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1
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Effect of pre-harvest application of gibberellic acid on the contents of pigments in cut leaves of Asarum europaeum L.

100%
Pogroszewska E., Joniec M., Rubinowska K., Najda A.
Acta Agrobotanica
|
2014
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tom 67
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nr 2
The experiment determined the effect of gibberellic acid applied prior to harvest on the contents of plant pigments in cut leaves of wild ginger (Asarum europaeum L.), cultivated in an unheated plastic tunnel and in the field. Foliar application of GA3 at a concentration of 100, 200, 400, 600 mg x dm-3 was repeated four times every two weeks. It has been proven that pre-harvest spraying of plants with gibberellic acid at a concentration of 100 mg x dm-3 has a positive effect on the content of photosynthetically active pigments in the leaves of A. europaeum cultivated in an unheated plastic tunnel. Application of GA3 at a concentration of 600 mg x dm-3 led to the accumulation of the greatest amount of anthocyanins in the leaves of Asarum europaeum cultivated both in the unheated plastic tunnel and in the field. The response of plants to GA3 application, expressed in the amount of flavonoids, depended on conditions related to the cultivation site. Pre-harvest treatment of A. europaeum plants with gibberellic acid at concentrations of 100-600 mg x dm-3 reduced the production of flavonoids in tunnel-grown wild ginger, but enhanced their accumulation in plants cultivated in the field. Pre-harvest application of gibberellic acid did not affect the fresh weight or dry mass content in plant material.
2
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Aminoethoxyvinylglycine and foliar zinc treatments play a key role in pre-harvest drops and fruit quality attributes of 'William's Pride' apple

84%
Ozturk B., Yildiz K., Erdem H., Karakaya O., Ozturk A., Aglar E.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 2
Productivity of plants is determined by multiple factors that directly affect one another, therefore yield variability may be high and difficult to predict. Most often, however, a lower crop yield is achieved in the notillage system than in the ploughing system. An exact field experiment was undertaken to determine the yield and chemical composition of pea seeds sown under conditions of: 1) conventional tillage – CT (shallow ploughing and harrowing after the harvest of previous crop, pre-winter ploughing in winter); 2) reduced tillage – RT (stubble cultivator after the harvest of previous crop); and 3) herbicide tillage – HT (only glyphosate after the harvest of previous crop). A cultivation unit was applied on all plots in the springtime. Pea seed yield was higher by 14.1% in the CT than in the RT system and by 50.5% than in the HT system. The CT system was increasing the plant number m–2, number of pods and seeds m–2, seed mass per plant, and 1000 seeds mass, compared to the other systems. Protein content of seeds was at a similar level in all analyzed tillage systems, but was affected by the study year. In turn, the mineral composition of seeds was determined by both tillage system and study year. The seeds harvested from CT plots contained more phosphorus and iron, those from RT plots – more calcium and zinc, whereas those from HT plots – more phytate-P, potassium, magnesium, and copper, compared to the seeds from the other plots.
3
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Pre-harvest foliar application of vegetables extract improves the quality of harvested grape

67%
Abbasi N. A., Kareem A., Hafiz I. A., Qureshi A. A., El-Gioushy S.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
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tom 18
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nr 6
This study focused on examining the effect of vegetables extract foliar application on storage quality of the grapes grape (Vitis vinifera L. cvs. ‘Perlette’ and ‘King’s Ruby’). The vines were sprayed after fruit set twice at 15 days interval at concentrations of 0, 0.20%, 0.30% and 0.40%. Fruit were harvested and kept under cold-storage at 0.5 ±0.5°C and 90% RH for 28 days. The physicochemical properties of treated and untreated berries were analyzed at 7 days intervals during the cold storage. The results showed that the pre-harvest application of vegetable extracts reduced the weight loss and inhibited the fruit decay. Treated grape also had higher ascorbic acid contents, total phenolics, 2,2-diphenyl-1-picrylhydrazyl-radical (DPPH) scavenging activity, and higher soluble solid contents, titratable acidity, and reduced sugar:acid ratio. The concentration of 0.30% and cultivar ‘Kings Ruby’ gave the best result as compared to untreated control. In conclusion, pre-harvest vegetables extract application on berries showed higher antioxidant activities in grape berries, and maintained their post-harvest quality. These results indicated that foliar spray of vegetables extract could effectively improve the fruit quality, mainly through the reduction of phenolic content.
4

Rzepak bezposrednio z pnia

51%
Walkowski T.
Agrochemia
|
2001
|
nr 06
3-5
5

Wpływ nowych środków ochrony roślin stosowanych przedzbiorczo w ochronie selera na zdrowotność korzeni w okresie długotrwałego przechowywania

51%
Ostrowska A., Robak J.
Progress in Plant Protection
|
2009
|
tom 49
|
nr 1
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