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1

Influence of working parameters of the “Natalia” combine harvester manufactured by the Weremczuk Company on the harvest quality of red raspberries

100%
Kowalczuk J., Zarajczyk J.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2008
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tom 08a
2

Evaluation of mechanical harvest quality of primocane raspberries

100%
Rabcewicz J., Danek J.
Journal of Fruit and Ornamental Plant Research
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2010
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tom 18
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nr 2
239-248
The aim of study was to evaluate the efficiency of a mechanical harvest of primo­cane (autumn) raspberry. The harvest was carried out using the tractor-pulled, one- row harvester "Natalia", equipped with four shakers. Two cultivars of raspberry: 'Polka' and 'Polana' were used in the evaluation of the quality of work. One ampli­tude (50 mm) and several frequencies (from 6.7 to 11.7 Hz) of shakers were applied. The following factors were evaluated during the conducted tests: amount of ripe and unripe picked fruits, amount of ripe fruits left on canes, and amount of fruits fallen on ground. The efficiency of mechanical harvest depended on the detachment forces of fruits and applied frequencies of shaker vibrations. Decrease of detachment forces during the vegetation season allowed application of lower shaking frequencies which reduced the percentage of unripe fruits harvested by the machine. Fruit loss on the ground was 1 -5% and was independent of shaking parameters. A better quality of harvest was achieved for the 'Polka' cultivar. Depending on the used harvest parame­ters, 60-80% of 'Polka' fruits were successfully harvested. 'Polana' was characterized by higher detachment forces and significantly lower quality of harvest (50-70%).
3
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The effect of supplemental assimilation lighting with HPS and LED lamps on the cucumber yielding and fruit quality in autumn crop

100%
Kowalczyk K., Gajc-Wolska J., Bujalski D., Mirgos M., Niedzinska M., Mazur K., Zolnierczyk P., Szatkowski D., Cichon M., Leczycka N.
Acta Scientiarum Polonorum. Hortorum Cultus
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2018
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tom 17
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nr 4
The aim of the study was to evaluate the effect of HPS and LED assimilation lighting and LED interlighting on the yielding and as cucumber fruit quality in autumn cultivation cycle. The possibilities of increasing the density of plants due to the use of LED technology were also assessed. The study was conducted in three compartments: I with HPS top light only; II with top light HPS + 2 line LED interlight, III with 100% LED, top LED + 2 line LED interlight. Light level was in every compartment kept at the level of ~320 µmol m–2 s–1. PAR. The number and weight of cucumber fruits were investigated. The harvest was carried out every day. To assess the harvest quality for the plants grown in the two terms fruits were then examined for the chemical quality attributes of cucumber fruit, such as the content of total soluble solids (TSS), total sugars (TS), ascorbic acid and nitrate (NO3) P, K and Ca. Another part of fruits was subjected to sensory analysis performed with the scaling method. The cucumber grown in the autumn growing cycle gave higher yield and the quality of fruits produced appeared more balanced for the plants lighted with HPS+LED or 100% LED as compared to the traditional, overhead HPS lighting. The above, together with the results from the rate of buds’ abortion assessment seem to legitimate the increase in the cucumber crop density when applying LED lighting.
4

An influence of the working parameters of Alina Supernova combine on harvest quality of carrot roots

80%
Kowalczuk J., Leszczynski N.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2009
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tom 09
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