STUDIES ON EFFECT OF GROWTH SUBSTANCES SPRAY, BUNCH SLEEVING AND UREA BUNCH STALK FEEDING ON IMPROVEMENT OF YIELD AND QUALITY ATTRIBUTES OF BANANA cv. Nanjanagudu Rasabale
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Date
2010-07-25
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University of Agricultural Sciences GKVK, Bangalore
Abstract
Banana is one of the major commercial fruit crops grown in
tropics, subtropics and considered as one of the most economical source
of food. The choice table cultivar “Nanjangudu Rasabale” comes under
southern dry zone (6) of Karnataka and is a highly commercial cultivar.
But nowadays the area under this cultivar is decelerating because of the
serious problems such as Fusarium wilt and low productivity.
In this regard, a field experiment was conducted to determine the
effect of different pre harvest treatments on improvement of yield and
quality of Nanjangudu rasable (AAB) at a farmer’s field in Bythanahalli,
Nanjangudu taluk, Mysore district in 2009-2010. Experiment was laid in
RCBD with 14 treatments and two replications. Gibberillic Acid (GA) and
Sulphate of Potash bunch (SOP) were sprayed twice on bunch, urea was
given as bunch stalk feeding and White High Density Polyethylene
Transparent (WHDT) was covered immediately after bunch emergence.
Results revealed that, at the time of harvest, GA (200 ppm) spray
which helps in faster cell multiplication and division gave highest finger
length and weight of 13.1 cm and 97.30 g respectively. Finger girth was
highest at SOP 2% (13.0 cm) spray owing to the reason that potassium is
involved in the process of phloem loading and unloading of
photosynthetic assimilates. Bunch weight was highest in GA spray of
200 ppm (6.37 kg) followed by SOP at 2% (6.31 kg) and urea at 30 g/l
(6.24). Days taken to harvest maturity were least in WHDT treatment (98
days) as a possible low diurnal temperature variation inside the covered
bunch provides uniform growth condition for fruit. Regarding the quality
of fruit, SOP 2% gave better shelf life (5.6 days) and TSS (26.1 0B). Total
sugars were highest (26.08 %) in WHDT treatment. Acidity was least
(0.30 %) in WHDT treatment probably owing to efficient conversion of
acid to sugar in the treated fruits.
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