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1

Magazyn s.o.r. i stanowisko do napelniania i mycia opryskiwaczy. Cz.II

100%
Swiechowski W.
Ochrona Roślin
|
2008
|
tom 53
|
nr 01
31-33
2

Opryskiwacze polowe

100%
Swiechowski W.
Owoce, Warzywa, Kwiaty
|
2000
|
nr 20
3

Okresowa ocena stanu technicznego opryskiwaczy polowych

100%
Swiechowski W.
Owoce, Warzywa, Kwiaty
|
2001
|
nr 14
24-25
4

Magazyn s.o.r. i stanowisko do napelniania i mycia opryskiwaczy cz. I

100%
Swiechowski W.
Ochrona Roślin
|
2007
|
tom 52
|
nr 12
33-35
5

Poszukiwanie nowych technik opryskiwania sadow

88%
Swiechowski W.
Ogrodnictwo
|
1996
|
nr 3
20-21
6

Przygotowanie opryskiwacza do nowego sezonu

75%
Swiechowski W.
Sad Nowoczesny
|
2006
|
tom 34
|
nr 04
7

Okresowa ocena stanu technicznego opryskiwaczy

75%
Swiechowski W.
Sad Nowoczesny
|
2001
|
tom 29
|
nr 04
37-38
8

Effect of spraying with calcium chloride at different water rates on 'Jonagold' apple calcium concentration

63%
Wojcik P., Swiechowski W.
Acta Agrobotanica
|
1999
|
tom 52
|
nr 1-2
The aim of the study was to examine the effect of calcium chloride (CaCl,) spraying at different rates of water on apple (Malus domestica Borkh.) calcium concentration. The examination was carried out in 1997-1998 on 'Jonagold' apple trees grafted on M.26 rootstock and planted in 1990 on sandy-loam soil at a distance of 4 x 2.5 m.The trees were trained as a spindle at 2.4 m and 2 m of height and canopy width, respectively. In the experiment apple trees were sprayed with CaCl, at a rate of 7 kg ha 1 using 250, 500, 1000 and 1500 L of water volumes which gives: 2.8, 1.4, 0.7 and 0.5% CaCl, solutions, respectively. Sprays with CaCl, solutions were applied 6, 4 and 2 weeks before commercial fruit harvest. The trees unsprayed with Ca served as a control. The study showed that sprays with CaCl, at all studied water volumes had not effect on leaf and fruit damages. Regardless of the applied water rates, apples from the middle and the bottom of the canopy had higher calcium concentrations as a result of CaCl, sprays whereas this treatment had not effect on fruit calcium concentration from the top of the canopy. However, the laboratory study showed that 'Jonagolď apples from the canopy top had ability to take up exogenous calcium. It was found that efficacy of CaCl, sprays at studied water rates in increasing fruit calcium concentration was similar. The study showed as well that young 'Jonagold' fruitlets took up clearly less exogenous calcium compared to mature fruit which suggests that sprays of this cultivar with calcium salts should be applied mainly at late apple development stages.
9

Wplyw regulacji strumienia powietrza na straty cieczy opryskowej w sadzie

51%
Swiechowski W., Holownicki R., Godyn A., Doruchowski G.
Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo
|
2000
|
tom 31
|
nr 2
173-177
10

Strefy ochronne podczas stosowania środków ochrony roślin

51%
Holownicki R., Doruchowski G., Godyn A., Swiechowski W.
Problemy Inżynierii Rolniczej
|
2011
|
tom 19
|
nr 4
11

Wplyw stopnia ulistnienia na pokrycie lisci jabloni w czasie opryskiwania

51%
Godyn A., Swiechowski W., Holownicki R., Doruchowski G.
Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo
|
2000
|
tom 31
|
nr 2
39-43
12

Automatically controlled sprayer to implement spray drift reducing application strategies in orchards

51%
Doruchowski G., Swiechowski W., Gogyn A., Holownicki R.
Journal of Fruit and Ornamental Plant Research
|
2011
|
tom 19
|
nr 1
Within the EU project ISAFRUIT (www.isqfruit.org) a Crop Adapted Application System (CASA) was developed to ensure precise, efficient and safe spray application in orchards, according to actual needs of the crop and with respect to the environment. The CASA system consists of three sub-systems: (i) Crop Health Sensor (CHS) iden­tifying heath status of fruit crops, (ii) Crop Identification System (CIS) identifying the tree canopy size and density, (iii) Environmentally Dependent Application System (EDAS) identifying environmental circumstances during spray applications. In order to protect sensitive areas within the orchards surroundings (e.g. surface water, melio­ration wells, public sites) the spray application parameters such as droplet size and air flow velocity need to be carefully adjusted taking into account wind direction and velocity as well as position of sprayer in relation to these areas. On EDAS sprayer wind velocity and direction is measured with an ultrasonic anemometer, and sprayer position is determined by GPS. Nozzles are altered automatically depending on wind situation to adjust droplet size according to drift risk level. A novel fan construction allows the supporting airflow to the left and right hand sections of the sprayer to be adjusted independently. This adjustment is done automatically depending on the wind situation and sprayer position.
13

Uniformity of spray deposit within apple tree canopy as affected by direction of the air-jet in tunnel sprayers

51%
Holownicki R., Doruchowski G., Swiechowski W.
Journal of Fruit and Ornamental Plant Research
|
1997
|
tom 05
|
nr 3-4
14

Method of evaluation of spray deposit and coverage on artificial targets

51%
Holownicki R., Doruchowski G., Swiechowski W., Jaeken P.
Electronic Journal of Polish Agricultural Universities. Series Agricultural Engineering
|
2002
|
tom 05
|
nr 1
The paper presents the method of quantitative and qualitative evaluation of spray application based on deposit and coverage measurements on artificial targets. This relatively simple and fast method is proposed for small scale comparative field experiments with air-assisted orchard sprayers. Biological efficacy, being very important for the grower, is not enough informative method of evaluation of spraying technique from the cognitive point of view. Therefore fluorescent dye and filter paper as artificial targets was proposed. Water Sensitive Papers (WSP) are the most common artificial targets for spray coverage evaluation. Spray coverage expressed as a percentage of target area covered by spray give additional information what portion of protected area is in direct contact with the chemical. The method is demonstrated for the Joco tunnel sprayer and conventional air-assisted sprayers.
15

Minimizing pesticide waste and emission to the environment by using tunnel sprayers

51%
Holownicki R., Doruchowski G., Godyn A., Swiechowski W.
Journal of Fruit and Ornamental Plant Research
|
1997
|
tom 05
|
nr 3-4
16

Penetration of air within the apple tree canopy as affected by the air jet characteristics and travel velocity of the sprayer

51%
Swiechowski W., Doruchowski G., Holownicki R., Godyn A.
Electronic Journal of Polish Agricultural Universities. Series Agricultural Engineering
|
2004
|
tom 07
|
nr 2
The characteristics of air jet together with travel velocity of the sprayer are crucial factors influencing the penetration of air in the tree canopy. The objective of the study was to determine the volume of air penetrating into the canopy of apple trees, produced by three orchard sprayers with different fan types and operated at different travel velocities. Due to different fans, the following discharge systems were available: radial air flow, cross-flow and directed air flow. The sprayers were driven at 4, 6 and 8 km/h along the trees inside which the air velocity was measured in 9 points, placed in 3 vertical layers. The obtained data was processed to get the air volume penetrating the tree canopy and being delivered to the points of measurements. The influence of travel velocity on air penetration in the tree depended on the character of the air jet produced by the sprayer. For high volume/low speed air jets (radial air flow and cross flow) the decrease of travel velocity caused consid.
17
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Skutecznosc dawek cieczy wyznaczanych na podstawie objetosci koron drzew [TRV] w zwalczaniu parcha jabloni [Venturia inaequalis] i maczniaka jabloni [Podosphaera leucotricha] w sadach jabloniowych

39%
Doruchowski G., Masny S., Bryk H., Holownicki R., Swiechowski W., Godyn A.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2006
|
tom 508
55-63
Dawki cieczy stosowane w uprawach przestrzennych, takich jak sady jabłoniowe, powinny być dobrane do wielkości drzew. Jedną z metod doboru dawek dla sadów różnego typu jest wykorzystanie do ich obliczania objętości koron drzew (formuła TRV - Tree Row Volume). Celem doświadczenia była weryfikacja biologiczna koncepcji TRV. Stosowane dawki TRV okazały się skuteczne w zwalczaniu parcha jabłoni (Venturia inaeąuaUs) i mączniaka jabłoni (Podosphaera leucotricha) dzięki zachowaniu odpowiedniego poziomu naniesienia środków ochrony roślin w drzewach, których wymiary były podstawą obliczania tych dawek. Redukcja dawek w sadach półkarłowych i karłowych przynosi korzyści ekonomiczne.
18

Elektronika w opryskiwaczu

38%
Swiechowski W.
Warzywa
|
2011
|
nr 05
19

Stabilizacja belki

38%
Swiechowski W.
Warzywa
|
2013
|
nr 04
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