YIELD MAXIMIZATION IN WHEAT THROUGH NUTRIENT MANAGEMENT AND PLANT GROWTH REGULATORS
Loading...
Date
2019-08-31
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CSK HPKV, Palampur.
Abstract
A field experiment was conducted at the Experimental Farm of CSKHPKV, Rice and
Wheat Research Centre, Malan during rabi season of 2017-18 to study the effect of
application of growth regulators on wheat crop raised under different fertility levels
with objective of achieving yield maximization. The experiment consisted of four
fertilizer levels (control; 100% recommended dose of fertilizer RDF, 120:60:30;
150% RDF and 150% RDF + 15 t FYM/ha) in main plot and four plant growth
regulator treatments (two sprays each of water, chlormequat chloride 0.2%,
tebuconazole 0.1% and chlormequat chloride 0.2% + tebuconazole 0.1%) in sub plot,
laid out in split plot design with three replications. The soil of the experimental field
was silty clay loam in texture, acidic in reaction, medium in available nitrogen and
potassium and high in available phosphorus. Application of 150% RDF along with
15t FYM/ha resulted in significantly higher values for all the yield attributes viz.,
number of effective tillers/m2, number of grains/spike and 1000- grain weight while
significantly lowest values of all these attributes were recorded in control in which no
fertilizer or manure was added. Application of highest dose of fertilizer along with
FYM gave yield (54.8 q/ha) which was 228% higher than yield obtained in control
treatment. Highest nitrogen, phosphorus and potassium uptake by wheat was also
recorded with the integrated use of 150% RDF + 15 t FYM/ha, the same treatment
also resulting in highest gross and net return though net return per rupee invested was
highest with 150% RDF. Application of both the growth regulators significantly
reduced the plant height and internode length while stem diameter was significantly
increased. Application of tebuconazole alone resulted in significantly higher wheat
yield while the effect of chlormequat chloride application was not significant. Thus
the farmers can go in for higher application of 150% of RDF along with FYM
application @ 15 t/ha as well as use tebuconazole 0.1% for obtaining higher yield of
wheat.
Description
Keywords
null