per<br />hectare). Each treatment was given 20 t/ha of manure as basal fertilizer.<br />The parameters observed were growth parameters (plant height, number of<br />tillers, stem diameter, and number of leaves), yield and nutrient uptake of<br />N, P, and K at 4 and 9 months after planting (MAP). The results showed<br />that each of the accessions responded differently to the reduction of<br />fertilizer dosages, either in vegetative or generative growth phase of ginger<br />plants. Reduction of fertilizer dosages to 25% did not significantly reduce<br />the yield of ginger, however, fertilizer dosages reduction up to 50% of the<br />recommended dosages led to significant decrease of ginger yield.<br />Compositions of N, P, and K nutrients absorbed by plants were different in<br />every phase of plant growth.<br />Keywords : Accessions, Zingiber officinale, fertilizer, growth, yield</p>

scholarly journals A Comprehensive Review on Sustainable Industrial Vertical Farming Using Film Farming Technology

2020 ◽  
Vol 10 (1) ◽  
pp. 46
Author(s):  
Zitian Zhang ◽  
Michel Rod ◽  
Farah Hosseinian
Keyword(s):  
Population Growth ◽  
Water Use ◽  
Cost Benefit Analysis ◽  
Arable Land ◽  
Cost Benefit ◽  
Yield Increase ◽  
Vertical Farming ◽  
Yield And Quality ◽  
Use Efficiency ◽  
Global Population

Rapid population growth is expected to lead to the global population reaching 8.9 billion by 2050. In order to sustain such population growth, global food production must grow more than 70% by 2050. Arable land per capita, however, is on the decline. Vertical farming (VF) provides an enterprising solution to these concerns. VF utilizes stacked levels of growing racks and beds to maximize grow space per square foot of land and typically uses hydroponics to reduce water use. Similarly, film farming (FF) is a new agricultural technique developed in Japan for the soilless cultivation of crops while drastically reducing water use. FF has the potential to be integrated into VF systems to improve water use efficiency, and further improve food safety. This, however, relies on the possible improvements in yield and plant quality to increase sales volume and price to offset the added cost of FF. This review illustrates a cost-benefit analysis of a theoretical VF to show the yield increase and price point needed for FF integration to be viable as 27 247 kg (43.57%) and $9.67/kg (26.90%) respectively. This review also shows the benefits to yield and quality is enough for the integration to be viable.

Total Flexibility in Forming Technology by Servo Presses

2014 ◽  
Vol 907 ◽  
pp. 99-112 ◽  
Author(s):  
Jörg Avemann ◽  
Stefan Calmano ◽  
Sebastian Schmitt ◽  
Peter Groche
Keyword(s):  
Mass Production ◽  
Degrees Of Freedom ◽  
Sheet Thickness ◽  
The Other ◽  
Adaptive Control System ◽  
High Productivity ◽  
Forming Technology ◽  
Bending Process ◽  
Product And Process ◽  
Free Bending

In forming technology, uncertainty can arouse from fluctuations in demand scenarios on one hand and in properties of semi-finished parts on the other. These technologies are usually characterized by a high productivity in mass production. However, high development efforts and investment costs for processes and machines lead to a rigid product and process spectrum. One approach to encounter these uncertainties is the introduction of flexibility into forming technologies by enlarging the number of degrees of freedom without drastically reducing productivity. The 3D Servo Press fulfils the mentioned requirements by exceeding free ram motion of conventional servo presses by two rotational ram DoFs. The adaptive control system coordinates the machine motion and controls product properties by model-based algorithms. Possibilities of this approach are demonstrated in a free bending process of a heat dissipater, resulting in uniform product quality despite variations in material, sheet thickness and desired geometry.

scholarly journals Determination of the Effect of Humic Acid on Growth and Development Parameters of Parsley (Petroselinum sativum Hoffm.) Grown in Boron Soil

2018 ◽  
Vol 47 (1) ◽  
pp. 183-193 ◽  
Author(s):  
Tuncay TURSUN ◽  
Sener AKINCI ◽  
Esin BOZKURT
Keyword(s):  
Humic Acid ◽  
Growth Parameters ◽  
Dry Weight ◽  
High Yield ◽  
Yield And Quality ◽  
Icp Ms ◽  
Growth Analyses ◽  
Nutrient Solutions

Boron is an important micronutrient, required for all plant growth, and critical for high yield and quality of crops. The aim of the present research was to determine the effects of boron on pot-grown parsley (Petroselinum sativum Hoffm.). The experimental design consisted of four treatments using Hoagland-Arnon (1950) nutrient solutions with two different boron concentrations (B1 - 15 ppm and B2 - 150 ppm), each with and without 10 ml humic acid addition (HB1 and HB2), and controls with full strength Hoagland-Arnon solutions. Growth analyses of the parsley revealed that 15 ppm boron application caused an increase in root length leaf fresh and dry weight root fresh and dry weight and leaf area compared to control values. 150 ppm B (B2) concentration decreased all growth parameters compared to controls. The two humic acid treatments (HB1 and HB2) did not increase any of those growth parameters either in controls (C) or in the two boron (B1 and B2) concentrations. Analysis by (ICP-MS) revealed that B content in the leaves increased gradually in B1 and B2, as well as in both humic treatments where in HB2 it increased to 99.38% compared to B1. In the leaves, Mn, Zn and Fe contents behaved the same as B, increasing in all treatments, with the amounts in HB2 being significantly greater than in C, B1 and B2 leaves.

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