EFFECT OF NANO-FERTILIZERS ON SOIL HEALTH AND PRODUCTIVITY OF NECTARINE (Prunus persica cv. Silver King
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Date
2024-01-23
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UHF,NAUNI
Abstract
Two separate research experiments were conducted to study the “Effect of nano-fertilizers on soil health
and productivity of Nectarine (Prunus persica cv. Silver King)” for two consecutive years 2021-2022 and 2022-
2023 at Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.). Both of the experiments were
laid out in Randomised Block Design with four replications. Experiment first was conducted on 10 years old
nectarine plants with the spacing of 4.5m x 4.5m at the experimental farm of Department of Soil Science and Water
management where six treatment combinations along with of nano urea were tested. The treatments comprised of T1-
Recommended dose of nutrients (RDN), T2- 100% N through nano urea, T3- 80% N through nano urea+20% N
through neem coated urea, T4- 60% N through nano urea + 40% N through neem coated urea, T5- 40% N through
nano urea+60% N through neem coated urea, T6- absolute control. The results of study revealed that application of
60% of N through foliar spray of nano urea + 40% of N through soil application of neem coated urea (T4) perform
best in term of vegetative growth (tree height and annual extension growth), yield (28.06 kg/tree), productivity (13.83
t/ha) and quality parameter viz., TSS (13.03 oBrix), titratable acidity (0.92 %), TSS/acid ratio(14.11) of nectarine
over other treatments and also raise the B:C ratio upto 3.39. Second experiment was conducted on 12 years old
nectarine plants with the spacing of 4 m × 2 m at Model farm of the Directorate of Research and where six treatment
combinations along with of nano iron were tested. The treatments comprised of T1- Recommended dose of iron
(0.3% ferrous sulphate), T2- 100% Fe through nano iron, T3- 80% Fe through nano iron + 20% Fe through chelated
iron, T4- 60% Fe through nano iron + 40% Fe through chelated iron, T5- 40% Fe through nano iron+ 60% Fe through
chelated iron, T6- absolute control. The results of study revealed that application of 100% Fe through nano iron (T2)
perform best in term of vegetative growth (tree height and annual extension growth), yield (26.80 kg/tree),
productivity (33.49 t/ha) and quality parameter viz., TSS (12.59 oBrix), titratable acidity (0.70 %), TSS/acid ratio
(18.03) of nectarine over other treatments and also raise the B:C ratio upto 9.52. Therefore the results of the study
indicated that the application of 100% Fe through nano iron (T2) during growth stages might be helpful to increase
the fruit yield, productivity and farmer income. Thus, the results from experiment 1 and 2 revealed that the
application of 60% of N through foliar spray of nano urea + 40% of N through soil application of neem coated urea
and of 100% Fe through nano iron during different growth stages unambiguously increased the growth, yield and
quality of nectarine which in turn increased the farmers income as observed through the B: C ratio.