Effects of combined application of vermicompost and mineral fertilizer on the growth of Allium cepa L. and soil fertility

2011 ◽  
Vol 175 (1) ◽  
pp. 101-107 ◽  
Author(s):  
Pankaj Kumar Srivastava ◽  
Manjul Gupta ◽  
Rakesh Kumar Upadhyay ◽  
Suresh Sharma ◽  
Shikha ◽  
...  
2019 ◽  
Vol 12 (18) ◽  
Author(s):  
Mumtaz Khan ◽  
Kaneez Fatima ◽  
Rehan Ahmad ◽  
Rafia Younas ◽  
Muhammad Rizwan ◽  
...  

Proceedings ◽  
2021 ◽  
Vol 66 (1) ◽  
pp. 20
Author(s):  
Marika Pellegrini ◽  
Daniela M. Spera ◽  
Claudia Ercole ◽  
Maddalena del Gallo

The present work was aimed at investigating the effects of a four strains consortium—Azospirillum brasilense, Gluconacetobacter diazotrophicus, Herbaspirillum seropedicae, and Burkholderia ambifaria—on crops of Allium cepa L. and its soil health. The bacterial consortium was inoculated on seeds of two different onion varieties; inoculated seeds and control ones (treated with autoclaved inoculum) were sown in open-field and followed until harvest. Plant growth development parameters, as well as soil physico-chemical and molecular profiles (DNA extraction and 16S community sequencing on the Mi-Seq Illumina platform), were investigated. The results showed a positive influence of bacterial application on plant growth, with increased plant height (+18%), total chlorophylls (+42%), crop yields (+13%), and bulbs dry matter (+3%) than the control. The differences between control and treated experimental conditions were also underlined in the bulb extracts in terms of total phenolic contents (+25%) and antioxidant activities (+20%). Soil fertility and microbial community structure and diversity were also positively affected by the bacterial inoculum. At harvest, the soil with the presence of the bacterial consortium showed an increase of total organic carbon, organic matter, and available P and higher concentrations of nutrients than control. The ecological indexes calculated on the molecular profiles showed that community diversity was positively affected by the bacterial treatment. The present work allowed to remark the effective use of plant growth-promoting bacteria as a valid fertilization strategy to improve yield in productive landscapes, whilst safeguarding soil biodiversity.


The main objective of the project is to design and fabricate an automated onion planting machine. The onion (Allium cepa L) is one of the commonly used crops which are grown in most of the farms in India and abroad for their consumption purpose and also export purpose. Onion growing farmers undergo hurdles in planting of onion seedlings because of shortage of farming labours during planting onion crops. So, necessity of developing an automated onion planting machine increased. Various physical properties like soil, weather, plant, seedlings, and soil fertility were determined to fabricate the automated onion planting machine. The automated onion planting machine plants onion plants in straight row at a predefined interval between each plant without any human intervention using automation. Automation plays a major factor in developing the automated onion planting machine to save farmers time and labour cost to plant onion plants in a row


Author(s):  
A. M. Isah ◽  
M. Audu ◽  
A. U. Dikko ◽  
U. Aliyu ◽  
E. A. Manasseh

A field experiment was conducted to determine the effect of combined application of fortified poultry manure with ash and NPK fertilizer on the performance of sakanal onions (Allium cepa L.) variety during 2018/2019 dry season in Chimola (Gwadabawa LGA) and Wurno (Wurno LGA), Sokoto State. The treatments consisted of three (3) levels combination of fortified poultry manure with ash (1:3 ratio) at 5, 10 and 15t ha-1 and three (3) levels of NPK at 30, 45 and 60kg ha-1 which were combined and laid-out in a randomized complete block design (RCBD) replicated three (3) times. Sakanal onion variety was used as a test crop. The data generated were subjected to analysis of variance (ANOVA) procedure for RCBD using SPSS version 23.0. The results revealed that fortified poultry manure with ash and NPK fertilizer significantly (P<0.05) affected Growth and yield parameters such as plant height (71 - 62 cm), number of leaves (8), fresh bulb yield (70t ha-1), crop growth rate (1.52g cm-1) in Chimola and Wurno. Individual bulb weight (300g), bulb diameter (7.8cm) were significantly (P<0.05) affected in Wurno location. Cured buld yield (55t ha-1) responds significantly (P<0.05) to the application of fortified poultry manure with ash and NPK fertilizer in Chimola location. The result of the study revealed that application of fortified poultry manure with ash and NPK fertilizer (P15NPK3) significantly improved the performance and shelf-life of sakanal onion variety and physical and chemical properties of the soils in the study area.


Author(s):  
V. T. Sinegovskaya ◽  
E. T. Naumchenko

The article presents the results of comparative evaluation of the efficiency of the long-term application of mineral and organic fertilizers in the crop rotation system. It was found that the application of the mineral fertilizer system increased the value of hydrolytic acidity of the soil from 4,30 to 5,29 mg-eq per 100 g of soil, the indicator of metabolic acidity decreased from 5,2 to 4,9 pH units. By the end of the 11th rotation for both fertilizer systems, the content of mobile phosphorus increased by more than 4 times relative to the initial value, its mobility indicator – by 2,2-3,2 times compared with the control. The use of the organo-mineral system was accompanied by an increase in the content of humus by 0,35 % and a decrease in the C:N ratio from 11,2 to 8,9. The increased productivity of wheat was revealed when applying nitrogen and nitrogen-phosphorus fertilizers against the background of prolonged use of the mineral and organo-mineral fertilizer system. The change in wheat productivity by 56 % depended on the content of mineral nitrogen, mobile phosphorus, humus in the topsoil, and on the phosphate ion mobility. Soybean productivity depended on soil fertility indicators only by 24 %: the relationship between soybean productivity and the mineral forms of nitrogen and phosphorus is weak and direct, between productivity and P2O5 mobility - weak and inverse, with humus - moderate and direct.


2018 ◽  
Vol 481 (1) ◽  
pp. 99-103
Author(s):  
А.Я. Болсуновский ◽  
Д.В. Дементьев ◽  
Е.М. Иняткина ◽  
Ю.В. Кладько ◽  
М.В. Петриченков ◽  
...  
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