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Studies on effect of organics on seed yield and quality in onion (allium cepa l.) cv. n-53

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Title Studies on effect of organics on seed yield and quality in onion (allium cepa l.) cv. n-53
 
Creator Suresh C.Bendegumbal
 
Contributor Ashok S.Sajjan
 
Subject Seed Science and Technology
 
Description The field cum laboratory experiments were conducted to study the effect of organics
and their combination on seed production in onion cv. N-53 at Agricultural Research Station,
Bagalkot. The first season, experiment consisting of RDF (control) @ 125:50:125 kg
NPK/ha; RDF @ 125:50:125 kg NPK/ha + PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha; FYM
@ 25 t/ha (100%); vermicompost @ 4.2 t/ha (100%); poultry manure @ 4.2 t/ha (100%);
FYM @ 12.5 t/ha (50%) + vermicompost @ 2.1 t/ha (50%); vermicompost @ 2.1 t/ha (50%)
+ poultry manure @ 2.1 t/ha (50%); FYM @ 12.5 t/ha (50%) + poultry manure @ 2.1 t/ha
(50%); FYM @ 25 t/ha (100%) + PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha; vermicompost
@ 4.2 t/ha (100%) + PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha and poultry manure @ 4.2
t/ha (100%) + PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha. Maximum number of leaves per
plant at 30 DAT (7.4), higher bulb length (8.6 cm), higher bulb diameter (22.0 cm), higher
bulb weight (133.6 g) and also numerically higher bulb yield (40.01 q/ha) was observed with
application of vermicompost @ 4.2 t/ha (100%) alone and vermicompost @ 4.2 t/ha (100%)
+ PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha. Whereas, lowest bulb yield was obtained in
poultry manure @ 4.2 t/ha (22.58 q/ha).
Organic onion bulb produced in previous season is used for seed production using
same treatments as taken in first experiment. Significantly, maximum number of leaves per
plant at 60 DAT in seed crop (13.4), umbel diameter (15.10 cm), seed weight per umbel (5.3
g), seed weight per plant (15.43 g), seed yield per plot and per hectare (16.14 q/ha)
respectively and also 1000-seed weight higher (15.43 g) was observed in vermicompost @
4.2 t/ha (100%) + PSB @ 5 kg/ha + Azospirillum @ 5 kg/ha followed by vermicompost @
4.2 t/ha (100%). While, minimum seed yield (10.77 q/ha) was obtained with poultry manure
4.2 t/ha (100%) + PSB + Azospirillum. Seed quality parameters did not varied significantly
except root length, germination (94.30%), seedling vigour index (1675) was observed in RDF
+ PSB @ 5 kg/ha + Azospirillum @ 50 kg/ha.
The gross returns net returns and B:C ratio were greatly influenced by organics and
other combination. However, higher gross returns (Rs. 1,29,213/ha) and net returns
(Rs. 1,06,543/ha) were recorded in vermicompost @ 4.2 t per ha (100%) + PSB +
Azospirillum followed by VC alone and lowest gross returns was seen in FYM @ 12.5 t/ha
(50%) + poultry manure @ 2.1 t/ha (50%) (Rs. 90,511/ha). Although, B:C ratio was very
high at RDF (control) may be due to availability of critical inputs at lesser price as compared
to FYM and vermicompost. Organic seed production will be more viable only when farmer
produced his own organic manures.
 
Date 2016-10-25T17:18:43Z
2016-10-25T17:18:43Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81977
 
Format application/pdf
 
Publisher UAS, Dharwad