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IRRIGATION AND NITROGEN MANAGEMENT IN PALMAROSA

KrishiKosh

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Field Value
 
Title IRRIGATION AND NITROGEN MANAGEMENT IN PALMAROSA
 
Creator TAKANKHAR, VILAS G.
 
Contributor PATIL, R.G.
 
Subject dna, topping, vegetables, diseases, protein products, livestock, storage structures, planting
 
Description In present investigation one each of field and pot experiment was
conducted during the year 2004-2005. A field experiment with 16
treatment combinations consisting of four levels of irrigation (0.4, 0.6,
0.8 and 1.0 IW/CPE ratio) at 60 mm depth and four levels of N (0, 50, 100
and 150 kg N/ha/yr) was conducted in split plot design with four
replications at Soil and Water Management Farm, Navsari Agricultural
University, Navsari. Apart from this, a pot experiment consisting of two
varieties (V1 : PRC-1 and V2 :ODP-1) and six levels of irrigation water
salinity (S1: BAW, S2: 2, S3: 4, S4: 8, S5: 12 and S6: 16 dS/m.) was also
conducted in FCRD with three repetitions in net house of Soil and Water
Management Research Unit, Navsari Agricultural University, Navsari. In
all three cuttings were taken during the course of field as well as pot
experiments.
- 34 -
The results of field study indicated that the growth, herbage yield,
oil yield and nutrient uptake by palmarosa were significantly influenced
by irrigation and N levels. Among the four levels of irrigation, the
treatment 0.6 IW/CPE ratio recorded significantly higher number of
tillers per clump (61.6), taller plants (192.3 cm) and longer inflorescence
(47.2 cm) in palmarosa. Similarly, significantly higher herbage (58.2
t/ha/yr), dry matter (25.2 t/ha/yr) and essential oil yield (279.7 kg/ha/yr)
were also recorded with the same irrigation level. The results further
revealed that the uptake of most of the nutrients by palmarosa was also
higher with this treatment. Among the soil properties, only soluble salt
content in soil was tended to increase with increase in level of irrigation
from 0.4 to 1.0 IW/CPE ratio. Another property i.e. organic carbon
content in soil was also higher with 0.6 IW/CPE ratio as compared to the
remaining levels. The water use efficiency in palmarosa was higher at 0.4
(81 kg/ha mm) and 0.6 (65 kg/ha mm) IW/CPE ratios. As results of this,
higher net return of Rs. 86249.00/ha and BCR of 1:1.6 were recorded
with 0.6 IW/CPE ratio.
Among the different N levels, application of 100 kg N/ha/yr
resulted in to higher number of tillers, taller plants and longer
inflorescence as compared to lower levels of N. This increase in growth
parameters of palmarosa due to N100 resulted in to higher herbage, dry
matter and essential oil yields over rest of the treatments. An increase in
oil yield under N100 was of the order of 64, 21 and 3.5 per cent over N0,
N50 and N150, respectively. In most of the cases, concentration of
nutrients in palmarosa was not affected by N levels. However, uptake of
all the nutrients by palmarosa was significantly higher with N100 in
comparison to rest of the treatments. Application of 100 kg N/ha/yr
- 35 -
recorded more net profit (Rs. 95744.00/ha) and BCR (1:1.7) than rest of
the N levels. The soil properties determined after harvest of palmarosa
crop did not vary significantly due to N level except organic carbon
content which showed increasing trend with increase in N rate.
The results of pot study revealed that, the palmarosa variety PRC1
performed better than the ODP-1 in respect of all the growth and yield
parameters. Significantly higher number of tillers, taller plants and
longer inflorescence were observed with PRC-1 as compared to ODP-1.
Herbage, dry matter and oil yields of PRC-1 were also more by 14.3, 16.5
and 21.2 per cent, respectively than ODP-1. Palmarosa variety PRC-1
showed superiority in respect of nutrient uptake through shoot and root
as well as higher accumulation of Na in root than ODP-1. The results
further revealed that the varieties tested could not alter the soil
properties conspicuously.
Irrigation water salinity significantly influenced all the growth
parameters, yield, uptake and soil properties. The results indicated that
the use of saline water up to 8 dS/m did not show much reduction in
number of tillers, plant height and length of inflorescence at first cutting
in comparison to lower levels of salinity. However, increase in water
salinity above 8 dS/m. resulted in drastic reduction of these properties.
Herbage, dry matter (shoot and root) and essential oil yield were not
reduced significantly even up to irrigation water salinity level of 8 dS/m
at first cutting and up to 4 dS/m at second cutting, further increase in
level of salinity decreased the yield considerably.
- 36 -
The uptake of N, P, K, Ca, Mg, N, Fe, Mn and Zn by shoot and root
was higher with lower salinity levels (up to S3 level) and decreased with
increase in level of salinity of irrigation water.
With respect to soil properties the results indicated that the use of
diluted sea water increased the salinity of soil, exchangeable cations
(Na+, K+ and Mg++) and availability of P2O5 , K2O and Fe in soil and
decreased the concentration of exchangeable Ca++ and availability of N
and Zn in soil. The ESP of the soil was found to increase with increase in
salinity of irrigation water at all the cuttings of palmarosa.
The results of present studies proved that palmarosa is
remunerative crop under South Gujarat conditions. Similarly, it can
tolerate irrigation water salinity up to 4.0 dS/m without adversely
affecting herbage yield.
 
Date 2016-03-10T08:38:41Z
2016-03-10T08:38:41Z
2008-04
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/65030
 
Language en
 
Format application/pdf
 
Publisher Navsari Agricultural University, Navsari