EFFECT OF BIOSTIMULANTS AND MICRONUTRIENT GRADE ON GROWTH, FLOWER YIELD AND QUALITY OF ROSE CV. TOP SECRET UNDER PROTECTED CONDITION 2835
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Date
2019-07
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JAU, JUNAGADH
Abstract
The present investigation on “Effect of biostimulants and micronutrient grade
on growth, flower yield and quality of rose cv. Top Secret under protected condition”
was carried out at Hi-tech Horticulture Park, Department of Horticulture, College of
Agriculture, Junagadh Agricultural University, Junagadh (Gujarat) during the year
2018. The experiment laid out in Completely Randomized Design with factorial
concept, consisting two factors with three replications and nine treatment
combinations. The treatment comprised of three different levels of Biostimulants (B)
viz., B1: Banana enrich sap 1% (10 ml/lit.), B2: Panchgavya 3% (30 ml/lit.), B3:
Humic acid 0.2% (2 ml/lit.) and three different levels of Grade of Micronutrient IV
(M) viz., M1: 0.5% grade-IV micronutrient formulation, M2: 1% grade-IV
micronutrient formulation and M3: 1.5% grade-IV micronutrient formulation.
Among the different level of Biostimulants (B), B2: Panchgavya 3% showed
significantly maximum plant height (61.12 cm), plant spread N-S (22.71 cm), plant
spread E-W (38.00 cm), number of branches per plant (5.29) and stem diameter (1.03
cm). Similar trend was also observed for the different levels of Grade of
Micronutrient IV (M). M3: 1.5% grade-IV micronutrient formulation noted
significantly maximum plant height (62.27 cm), plant spread N-S (22.89 cm), plant
spread E-W (38.50 cm), number of branches per plant (5.28) and stem diameter (1.02
cm). In case of different levels of Biostimulants (B), B2: Panchgavya 3% showed
significantly minimum days to first flower bud emergence (17.61 days) and days to
first flower opening (25.83 days), maximum number of petals per flower (52.62), number of cut flowers per plant (14.83), number of cut flowers per sq.m. (58.83) and
yield of cut flowers per ha (5.83 lakh/ha).
Similar, trend was indicated for the different levels of Grade of Micronutrient
IV (M). M3: 1.5% grade-IV micronutrient formulation noted significantly minimum
days to first flower bud emergence (17.94), days to first flower opening (26.14),
maximum number of petals per flower (52.63), number of cut flowers per plant
(15.03), number of cut flowers per sq.m. (59.93) and yield of cut flowers per ha (5.93
lakh/ha).
Among the different three levels of Biostimulants (B). B2: Panchgavya @ 3%
showed significantly maximum length of bud (2.22 cm), diameter of bud (1.63 cm),
diameter of flower (6.27 cm), vase life of cut flower (8.52 days), in situ longevity of
flower (8.73 days), fresh weight of flower (11.08 g), dry weight of flower (3.57 g) and
pedicle length of flower (24.77 cm). Similar trend was revealed for the different levels
of Grade of Micronutrient IV (M). M3: 1.5% grade-IV micronutrient formulation
noted significantly maximum length of bud (2.25 cm), diameter of bud (1.61 cm),
diameter of flower (6.53 cm), vase life of cut flower (8.59 days), in situ longevity of
flower (8.86 days), fresh weight of flower (11.06 g), dry weight of flower (3.53 g) and
pedicle length of flower (25.13 cm).
The status of available micro nutrients Fe, Mn, Zn, Cu and B (8.84, 0.94, 4.56,
7.56 and 120.33 mg/kg) maximum in leaves under the treatment B2: Panchgavya 3%
and M3: 1.5% grade-IV micronutrient formulation (8.93, 0.93, 4.74, 7.87 and 115.11
mg/kg).
Interaction between biostimulants and micronutrient grade IV was found to be
significant in respect to number of cut flowers per plant (15.27), number of cut
flowers per sq.m. (61.60) and yield of cut flowers per ha (5.90 lakh/ha) recorded in
the treatment combination of Panchgavya 3% + 1.5% grade-IV micronutrient
formulation (B2M3). As far as the relative economics of the treatment is concerned,
Panchgavya @ 3% + 1.5 % grade-IV micronutrient formulation (B2M3) was found to
be best with highest net returns and BCR of cut flower yield 14.62 Rs. lakh/ha and
1:3.19 respectively). Based on the investigation, it can be concluded that Panchgavya
@ 3% with application of 1.5% grade-IV micronutrient formulation gave best results
on growth, flower yield and quality of rose cv. Top Secret under protected condition.