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1

The effects of some agronomical factors on the yield of spring oilseed rape

100%
Jankowski K., Budzynski W.
Natural Sciences
|
2001
|
tom 09
2

Effect of sowing date on quantity and quality of yield of chervil [Anthriscus cerefolium L. [Hoffm.] ssp. sativum] grown for a bunch harvest

84%
Jadczak D., Grzeszczuk M.
Herba Polonica
|
2009
|
tom 55
|
nr 3
292-297
The aim of the studies carried out in 2004-2006 was the estimation of quantity and quality of chervil yield according to the sowing date: 10 April, 25 April and 10 May. On the base of obtained results it was said that the sowing date had a significant influence on the chervil yield, which was higher when the earliest date of sowing was used. However, there was no significant effect of sowing dates on the leaf blade mass and leafstalk mass in the mass of a single bunch. Participation of leaf blades in a bunch mass amounted from 63.4% for the latest sowing.date to 55.5% when seeds were sown on 10 April. Moreover, the chervil yield was characterized by a quite high mineral compounds content, especially iron, man­ganese, zinc and copper. However, significant differences were found only in the content of calcium. The highest amount of this macroelement was noted in the second year of the experiment.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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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

84%
Harasimowicz-Hermann G., Wilczewski E., Kisielewska W.
Acta Scientiarum Polonorum. Agricultura
|
2017
|
tom 16
|
nr 4
4

Sowing date as a factor determining French bean yield for processing

84%
Labuda H., Brodaczewska A.
Folia Horticulturae
|
2011
|
tom 23
|
nr 1
5
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Content available

Management of productivity of sunflower plants depending on terms of sowing and density of standing in arid conditions of the Right-bank Steppe of Ukraine

84%
Pinkovskyi H., Tanchyk S.
Agronomy Science
|
2021
|
tom 76
|
nr 1
6

Effect of sowing date and application of foliar fertilizers on the yield and chemical composition of rue [Ruta graveolens L.] herb

84%
El-Sherbeny S. E., Khalil M. Y., Hussein M. S., Aly M. S.
Herba Polonica
|
2008
|
tom 54
|
nr 1
The present investigation was conducted during two successive seasons of 2004/2005 and 2005/2006 in order to study the effect of two different sowing times and two macro- and microfoliar fertilizers on yield and chemical composition of Ruta graveolens plants. Delay in sowing from 20 October to 20 November resulted in significant promotion for herb dry weight (g/m2) as well as percentage and yield of essential oil of herb. In contrast, the accumulation of rutin and coumarin contents was higher at the first sowing time than the second one. The main constituent of essential oil in herb was identified as 2-undecanone. It represented 60.74% of identified herb essential oil at first sowing date and decreased to 55.88% at second date. Both foliar fertilizers, Crestalon and Leaf drip, promoted herb dry weight. Leaf drip was more favorable to improve these criteria than Crestalon. In general, the highest content of essential oil, rutin and coumarin were recorded with application of 1000 or 2000 ppm of Leaf drip. The maximum yield of herb and essential oil resulted in plants of the second date of sowing and fertilized with Leaf drip at 2000 ppm.
7
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The influence of environmental factors on flowering of French bean [Phaseolus vulgaris L.]

84%
Labuda H., Brodaczewska A.
Acta Agrobotanica
|
2007
|
tom 60
|
nr 2
Observations of major development stages and flowering of four French bean (Phaseolus vulgaris L.) cultivars cultivated for green pods from six sowing dates (since mid of May till end of June) at weekly intervals were performed in 2003-2005. The study included the determination of the number of inflorescences per plant, number of flowers in inflorescence, length of inflorescence axis, and number of total and marketable pods per plant. French bean sown in the mid of May till the end of June showed the greatest variability with respect to the flowering start date and flowering period length as well as the number of pods set on a plant. French bean plants sown on different dates produced a similar number of inflorescences and flowers per bunch; 61.6-74.6 flowers per plant, on average. Weather conditions in July and August had the greatest influence on the flowering pattern and bean pod setting.
8

Response of open-pollination and hybrid winter rye grown in good wheat complex soil to some agronomic factors

84%
Budzynski W., Szemplinski W., Jankowski K.
Polish Journal of Natural Sciences
|
2003
|
tom 14
9
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The effect of selected agricultural factors on the yielding of spaghetti squash (Cucurbita pepo L.)

67%
Wadas W., Kalinowski K.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2010
|
tom 09
|
nr 2
Spaghetti squash is an interesting novelty in Poland. Popularization of spaghetti squash cultivation in our country requires development of agricultural recommendations. The size and the quality of yield is highly affected by the sowing date and plant population. The paper presents the results of a four-year study on the effect of the sowing date (5, 15 and 25 May) and plant spacing (1 × 0.6 m, 1 × 0.8 m and 1 × 1 m, ie. 16,668, 12,500 and 10,000 plants per ha) on the yield of spaghetti squash (‘Makaronowa Warszawska’ and ‘Pyza’) under the soil and climatic conditions of central-eastern Poland. The highest yield per hectare and the largest number of marketable fruits per plant was obtained while sowing on 5 May. Delaying the sowing date resulted in a decrease in the yield per hectare and of the number of marketable fruits per plant, although the average weight of a marketable fruit sown on 15 and 25 May did not significantly differ in comparison to sowing on 5 May. Increasing the spacings between plants from 1 × 0.6 m to 1 × 1 m resulted in decreasing the yield per hectare, but the number of marketable fruits per plant was larger. Plant spacing did not have a significant effect on the average weight of a marketable fruit. The yield per hectare for the ‘Pyza’ was larger in comparison to the ‘Makaronowa Warszawska’. The number of marketable fruits per plant did not significantly differ, but the weight of the ‘Pyza’ fruit was higher.
10
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Incidence of seed-borne fungi on Lupinus mutabilis depending on a plant morphotype, sowing date and plant density

67%
Pszczolkowska A., Okorski A., Kotecki A., Gas M., Kulik T., Reczek A.
Journal of Elementology
|
2016
|
tom 21
|
nr 2
Seeds of the Andean lupine are characterised by high nutritional value, and the plant could become an important crop in the production of food and forage. This legume continues to attract growing interest around the world. A field experiment was carried out in in Lower Silesia, Poland, in 2011-2012. Two Andean lupine morphotypes (indeterminate and determinate) were analysed. Andean lupine was grown in treatments characterised by different sowing dates and plant density per m2. Seed yield, macronutrient content, protein content and health were evaluated at harvest. Seed yield was determined by the interaction of all experimental factors. The indeterminate form produced a significantly higher yield than the determinate form, regardless of the sowing date. The factors had little influence on the mineral content of seeds and total protein content. Andean lupine seeds were colonised mostly by saprotrophic fungi of the genera Alternaria, Cladosporium, Epicoccum and Rhizopus and pathogenic fungi of the genera Botrytis, Colletotrichum and Fusarium. Delayed sowing contributed to seed colonisation by fungi of the genus Colletotrichum. The determinate form was more susceptible to infection than the indeterminate form. Molecular analysis showed that the Colletotrichum isolates found in the study belong to the Colletotrichum acutatum species complex. The pathogen causing lupine anthracnose, isolated from the seeds of Andean lupine in the present study, was identified as Colletotrichum lupini (within C. acutatum complex) in a molecular analysis, and its DNA sequence was compared with those of the isolates deposited in the GenBank.
11

Early sowing and metalaxyl seed treatment reduced incidence of pearl millet downy mildew [Sclerospora graminicola [Sacc.]] in Samaru, Nigeria

67%
Zarafi A. B.
Journal of Plant Protection Research
|
2005
|
tom 45
|
nr 3
165-169
Three separate field experiments were conducted in 2001, 2002 and 2003 to determine the efficacy of combining sowing date, seed treatment with metalaxyl and use of host plant resistance for the control of pearl millet downy mildew. Early sowing gave lower disease incidence and higher grain yield than late sowing. The disease was controlled when metalaxyl treated seeds were sown early. The highest disease incidence and the lowest grain yields were obtained when untreated seeds were sown late. Use of resistant pearl millet cultivar along with seed treatment using metalaxyl at the dose of 2 g a.i./kg seeds greatly reduced disease incidence and increased grain yield in comparison with the seed treatment of susceptible cultivar.
12
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Effect of sowing date on biological value of garden orache

67%
Grzeszczuk M., Jadczak D., Kawecka A., Dlugosz I.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2010
|
tom 09
|
nr 4
Garden orache (Atriplex hortensis L.) belongs to Chenopodiaceae family. Usable parts of this species are the young stems and leaves characterized by a high content of protein. The aim of the study was the estimation of the effect of sowing date (2nd and 3rd 10-days’ period of April, and 1st 10-days’ period of May) on the biological value of garden orache leaves. The experiment was conducted in 2008–2009. Chemical analyses of raw plant material (leaves of garden orache) included determination of the content of dry matter, total sugars, titratable acidity, total ash, crude fibre, total protein, nitrates, L-ascorbic acid, chlorophylls, carotenoids, total polyphenols and antioxidant activity. It was proved that sowing date had a significant effect on the content of dry matter, total ash, total protein, total sugars, L-ascorbic acid and antioxidant activity. On the base of obtained results it was proved that plants of garden orache grown at the latest date of sowing (1st 10-days’ period of May) were characterized by the highest biological value.
13

Effects of sowing date on yield, gas exchange, chlorophyll fluorescence, membrane termo-stability, carbohydrates and protein content of durum and bread wheat cultivars

67%
Bagheri A.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2010
|
tom 545
In this study two sowing date in years 2007-08 (1 November as normal sowing date and 1 January as late sowing date) were used. Measurements of chlorophyll fluorescence, membrane thermo-stability, gas exchange parameters and carbohydrates content in two wheat cultivars (Dena as durum wheat and Roshan as bread wheat) at post- anthesis stage were recorded. Acquired thermo-tolerance showed significant variation in late sown conditions. It was inferred that durum wheat conferred less relative injury and greater thermo-tolerance possibly through maintaining cellular membrane integrity under high temperature stress. Data based on chlorophyll fluorescence revealed a reduction of mean value of both cultivars for Fv/Fm, in late sown conditions. There were not any significant differences in all measured traits between two experimental years. Heat stress, occurred in late sown condition, caused reduction in biological and grain yield, harvest index, number of seed per ear, ear length and grain weight of two cultivars. But these reductions in durum wheat were lower. Seed protein content of cultivars increased in late sowing date. There were significant differences between cultivars in protein content. The grain yield reduction in cv. Roshan was higher than Dena. It seemed that by increasing in fructan and glucose content, rather than starch content, durum wheat can cope on the heat stress better than bread wheat.
14

Cropping evaluation of white horehound [Marrubium vulgare L.], grown from sowing and seeding

67%
Zawislak G.
Herba Polonica
|
2009
|
tom 55
|
nr 3
63-68
The studies were conducted in the years 2004–2008. The available Polish and foreign literature does not devote much attention to the problem of growing white horehound. The cropping of white horehound grown from sowing and seedling was assessed in the experiment, depending on the term when the plantation was established, harvest date and age of the plants. Air dry herb was analyzed in the laboratory, where the essential oil content was determined. On the basis of the studies, it was revealed that seed sowing date and herb harvest term affect white horehound plant cropping. Differences were also found in cropping between plants from one-year and two-year plantation
15
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Monitoring methods and prognosis of Opomyza florum Fabr. (Diptera: Opomyzidae) - a pest of wheat in Bulgaria

67%
Krusteva H., Karadjova O., Ventislavov V.
Journal of Plant Protection Research
|
2012
|
tom 52
|
nr 4
The effect of sowing dates on the abundance of Opomyza florum, and the effect of sowing dates on the degree of larvae damage on winter wheat during the 2003-2008 time period was evaluated. The population density of O. florum adults and the damage larvae caused, were higher in the wheat fields sown in the last decade of September and the first half of October. Fields sown during the first decade of November were not infested by O. florum. A significant correlation between the mean temperature during the flight period and the maximum density of O. florum flies within each sowing (r = 0.94; p = 0.016) was established. The percentage of damaged shoots strongly corresponded to the maximum abundance of flies (r = 0.96; p = 0.01). The corresponding figures can be used for prognostic purposes. An adult observation accuracy below 25% was achieved by the sweep net method using 10 samples of 30 sweeps in the beginning of migration and 10 samples of 20 sweeps during the period of the O. florum mass flight. No marginal effect of adults was observed.
16

Evaluation of qualitative features of Mikon cultivar winter wheat grain and flour depending on selected agronomic factors

67%
Knapowski T., Ralcewicz M.
Electronic Journal of Polish Agricultural Universities. Series Agronomy
|
2004
|
tom 07
|
nr 1
A field experiment was carried out at the Minikowo Agricultural Experiment Station the vicinity of Bydgoszcz and aimed at defining the effect of the sowing date and nitrogen fertilisation on yielding and selected technological parameters of ‘Mikon’ winter wheat grain and flour. Two sowing dates were applied (factor I): optimal in a given year and 2-week delayed date and 4 nitrogen fertilisation levels (factor II): 0, 80, 120 and 160 kg Nˇha-1. The sowing date delayed by two weeks, as compared with the optimal date, significantly decreased the grain yield by 6.6% and increased the content of wet gluten and the value of sedimentation ratio. The dose of 120 kg Nˇha-1 was most favourable for ‘Mikon’ winter wheat yielding. A further increase in N fertilisation used to show a tendency for decreased wheat yielding.
17

Growth, development and yielding of biennial evening primrose [Oenothera biennis L.] depending on sowing date on two different soils

67%
Krol B.
Herba Polonica
|
2007
|
tom 53
|
nr 3
The experiment dealt with the influence of soil conditions and sowing date on growth and yielding of biennial evening primrose. Plant's growth and development was more inten­sive (taller and more branched plants) and seed yield almost twice as high on silty soil as compared to sandy one. The seed sowing date (summer, autumn and spring) significantly affected the number of plants emerged, percentage of plants that did not produce inflorescences and in result - seed yields. The lowest number of seeds emerged from summer sowing, the largest number of plants remaining at rosette stage was recorded after spring sowing in which the lowest seed yields were also achieved.
18

Yield and quality of raw material of milk thistle [Silybum marianum [L.] Gaertn.] grown in monoculture and in crop rotation. Part I. Reaction of milk thistle to the sowing date

67%
Andrzejewska J., Skinder Z.
Herba Polonica
|
2006
|
tom 52
|
nr 4
Yields of milk thistle grown in a monoculture were about 40% lower than the yields ob­tained in crop rotation. The yield decrease was mainly due to a damage of roots caused by Cleonus piger larvae. Two sowing dates were applied: April 1 and 22. In crop rotation higher fruit yields were obtained applying the early-sowing date and in monoculture the reaction changed across years. The delay in the sowing date resulted in an increase in the content of Silymarin in fruits from 0.3% to 0.5%. The content of Silymarin was mostly cor­related with the sum of mean daily air temperatures from the beginning of inflorescence stalk formation to plant harvest.
19

Effect of sulphur on the yield and content of glucosinolates in spring oilseed rape seeds

67%
Szulc P. M., Drozdowska L., Kachlicki P.
Electronic Journal of Polish Agricultural Universities. Series Agronomy
|
2003
|
tom 06
|
nr 2
The aim of the present research was to define the effect of sulphur nutrition on the seed yield of ‘Star’ spring oilseed rape and the content of glucosinolates. Sulphur was applied in different forms (elemental or ionic), in different ways (through soil or leaves) and doses (0, 20, 60 kgˇha-1). The laboratory research material involved seeds from a three-year field experiment set up on degraded black earth containing 1.93 mg SO4ˇkg-1 of soil. The content of glucosinolates in seeds was determined with the HPLC according EN ISO 9167-1. The application method and sulphur forms and doses increased the oilseed rape seed yield. The highest mean seed yield was obtained from plants exposed to foliar fertilisation with elemental sulphur at the dose of 60 kgˇha-1. In this case the content of glucosinolates amounted to 10.78 µMˇg-1 of dry matter and was lower as compared to objects non-fertilised with sulphur.
20

Effect of sowing date on the quantity and quality of the yield of summer savory [Satureja hortensis L.] grown for a bunch harvest

67%
Jadczak D.
Herba Polonica
|
2007
|
tom 53
|
nr 3
The aim of the study was to estimate the influence of the sowing date (10 April, 25 April and 10 May) on the quantity and quality of summer savory cv. 'Saturn' grown for a bunch harvest. It was proved that sowing date made a significant influence on the yield quantity. Higher yield was obtained when seeds were sown on 25 April, but only according to yield collected from the plots where the earliest sowing date (10 April) was used. There was no significant effect of earlier sowing date on the plant mass. However, the highest par­ticipation of leaves in the yield was noted for sowing on 10 April. The obtained yield was characterized by high content of mineral compounds. The content of essential oil in the aerially dried herb amounted 1.05-1.55%.
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