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Thermal growing season in Poland calculated by two different methods

100%

Kepinska-Kasprzak M., Mager P.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2015

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tom 47

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nr 3

Methods of identifying dates of passing determined threshold value are of signifi cant importance in the study of thermal growing seasons. The difficulty to determine dates of beginning and end of growing season in a given year stems from the fact that daily mean air temperature changes irregularly on a day-to-day basis often crossing the threshold value (i.e. 5°C) multiple times. The most frequently used method to identify dates of threshold value crossing is the mathematical or graphical method proposed by Gumiński in 1950 which based on monthly mean air temperature values. In the 1970s, Huculak and Makowiec presented a method using daily mean values of air temperature. It is assumed that both methods give comparative results although calculations of daily mean air temperature render more accurate results. This paper presents the comparison of these two methods. Air temperatures measurements from 1966–2005 taken at 38 weather stations located in various physiographic conditions in Poland were used.

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Effect of differentiated fertilization with sulphur on health status of winter oilseed rape

86%

Lemanczyk G., Panka D., Lenc L., Jankowski K.

Ochrona Środowiska i Zasobów Naturalnych

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2007

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nr 33

57-63

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Effects of soil conditioners on lawn grass characteristics throughout the growing season

86%

Jankowski K., Sosnowski J., Malinowska E., Wisniewska-Kadzajan B., Matsyura A. V., Zajac M., Ostaszewska U.

Acta Scientiarum Polonorum. Agricultura

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2020

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tom 19

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nr 4

4

Changes in macroelement content in Nuphar lutea [L.] Sibith. and Sm. during the growing season

86%

Tomaszewicz H., Ciecierska H.

Acta Societatis Botanicorum Poloniae

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2009

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tom 78

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nr 2

151-165

This study presents the results of monitoring studies carried out to determine the chemical composition of Nuphar lutea in two phytocoenoses of Nupharo-Nymphaeetum albae Tomasz. 1977 occurring in two lakes of different trophic types (eutrophic Lake Łaśmiady and oligo-humotrophic Lake Pływające Wyspy). The leaves (collected starting in May), rhizomes and roots of Nuphar lutea as well as water and sediment samples were collected from March to November in the above phytocoenoses (for 3 years in Lake Pływające Wyspy and for 4 years in Lake Łaśmiady). The samples were analysed for several parameters including: phosphate, nitrate, total nitrogen, potassium, sodium, calcium, total iron, sulphate and silica dissolved. In addition the manganese, cadmium, zinc and lead contents were determined in the leaves, rhizomes and roots of the plants collected in July (at the height of the growing season). It was found that the differences in the chemical composition of water and sediments between the lakes studied were more pronounced than in the case of leaves, rhizomes and roots of Nuphar lutea.

5

The soil drying along the increase of warming masks the relation between temperature and soil respiration in an Alpine meadow of Northern Tibet

86%

Shen Z.-X., Wang J.-W., Sun W., Li S.-W., Fu G., Zhang X.-Z., Zhang Y.-J., Yu C.-Q., Shi P.-L., He Y.-T.

Polish Journal of Ecology

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2016

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tom 64

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nr 1

A warming experiment with two magnitudes was performed in an alpine meadow of Northern Tibet since late June, 2013. Open top chambers (OTCs) with two top diameters (0.60 m and 1.00 m) were used to increase soil temperature. Soil respiration (Rs) was measured during the growing season in 2013–2014. The OTCs with top diameters of 1.00 m and 0.60 m increased soil temperature by 1.30 and 3.10oC, respectively, during the whole study period, but decreased soil moisture by 0.02 and 0.05 m³ m⁻³, respectively. However, the two patters of OTCs did not affect Rs. These results implied that a higher warming did not result in a higher Rs but a greater soil drying. Therefore, a higher warming may not cause a higher soil respiration, which was most likely due to the fact that a higher warming may result in a greater soil drying.

6

Forest ecosystem as a source of CO2 during growing season: relation to weather conditions

86%

Taufarova K., Havrankova K., Dvorska A., Pavelka M., Urbaniak M., Janous D.

International Agrophysics

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2014

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tom 28

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nr 2

Net ecosystem production reflects the potential of the ecosystem to sequestrate atmospheric CO2. Daily net ecosystem production of a mountain Norway spruce forest of the temperate zone (Czech Republic) was determined using the eddy covariance method. Growing season days when the ecosystem was a CO2 source were examined with respect to current weather conditions. During the 2005, 2006, and 2007 growing seasons, there were 44, 65, and 39 days, respectively, when the forest was a net CO2 source. The current weather conditions associated with CO2 release during the growing seasons were: cool and overcast conditions at the beginning or end of the growing seasons characterized by a 3-year mean net ecosystem production of -7.2 kg C ha-1 day-1; overcast or/and rainy days (-23.1 kg C ha-1 day-1); partly cloudy and hot days (-11.8 kg C ha-1 day-1); and overcast and hot days (-13.5 kg C ha-1 day-1). CO2 release was the highest during the overcast or/and rainy conditions (84%, average from all years), which had the greatest impact during the major production periods. As forests are important CO2 sinks and more frequent weather extremes are expected due to climate change, it is important to predict future forest carbon balances to study the influence of heightened variability in climatic variables.

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The influence of disturbance type on precipitation − use efficiency at functional group and species scales in an arid habitat

72%

Busso C. A., Montenegro O. A., Torres Y. A., Giorgetti H. D., Rodriguez G. D.

Polish Journal of Ecology

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2016

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tom 64

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nr 2

We used long-term datasets (1984–1992) to contrast precipitation-use efficiency estimates between various disturbance kinds at a functional group and/or a species scale. Effects of varying amounts of precipitation and plant cover on PUE were also examined. Field studies were conducted at northeastern, arid Patagonia, Argentina (40°39′49″S, 62°53′6.4″W). Within each management kind, biomass was sampled in 0.5 × 0.5m permanent plots (n = 30) over 9 years after defoliation at 5 cm stubble at the end of each growing season, and it was separated into species. Biomass sampling allowed determination of annual net primary production. Thereafter, species were grouped into each of three functional groups. Precipitation-use efficiency (PUE) was calculated as the total dry matter produced per unit surface area on any given year divided by the total rainfall in that year. Plant cover on 20 out of those 30 plots was determined to study the relationship between plant cover and PUE. The contribution of cool-season perennial grasses to total PUE was higher (P <0.05) than that found for the other two functional groups in all management kinds and years. PUE was similar (P> 0.05) in wet than dry years, and it was greater (P <0.05) or similar (P> 0.05), but not lower, on the more than less competitive perennial grass species in all management kinds. The relationship between plant cover and PUE was positive, linear (P <0.0000) and management-kind dependent.

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Passport data and valorisation data of 33 accessions from the collection of genetic resources of the species Linum usitatissimum L.

72%

Silska G.

Herba Polonica

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2020

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tom 66

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nr 4

9

Usability of Bishop formula in evaluation of malting quality of barley grain

72%

Blazewicz J., Liszewski M., Zembold-Gula A.

Polish Journal of Food and Nutrition Sciences

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2007

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tom 57

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nr 4[A]

37-40

The purpose of the research was to define the influence of cultivar, growing season and grain largeness on its extractivity, which was determined by Bishop’s formula. The experimental material was: barley grain of Rudzik, Brenda and Scarlett cultivars, from growing seasons of 2000-2003, originating from the region of Lower Silesia, taken from raw material supplied to malthouses, as well as grain from 10 cultivars of brewing barley (Class, Blask, Riviera, Lailla, Hanka, Sebastian, Bolina, Philadelphia, Tolar, Stratus), from the growing season of 2005, from Agricultural Experimental Station in Pawłowice In the fractionated barley grain there were determined protein content and thousand grains weight. Malts of Pilzen type were obtained as a result of brewing barley grain malting in laboratory conditions for 6 days. After mashing, there was determined the content of extract in congress worts. On the basis of extract content malt extractivity was calculated. These data were compared with the extractivity of barley grains, determined by Bishop’s formula and differences analyzed statistically. It was stated that the application of Bishop’s formula in the evaluation of the malting usability of brewing barley grain, especially in multi-year analyses, enables predicting the extractivity of Pilzen type malts with high accuracy. Differentiated cultivar-specific traits, changeable weather conditions during growing seasons as well as grains fractionation in terms of their thickness neither impair nor significantly change the effects of predicting the malting usability of brewing barleys with the formula of Bishop.

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The effect of fungicides applied during the growing season on the health status of potato tubers after storage

72%

Cwalina-Ambroziak B., Trojak A.

Polish Journal of Natural Sciences

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2011

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tom 26

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nr 3

In an exact micro-plot experiment, potato plants of three cultivars were sprayed at 10-day intervals with the following fungicides: Sandofan Manco 64 WP, Penncozeb 80 WP and Tanos 50 WG; Tanos 50 WG applied three times; Tanos 50 WG, Penncozeb 80 WP and Tanos 50 WG (control treatment without fungicides). After five-month storage, the incidence of common scab (Streptomyces scabies) was determined on 100 tubers selected randomly of particular treatments, according to a nine-point scale (percentage infection index). The symptoms of late blight (Phytophthora infestans) and dry rot (Fusarium spp.) were evaluated in 5 kg samples for each treatment (percentage of the mass of infected tubers). Fungi were isolated from tubers at the laboratory. The applied fungicidal control insignificantly affected the severity of infection caused by S. scabies only in the last year of the study. Potato tubers from fungicide-treated plants showed weaker symptoms of infections caused by P. infestans and fungi of the genus Fusarium. The abundance of pathogens colonizing potato tubers was lower in fungicide treatments.

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Interannual variation of the growing season maximum normalized difference vegetation index, MNDVI, and its relationship with climatic factors on the Tibetan Plateau

72%

Wang S.-H., Sun W., Li S.-W., Shen Z.-X., Fu G.

Polish Journal of Ecology

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2015

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tom 63

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nr 3

The effects of the growing season climatic factors (i.e., temperature, precipitation, vapor pressure and relative humidity) on the growing season maximum normalized difference vegetation index (MNDVI), which can mirror the aboveground net primary production and the vegetation maximum absorbed ability of photosynthetically active radiation, were examined during the period from 2000 to 2012 on the Tibetan Plateau. The effects of climatic factors on the MNDVI changed with vegetation types, which was probably due to the fact that the changes of climatic factors differed with the type of vegetation. There was a significant increasing trend for the spatially averaged MNDVI of the vegetation area over the entire plateau. Approximately 16 and 3% of the vegetation area demonstrated a significant MNDVI increasing and decreasing trend, respectively. The MNDVI was significantly affected by relative humidity and vapor pressure, but not affected by temperature and precipitation over the entire plateau. Our findings suggested that the environmental humidity played a predominant role in affecting the variation of MNDVI over the entire Tibetan Plateau.

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Modelling biometric traits and straw yield of white mustard (Sinapis alba L.) grown for seeds by the sowing date and meteorological factors

72%

Harasimowicz-Hermann G., Wilczewski E., Kisielewska W.

Acta Scientiarum Polonorum. Agricultura

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2017

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tom 16

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nr 4

13

Climatic factors affecting development and yielding of grapevine in Central Poland

72%

Lisek J.

Journal of Fruit and Ornamental Plant Research

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2008

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tom 16

285-293

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Allometric partitioning theory versus optimal partitioning theory: the adjustment of biomass allocation and internal C-N balance to shading and nitrogen addition in Fritillaria unibracteata (Liliaceae)

72%

Guo H., Xu B., Wu Y., Shi F., Wu C., Wu N.

Polish Journal of Ecology

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2016

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tom 64

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nr 2

Fritillaria unibracteata is a classic perennial alpine herb. In this study, we examined it's responses to shading (SH) and nitrogen addition (NA), as well as its correlation with internal C-N balance to detect how it adjusted to the changes of habitat conditions. Randomized block experiment was carried out in the field in Chuanbeimu Research Station in Songpan County, Sichuan Province, China (32°09′54″N, 103°38′36″E, altitude 3300 m a.s.l.). Two growing seasons after NA and SH, Fritillaria unibracteata's total plant biomass decreased significantly, with the proportion of biomass allocated to aboveground significantly increased. In addition, in this study, under both SH and NA treatments, Fritillaria unibracteata increased its biomass allocation to above-ground, which consisted with optimal partitioning theory. Moreover, Fritillaria unibracteata's biomass allocation was significantly correlated with its internal C-N status, regardless of nitrogen and light condition. We conclude that Fritillaria unibracteata optimizes its biomass allocation between root and shoot by adjusting its internal C-N balance, which would not be changed by the specialized resource storage organ-bulb.

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Biomass production of different grassland communities under artificially modified amount of rainfall

72%

Holub P., Tuma I., Zahora J., Fiala K.

Polish Journal of Ecology

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2015

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tom 63

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nr 3

Global climate change is predicted to alter growing season rainfall patterns, potentially reducing total amounts of growing season precipitation and redistributing rainfall into fewer but larger individual events. Such changes may affect numerous soil, plant, and ecosystem properties in grasslands and ultimately impact their productivity and biological diversity. A five-year field study with regulated amount of precipitation was executed in different types of temperate grasslands (dry Festuca, wet Cirsium and Nardus grasslands) in three different regions (in lowland, highland and mountain, respectively) in the Czech Republic. Three simulated rainfall treatments were applied: reduced rainfall by 50% (dry), increased rainfall by 50% (wet), and natural rainfall of the current growing season (ambient). The addition of supplemental resources of water exhibited slightly positive relation with the above-ground production (AP), but statistically significant only in the lowland grassland. At all grasslands, both root biomass (RB) and total below-ground biomass (TBB) were significantly higher in wet compared to dry treatments. Significantly increased values of the TBB/AP ratios occurred only in the highland grassland due to enhanced rainfall. The opposite relations were found in lowland grassland where the TBB/AP ratio decreased in response to enhanced rainfall, though not significantly. In the mountain grassland, values of the TBB/AP ratios have shown less variability. The highland wet Cirsium grassland was more sensitive to altered rainfall regimes forming rather lower proportion of below-ground plant production.

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Impact of season of harvest on potential nutritive value, methane production and condensed tannins content of Calobota saharae in M´sila, North-Central Algeria

72%

Medjekal S., Ghadbane M., Bousseboua H.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2015

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tom 18

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nr 2

17

The effect of growing mixtures of spring barley cultivars on pest occurrence and yields

72%

Tratwal A., Roik K., Bocianowski J.

Polish Journal of Entomology

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2014

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tom 83

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nr 4

18

Precipitation deficiencies and excesses during the growing season of winter rape and winter wheat in Poland (1971-2010)

72%

Skowera B., Kopcinska J., Kolodziejczyk M., Kopec B.

Acta Agrophysica

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2015

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tom 22

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nr 2

This paper presents an analysis of the deficiencies and excesses of precipitation occurring during the growing season of winter rape and winter wheat in the context of rising air tem-peratures in Poland in 1971-2010. The greatest frequency of precipitation deficiencies in winter wheat production in April and July was registered in the north-eastern region of Poland (Olsztyn), in May in Poznan region and in June in Lublin region. Analysis of the levels of precipitation deficiencies and excesses during the spring-summer period of winter wheat and winter rape vegetation in 1971-2010 did not reveal significant trends of changes despite their spatial and time diversification. Total precipi-tation deficiencies during April-June period for winter rape was the highest in Poznan region (62 mm) and the lowest in Olsztyn region (39 mm). Winter wheat highest precipitation deficiency was observed in Poznan region (59 mm), while the lowest in Lublin (34 mm), and their amounts were lower compar-ing to winter rape. In winter rape production, precipitation excesses were less frequently observed than precipitation deficiencies. The greatest frequency of precipitation excesses for winter wheat was regis-tered in June in Olsztyn region. The greatest frequency of precipitation excesses in winter wheat pro-duction in June and July was registered in the regions of Olsztyn and Koszalin; in April and June in Lublin. Precipitation excess totals during the April-June period for winter rape were the highest in Lublin region (45 mm) and the lowest in Opole region (22 mm). Winter wheat excesses of precipitation during April-July period were bigger compared to winter rape; the greatest amounts were observed in Koszalin region (72mm), while the lowest in Lublin region (43 mm).

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Lura - indiogenous approach to biodiversity conservation by temporary community confinement of Mithuns (Bos frontalis) during growing season

72%

Jini D., Bhagawati K., Singh R., Bhagawati R., Alone R. A., Ngachan S. V.

International Letters of Natural Sciences

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2015

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tom 44

The extraordinary knowledge of indigenous people about their immediate environment and natural resource base can be a great asset for conservation of biodiversity. The current study aims to investigate an indigenous method of grazing management through temporary confinement of Mithun (Bos frontalis) of whole village community in a well selected area in the forest during the cropping and growing season. The whole system is called Lura and practiced by Galo tribes of Eastern Himalayan region of India. Every year Lura management committee is formed that selects a new site based on number of Mithuns, forage availability, time period and several other key criteria without affecting flora-fauna diversity and rare medicinal plants. The practice checks continuous, free, random and selective grazing by Mithuns. It prevent continuous disturbance of soil surface due to treading, during growing and rainy seasons that avoid soil erosion and compaction, and facilitate seedling germination and the invasion by plants. Change of site, provide resting period to the forages in the previous Lura site especially during growth stage that allow them to renew and regenerate appreciably within 1-2 months. It also saves resources and time for construction of fencing in each Jhum and other agricultural site of each farmer. The confinement offers easy monitoring, protection and regular health assessment of the livestock. Thus, it is a multifaceted indigenous practice that ensures grazing management, biodiversity conservation, protection of standing agricultural crops and animal health management

20

Influence of leaf area on atmospheric input of elements to the ecosystems of the Kampinos National Park [Central Poland]

72%

Kram K. J.

Polish Journal of Ecology

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2001

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tom 49

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nr 4

Ograniczanie wyników

Thermal growing season in Poland calculated by two different methods

Effect of differentiated fertilization with sulphur on health status of winter oilseed rape

Effects of soil conditioners on lawn grass characteristics throughout the growing season

Changes in macroelement content in Nuphar lutea [L.] Sibith. and Sm. during the growing season

The soil drying along the increase of warming masks the relation between temperature and soil respiration in an Alpine meadow of Northern Tibet

Forest ecosystem as a source of CO2 during growing season: relation to weather conditions

The influence of disturbance type on precipitation − use efficiency at functional group and species scales in an arid habitat

Passport data and valorisation data of 33 accessions from the collection of genetic resources of the species Linum usitatissimum L.

Usability of Bishop formula in evaluation of malting quality of barley grain