scholarly journals Impact of the Hydroponic Cropping System on Growth, Yield, and Nutrition of a Greek Sweet Onion (Allium cepa L.) Landrace

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 432
Author(s):  
Christos Mouroutoglou ◽  
Anastasios Kotsiras ◽  
Georgia Ntatsi ◽  
Dimitrios Savvas
Keyword(s):  
Nutrient Uptake ◽  
Growth Yield ◽  
Cropping System ◽  
Dry Weight ◽  
Nutrient Film Technique ◽  
Allium Cepa L ◽  
Maturation Stages ◽  
Affected Tissue ◽  
Mat Density ◽  
Mineral Concentrations

Nerokremmydo of Zakynthos, a Greek landrace of sweet onion producing a large bulb, was experimentally cultivated in a glasshouse using aeroponic, floating, nutrient film technique, and aggregate systems, i.e., AER, FL, NFT, and AG, respectively. The aim of the experiment was to compare the effects of these soilless culture systems (SCSs) on plant characteristics, including fresh and dry weight, bulb geometry, water use efficiency, tissue macronutrient concentrations, and uptake concentrations (UC), i.e., uptake ratios between macronutrients and water, during the main growth, bulbing, and maturation stages, i.e., 31, 62, and 95 days after transplanting. The plants grown in FL and AG yielded 7.87 and 7.57 kg m−2, respectively, followed by those grown in AER (6.22 kg m−2), while those grown in NFT produced the lowest yield (5.20 kg m−2). The volume of nutrient solution (NS) consumed per plant averaged 16.87 L, with NFT plants recording the least consumption. The SCS affected growth rate of new roots and “root mat” density that led to corresponding nutrient uptake differences. In NFT, reduced nutrient uptake was accompanied by reduced water consumption. The SCS and growth stage strongly affected tissue N, P, K, Ca, Mg, and S mineral concentrations and the respective UC. The UC of N and Κ followed a decreasing trend, while that of Mg decreased only until bulbing, and the UC of the remainder of the macronutrients increased slightly during the cropping period. The UC can be used as a sound basis to establish NS recommendations for cultivation of this sweet onion variety in closed SCSs.

scholarly journals Aplikasi Mikoriza Arbuskula Untuk Meningkatkan Serapan Fosfat, Pertumbuhan Dan Produksi Tanaman Bawang Merah (Allium ascalonicum L.)

2019 ◽  
Vol 15 (1) ◽  
pp. 59
Author(s):  
Muhammad Mujibur Rahman ◽  
Akhmad Rizalli Saidy ◽  
Chatimatun Nisa
Keyword(s):  
Arbuscular Mycorrhiza ◽  
Nutrient Uptake ◽  
Quartz Sand ◽  
Phosphate Uptake ◽  
Growth Yield ◽  
Dry Weight ◽  
Efficient Treatment ◽  
P Fertilizer ◽  
Nutrient Fertilization ◽  
The University

One of the problems in phosphate nutrient fertilization is a low level of efficiency, so the application of arbuscular mycorrhiza is often done to increase phosphate uptake. In this study mycorrhizal was applied to shallots which were given P fertilizer to assess the effect of mycorrhizal applications on growth, yield, and phosphate uptake. This research was carried out at the Faculty of Agriculture's Greenhouse of the University of Lambung Mangkurat Banjarbaru from March to May 2016. The seed of shallot was grown on 5 kg of soil and quartz sand (3:1) fertilized by P (0, 50, 100, 150, 200 and 250 kg SP-36 ha-1) and applied with mycorrhiza (without and with 10 g of plant-1 mycorrhizal inoculum) at planting. The observations made after 75 days after planting showed that the application of arbuscular mycorrhiza was effected to improve several observation variables, namely plant dry weight, bulb dry weight, phosphate nutrient uptake, and phosphate efficiency. The application of mycorrhiza at phosphate doses of 250 kg SP-36 ha-1 can increase plant dry weight by 97% and bulb dry weight by 203% compared to without mycorrhiza. Whereas the application of mycorrhiza at a phosphate dose of 100 kg SP-36 ha-1 is the best and most efficient treatment to increase phosphate nutrient uptake and phosphate efficiency. The results of this study show that the application of mycorrhizal can increase nutrient uptake of phosphate which ultimately increases the growth and production of shallot plants. 

Contribution of arbuscular mycorrhizal (AM) fungi and hedgerow trees to the yield and nutrient uptake of cassava in an alley-cropping system

1998 ◽  
Vol 131 (1) ◽  
pp. 79-85 ◽  
Author(s):  
O. FAGBOLA ◽  
O. OSONUBI ◽  
K. MULONGOY
Keyword(s):  
Nutrient Uptake ◽  
Alley Cropping ◽  
Cropping System ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Dry Weight ◽  
P Uptake ◽  
Root Competition ◽  
Woody Legumes ◽  
Woody Legume

A field trial on alley-cropping was conducted at the University of Ibadan research farm in the 1990/91 cropping season to assess the contributions of arbuscular mycorrhizal (AM) fungi and hedgerow woody legumes to the yield and nutrient uptake of cassava (Manihot esculenta Crantz) as an intercrop in an infertile soil. The trial also investigated the influence of AM fungi on the interplanting of a non-nodulating woody legume Senna siamea (syn. Cassia siamea) with a nodulating woody legume (Leucaena leucocephala).AM contributions to cassava were greater than the hedgerow contributions, which demonstrated that AM associations are an essential component in the nutrition of cassava. In contrast to cassava, AM inoculation only influenced the leaf dry weight and uptake of nutrients of non-interplanted woody legumes but not the above-ground biomass and P uptake of interplanted woody legumes. However, non-inoculated interplanted Leucaena benefited more from indigenous AM fungi than the competing Senna. The negative contributions to the nutrient uptake (K, Ca and Mg) of cassava by hedgerows and the lack of response to AM inoculation in interplanted hedgerow woody legumes could be attributed to root competition among the different plant species growing in close proximity to each other. The present results show that cassava benefits more from AM association than Leucaena which in turn benefits more than Senna in an alley-cropping system.

scholarly journals Effects of Inoculation with Rhizobium and Arbuscular Mycorrhiza and Phosphorus on Growth, Yield and Nutrient Uptake by Pea Grown in Soil

1970 ◽  
Vol 27 (1) ◽  
pp. 22-27
Author(s):  
MM Rahman ◽  
ARM Solaiman ◽  
D Khanam ◽  
AJM Sirajul Karim ◽  
MA Karim
Keyword(s):  
Arbuscular Mycorrhiza ◽  
Nutrient Uptake ◽  
Root Colonization ◽  
Nitrogenase Activity ◽  
Growth Yield ◽  
Dry Weight ◽  
Growth And Yield ◽  
Maximum Output ◽  
Pod Yield ◽  
Dual Inoculation

The experiment was conducted in pot at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh to study the response of pea (Pisum sativum) cv. IPSA Motorshuti-3 to dual inoculation with Rhizobium (R) and Arbuscular Mycorrhiza (AM) in presence and absence of phosphorus (P) on root colonization, spore population, nodulation, nitrogenase activity, growth, yield, and nutrient uptake by shoot. The performance of Rhizobium inoculant alone was superior to control in all the parameters of the crop studied. Among the treatments dual inoculation with Rhizobium and Arbuscular Mycorrhiza in combination with 25 kg P ha-1 performed best in recording per cent root colonization, number and dry weight of nodules, dry weight of shoots, nitrogenase activity, number of pods/plant, number of seeds/pod, pod and seed yields, and nutrient uptake by pea. This treatment combination recorded green pod yield of 12.0 g/plant (140 % increase over control) and mature pod yield of 7.0 g/plant (146% increase over control). The effect of this treatment was however similar to the effect of dual inoculation with R and AM in combination with 12.5 kg P ha-1 in most of the parameters. From the view point of nodulation, nitrogenase activity, growth, and yield of pea, dual inoculation with Rhizobium inoculant and arbuscular mycorrhiza in combination with 25 kg P ha-1 was considered to be the best for the supply of balanced combination of nutrients for achieving the maximum output through cultivation of pea in Shallow Red Brown Terrace soil of Bangladesh. Keywords: Pea; Rhizobium; Arbuscular mycorrhiza; Phosphorus DOI: http://dx.doi.org/10.3329/bjm.v27i1.9164 BJM 2010; 27(1): 22-27

scholarly journals Effects of Different Nitrogen and Sulfur Fertilizer Rates on Growth, Yield, Quality and Nutrient Uptake of Onion (Allium cepa L.) at Shewa Robit, North Shewa, Ethiopia

2021 ◽  
Vol 15 (1) ◽  
pp. 59-67
Author(s):  
Mandefro Tilahun ◽  
Wondwosen Tena ◽  
Bizuayehu Desta
Keyword(s):  
Nutrient Uptake ◽  
Block Design ◽  
N Uptake ◽  
Growth Yield ◽  
Dry Weight ◽  
Average Weight ◽  
Dry Matter Content ◽  
Area Index ◽  
Yield And Quality ◽  
Yield Quality

Background: Onion is one of the most important crops widely cultivated throughout the world, including Ethiopia. The production of onion is mainly affected by the inadequate application of inorganic fertilizer types and rates. Objective: A field experiment was conducted to evaluate the effect of nitrogen and sulfur fertilizers on the growth, yield, quality, and nutrient uptake of onion at Shewa Robit in 2018/19 under irrigation. Methods: The experiment consisted of four nitrogen rates (100, 150, 200, and 250 kg N /ha) and five sulfur rates (0, 15, 30, 45, and 60kg S/ha). The treatments were laid out in a factorial arrangement with three replications using randomized complete block design (RCBD). Bombay Red was used as a testing onion variety. Results: The interaction effect of nitrogen and sulfur significantly increased plant height, leaf length, leaf diameter, leaf area index, neck diameter, shoot dry weight, bulb fresh weight and bulb dry weight, percent dry matter content, yield, and quality parameters. The application of 200kg N/ha and 45 kg S/ha resulted in the highest yield (42.6 t ha-1), the average weight of bulb (193.6g), and a marketable bulb (99.8%). The highest N uptake (243.3 kg ha-1) and S uptake (31.9kg ha-1) were obtained by the combined application of 200 kgN/ha and 45kg S/ha. Conclusion: The application of 200 kgN/ha and 45kgS/ha can be recommended for high yield and quality onion production in the study area.

scholarly journals Application of saline tolerant bacteria and soil ameliorants improved growth, yield and nutrient uptake of tomato in saline land

2021 ◽  
pp. 827-834
Author(s):  
Nurul Aini ◽  
Wiwin Sumiya Dwi Yamika ◽  
Luqman Qurata Aini ◽  
Agus Prayitno Kurniawan
Keyword(s):  
Nutrient Uptake ◽  
Agricultural Sector ◽  
N Uptake ◽  
Growth Yield ◽  
Dry Weight ◽  
P Uptake ◽  
Growth And Yield ◽  
Cow Manure ◽  
Effect On Yield ◽  
Almost All

Salinity is one of the problems in agricultural sector widespread in almost all countries in the world, which could reduce crops yield. This research was carried out to study the effect of frequency application of consortium saline-tolerant bacteria isolates with different soil ameliorants on growth and yield of tomato grown saline lands. Research was conducted using split plot design with three replications. Soil ameliorants (Cow manure and gypsum) were the main plot while sub-plots were frequency applications of consortium bacterial isolates (without bacterial, once, twice, three and four times). In this study, bacteria consortium was SN13 (Streptomyces sp.) + SN22 (Bacillus sp.) and SN23 (Corynebacterium sp.) which isolated from the soil of saline-prone regions of Lamongan, in coastal East Java Indonesia. Results showed that gypsum and cow manure as soil ameliorant did not give significant effect on yield and nutrient uptake of tomato while application of saline-tolerant bacteria was able to improve yield and nutrient uptake of tomato. However, the four times application of saline-tolerant bacteria significantly improved plant height (23.36 %), leaves area (96,49 %), total chlorophyll content (11.86 %), dry weight of plant (103.59 %), fresh weight of fruit (85.51 %), N uptake (135.22 %), P uptake (132.99 %), K uptake (141.68 %) and declined Na uptake (16.28 %), compared to without bacteria application. In conclusion, four times application of saline-tolerant bacteria can alleviate salinity stress of tomato plants in saline lands

Comparative assessment of different nutrient sources on growth, yield and nutrient uptake by onion (Allium cepa L.)

2021 ◽  
pp. 1-7
Author(s):  
Manisha Negi ◽  
Jagjeet Chand Sharma ◽  
Yog Raj Shukla ◽  
Anjali Chauhan ◽  
Saurabh Sharma ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Allium Cepa ◽  
Growth Yield ◽  
Comparative Assessment ◽  
Nutrient Sources ◽  
Allium Cepa L

Minimization of activated sludge production by chemically stimulated energy spilling

2000 ◽  
Vol 42 (12) ◽  
pp. 189-200 ◽  
Author(s):  
G.-H. Chen ◽  
H.-K. Mo ◽  
S. Saby ◽  
W.-k. Yip ◽  
Y. Liu
Keyword(s):  
Activated Sludge ◽  
Growth Yield ◽  
Dry Weight ◽  
Staining Technique ◽  
Microbial Culture ◽  
Dapi Staining ◽  
E Coli ◽  
Energy Spilling ◽  
Activated Sludge Processes ◽  
Sludge Production

Minimization of excess sludge production in activated sludge processes has been pursued around the world in order to meet stringent environmental regulations on sludge treatment and disposal. To achieve this goal, physical, chemical, and biological approaches have been proposed. In this paper, a chemical compound, 3,3′,4′,5-tetrachlorosalicylanilide (TCS) was tested for enhancing microbial energy spilling of the sludgeso as to minimize its growth. In order to examine this, an exploratory study was conducted using both batch and continuous activated sludge cultures. Batch experiments with these two cultures were carried out at different initial concentrations of TCS. It has been confirmed that an addition of TCS is effective in reducing the production of both the sludge cultures, particularly the continuous culture where the observed growth yield was reduced by around 70%, when the initial TCS concentration was 0.8 ppm. Meanwhile, the substrate removal activity of this culture was found not to be affected at this TCS concentration. To further evaluate the TCS effect, a pure microbial culture of E. coli was employed. Batch experiment results with this culture implied that TCS might be able to reduce the cell density of E. coli drastically when an initial TCS concentration was greater than 0.12 ppm. It was also found that TCS was not toxic to this type of bacteria. Microscopic examinations with a 4′, 6-diamidino-2-phenylindole (DAPI) staining technique revealed that TCS neither affected the cell division nor altered the cell size of E. coli. However, both the cell ATP content and the cell dry weight were reduced significantly with the addition of TCS.

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