Yielding of potato var. Karlena under differentiated cultivation technology
Lech Nowak
sekretariat.kkios@upwr.edu.plKatedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu (Poland)
Agnieszka Kruhlak
Katedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu (Poland)
Zenobiusz Dmowski
Katedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu (Poland)
Abstract
The aim of the work was to determine the effect of sprinkling irrigation and differentiated mineral fertilisation on quantity and structure of potato tuber yielding. The object of the study was var. Karlena, which is good for consumption but especially for production of chips. The experiment was conducted in the years 1999–2001, at the Agro-Science Station in Samotwór that belongs to the Agricultural University of Wrocław. The trials were performed on brown soil representing good rye complex. The soil was characterised by acidic reaction (pH 5.1–5.3), medium content of available phosphorus and magnesium, and high potassium content. The weather course in successive years of the investigation was not favourable for irrigation because, aside from dry periods, an excess of rainfalls was registered in several decades. In the 3-year the average increase in yielding due to irrigation was 19%, and it varied from 16% in 2000 to 29% in the dry year 1999. The applied doses of mineral fertilisation (233 and 280 kg/ha) caused an increase in tuber yield compared to control. The increase reached 43 to 58%, depending on the fertilisation technique. The average yields in the treatments fertilized in a row-like manner were by 1.1 t/ha higher than those obtained using traditional fertilisation (broadcast over the entire area). The agro-technical treatments used in the study resulted in similar tendencies in changes of commercial yields, the range of the changes due to irrigation being higher, and that of fertilisation smaller, than in the case of general yield. Sprinkling irrigation favourably affected both the yield structure, increasing the share of large tubers, and the number and mass of tubers from one plant.
Keywords:
sprinkling irrigation, row and broadcast fertilisation, yield, yield structure, potatoReferences
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Authors
Lech Nowaksekretariat.kkios@upwr.edu.pl
Katedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu Poland
Authors
Agnieszka KruhlakKatedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu Poland
Authors
Zenobiusz DmowskiKatedra Rolniczych Podstaw Kształtowania Środowiska, Akademia Rolnicza we Wrocławiu Poland
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Copyright (c) 2004 Lech Nowak, Agnieszka Kruhlak, Zenobiusz Dmowski
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