Sjemenarstvo, Vol. 28 No. 1-2, 2011.
Original scientific paper
YIELD AND TUBER QUALITATIVE CHARACTERISTICS OF LOCAL POTATO CULTIVAR POLURANKA
Adrijana FILIPOVIĆ
; Faculty of Agriculture and Food Technology University of Mostar
Elma SEFO
; Faculty of Agriculture and Food Technology University of Mostar
Ana SABLJO
; Faculty of Agriculture and Food Technology University of Mostar
Marija LASIĆ
; Faculty of Agriculture and Food Technology University of Mostar
Zrinka KNEZOVIĆ
; Faculty of Agriculture and Food Technology University of Mostar
Abstract
Trials with potato cultivar Poluranka were conducted in Bosnia and
Herzegovina. Tuber dry matter, N and NO3-N content were detected in
different growth phases. Complete randomized block design in three
replications with four nitrogen treatments (50, 100, 150 and 200 kg N ha-1)
and control (0 kg N ha-1) were used. Duration of vegetation period of
Poluranka was 125 days. Tubers were sampled on 110th day and 125th day
after planting (DAP). Samples were dried in dry oven on 105°C for 5 to 6
hours for dry matter analysis. Total N content was determinate in relation to
tuber total dry matter (%). Concentration of NO3-N was analyzed in tuber
sap. Tubers from five plants per replications were collected, weighted and
calculated as t ha-1 yield. Optimal dry matter content in limits of 18.46 to
23.03 % has no significant difference under higher input of nitrogen.
Considering nitrogen fertilization treatments and two sampling periods
higher dry matter content was found in control treatment and generally at
first sampling. Tuber N content was 1.12% to 1.77% and showed no
significant differences regarding fertilization treatments and sampling time.
Content of NO3-N in tuber sap was significant with sampling time but the
differences in fertilization treatment were not so high to show differences in
tuber NO3-N content. Yield was significantly influenced by fertilization with
increasing N doses and sampling time, with range of 12.72 t ha-1 to 31.07 t
ha-1. So far there were no research carried out in relation to the measurement
of mentioned parameters of Poluranka varieties with respect to the
application of different N fertilization and time of sampling. Since Poluranka
is local autochthonous cultivar adapted to highland area of Herzegovina and
maintained by people in the area, same qualitative characteristics can be
comparable to modern cultivar, but biotic and abiotic factors influenced on
yield performance.
Keywords
potato; autochthonous variety; dry matter; N; NO3-N; yield
Hrčak ID:
77203
URI
Publication date:
27.10.2011.
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