Storage behaviour of potato as affected by time of haulm killing and harvesting
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Date
2005
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CCSHAU
Abstract
The investigation “Storage behaviour of potato as affected by time of haulm killing and harvesting
was conducted at vegetable research farm and laboratories of CCS HAU Hisar during 2001-02. The study
was conducted under two sets. Ist set of samples was used for studies under ambient storage and IInd set
was used for cold storage studies. The investigation consisted of eighteen combination of nine treatment of
haulm killing at 90, 100 and 110 days after planting and field curing for 0, 10 and 20 days after haulm
killing in each treatment with two varieties (Kufri Badshah and Kufri Sutlej). Total tuber yield increased
from 246.9 q/ha to 277.4 q/ha in Kufri Badshah and from 216.3 to 248.3 q/ha in Kufri Sutlej with increase
in crop duration from 90 to 110 days after planting. The mean weight loss under ambient condition
decreased from 11.3% where crop duration was 90 days and no field curing was done to 7.4% where crop
duration was 110 days and field curing was for 20 days in Kufri Badshah. Figures for these two treatment in
Kufri Sutlej were 14.6 and 11.9% respectively.
The mean weight loss increased from 0.9 to 27.5% as the storage period prolonged from 10 to 105
days. Similarly during cold storage mean weight loss decreased as crop duration and field curing increased.
After cold storage also weight loss decreased with increase in crop duration and field curing. But after cold
storage the mean weight loss increased from 10.1 to 23.5% within one month. Sprouting percentage was
decreased from 54.0 to 47.6% in Kufri Badshah and 55.1 to 50.3% in Kufri Sutlej as the crop duration
increased from 90 to 110 days and field curing was allowed for 20 days. Sprouting percentage increased
from 22.5 to 76.1% during storage from 60 to 150 days. As the crop duration and field curing increased
mean dry matter content also increased. It ranged from 16.5 to 18.1% in Kufri Badshah and 15.3 to 17.9%
in Kufri Sutlej with increase in crop duration from 90 to 110 days and field curing was allowed from 0 to 20
days. The dry matter content also increased as the storage period increased. It ranged from 16.4 to 17.3%
during storage of 30 to 150 days. Sugar content slightly increased with increase in crop duration and also
with field curing, however there was no set pattern. During storage sugar content increased for the first 60
days and lateron it decreased.
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