Effect of sulphur on productivity of Indian mustard [(Brassica juncea (L.) Czern and Coss.)] genotypes
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Date
2013
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Publisher
MPUAT, Udaipur
Abstract
A field experiment entitled “Effect of sulphur on productivity of Indian
mustard [(Brassica juncea (L.) Czern and Coss.)] genotypes” was conducted
during Rabi 2011-2012 at Instructional Farm, Department of Agronomy, Rajasthan
College of Agriculture, Udaipur. The soil of the experimental site was clay loam in
texture slightly alkaline in reaction, medium in available nitrogen and phosphorus,
while high in potassium. The objectives were to assess the best performing genotype
of mustard for the region and to ascertain the suitable level of sulphur in mustard
along with economics of crop. The treatment consisted combinations of four mustard
genotypes (NRCHB-101, NRCDR-2, NPJ-112 and Laxmi) and four sulphur levels (0,
20, 40, and 60 kg S ha-1). These treatments were evaluated under factorial randomized
block design with three replications.
The results of present investigation revealed that genotypes did not show
variation in plant population recorded 25 DAS and at harvest. ‘NRCDR-2’ attained
highest plant height which was statistically at par with ‘Laxmi’ and ‘NRCHB-101’ at
successive growth stages. At 30 DAS ‘NRCDR-2’ and ‘NPJ-112’ accumulated
highest dry matter plant-1 and proved significantly higher over ‘NRCHB-101’ and
‘Laxmi’ and at 60 DAS “NRCDR-2’, ‘NPJ-112’ and ‘NRCHB-101’ were equally
efficient in dry matter accumulation but at 90 DAS and harvest, ‘NRCDR-2’
produced highest dry matter and was significantly higher over rest of the genotypes.
At harvest “NRCDR-2” was statistically at par with “Laxmi”. Amongst genotypes,
mustard genotype ‘Laxmi’ took highest days to maturity followed by ‘NRCDR-2’
which were significantly higher over ‘NRCHB-101’ and ‘NPJ-112’. Amongst yield
attributes, number of siliqua plant-1 and 1000 seed weight were significantly higher in
genotype ‘NRCDR-2’ compared to rest of the genotypes. However, number of seeds
siliquae-1 was statistically at par with ‘Laxmi’ and number of branches plant-1 was
statistically at par among genotypes ‘NRCDR-2’, ‘Laxmi’ and ‘NRCHB-101’ . The next best genotype in terms of yield attributing parameters was Laxmi’. Consequently
highest seed yield, stover yield and biological yield and harvest index were recorded
under ‘NRCDR-2’ followed by ‘Laxmi’. Alike this, highest N, P and S content of
seed and stover were recorded in genotype ‘NRCDR-2’ which was significantly
higher over ‘‘NPJ-112’ and ‘NRCHB-101’. Amongst genotypes, maximum N, P and
S uptake by seed and stover and total N, P and S uptake were registered under
genotype ‘NRCDR-2’ which were significantly higher over rest of the genotypes. At
the same time ‘Laxmi’ also proved significantly higher over rest of the genotypes.
Chlorophyll content at 60 DAS was observed highest under genotype ‘NRCDR-2’
which was significantly higher over ‘NRCHB-101’ while statistically at par with
‘Laxmi’ and‘NPJ-112’. ‘NRCDR-2’ has highest oil content (40.08%) which proved
significantly higher over rest of the genotypes “Laxmi”, “NPJ-112” and “NRCHB-
101” and were statistically at par with each other. Mustard genotypes failed to alter
sulphur status of soil after harvest of the crop. Amongst genotypes ‘NRCDR-2’
fetched highest net returns (` 69036 ha-1) and B: C (3.74) and proved best. Mustard
genotype ‘Laxmi’ proved next best genotype in terms of net returns ` 57688 ha-1and
B: C of 3.12.
Application of 40 kg S ha-1 significantly increased plant height at harvest.
Further, increase in S level upto 60 kg S ha-1 failed to record significant record.
Increasing sulphur level upto 40 kg S ha-1 sulphur significantly increased dry matter at
30, 60, 90 DAS and harvest over no sulphur, respectively. Further increase in sulphur
levels could not bring significant effect on dry matter accumulation. Applications of
60 kg S ha-1 delayed maturity by about 20 days over no sulphur. An application of 40
kg S ha-1 significantly increased yield components viz. number of siliqua plant-1 and
number of seed siliquae-1 over 20 kg S ha-1 and no sulphur. However, number of
branches plant-1 and 1000 seed weight were significantly increase by application of 20
kg S ha-1 over no sulphur. Consequently seed yield, stover yield and biological yield
significantly increased with application of 40 kg S ha-1 over 20 kg S ha-1 and no
sulphur. Further increase in sulphur level did not produce significant variation. The
sulphur levels failed to record significant variation in plant population at 25 DAS and
at harvest and harvest index.
Significantly higher P content in seed and S content of seed and stover were
recorded by the application of 60 kg S ha-1 over 40, 20 kg S ha-1 and no sulphur and highest P content in stover recorded by application of 40 kg S ha-1. N content in seed
and stover recorded highest by application of 20 kg S ha-1. Maximum N uptake by
seed recorded by 20 kg S ha-1 and in stover by application of 40 kg S ha-1. Application
of 40 kg S ha-1 significantly improved uptake of S by seed and stover and P uptake by
stover over 20 kg S ha-1 and no sulphur Highest P uptake by seed recorded by
application of 60 kg S ha-1. Chlorophyll content at 60 DAS significantly increased
with application of 40 kg S ha-1 over application of 20 kg S ha-1 and no sulphur.
Significant increase was registered in oil content of seed under the application of 40
kg S ha-1 in comparison to 20 kg S ha-1 and no sulphur ha-1. After harvest of crop,
significant highest available S content retained in soil was under plots fertilized with
40 kg S ha-1 over 20 kg S ha-1 and no sulphur. Application of 40 kg S ha-1 proved
economically beneficial as it recorded significantly higher net returns (` 59099 ha-1)
and B:C (3.20) over 20 kg S ha-1 and no sulphur but statistically at par with 60 kg S
ha-1.
Description
Effect of sulphur on productivity of Indian mustard [(Brassica juncea (L.) Czern and Coss.)] genotypes
Keywords
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Citation
Neha and Dashora