scholarly journals Effect of biofertilizers on yield and morphological parameters of onion cultivars

2019 ◽  
Vol 31 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Bojana Petrovic ◽  
Tomas Kopta ◽  
Robert Pokluda
Keyword(s):  
Field Experiments ◽  
Growing Season ◽  
Point Of View ◽  
The Other ◽  
Organic Fertilizers ◽  
Morphological Parameters ◽  
Economic Point ◽  
Number Of Leaves ◽  
Algal Extracts ◽  
Bulb Yield

AbstractThe present study evaluated the effect of different organic fertilizers on the morphological parameters and yield in two different onion cultivars. Proper use of organic fertilizers in appropriate amounts could be helpful to growers from the economic point of view. Field experiments were conducted to study the effect of three different organic biofertilizers on yield and morphological parameters of two onion cultivars ‘Stuttgarter Riesen’ and ‘Rote Laaer’ during 2016 and 2017. The investigated treatments included: B-Stimul® – a mixture of bacterial and algal extracts, EkoBooster 2® – organic matter and NPK, and VermiFit A® – an extract of compost produced by Californian earthworms, peat, nutrients, plant hormones, enzymes, amino acids, and sugars. The following parameters of onion plants were evaluated: number of leaves, bulb diameter, bulb weight, marketable and total yields. The study showed that all the results were affected by the growing season (higher values were recorded in 2016). In ‘Stuttgarter Riesen’, EkoBooster 2® application resulted in the highest bulb weight in 2016 (67.16 g) and in 2017 (55.17 g) and in the highest number of leaves in 2016 (6.66) and in 2017 (6.30), which led to the highest marketable bulb yield in 2016 (3.47 kg m−2) and in 2017 (2.53 kg m−2). In ‘Rote Laaer’ in 2016, EkoBooster 2® application resulted in the highest number of leaves (7.06), bulb diameter (54.32 mm) and bulb weight (79.30 g). In 2017, the largest bulb diameter (54.13 mm) and the highest bulb weight (71.79 g) and marketable bulb yield (2.39 kg m−2) were determined after VermiFit A® application. EkoBooster 2® showed the best effect on parameters such as the number of leaves, bulb weight, and marketable bulb yield of the cultivar ‘Stuttgarter Riesen’ and positively affected the parameters of ‘Rote Laaer’ during 2016, while in 2017 VermiFit A® showed better results as compared to the other treatments.

scholarly journals Una aproximación a la complejidad social e ideológica en Baja California Sur / Social and Ideological Complexity in Baja California Sur: an Approach

2016 ◽  
Vol 5 (1) ◽  
pp. 81-94
Author(s):  
Rossana Almada Alatorre ◽  
Rosa Elba Rodríguez Tomp
Keyword(s):  
Twentieth Century ◽  
Foreign Investment ◽  
Baja California ◽  
Point Of View ◽  
The Other ◽  
Baja California Sur ◽  
Economic Point ◽  
Complex Thought ◽  
Siglo Xx ◽  
Society Today

ABSTRACTUnderstanding sudcalifornian society today requires the adoption of a perspective that is anchored in the complex thought, given the fact that during the last two decades of the twentieth century it has been the recipient of multiple elements that have served as catalysts for changes and setbacks in the construction of subjectivity. We witness the emergence of advances in terms of what is understood as “development” from an economic point of view, based on the opening to domestic and foreign investment; politically and ideologically we lurch from side to side, with the citizens' vote alternating between personalities deeply entrenched in the community more than being based on concrete political proposals. “Values” in terms of morality and traditions emphasise, on one side, the respect and tolerance which have characterised Sudcalifornia at least for the second half of the twentieth century; but, on the other hand, are skewed towards shaping a society that could be called neoconservative, for it adopts positions and values already vindicated by other societies in the heart of the countryRESUMENComprender en la actualidad a la sociedad sudcaliforniana requiere de una perspectiva anclada en el pensamiento complejo pues a partir de las últimas dos décadas del siglo XX ha sido receptora de una multiplicidad de elementos que han servido como impulsores de cambios y retrocesos en la construcción de la subjetividad. Asistimos a la emergencia de avances en términos de lo que se entiende por “desarrollo” desde la visión económica, con base en la apertura a la inversión nacional y extranjera; política e ideológicamente damos tumbos de un lado a otro, alternando el voto ciudadano más entre personalidades arraigadas en la entidad que con base en propuestas políticas concretas; los “valores” en términos de la moral y las costumbres, por un lado acentúan el respeto y la tolerancia que ha caracterizado a Sudcalifornia al menos durante la última mitad del siglo XX y, por otro, se sesgan hacia la configuración de una sociedad que podríamos denominar neoconservadora, pues adopta posturas y valores reivindicados por las sociedades del centro del país.

scholarly journals Quality of pre-sprouted sugarcane seedlings grown on substrates with decomposed babassu palm stem

2021 ◽  
Vol 51 ◽  
Author(s):  
Romário Martins Costa ◽  
Marcos Renan Lima Leite ◽  
Sâmia dos Santos Matos ◽  
Rayssa Carolinne Mouzinho de Sousa ◽  
Raissa Rachel Salustriano da Silva-Matos ◽  
...  
Keyword(s):  
Growth And Development ◽  
Dry Mass ◽  
Quality Parameters ◽  
Point Of View ◽  
Production Costs ◽  
Economic Point ◽  
Babassu Palm ◽  
Number Of Leaves ◽  
The Cost

ABSTRACT The use of pre-sprouted seedlings in the implantation of sugarcane crops not only reduces the establishment period and production costs, but also has other advantages, such as a lesser requirement of propagules (stems) and greater phytosanitary control of the seedlings, when compared to conventional planting. Commercial substrates are also expensive and their use increases the cost of seedlings. This study aimed to evaluate the quality of sugarcane pre-sprouted seedlings grown on substrates with different proportions of decomposed babassu palm stem (DBPS), as well as to recommend the substrate formulation that provides the most favorable environment for the growth and development of sugarcane pre-sprouted seedlings. For preparation of the substrate (S), DBPS and soil were used in the following proportions: S1: 0 % of DBPS + 100 % of soil; S2: 20 % of DBPS + 80 % of soil; S3: 40 % of DBPS + 60 % of soil; S4: 60 % of DBPS + 40 % of soil; S5: 80 % of DBPS + 20 % of soil; S6: 100 % of DBPS + 0 % of soil. The use of S2 and S3 considerably improved the seedling quality parameters, such as sprout diameter and length, number of leaves and total, shoot and root dry mass. However, from an economic point of view, S2 is recommended for use.

Ecological-economically balanced functioning of combined drainage systems on heavy soils Novgorod region

2020 ◽  
Vol 0 (2) ◽  
pp. 30-33
Author(s):  
Ol'ga Balun
Keyword(s):  
Soil Moisture ◽  
Drainage System ◽  
Growing Season ◽  
Point Of View ◽  
Ecological Indicator ◽  
Economic Point ◽  
Drainage Systems ◽  
Experimental Field ◽  
Closed Drainage ◽  
Probability Of Precipitation

The article deals with the ecological and economically balanced functioning of combined drainage systems on heavy soils of the Novgorod region. The water-air regime of the drained lands and the parameters influencing it (a drainage drain, a level of ground waters) is considered as an ecological indicator, and economic – increase of productivity of lands. The studies were carried out at the experimental experimental field, drained by closed drainage with backfilling of the drainage trench of the sand-gravel mixture to the arable horizon (control), two-tier drainage and a combination of with deep loosening. The analysis of the results of the study showed that the experimental combined drainage system was set aside 88% more runoff compared with control; in the excessively wet growing season (25% probability of precipitation), the system of two-tier drainage there was the lowest level of groundwater and soil moisture; the effect of deep loosening began to decrease by 3 year of operation of combined drainage, so it is recommended to carry out deep loosening on loamy soils every 3 years; from the ecological and economic point of view the most balanced option is the combined two-tier drainage.

scholarly journals Organic Fertilizers Vis-à-vis Growth Performance of Euphorbia fulgens

2016 ◽  
Vol 12 (18) ◽  
pp. 24
Author(s):  
Florita O. Odivilas
Keyword(s):  
Experimental Design ◽  
Growth Performance ◽  
Plant Height ◽  
Growth Parameters ◽  
The Other ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Insignificant Difference ◽  
Number Of Leaves ◽  
Made In

This study was conducted to find out the effect of fertilizers on the performance of two hybrids of Euphorbia as indicated by growth and flowering performance. The experimental design with controlled variables was used in the study. The use of organic fertilizers like the use of animal dungs or wastes was proven effective based on the different trials made. In terms of the effect of the fertilizers in the growth performance, there were significant differences on plant height, stem girth, number of leaves, and number of shoots during the 20th, 50th and 80th days of observations. The number of flowers was found to have significant differences in all stages. When measured during the 80th day of observation, significant differences were shown in the size of flowers. However, insignificant difference was shown in the diameter of flower bracts. As to the growth parameters, carabao manure yielded more leaves, and shoots and taller Euphorbia Orchid. It also produced bigger stem girths, wider and longer leaf sizes of Siam Ruby hybrid. As to flowering parameters, carabao manure influenced the growth of more number of flower clusters and bigger sizes of flowers of Euphorbia Orchid. On the other hand, chicken manure also influenced the growth of more number of flowers per cluster of Siam Ruby during the 50th day observation and carabao manure during the 20th day observation.

scholarly journals Evaluation of Different Organic Fertilizers in the Sustainable Cultive of Coriander

2019 ◽  
Vol 11 (6) ◽  
pp. 299
Author(s):  
Rafael Santiago da Costa ◽  
Letícia Kenia Bessa de Oliveira ◽  
José Lucas Guedes dos Santos ◽  
Aiala Vieira Amorim ◽  
Jorge Cá ◽  
...  
Keyword(s):  
Block Design ◽  
Leaf Length ◽  
Point Of View ◽  
Stem Diameter ◽  
Organic Fertilizers ◽  
Size Number ◽  
Randomized Complete Block Design ◽  
Different Types ◽  
Number Of Leaves ◽  
Root Size

The excessive use of agrochemicals in agriculture has been causing irreversible environmental impacts, from this point of view, organic farming appears as an economically viable alternative to minimize these impacts. So, the objective of this work was to evaluate the effect of different types organic fertilizers in the development and production of coriander harvested at different epochs. The experiment was conducted during the period from August to October 2016, in an area of the experimental farm of University of International Integration of Afro-Brazilian Lusophony. The experimental design was a randomized complete block design, in a 5 × 4 factorial scheme, consisting of five organic fertilizers and four harvesting epochs (28, 35, 42 and 49 days after planting-DAP) and five blocks. The variables stem diameter, plant height, root size, number of leaves, leaf length and productivity were evaluated. All the analyzed variables responded significantly by the F test, either for the qualitative factor, fertilizer sources, or the quantitative, epochs of evaluation. Regarding the cultivation epochs, when the first evaluation period (28 DAP) was compared with the last (49 DAP), it was verified that the variables presented linear responses over time, with increases of 34.4% for height , 29.5% for stem diameter, 37.07% for root length and 64.44% for production. In relation to the fertilizer sources, in general, the cattle manure provided a greater growth and production of the coriander plants, being therefore the most suitable for the cultivation.

scholarly journals A Survey of Fertility Program Responses of Kentucky Dark Fire-Cured Tobacco (Nicotiana tabacum L.) Yield and Quality for Cigars Manufacture in the Benevento Province (Southern Italy)

2018 ◽  
Vol 28 (1) ◽  
pp. 14-29
Author(s):  
Maria Isabella Sifola ◽  
Linda Carrino ◽  
Eugenio Cozzolino ◽  
Sara Ianuario ◽  
Andrea Lucibelli ◽  
...  
Keyword(s):  
Field Experiments ◽  
Southern Italy ◽  
Total Yield ◽  
N Fertilization ◽  
Point Of View ◽  
Production Costs ◽  
Total N ◽  
Economic Point ◽  
Total Alkaloids ◽  
Light Filler

SummaryNitrogen (N) fertilization of Kentucky dark fire-cured tobacco can be used to increase weight of high quality cured leaves for cigar manufacture. We conducted field experiments at 11 different locations in the province of Benevento (Southern Italy) where the following four N treatments were compared: 1) unfertilized control (N0); 2) a site-specific N rate, calculated by a N fertilization plan (NFP) based on physical and chemical soil characteristics, which ranged between 113 and 145 kg N ha−1; 3) 200 kg N ha−1 (rate commonly used by farmers, N200); 4) 100 kg N ha−1 (half of the rate commonly used by farmers, N100). Yields of the following five commercial quality categories of cured leaves were measured: i) wrappers, ii) heavy filler (Fh), iii) light filler (Fl), iv) heavy shredded (Sh) and v) light shredded (Sl). Fh cured products of B1, B4, B6 and B10 locations were analyzed for: total alkaloids, reducing sugars, chlorides, total N (Kjeldahl), ammonium-N (NH4-N), nitrate-N (NO3-N), and tobacco specific nitrosamines (TSNA). Color parameters: Lightness (L), Chroma (C) and Hue (H) were determined on five cured leaves / plot of both Fh and Fl types at B1, B2, B3, B6, B8 and B10. A blind evaluation of cured leaves collected across locations was conducted by a panel test who considered the main basic characteristics of cured leaves (stalk position, leaf structure, texture, etc.). The total yield of cured products increased with fertilization across locations, up to NFP treatment, without any statistically significant increase at N200 treatment. Fertilization increased yield of wrappers at B1 up to NFP treatment (113.5 kg N ha−1), without any significant increase at N200 treatment. Yield of light filler product was positively influenced by fertilization up to the maximum dose only in 5 out of 11 locations. Total alkaloids significantly increased with increasing fertilization up to 100 kg N ha−1 without any significant changes at higher N rate. Fertilization hardly increased L and C of Fl leaves, which appeared light-brown but brilliant-colored. There was a reduction in the H value of Fh products which indicated a darker tone of those leaves with respect to Fl. Increasing N rate affected production costs more than revenues. According to agronomic results, in most locations the best results in terms of net revenues were obtained by NFP treatment. Considering that N rates above the NFP would disqualify growers from the economic aids provided by EU agrienvironmental measures, by economic point of view the NFP treatment would be recommended over the current grower standard (N200).

Response of onion (Allium cepa L.) yield to water stress and mineral biofertilization

2011 ◽  
Vol 59 (4) ◽  
pp. 361-370 ◽  
Author(s):  
A. Kandil ◽  
A. Attia ◽  
A. Sharief ◽  
A. Leilh
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Field Experiments ◽  
Field Capacity ◽  
Dry Weight ◽  
The Other ◽  
Soil Water Tension ◽  
Total Percentage ◽  
Water Tension ◽  
Bulb Yield

Two field experiments were conducted at the Experimental Station of the Faculty of Agriculture, Mansoura University, Egypt, during the 2006/2007 and 2007/2008 seasons. The results showed that a gradual increase in soil water tension from 24 centibars (cb) (5588.25 m3/ha), i.e. 56.3% field capacity to 36 cb (2634.49 m3/ha), i.e. 41.% field capacity, significantly decreased the average onion bulb weight (g), bulb diameter (cm), bulb length (cm), total bulb yield (t/ha) and marketable bulb yield (t/ha) and significantly reduced the total percentage loss after 2, 4 and 6 months in both seasons. Conversely, this increase in water tension significantly amplified the culled bulb yield (t/ha), bulb dry matter (%) and water use efficiency (kg/m3). Normal water supplies (24 cb) clearly led to high percentage losses in bulb dry weight compared to the other water stress treatments. The results indicated that the application of 75% NPK plus the bio-fertilizer Soft Guard significantly improved the average bulb weight (g/plant), bulb diameter (cm), bulb length (cm), total bulb yield (t/ha), marketable bulb yield (t/ha) and dry matter (%) compared with the other fertilization treatments.

scholarly journals Изменение некоторых морфологических показателей грозди и ягоды винограда под влиянием регуляторов роста

2019 ◽  
pp. 312-316
Author(s):  
Elena Ghinda
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Field Experiments ◽  
Growing Season ◽  
Table Grape ◽  
Morphometric Parameters ◽  
Morphological Parameters ◽  
Grape Varieties ◽  
Number Of Seeds

В статье приведены результаты полевых опытов по изучению применения регуляторов роста растений гиббереллин (100 мг/л), мицефит (10 и 100 мг/л), циркон (0,2; 0,4 и 0,6 мл/л), эпин-экстра (0,05; 0,1 и 0,2 мл/л) и их смесей с целью улучшения морфологических показателей, таких как длина и ширина грозди, количество ягод в грозди и семян в одной ягоде, длина и ширина крупной и горошащейся ягоды винограда сортов столового направления Восторг и Талисман в условиях Приднестровского региона. Установлена зависимость эффективности применения регуляторов роста от срока обработки растений винограда в период вегетации. Результаты исследований показывают, что в условиях Приднестровского региона у изучаемых сортов винограда столового направления Восторг и Талисман при применении регуляторов роста гиббереллин, мицефит, циркон, эпин-экстра и их смесей в испытуемых концентрациях наблюдается изменение количества ягод в грозди и семян в одной ягоде. Также отмечены достоверные изменения морфометрических показателей грозди, крупных и горошащихся ягод.The article presents the results of field experiments with the aim to investigate the use of plant growth regulators gibberellin (100 mg/l), mycephitis (10 and 100 mg/l), zircon (0.2; 0.4 and 0.6 ml/l), epin-extra (0.05; 0.1 and 0.2 ml/l) and their mixtures for improvement of morphological parameters such as length and width of the bunch, the number of berries in the bunch and the number of seeds in one berry as well as length and width of large and shot (‘chicken’) berries in table grape varieties ‘Vostorg’ and ‘Talisman’ in the Transdniestria region. The effectiveness of the use of growth regulators was established depending on the period of treatment of grape plants during the growing season. The research results show that, under the conditions of the Transdniestria region, the ‘Vostorg’ and ‘Talisman’ varieties undergo changes in the number of berries in the bunch and in the number of seeds in one berry following application of growth regulators gibberellin, mycephitis, zircon, epin-extra at the study concentrations and in mixtures. Significant changes in morphometric parameters of the bunch as well as of large and ‘chicken’ berries were also noted.

scholarly journals THE EFFECT OF ORGANIC FERTILIZERS AND BIOPREPARATION FLAVOBACTERIN ON POTATO YIELD AND SOIL FERTILITY

2019 ◽  
Vol 48 (6) ◽  
pp. 30-36
Author(s):  
A. I. Stepanov ◽  
A. Ya. Fyodorov ◽  
F. V. Nikolaeva ◽  
D. V. Borisova
Keyword(s):  
Biological Activity ◽  
Soil Fertility ◽  
Field Experiments ◽  
Growing Season ◽  
Organic Fertilizers ◽  
Combined Application ◽  
Biological Preparation ◽  
Permafrost Soils ◽  
The Republic ◽  
Different Doses

The paper presents the results of research into complex effect of organic fertilizers (decomposed cattle manure) in different doses with the biological preparation Flavobacterin on agrochemical parameters and biological activity of permafrost soils in the cultivation of the recognized potato variety Varmas. Field experiments were carried out in 2016–2018 on permafrost chernozem-meadow light-loamy saline soils of the Central Yakut lowland of the Republic of Sakha (Yakutia). The yield of potatoes increased with the application of manure in the dose of 60 t/ha and biological preparation Flavobacterin by 61.4%, control (without fertilizers) – 9.7 t/ha. In the variant: manure 40 t/ha + biopreparation Flavobacterin, the yield amounted to 13.0 t/ha; when treating with the biological preparation – 10.7 t/ha. The use of organic fertilizers in different doses in all studied variants increased the content of phosphorus, potassium and total nitrogen in the soil compared to the control. Combined application of organic fertilizers and biological preparation Flavobacterin increased the biological activity of permafrost soils by 2.9–4.7 times. The intensity of the biological activity of permafrost soils in all years of research was observed during the growing season of crops. The number of soil microorganisms reached its maximum in July and decreased at the end of the growing season (early September), due to the peculiarities of the hydrothermal regime of the soil under study. To preserve soil fertility, it is recommended to use organic fertilizers in combination with the biological preparation based on agrochemical parameters of permafrost soils.

scholarly journals Comparison of long-term changes in size and longevity of bee colonies in mid-west Japan and Maui with and without exposure to pesticide, cold winters, and mites

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9505
Author(s):  
Toshiro Yamada ◽  
Kazuko Yamada
Keyword(s):  
Seasonal Changes ◽  
Field Experiments ◽  
Point Of View ◽  
The Other ◽  
Extended Longevity ◽  
Neonicotinoid Pesticides ◽  
And Control ◽  
Bee Colonies ◽  
Term Field

Four long-term field experiments in mid-west Japan (Shika) made it clear that extinction of colonies exposed to neonicotinoid was much higher than for colonies exposed to organophosphates. The incidence of hive death for of organophosphate-exposed and control (pesticide-free) colonies was similar. We conducted a field experiment in Maui for 271 days using the same pesticides (dinotefuran: 0.2 ppm, clothianidin: 0.08 ppm, fenitrothion: 1 ppm) as used in Shika with the honeybee, Apis mellifera, colonies without mites. Numbers of adult bees, capped brood, mites and other hive parameters were accurately counted on photographs of combs and on the inside of the hives. All six neonicotinoid (dinotefuran & clothianidin)-exposed colonies failed during the experiment. One of three organophosphate (fenitrothion)-exposed colonies and one of the three control colonies also failed. The findings from Maui, where colonies displayed no mites, provides evidence from Shika, with mites, that neonicotinoids are more hazardous to honeybee colonies than organophosphates. The apparent longevity of honeybee colonies on Maui was estimated by numbers of adult bees and capped brood using a mathematical model previously proposed. Seasonal changes in longevity on Maui differ greatly from changes at Shika, the latter showing distinct seasonal variation. Longevity on Maui remains nearly constant throughout the year with wide variations. At Shika, it increases drastically in winter, by six- to ten fold more than the other seasons. Differences seem to depend on the existence of cold winters and the length of flowering seasons. In a perpetually hospitable environment, small changes in conditions can be sensitively reflected in apparent longevity. Examining wide variations in apparent longevity that are seemingly incoherent, we recognized several differences in apparent longevity between neonicotinoid-exposed and organophosphate-exposed colonies: The colony that failed in after organophosphate-exposure colony group exhibited the longest apparent longevity and the fewest number of newly capped brood, as also was the case in control colonies. Extended longevity when few brood are newly produced is reasonable to maintain the colony from a physiological point of view. Extension of apparent longevity is not seen in neonicotinoid-exposed colonies when the number of newly capped brood is fewer. This finding suggests that neonicotinoid pesticides may inhibit normal apian physiology.

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