Wyniki wyszukiwania

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Investigating effects of over-irrigation and deficit irrigation on yield and fruit quality in Pink LadyTM ‘Rosy Glow’ apple

100%

Atay E., Hucbourg B., Drevet A., Lauri P.-E.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2017

|

tom 16

|

nr 4

Fruit production has to be adapted to climate change that is often associated with heat and water deficit episodes. To develop efficient strategies on how to manage commercial orchards under deficit water supply, we need to know the effects of water-stress on crop production. However, when the water supply is abundant apple growers often think that over-irrigation gives higher marketable fruit yield than potential evapotranspiration-based or sensor-based (e.g. tensiometer, dendrometer) irrigation. We therefore aimed to evaluate the effects of three water regimes, namely well-watered (100% of crop evapotranspiration – ETc, WW), 25% of ETc water deficit over the season (water-stressed, WS), and twofold of WW (200% of ETc, 2xWW), on midday stem water potential (SWP), crop yield and fruit quality of Pink LadyTM ‘Rosy Glow’ apples. As expected, SWP was lower in WS than in the others, but both WS and 2xWW decreased fruit yield, although 2xWW tended to increase yield in the >70% color class and ensured quite a constant amount of yield at each picking time. Soluble solid content (SSC) in fruit was higher in WS. As a whole, our results suggest that over-irrigation that is sometimes recommended to keep a safety margin should be considered with caution. Rather, a mild water-stress, between WS and WW in our experiment, may represent a good compromise for a good quality yield.

2

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

100%

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.

3

A new species of Corticeus Piller & Mitterpacher from Turkey, with an updated key to Turkish species belonging to this genus (Coleoptera: Tenebrionidae)

76%

Soldati F., Jansson N., Avci M., Atay E., Coskun M., Kayis T., Aytar F.

Annales Zoologici

|

2019

|

tom 69

|

nr 1

A new darkling beetle species, Corticeus turcicus F. Soldati, sp. nov., is described from six localities in Turkey. The only related species in Europe and the whole Mediterranean basin seems to be C. unicolor Piller & Mitterpacher, 1783 from which it differs by the smaller body size, yellowish coloration, different with ratio between pronotum and elytra and aedeagal morphology. An updated identification key to the currently known Corticeus species of Turkey is proposed and all species are illustrated. The types of Corticeus fusciventris Reitter, 1884 and C. rufobasalis (Pic, 1917) were studied and a new synonymy is established: C. fasciatus (Fabricius, 1790) = C. rufobasalis (Pic, 1917), syn. nov.

4

Orchard performance of apple worsens as weed competition increases: a long-term field study under Mediterranean conditions

76%

Atay E., Gargin S., Esitken A., Atay A. N., Altindal M., Emre M.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2017

|

tom 16

|

nr 5

Crop-weed competition (CWC) for water and nutrients can negatively affect orchard performance, especially in high-density apple orchards. With this study, we compared the effects of three CWC levels: Weak, Moderate, and Strong for the orchard performance of apple in the Mediterranean area. The study was conducted at a ‘Golden Delicious’/M.9 orchard in a high-density formation (3.5 × 1 m spacing). Cumulative yield was greatest in Weak-CWC, and it decreased as CWC increased. Overall, Weak-CWC performed remarkable results for successful apple production under Mediterranean conditions.

Ograniczanie wyników

3 Acta Scientiarum Polonorum. Hortorum Cultus

1 Annales Zoologici

4 Atay E.

2 Drevet A.

2 Hucbourg B.

2 Lauri P.-E.

1 Altindal M.

1 Atay A. N.

1 Avci M.

1 Aytar F.

1 Coskun M.

1 Emre M.

1 Esitken A.

1 Gargin S.

1 Jansson N.

1 Kayis T.

1 Soldati F.

2 2019

2 2017

Investigating effects of over-irrigation and deficit irrigation on yield and fruit quality in Pink LadyTM ‘Rosy Glow’ apple

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

A new species of Corticeus Piller & Mitterpacher from Turkey, with an updated key to Turkish species belonging to this genus (Coleoptera: Tenebrionidae)

Orchard performance of apple worsens as weed competition increases: a long-term field study under Mediterranean conditions