EFFECT OF POTASSIUM SILICATE AND HUMIC ACID ON GROWTH AND DEVELOPMENT OF JAMUN (Syzygium cumini (L.) Skeels) cv. GOMA PRIYANKA
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Date
2024
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College of Horticulture and Forestry, Jhalawar
Abstract
A field experiment was carried out during (2021-22 and 2022-23) with the object of assessing
the effect of potassium silicate and humic acid on growth and development of Jamun (Syzygium
cumini (L.) Skeels.) cv. Goma Priyanka. Four doses of potassium silicate (KS) viz. 0, 1000,
2000, and 3000 ppm, four doses of humic acid (HA) 0, 1000, 2000 and 3000 ppm and their
combinations viz. KS (1000 ppm) + HA (1000 ppm), KS (1000 ppm) + HA (2000 ppm), KS
(1000 ppm) + HA (3000 ppm), KS (2000 ppm) + HA (1000 ppm), KS (2000 ppm) + HA (2000
ppm), KS (2000 ppm) + HA (3000 ppm), KS (3000 ppm) + HA (3000 ppm) were tried in 16
treatment combinations in factorial randomized block design.
The foliar application of potassium silicate KS3 (3000 ppm) treatment resulted in increased
plant growth attributes viz. rootstock girth, scion girth, plant height, canopy volume, canopy
spread E-W, N-S, number of nodes shoot-1, internodal length, number of leaves shoot-1, number
of shoots primary branch-1, leaf length, leaf width, leaf area, petiole length and leaf area index
of Jamun cv. Goma Priyanka plants as compared to other treatments. The foliar response of
KS3 (3000 ppm) also improve the physiological variables viz. relative water content, total
chlorophyll, membrane stability index, photosynthetic active radiation, photosynthetic rate,
stomatal conductance and relative humidity in leaves and also cause decline in proline content
of Jamun cv. Goma
Priyanka plants.
The foliar response of humic acid HA3 (3000 ppm) treatment registered relatively
better plant growth parameters viz. rootstock girth, scion girth, plant height, canopy volume,
canopy spread E-W, N-S, number of nodes shoot-1, internodal length, number of leaves shoot-
1, number of shoots primary branch-1, leaf length, leaf width, leaf area, petiole length and leaf
area index of Jamun cv. Goma Priyanka plants. The foliar application of HA3 (3000 ppm) level
improved the physiological parameters viz. relative water content, total chlorophyll, membrane
stability index, photosynthetic active radiation, photosynthetic rate, stomatal conductance and
relative humidity in leaves and also manifested decline in proline content of Jamun cv. Goma
Priyanka plants.
The interaction effect of potassium silicate and humic acid response was found
maximum in T15 treatment comprising (KS 3000ppm + HA 3000 ppm) with respect to
augmentation in plant growth parameters and physiological variables. The foliar application of
T15 treatment recorded maximum increase in plant growth parameters as well as majority of
physiological variables except proline content which was observed minimum in this treatment.