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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Improving quality attributes of tomato during cold storage by preharvest foliar application of calcium chloride and potassium thiosulfate

100%
Semida W. M., Emara A. E., Barakat M. A.
International Letters of Natural Sciences
|
2019
|
tom 76
The aim of this trial was to investigate the pre-harvest foliar application of calcium chloride and potassium thiosulfate each at 0.0, 0.2 and 0.4 % on some quality of tomato fruit (hybrid 65010) during cold storage. The experimental layout of cold storage experiments was a split-split-plot based on Randomized Complete Blocks design with three replications. Time of cold storage, calcium chloride and potassium thiosulfate levels were randomly distributed in the main, sub- and sub-sub plots, orderly. At the termination of cold storage, effect on tomato fruit titratable acidity, vitamin C and lycopene contents while, negative impact on firmness and total soluble sugars contents was obtained. At termination of cold storage, pre-harvest foliar calcium chloride at 0.2 and/or 0.4 % caused increments in fruit titratable acidity, vitamin C, total soluble sugars, lycopene and firmness contents. In addition, pre-harvest foliar potassium thiosulfate at 0.4 % enhanced fruit vitamin C, total soluble sugars, lycopene and firmness contents and also increased titratable acidity content. Generally, the interaction between cold storage × pre-harvest foliar calcium chloride or potassium thiosulfate at 0.2 and/or 0.4 % increased fruit total titratable acidity, vitamin C, total soluble sugars, lycopene and firmness contents. Also, the interaction between pre-harvest calcium chloride × potassium thiosulfate at 0.4 % was distinguished and increased all studied fruit quality at the end of cold storage. The interaction treatment of cold storage × calcium chloride at 0.4 % × potassium thiosulfate at 0.4 % was the best that improved fruit quality more than others.
2

The influence of maleic hydrazide preharvest treatment on quality and storage ability of early onion cultivars at cold store conditions

67%
Gajewski M., Majewski K.
Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture
|
2008
|
tom 29
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The impact of pre-harvest treatment with gamma-aminobutyric acid (GABA) and salicylic acid on vase life and post-harvest traits of tuberose cut flowers

67%
Babarabie M., Zarei H., Eskandari A.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 4
Tuberose (Polianthes tuberosa L.) is an ornamental bulbous plant and a famous cut flower in tropical and subtropical regions. Post-harvest senescence of the cut flowers is the main factor limiting the marketability of most of these species including tuberose. From the perspective of metabolic changes, senescence happens as the result of oxidative processes induced by active oxygen species production. Gamma-aminobutyric acid (GABA) and salicylic acid (SA) are compounds with some functions in the post-harvest physiology of some plants. The present study focused on the effect of GABA and SA on vase life and some post-harvest traits of cut tuberose flowers. The plants were sprayed with GABA (5, 10, or 15 mg L–1) and SA (50, 100, or 150 mg L–1) at three stages during growth and before harvest in a greenhouse (30, 45, and 60 days after the planting of the bulbs) and were observed after harvest until senescence. Results showed that GABA and SA positively affected the vase life, water uptake, fresh weight, ion leakage, total dissolved solids, chlorophyll, protein, and catalase, peroxidase, and ascorbate peroxidase enzymatic activity. They postponed senescence. The highest and lowest vase lives were observed in plants treated with 10 mg L–1 GABA (11 days) and control (distilled water) (7 days), respectively. It was found that the treatment of tuberose with GABA and SA during growth can improve its post-harvest quality. However, it is recommended to conduct further studies on them.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effects of preharvest deficit irrigation treatments in combination with reduced nitrogen fertilization on orchard performance of nectarine with emphasis on postharvest diseases and pruning weights

67%
Atay E., Hucbourg B., Drevet A., Lauri P.-E.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 1
Fruit production should be adapted to future scenarios that are frequently associated with scarce resources, especially freshwater and fertilizers. New biologically-based fruit production strategies, i.e. taking into account tree growth and water status, are required to optimize irrigation and fertilization under abiotic stress conditions. It was hypothesized that a moderate abiotic stress, here deficit irrigation with or without nitrogen deficit, in the preharvest period, could decrease postharvest losses due to diseases and pruning weights due to reduced vegetative growth, without sacrificing the yield and fruit quality. This study was conducted over two years using the same trees of ‘Moncante’ nectarine cultivar grown in a commercial orchard. Trees were assigned to three treatments: (1) full irrigation at 80% estimated crop evapotranspiration (ETc), (2) deficit irrigation, i.e. at 75% of full irrigation, and (3) deficit irrigation and deficit nitrogen, i.e. at 75% of full irrigation and 75% of usual N-fertilization adopted by the grower in this commercial orchard. Deficit irrigation alone and in combination with deficit nitrogen reduced postharvest diseases and pruning weights without significant yield losses. Our results suggest that ETc-based approaches of reduced water irrigation may be a sustainable way to decrease phytosanitary inputs and workload in the orchard while maintaining the orchard performance.
5

Zwalczanie perzu przed zbiorem zboz

67%
Badowski M.
Agrochemia
|
2001
|
nr 07
17-19
6

Jak zmniejszyc straty nasion rzepaku

59%
Walkowski T.
Agrochemia
|
2003
|
nr 06
8-10
7

Wybierz wlasciwy sposob walki z perzem

59%
Stachecki S.
Agrochemia
|
1995
|
nr 06
13-15
8

Czas już odchwaszczać pola przeznaczone pod buraki cukrowe

43%
Miziniak W.
Agrochemia
|
1998
|
nr 08
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