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Effect of nitrogen and biofertilizers on growth of cabbage (Brassica oleracea var. capitata
L.) var. Pride of India
Lalu Prasad Yadav, Kavita A. and I.B. Maurya
Department of Vegetable Science, College of Horticulture & Forestry, Jhalawar (Rajasthan).
Email : yadavlaluprasad682@gmail.com
ABSTRACT
A field experiment was conducted to study of “Effect of nitrogen and biofertilizers on growth of cabbage (Brassica
oleracea var. capitata L.) var. Pride of India” during the Rabi season of 2010-11 at Department of Vegetable Science,
College of Horticulture & Forestry, Jhalawar.The experiment consist of 17 treatment viz., four levels of nitrogen (control,
100 kg, 125 kg and 150 kg) and three doses of biofertilizers (Azotobacter, Azospirillium and PSB) in combination with
nitrogen levels and one is absolute control was laid out in simple RBD with three replications. The treatment T16 (150 k g N
+ PSB) was recorded maximum plant height (24.64 cm), plant spread(42.87 cm), number of open leaves (20.67), leaf area
(247.43 cm2), maximum days taken to head maturity (110.00), diameter of stem (17.51mm), yield of head per hectare (432.92
q ha-1). However, it was statistically at par with 150 kg N + Azospirillium and 150 kg N + Azotobacter inoculation.
KEY WORDS: Growth, Yield, Nitrogen, Biofertilizers, Cabbage
INTRODUCTION
Cabbage (Brassica oleracea var. capitata L.) is the most
important member of genus Brassica grown in the world. It neu-
tralizes acidity, improves digestion and appetite. Nitrogen is a
constituent of several macro and micro molecules including
amino acid and is found to be associated with carbohydrates
utilization and protein bio-synthesis. The deficiency of nitrogen
leads to chlorosis, poor vegetative growth, reduced yield and
quality of leafy vegetables (Singh, 1989). Biofertilizers include
a range of nitrogen fixer’s viz., Rhizobium, Azotobacter,
Azospirillium, Blue Green Algae and Azolla. Out of these the
importance of Azotobacter and Azospirillium has been well rec-
ognized for vegetable crops (Kachari e t al ., 2009) and there are
several reports to show the benefits of nitrogen fixing through
Azotobacter and Azospirillium. In inoculated plants the fixing of
atmospheric nitrogen and its effectiveness increases with the
addition of nitrogen at the lower level (Subbiah, 1991 and
Wange et al., 1995). Azospirillium is ubiquitous rhizosphere
bacterium, represents the main group of microaerophilic free
living/associative nitrogen fixing bacteria. They are isolated
from the rhizosphere of many grasses and cereals all over
world and their role on plant growth and yield have been well
established. Azospirillium are also known as plant growth pro-
moting bacteria. The stimulatory effect exerted by Azospirillium
has been attributed to several mechanisms including secretion
of phytohormons, biological nitrogen fixation, and enhancement
of mineral uptake by plants. Besides these, Phosphate Solubi-
lizing Bacteria (PSB) increases phosphate level in soil (Singh,
2008). Consistent and indiscriminate use of chemical fertilizer
has caused serious damage to the soil and ecology. Also high
yield of vegetable can not be realized only with use of organic
and biological origin products. A considerable data were gener-
ated recently to show that the produce obtained from the appli-
cation of Biofertilizers is nutritionally superior with good taste,
lusture, keeping quality etc. Therefore, a judicious combination
strategy of using chemical fertilizers and Biofertilizers may be
helpful in increasing vegetable productivity.
MATERIALS AND METHODS
The experiment was conducted at Department of Veg-
etable Science, College of Horticulture and Forestry,
Jhalrapatan city, Jhalawar. Jhalawar is situated between 23045’
20" and 24052’ 17" North latitudes and 75027’ 35" and 76056’46"
East longitudes covering an area of 6322.35 Km2. Jhalawar dis-
trict falls under sub-humid South Eastern Plains under agro-
climatic zone V. The climate of Jhalawar is typically sub-humid
and characterized by extremes of temperature both in summer
and winter with high rainfall and moderate relative humidity. The
soil of the experimental field was black cotton, pH 6.8, clay,
and loam in texture, normal in reaction with medium in respect
to nitrogen, phosphorus and potassium.
The experiment consist of 17 treatment viz., four levels of
nitrogen (control, 100 kg, 125 kg and 150 kg) and three doses of
biofertilizers (Azotobacter, Azospirillium and PSB) in combina-
tion with nitrogen levels and one is absolute control was laid out
in simple RBD with three replications. The treatments were T0 -
Absolute control, T1 – control (applied RDF of P & K), T2 - 1 00 k g
N + No Biofertilizer, T3 - 125 kg N + No Biofertilizer, T4 - 150 kg
N + No Biofertilizer,T5 - 0 kg N + Azotobacter, T6- 100 kg N +
Azotobacter, T
7- 125 kg N + Azotobacter, T8- 150 kg N +
Azotobacter, T9 – 0 kg N + Azospirillium, T10 – 100 kg N +
Azospirillium, T11 – 125 kg N + Azospirillium, T12 – 150 kg N +
Azospirillium, T13– 0 kg N + PSB, T 14– 0 kg N + PSB, T 15– 0 kg
N + PSB, and T16– 0 kg N + PSB. Plots of 2.7 × 1.8 m size
were prepared. The distance between plant to plant as well as
row to row was kept at 45 x 45 cm. Thus 24 plants were accom-
modated in each plot. Five plants were randomly selected from
each plot and tagged. The following observations were recorded
on these plants. Plant height (cm), plant spread (cm), number
of open leaves per plant, leaf area (cm2), number of days taken
to head maturity, diameter of stem (mm) and yield of head/ha
(q.).
Progressive Horticulture Vol. 44(2):318-320, 2012
Table 1: Effect of nitrogen and biofertilizers on growth of the cabbage (Brassica oleracea var. capitata L. ) var. Pride of India
Treatment no Plant Plant number of leaf area days taken to diameter of yield of head
height (cm) spread (cm) open leaves (cm2) head maturity stem (mm) per hectare (q.)
T012.91 26.92 11.47 142.36 84.67 9.36 213.99
T114.25 30.67 12.27 146.24 85.00 9.57 228.80
T218.47 38.39 15.80 210.22 89.33 13.95 302.88
T320.18 40.10 18.47 225.65 94.67 14.49 320.98
T422.13 41.73 19.07 237.75 102.00 16.13 376.95
T515.80 30.19 12.87 147.70 88.67 9.74 232.10
T619.52 39.55 16.13 215.17 96.00 14.88 332.51
T721.09 41.53 19.00 226.83 99.67 15.36 391.54
T822.99 42.15 19.87 239.12 104.67 16.53 416.46
T915.55 30.91 12.80 148.60 88.33 9.87 240.32
T10 19.63 38.39 16.20 216.47 94.33 14.77 334.15
T11 21.77 41.27 18.53 228.65 100.33 15.35 393.41
T12 23.86 42.54 20.40 239.50 105.00 16.56 418.10
T13 16.26 30.85 12.20 148.51 88.67 9.81 243.62
T14 19.35 39.31 16.53 228.35 95.67 14.61 337.45
T15 21.55 41.39 18.27 235.61 101.33 15.60 398.36
T16 24.64 42.87 20.67 247.43 110.00 17.51 432.92
S.Em+ 0.917 1.195 0.612 6.126 3.531 0.503 9.683
CD at 5 % 2.642 3.442 1.762 17.64 10.172 1.450 27.892
RESULTS AND DISCUSSION
The results of present investigation showed that applica-
tion of nitrogen and biofertilizers significantly increased that the
maximum value of growth parameters i.e. plant height (24.64
cm), plant spread (42.87 cm), number of open leaves (20.67),
leaf area (247.43 cm2), maximum days taken to head maturity
(110.00), diameter of stem (17.51mm) and yield of head per
hectare (432.92 q ha-1) was recorded under treatment T16 ( 15 0
kg N + PSB) as compared to absolute control and control
(Table 1). These results are in conformity with the findings of
Kalabandi et al. (2007) in cabbage, Jana and Mukhopadhyay
(2001), Singh and Singh (2005), Singh (2008) and Kachari and
Korla (2009) in cauliflower. This could be due to increased level
of nitrogen and biofertilizers.
Thus increase on above growth and yield of cabbage by the
application of nitrogen and biofertilizers might be due to avail-
ability of sufficient amount of nitrogen through direct addition
and solubility of natural status of nutrient present in soil and
different increasing nitrogen levels favored the large uptake of
nutrients and effective utilization of utilized nutrients for in-
creased metabolism and synthesis of carbohydrates, greater
vegetative growth and subsequent partitioning and transloca-
tion from leaf (source) to the head (sink) and also release of
energy rich organic compounds by the biofertilizers which ulti-
mately increased auxin activities, growth and activity of micro-
bial saprophytes and phosphates activity which ultimately influ-
enced the growth and yield. Kadlag et al. (2007) in tomato,
Kachari and Korla (2009) in cauliflower and Chatterjee (2010) in
cabbage have also reported similar finding
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Received on 06 August, 2011 and accepted on 14 March, 2012
Progressive Horticulture 320