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RESPONSE OF SAFFLOWER (Carthamus tinctorius L.) TO APPLICATION OF NITROGEN AND Azospirillum INOCULATION

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Title RESPONSE OF SAFFLOWER (Carthamus tinctorius L.) TO APPLICATION OF NITROGEN AND Azospirillum INOCULATION
 
Creator PAPI REDDY, CH
 
Contributor SWARAJYA LAKSHMI, G
 
Subject RESPONSE, SAFFLOWER, APPLICATION, NITROGEN, INOCULATION
 
Description A field experiment was conducted during rabi 1989-
90 at Student's Farm, College of Agriculture, Rajendranagar,
Hyderabad on a sandy loam soil with safflower (Carthamus
tinctorius L.) var Manjira to study the response to application
of nitrogen and Azospirillum inoculation on growth parameters,
yield contributing characters, contents of oil and
protein, yield of seed, stalk and oil. The uptake of N, P
and K by the crop and changes in soil fertility were also
studied. The experiment comprises following _1j_reatments, withou!_
1N (T 1), basal appl!_']_ations of 20 kg N ~f (T2), 40 kg N
ha tT :Jr 60 kg N ha (T l), 10 kg N ha as basal pl~s 10
kg N her as foliar SP!"fY at 60 DAS (T ) , 20 kg N ha as
basal plus 20 kg N ha as foliar spra'J> in two equal splits
at 60 DAS a!Yf 90 DAS (T6), Azospirillum inoculation only (T
7
),
20 kg N ha as basal plus Azospirillum inoculation (T a>, 40
kg N ha 1 as basal plus Azospirillum inoculation (T9 ) and 60
kg N ha as basal plus Azospirillum inoculation (T
0
). The
plant height and drymatter production at 30, 60 and 90 DAS
and plant height, seed and stalk yield at the time of harvest
were recorded. Number of branches and flower heads per
plant at 90 DAS and number of seeds per flower head and
hundred seed weight at harvest were also recorded. The content
and yield of oil and protein were determined. The plant
samples collected at different stages, seed and stalk at harvest
were analysed for contents and uptake of N, P and K.
xii
The soil samples collected after harvest were analysed for
available N, P and K to study the changes in soil fertility.
Increased levels of N application significantly increased the
plant height, drymatter production, number of branches, number
of total and filled flower heads per plant, number of seeds
per flower head, seed weight, yield of seed, oil and stalk
and uptake of N, P and K at different stages of crop growth.
The highest plant height, drymatter production, number of
branches per plant and stalk yield were recorded by T 1._ which
was on par with T f\. The highest number of total anct filled
flower heads per pfant, seed and oil yield, protein content,
uptake of N, P and K were recorded by the treatment T 6 and
was on par with T L... No significant difference in terms of
seed and oil yield ~Jetween T and T was recorded. Application
of N slightly decreased the oh content. The lowest
yield contributing characters were recorded by T
1
. There was
profound response to Azospirillum inoculation in T
2
and T and were on par with T_ 8 2 and T_1 respectively. Maximum rate
of uptake of N, P and K" were fbund between 60 and 90 DAS.
There was depletion in soil major nutrients after the growth
of the crop when compared to initial soil fertility level.
Foliar application of 20 kg N ha -1_
1
in two equal
splits at 60 and 90 DAS along with 20 kg N ha as basal can
be recommended to get profitable yields for safflower in sandy
loam soil. Azospirillum inoculation to _Safflower can be recommended
incombination with 20 kg N ha as basal applic_B_ttion
as it was on par with basal application of 40 kg N ha _1 in terms of yield of seed and oil, thereby saving 20 kg N ha
 
Date 2016-08-19T13:39:39Z
2016-08-19T13:39:39Z
1990
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73019
 
Language en
 
Relation D3427;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.