Wyniki wyszukiwania - AGRO

1

Effect of cultivars on leaf nutrient content in hydroponically grown tomato

100%

Pokluda R., Petrikova K.

Vegetable Crops Research Bulletin

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2001

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tom 55

2

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Nutrient uptake efficiency of five pistachio (Pistacia vera L.) varieties

88%

Aznarte-Mellado C., Sola-Campoy P. J., Robles F., Villasenor J. G., Rejon C. R., de la Herran R., Navajas-Perez R.

Journal of Elementology

|

2016

|

tom 21

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nr 1

Pistacia vera L., whose edible fruit is the pistachio, is an economically important crop. It is cultivated worldwide and over 50 different varieties have been described attending to morphological and phenological characteristics. The selection of a suitable cultivar may affect the profitability of the orchards, and thus requires careful consideration for any given region. The type and concentration of nutrients taken up by the plant affect its development and eventually the quality and quantity of the fruits. It is a matter of discussion whether all varieties have the same capacity to absorb nutrients. In order to clarify this aspect, in this study the efficiency of nutrient uptake has been assessed for five pistachio varieties: three males (M38, G1, and Mateur), and two females (Batoury, and Joley), by measuring the concentration of 30 chemical elements in leaves by Inductively Coupled Plasma (ICP) and C/N micro-elemental analyses. Data were subjected to a non-parametric Friedman test, using a series of Wilcoxon Rank Sum test with a Bonferroni correction as post hocs. Our findings demonstrate that all these varieties have an equal uptake capacity for Al, Cr, Cu, K, Li, Mn, Ni, Pb, S, Sr, Ti, Tl, Zn, N, B, Fe, Mg, Na, and V. No differences related to the gender of the plants were detected. Only Mateur exhibited significantly higher levels of Ca and lower levels of C. Stock plants from an experimental plot were used as material. These plants are not used for productive purposes, and flowering and fruiting are partially restricted by removing potential nutrient-demanding structures. These findings support the contention that the presence/absence of such organs has more influence on the nutrient uptake than does the variety itself.

3

Evaluation of soil reaction and content of assimilable nutrients in soils of South-Eastern Poland

88%

Tkaczyk P., Bednarek W., Dresler S., Krzyszczak J.

Acta Agrophysica

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2016

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tom 23

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nr 2

An environmental study was performed in the years 2008-2012 to evaluate actual soil reaction (pHKCl) and content of nutrients in soils of south-eastern Poland and also to determine the relationship of those nutrients to soil properties. To carry out those studies, 15493 soil samples were chemically analysed in certified laboratory of Regional Agrochemical Station in Lublin. In all soil samples particle size distribution was determined using the Laser Diffraction Method, soil reaction – in 1 mol KCl·dmˉ³, phosphorus and potassium using Egner-Riehm method, and magnesium was assayed using Atomic Absorption Spectrometry method. The reaction of non-calcareous soils of south-eastern Poland was acidic (very light soils) or slightly acidic (light, medium and heavy soils), and for calcareous soils the it was alkaline. The chemical analysis revealed that supply of phosphorus was moderate (light and medium non-calcareous and very light calcareous soils), high (very light and heavy non-calcareous soils) and very high (light, medium and heavy calcareous soils), and it depended significantly on the soil reaction. The supply of potassium in non-calcareous soils was moderate and depended significantly on agronomic category and soil reaction. As for magnesium, the supply of this nutrient in calcareous and non-calcareous soils depended on agronomic category and soil reaction.

4

The contents of some nutrients in the aerial parts of maize and their potential role in tolerance to stress

75%

Baczek-Kwinta R., Antonkiewicz J., Maslak J., Oleksiewicz A.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

5

Does inflow of water river shape the nutrient content of lake sediments?

75%

Potasznik A., Szymczyk S.

Journal of Elementology

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2016

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tom 21

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nr 2

This study evaluated the influence of the Symsarna River on the spatial distribution of organic matter, Kjeldahl nitrogen (NK) and total phosphorus in the surface layer of bottom sediments. The analyzed site was Symsar Lake in the Olsztyn Lakeland (north-eastern Poland) and the inflows. The results of this study indicate that the lake’s morphology and inflowing streams were largely responsible for the variations in the nutrient content of bottom deposits in the flow-through Symsar Lake. The NK content was significantly correlated with the lake’s depth, whereas TOC levels were determined mainly by the location in the lake. The surface layers of bottom sediments in Lake Symsar were characterized by an average organic matter content of 171.2 g kg-1 and near-neutral pH (6.78-7.77). The average contents of components in the analyzed sediments were determined at 62.01 gTOC kg-1 d.m., 6.08 gNK kg-1d.m. and 2.18 gTP kg-1d.m. Converted to fresh mass, the above contents expressed per square meter of the lake’s sediment reached 3.95 kgTOC m-2 f.m., 0.42 kgNK m-2 f.m. and 0.18 kgTP m-2 f.m. In turn, the average concentrations of components in sediments from the streams, likewise per square meter, equalled 12.4 gTOC m-2 d.m., 0.93 gNK m-2 d.m. and 0.9 gTP m-2 d.m. The highest contents of the analyzed components were observed in bottom sediments near the outflow of a river from the lake and in the lake’s region intersected by the river. The Symsarna River was responsible for the transport of and variability in the deposition of mineral fractions, and for the nutrient accumulation in the surface layer of bottom sediments. A flow-through water body in a river-lake system can contribute to retention in periods when it exerts a negative impact on the trophic status of a lake. From a broader, ecological viewpoint, it can inhibit the transport of pollutants outside the catchment.

6

Zawartosc skladnikow w nawozach dolistnych

75%

Cwynar A.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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1996

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nr 05

9-10

7

Review of the studies on nutrition in Polish preschool children. Part 1. Preschool menus

75%

Merkiel S., Chalcarz W.

Roczniki Państwowego Zakładu Higieny

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2016

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tom 67

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nr 3

The last review of the literature on nutrition in Polish children covered the years 1980-1995. From that time living conditions in Poland have changed due to political and economic changes. Attitudes toward eating and healthy life-style have also changed. Therefore, it is necessary to summarise current knowledge about what Polish preschool children eat. The aim of this article was to present the areas of research on nutrition in Polish preschool children based on the review of the literature, and to present and summarise the results of the studies on the assessment of preschool menus. The review of the literature showed two main areas of research on nutrition in Polish preschool children: the assessment of meals planned and served to children at preschools, and the assessment of food behaviour and daily food and nutrient intake in preschool children. Studies on energy and nutrient content of preschool menus should be carried out regularly in order to improve nutrition of children during their stay at preschool and vegetarian menus should be studied to fill the gap in the literature. The methodology of assessing preschool meals should be the same in order to provide the possibility to compare both the results and the conclusions. Preschool menus should be adjusted to the needs of 3-year-old children and 4-6-year-old children separately. The nation-wide education programme for preschool staff should be worked out and implemented in order to teach the preschool staff about the current nutrition recommendations for children, as well as the nutritional needs of 3-year-old children and 4-6-year-old children.

8

Effect of plant growth promoting rhizobacteria on growth, nutrient, organic acid, amino acid and hormone content of cauliflower (Brassica oleracea L. var. botrytis) transplants

63%

Ekinci M., Turan M., Yildirim E., Gunes A., Kotan R., Dursun A.

Acta Scientiarum Polonorum. Hortorum Cultus

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2014

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tom 13

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nr 6

This study was conducted to determine the effect of different plant growth promoting rhizobacteria (PGPR) strains on growth and quality of cauliflower transplants under greenhouse conditions. The strains of Bacillus megaterium TV-3D, B. megaterium TV-91C, Pantoea agglomerans RK-92, B. subtilis TV-17C, B. megaterium TV-87A, B. megaterium KBA-10 were used in this study. The results of this study showed that different bacterial inoculations increased plant growth parameters such as fresh shoot weight, dry shoot weight, root diameter, root length, fresh root weight, dry root weight, plant height, stem diameter, leaf area and chlorophyll contents of cauliflower transplant respectively. Except for abscisic acid (ABA), the values of gibberellic acid (GA), salicylic acid (SA), indole acetic acid (IAA) was increased by ratio of 23.64, 89.54 and 25.63%, respectively in compared to the control by application of B. megaterium KBA-10 and P. agglomerans RK-92. The amount of organic acids with B. subtilis TV-17C PGPR applications have increased at a ranging ratio from 9.63 to 186.02%. Also, PGPR inoculations increased the macro and micro nutrient content of cauliflower transplants. As a result, the use of bacteria treatments may provide a means of improving transplant growth and quality in cauliflower.

9

Food and nutrient goals for Polish population, suggested for the year 2000

63%

Sekula W., Szostak W. B., Niedzialek Z.

Żywienie Człowieka i Metabolizm

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1991

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tom 18

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nr 3

Food and nutrient goals for Polish population for the year 2000 formulated by the research workers from the National Food and Nutrition Institute and consulted with other nutrition specialists are presented. The concepts used in their preparation are described and the description of former Polish experiences in the formulation and implementations prospective food and nutrient patterns is included as well. The food goals for the year 2000 assume significant decrease of the consumption of visible fats and sugar. Taking into account the feasibility of the recommendations, very moderate increase in meat and milk consumption was suggested and more considerable one in case of fish. According to recommended food pattern the importance of fruit in the diet should grow very significantly. Implementation of the specified food goals will ensure the decrease of the energy content of the diet in relation to its current level and the reduction in the proportion of calories derived from fat.

10

Variations of leaf economic spectrum of eight dominant plant species in two successional stages under contrasting nutrient supply

63%

Mao W., Li Y.-L., Zhao X.-Y., Zhang T.-H., Liu X.-P.

Polish Journal of Ecology

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2016

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tom 64

|

nr 1

Leaf functional traits are indicators of both plant community and ecosystem responses to environmental factors and can thus increase our capacity to understand ecosystem processes and community assembly due to climate change. The variation in leaf functional traits between succession stages in Horqin Sandy Land is caused by soil nutrient content and by intrinsic biological characteristic of species, but the effects are different. Leaf economic spectra were assessed for seven leaf traits of eight species from early and advanced stages of succession. Species from early succession stages are Agriophyllum squarrosum (L.) Moq., Corispermum macrocarpum Bge., Setaria viridis (L.) Beauv. and Pennisetum centrasiaticum Tzvel., and species from advanced successional stages are Chenopodium acuminatum Willd., Chloris virgate Swartz, Digitaria sanguinalis (L.) Scop. and Leymus secalinus (Georgi) Tzvel. All these species were grown in a greenhouse experiment under two contrasting nutrient supplies including high nutrient level (N , with 20 g of nutrient addition) and low nutrient level (N-, with no added nutrients). As expected, the resource uptake strategies of the species were affected by soil fertilization addition. Leaf nitrogen content (LNC), leaf phosphorus content (LPC), and photosynthetic capacity per unit leaf area (Aarea) significantly increased at high nutrient level but LPC is more dramatically changed than others leaf traits. Leaf life span (LLS) and specific leaf area (SLA) did not show similar tendency with succession stage. At the same nutrient level, LES still shows different pattern between the early and the advanced succession stages. Species from early succession stages have higher LPC and Aarea, compared to species from advanced stages. Species from early succession stage also tend to have higher SLA and higher LNC than at the advanced succession stage. The LLS did not show any clear changes with succession process. These results provide evidence that LES shift along the succession process is mainly caused by intrinsic biological characteristic of species.

11

Content of some nutrients in Scots pine, silver birch and Norway maple in an urbanized environment

63%

Modrzewska B., Kosiorek M., Wyszkowski M.

Journal of Elementology

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2016

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tom 21

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nr 1

In the late 18th and early 19th c., a drastic reduction in the area of forests due to their excessive exploitation occurred in Europe, which gave rise to the birth of afforestation efforts. The chemical composition of plants, including trees, depends on the many biotic and abiotic environmental factors. The aim of this study was to determine the content of some nutrients in needles and bark of Scots pine (Pinus sylvestris L.), leaves and bark of silver birch (Betula pendula) and Norway maple (Acer platanoides L.), depending on their location. The content of phosphorus, potassium, sodium, calcium and magnesium depended on a plant species, plant organ and the location of sample collection. The leaves of silver birch, compared to its bark, contained ten-fold more potassium and six-fold more phosphorus and magnesium. The content of phosphorus was the highest in silver birch leaves in the center of Olsztyn. The highest potassium content was observed in silver birch leaves and Norway maple bark in the center of Olsztyn. The calcium content was the highest in the leaves and bark of maple trees growing near State Road 51 and in the leaves of this species in the city center. The highest sodium content was detected in the leaves and bark of most tree species growing along State Road 51 and in the center of Olsztyn.

12

Comparison of nutrient content in fruit of commercial cultivars of eggplant (Solanum melongena L.)

63%

Ayaz F. A., Colak N., Topuz M., Tarkowski P., Jaworek P., Seiler G., Inceer H.

Polish Journal of Food and Nutrition Sciences

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2015

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tom 65

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nr 4

Eggplant (Solanum melongena L.) is one of the most popular common major vegetable crops worldwide. This study evaluated the nutritional content of seven commercial eggplant fruits in terms of fatty acid, mineral, sugar, organic acid, amino acid and polyamine contents. The most abundant fatty acid was linoleic acid (range, 39.14-53.81%, ave. 45%), and the most abundant mineral was K (range, 1556.2-3171.6 mg/kg fw, ave. 2331.9). The major organic acid was malic acid (range, 129.87-387.01 mg/g fw, ave. 157.49), and the major sugar was fructose (range, 1242.811379.77 mg/100 g fw, ave. 1350.88). The major polyamine was putrescine (11.54 and 25.70 nmol/g fw, ave. 17.86), and the major amino acid was glutamine (148.4 and 298.75 mg/100 g fw, ave. 219.74). Overall, taking into account the export potential of eggplants, these results may contribute to further studies aiming to improve other nutrient-rich varieties of eggplant in breeding programs.

13

Snail eggs as a raw material for the production of a caviar substitute

63%

Mackowiak-Dryka M., Szkucik K., Pyz-Lukasik R.

Journal of Veterinary Research

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2020

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tom 64

|

nr 4

14

Co fermentation of sugar by-products with typical agricultural substrates

63%

Kryvoruchko V., Amon T., Amon B., Dubrovin V., Melnychuk M.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2014

|

tom 16

|

nr 3

15

The nutrient content in soybean seeds (Glycine max L. Merr.) after application of exogenous growth regulators

63%

Nowak A., Wrobel J.

Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica

|

2015

|

tom 36

16

Impact of zero tillage system on the nutrient content of grain and vegetative parts of cereals

63%

Stanislawska-Glubiak E., Korzeniowska J.

Polish Journal of Agronomy

|

2011

|

nr 04

17

Cobalt effects on root nodulation, nutrients content and yield of faba bean (Vicia faba L.)

63%

Gad N., Abdelhamid M., Moez M. A. E.

Acta Physiologiae Plantarum

|

2007

|

tom 29

|

nr 1 Suppl.

18

Fertilisation with regard to subsoil

63%

Bujnovsky R.

Nawozy i Nawożenie

|

2000

|

tom 02

|

nr 3b

19

Czas pomyslec o nawozeniu

63%

Kurzynska B.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

|

2004

|

nr 03

12-13

20

Starch and nutrient contents are key for mosses adapting to different succession stages along a receding glacier

63%

Sun S.-Q., He G., Wu Y.-H., Zhou J., Yu D.

Polish Journal of Ecology

|

2013

|

tom 61

|

nr 2

Mosses are the pioneer and the first green land plants developed during the evolutionary process, they play an important role in the development of soil, biogeochemical cycling and facilitating plant colonization. Although species richness, composition, diversity and cover of moss communities vary, they grow well almost in all forests. Why mosses can grow in different conditions? What are the adaptive strategies of mosses in different forests along primary succession sequences? It is not still completely clear. In order to answer these questions, nutrient and carbohydrate accumulation in mosses were tested along the primary succession following deglaciation of Hailuogou glacier, Gongga Mountain, China. Nitrogen (N), phosphorus (P), potassium (K) content, total organic carbon (TOC), soluble sugar and starch accumulated in the dominant moss species were determined and compared. TOC increased insignificantly with forest age. N, P, K contents in mosses were significantly higher in forests with dense shrubs, where N content was seperately 1.69% in A. hookeri and 1.35% in P. schreberi in 30 yr aged forest, P content in 30 yr and 52 yr aged forest was seperately 0.022% and 0.020% in A. hookeri and 0.020% and 0.017% in P. schreberi, and K content in 30 yr and 52 yr aged forest was seperately 0.570% and 0.553% in A. hookeri and 0.490% and 0.493% in P. schreberi. Soluble sugar was higher in the early stage of succession, but the opposite was observed for starch and nonstructure carbohydrate content, which was lower in early successional stage. Mosses adopted different adaptive strategies in different aged forests along receding glacier, in which starch and N, P, K contents were key for adaptiation. That is, mosses accumulated much more starch in the severe environment of early succession stage. In more favourable environment, N, P, K was found to be accumulated for plant growth.

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