Response of Different Cultivars of greengram (Vigna radiata L.) to Integrated Nutrient Management Under South Gujarat Condition
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Date
2009-07
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Agronomy Department, N. M. College of Agriculture Gujarat Agricultural University
Abstract
A field experiment was conducted during summer season
of 2011 at the College Farm, Navsari Agricultural University ,
Navsari to study the "Response of different cultivars o f greengram
(Vigna radiata L.) to integrated nutrient management under south
Gujarat condition". The soil of the experimental field was clayey in
texture having medium to poor drainage, low in available nitrogen.
medium in available phosphorus and fairly rich in available
potas sium and sulphur with 7.8 pH.
Total twenty treatment combinations co ns isting of two
varieties viz., Meha (Vil and GM 3 (V2), three levels of inorganic
fertilizer (F,: 100 per cent RDF i.e. 20-40-00 kg NPK/ha, F2 : 75 per
cent RDF and F 3: 50 per cent RDF) and three treatments of
biofertilizers (B,: rhizobium seed inoculation, B2 : Phosphate
solubilizing bacteria (PSB) seed inoculation and B3: rhizobium +
PSB seed inoculation) combine with two additional treatments (AT ,_
Meha with 100% RDF only) and AT 2 (OM 3 with 100% RDF only)
were evaluated in factorial randomized block design with factorial
concept in three replications.
Almost all the growth and yield attributes such as plant
height, number of branches, dry matter accumulation, number of
root nodules, pods per plant, seeds per pod, test weight per plant
were significantly influenced by levels of inorganic fertilizer.
Significantly higher values of all the above parameters were
recorded with 100% RDF (20-40-00 kg NPK kg/hal which were
found superior to rest of the treatments except F2 (75% RDF).
Consequently, plots receiving 100% RDF (F ,) recorded significantly
higher seed (1365 kg/hal and stover (3491 kg/hal yields as
compared to treatments F, (75% RDF) and F3 (50% RDF).
Remarkable improvement in quality , nutrient content as well as their
uptake was also observed with the treatment of 100 and 75% RDF.
Nutrient status of soil after harvest of crop was also improved with
the treatment of 100% and 75% RDF. From economic point of view,
the maximum net realization of ( 63280/ha and ( 58237/ha with
BCR of 5.29 and 5.00 were achieved with 100 and 75% RDF,
respectively, in greengram.
Various treatments of biofertilizers also produced
significant variation ill growth as well as yield attributes. The crop
Sown with dual inoculation of rhizobium and PSB showed
significant improvement in plant height, number of branches, dry
matter accumulation, number of seeds per pod, test wei ght but
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remained at par to PSB inoculation. However, significantly the
highest number of pods per plant (18.84), seed yield (1345 kg/hal
and stover yield (3545 kg/hal were obtained in the treatment B, as
compared to treatments B\ (rhizobium) and B2 (PSB). Considerable
improvement in quality, nutrient content as well as their uptake was
also noticed under dual inoculation treatment. Nutrient status of soil
after the harvest of crop was also appreciably increased by
inoculating the seed either by rhizobium and PSB alone or in
combination. With regard to • economics. dual inoculation of
rhizobium and PSB achieved higher net realization of \ 63320/ha
with BeR of 5.75 as compared to biofertilizer treatment alone.
With respect to interaction effect, it is interesting to
note that the seed yield recorded with 75 per cent RDF + dual
inoculation o f rhizobium and PSB or PSB alone were found as good
as the yield obtained with 100 per cent RDF + dual inoculation of
rhizobium and PSB, indicates 25 per cent saving of inorganic
fertilizer.
On the basis of results obtained in the present
investigation, following conclusions could be made.
• Meha is better variety of greengram for the south Gujarat
condition in summer season over cv. GM 3 .
• For getting more remunerative production of greengram, crop
•
sho uld be fertilized with 100% RDF (20-40-0 kg NPK/ha).
• Seed inoculation with rhizobium and PSB is more profitable for
greengram as compared to inoculated with either rhizobium or
PSB alone .
• Compared to treatment combinations as well as control, F ,B,
(100 % RDF with dual seed inoculation of rhizobium and PSB)
found more productive and economical which closely followed
by the treatment combination of F,B, (75% RDF with dual
inoculation of rhizobium and PSB) and F ,B, (75% RDF with
seed inoculation with PSB) indicating 25% saving of inorganic
fertilizer through use of dual inoculation of rhizobium and PSB
or PSB alone.
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Citation
RINKU DEVCHANDBHAI PATEL_53938