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“EFFECT OF BIO-REGULATORS ON GROWTH, DRY MATTER PRODUCTION AND YIELD IN RICE FALLOW MAIZE (Zea mays L.)”

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Title “EFFECT OF BIO-REGULATORS ON GROWTH, DRY MATTER PRODUCTION AND YIELD IN RICE FALLOW MAIZE (Zea mays L.)”
 
Creator GOWTHAM, VIPPARTHY
 
Contributor NARASIMHA RAO, K.L.
 
Subject cytokinins, organic compounds, vegetative stage, silk, planting, growth substances, biological development, yields, drying, chlorophylls
RICE FALLOW MAIZE (Zea mays L.)”
 
Description The investigation entitled “Effect of Bio-Regulators on Growth, Dry
Matter Production and Yield in Rice Fallow Maize (Zea mays L.)” was
undertaken at the Agricultural College Farm, Bapatla during Rabi 2010-11. The
treatments comprised of foliar spray of Brassinosteroids @ 1 ppm, Thiourea @
1000 ppm and Kinetin @ 10 ppm and their combinations at vegetative stage and
silking stage.
Application of Brassinosteroid + Thiourea + Kinetin at vegetative stage
resulted in an increase in plant height (25.02 %). Bioregulators spray had no
influence on the flowering in maize and the number of days for flowering
reduced in some treatments but not significant. By spraying of bioregulators
Brassinosteroid + Thiourea + Kinetin at silking stage resulted in increase in leaf
area, LAI and SLW at the rate of 11.48, 11.47 and 13.64 % respectively.
Brassinosteroid + Thiourea + Kinetin at silking stage resulted in higher
total dry matter which showed an increase of 14.73 per cent over control,
indicating its positive impact in accumulating dry matter, where as
Brassinosteroid + Thiourea +Kinetin spray at silking stage recorded 12.7 %
increase in total dry matter.
The results indicated that foliar sprays enhanced growth and
development in rice fallow maize and particularly in the combined spray
treatments, physiological parameters like AGR, CGR, RGR and NAR increased
with the increment in the leaf area and dry matter production.
Biochemical parameters like membrane thermo stability index,
chlorophyll stability index, and total sugars increased with foliar spray of
bioregulators. The high total chlorophyll content was observed in the
Brassinosteroid + Thiourea + Kinetin spray at silking stage. Kinetin spray
recorded least membrane injury (15.69 %) compared to remaining treatments.
Foliar spray of bioregulators significantly increased the yield and yield
attributes. The grain yield per ha, test weight, harvest index and shelling percent
recorded were high in the combination sprays of three bioregulators at silking
stage. However spray of Thiourea at silking stage recorded high net returns of
Rs. 22889.2 and C-B ratio (1:1.53) and proved superior to the rest of the
treatments.
 
Date 2016-06-03T14:26:30Z
2016-06-03T14:26:30Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66724
 
Language en
 
Relation D9030;
 
Format application/pdf
 
Publisher ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY