Integrated Nutrient Management in Barley (Hordeum vulgare L.)
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Date
2021
Authors
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Publisher
MPUAT, Udaipur
Abstract
A field experiment entitled “Integrated Nutrient Management in Barley
(Hordeum vulgare L.)” was conducted on clay loam soil having low in available
nitrogen (287.60 to 288.30 kg ha-1), medium in available phosphorus (18.80 to 20.50
kg ha-1) and high in available potassium status (338.70 to 346.40 kg ha-1) with slightly
alkaline in reaction at the Instructional Farm, Department of Agronomy, Rajasthan
College of Agriculture, MPUAT, Udaipur during the rabi season 2017-18 and 2018-
19 with the objective to evaluate the effect of integrated nutrient management on
productivity of barley. The experiment was laid out in randomized block design
(Factorial) with comprised combinations of six fertility levels and four liquid bio
inoculants.
The barley crop fertilized with 125% RDF in conjunction with 5 t FYM ha-1
significantly enhanced plant height, dry matter accumulation at successive growth
stages, dry matter partitioning at harvest, number of tillers, chlorophyll content and
growth efficiency which was found at par with application of 100% RDF + 5 t FYM
ha-1 (except plant height) over rest of fertility levels during both years. These
improvement manifested in the production of higher effective tillers, ear length, ear
weight, grains ear-1, grain weight ear-1, straw weight ear-1, filled spikelet ear-1 and test
weight with the concomitant increase in productivity in terms of grain, straw and
biological yield. The magnitude of increase was to the tune of 42.46, 27.49, 32.95 and
38.90, 26.18, 30.80 per cent, respectively over the application of 75% RDF. Highest
N, P and K concentration and accumulation also recorded under both these treatments
in grain and straw thereby total uptake. Both 125% RDF + 5 t FYM ha-1 and 100%
RDF + 5 t FYM ha-1 fetched net return of ` 66492 and 64933 with B-C ratio 2.15 and
2.14. The results showed that seed treatment with liquid bio-inoculants Azotobactor
+ Azospirillum + Phosphates solubilizer + PGPR significantly improved growth
parameters viz., plant height, dry matter accumulation at successive growth stages,
total tillers, chlorophyll content, growth efficiency and yield attributes viz., effective
tillers, ear length, ear weight, grains ear-1, grain weight ear-1, straw weight ear-1, filled
spikelet ear-1 and test weight thereby grain, straw and biological yield of barley crop
which was found at par with inoculation of Azotobactor + PSB over inoculation of
Azotobactor and PSB alone during both the years of investigation. Seed inoculation
with liquid bio-inoculant Azotobactor + Azospirillum + Phosphates solubilizer +
PGPR significantly improved grain, straw and biological yield to the extent of 28.96,
25.70, 11.32, 7.50 and 17.82, 14.20 per cent, respectively over inoculation of
Azotobactor and PSB alone. The corresponding increase in grain, straw and biological
yield with seed inoculation by liquid bio-inoculants Azotobactor + PSB was 34.73,
31.32, 15.22, 11.26 and 22.37, 18.61 per cent.
Further seed inoculation of barley with liquid bio fertilizer consisted
combination of Azotobactor + Azospirillum + Phosphates solubilizer + PGPR
recorded maximum N, P and K concentration and accumulation in grain and straw
thereby total uptake which was found at par with Azotobactor + PSB inoculation over
inoculation of Azotobactor and PSB alone during both years. Inoculation of barley
seed with liquid bio-inoculant consisting combination of Azotobactor + Azospirillum
+ Phosphates solubilizer + PGPR recorded maximum net return (` 67906) and B-C
ratio 2.44 closely followed by seed inoculation with liquid bio-inoculant Azotobactor
+ PSB with net return (` 65006) and B-C ratio 2.31 registering significantly higher
over inoculation with Azotobactor and PSB alone.
Description
Integrated Nutrient Management in Barley
Keywords
Citation
Jat M.L. and Chaplot P.C.