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EFFECT OF PLANT GROWTH REGULATORS AND CHEMICALS ON PANICLE EMERGENCE AND YIELD OF LATE SOWN RICE

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Title EFFECT OF PLANT GROWTH REGULATORS AND CHEMICALS ON PANICLE EMERGENCE AND YIELD OF LATE SOWN RICE
 
Creator ASHAKUMARI, A
 
Contributor MADHAVI, K
 
Subject PLANT, GROWTH, REGULATORS, CHEMICALS, PANICLE, EMERGENCE, YIELD, LATE, SOWN, RICE
 
Description Experiment on “Effect of plant growth regulators and chemicals on
panicle emergence and yield of late sown rice” was carried out during Kharif 2013 at
Agricultural Research Institute, Rajendranagar, Hyderabad, under the Southern
Telangana agro-climatic zone of Andhra Pradesh. The soil of the experimental site was
sandy loam in texture, alkaline in reaction. The experiment was laid out in randomized
block design with ten treatments (T1- Foliar spray of GA3 @ 90 g ha-1 + Boron 0.1% ;
T2- Foliar spray GA3 @ 135 g ha-1 + Boron 0.1% ; T3- Foliar spray KH2PO4 0.2% +
Boron 0.1% ; T4- Foliar spray GA3 @ 90 g ha-1 + KH2PO4 0.2% + Boron 0.1% ; T5-
Foliar spray NAA @ 100 g ha-1 + Boron 0.1% ; T6- Foliar spray NAA @ 200 @ g ha-1
+ Boron 0.1% ; T7- Foliar spray BIOBRASS @ 0.3 l ha-1; T8- Foliar spray BIOBRASS
@ 0.6 l ha-1 ; T9- Submergence of field with 15-20 cm depth of water at booting stage ;
T10-Conrol ) and replicated thrice. The cultivated variety grown was Samba mahsuri
(BPT-5204) is a medium slender grain indica rice variety with duration of 140 – 150
days and yield potential of 5 to 6.5 t ha-1. Treatments are applied as foliar spray on 1st,
3rd and 5th day of 5 per cent panicle emergence.
Higher plant height recorded with application of GA3 @ 135 g ha-1 + Boron
0.1% which was on par with application of GA3 @ 90 g ha-1 + Boron 0.1% and GA3 @
90 g ha-1 + KH2PO4 0.2% + Boron 0.1% at 90 DAP and at harvest. At 90 DAP and at
harvest more number of tillers m-2 was produced with application of GA3 @ 90 g ha-1 +
KH2PO4 0.2% + Boron 0.1% this was on par with application of GA3 @ 135 g ha-1 +
Boron 0.1% and BIOBRASS 0.6 l ha-1. At 90 DAP, application of NAA @ 200 g ha-1 +
Boron 0.1% and application of GA3 @ 90 g ha-1 + Boron 0.1 % was also on par with
these treatments.
At 90 DAP, highest dry matter m-2 was observed with application of GA3 @ 90
g ha-1 + KH2PO4 0.2% + Boron 0.1% and which was on par with GA3 @ 135 g ha-1 +
Boron 0.1% and at harvest, application of GA3 @ 135 g ha-1 + Boron 0.1% recorded
more dry matter production.
Days to 5% panicle emergence has not differed in all the treatments, as the
treatments are imposed at 5% panicle emergence stage. The crop has come to 5%
panicle emergence at 104 days after planting and Days to 50% flowering observed
earlier with application of GA3 @ 90 g ha-1 + Boron 0.1%, GA3 @ 90 g ha-1 + KH2PO4
0.2% + Boron 0.1%, BIOBRASS @ 0.6 l ha-1 and GA3 @ 135 g ha-1 + Boron 0.1%
which were on par with each other.
Panicle exertion percentage was maximum with application of GA3 @135 g ha-1
+ Boron 0.1% and this was on par with GA3 @ 90 g ha-1 + KH2PO4 0.2% + Boron
0.1% , highest flag leaf angle was observed with application of GA3 @135 g ha-1 +
Boron 0.1%. Panicles m-2 was maximum with application of GA3 @ 90 g ha-1 +
KH2PO4 0.2% + Boron 0.1% and which was on par with NAA @ 200 g ha-1 + Boron
0.1%, GA3 @ 135 g ha-1 + Boron 0.1%, BIOBRASS @ 0.6 l ha-1, GA3 @ 90 g ha-1 +
Boron 0.1 %, NAA @ 100 g ha-1 + Boron 0.1% and KH2PO4 0.2% + Boron 0.1%.
Highest panicle length was observed with application of GA3 @ 90 g ha-1 +
KH2PO4 0.2% + Boron 0.1% which was on par with GA3 @135 g ha-1 + Boron 0.1%,
GA3 @ 90 g ha-1 + Boron 0.1%, BIOBRASS @ 0.6 l ha-1 and NAA @ 100 g ha-1 +
Boron 0.1%. Maximum filled grains panicle-1 was observed with application of
BIOBRASS @ 0.6 l ha-1 and maximum ill filled grains panicle-1 noticed in control.
Highest seed set percentage was observed with application of BIOBRASS @
0.6 l ha-1 and highest test weight was recorded with application of GA3 @ 90 g ha-1 +
Boron 0.1%. Maximum grain yield was observed with application of BIOBRASS @
0.6 l ha-1 which was on par with application of GA3 @ 90 g ha-1 + KH2PO4 0.2% +
Boron 0.1%. More straw yield noticed with application of GA3 @ 90 g ha-1 + KH2PO4
0.2% + Boron 0.1% and which was on par with application of GA3 @ 135 g ha-1 +
Boron 0.1% and GA3 @ 90 g ha-1 + Boron 0.1%, the maximum harvest index was
recorded with application of BIOBRASS @ 0.6 l ha-1.
Highest gross returns was observed with application of BIOBRASS @ 0.6 l ha-1
and this was on par with application of GA3 @ 90 g ha-1 + KH2PO4 0.2% +Boron 0.1%,
more net returns and highest B:C ratio was observed with application of BIOBRASS @
0.6 l ha-1.
 
Date 2016-09-07T13:44:57Z
2016-09-07T13:44:57Z
2014
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/75919
 
Language en
 
Relation D9512;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD