STUDY ON THE EFFECT OF SEED COATING AND FOLIAR SPRAY OF NANOFERTILIZERS ON SEED YIELD AND QUALITY PARAMETERS OF MAIZE (Zea mays L.)
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Date
2022
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Publisher
DRPCAU, PUSA
Abstract
In the present study, an experiment entitled “Study on the effect of seed
coating and foliar spray of nanofertilizers on seed yield and quality parameters
of maize (Zea mays L.)” was conducted at research farm of Tirhut College of
Agriculture, Dholi during Kharif season 2021. The experiment was laid out in RBD
with ten treatments viz., T1 (control-No fertilizers applied), T2 (recommended dose of
fertilizer), T3 [100% RDF + Seed coating of nano P (Phosphorus) @ 125 ml ha-1
(100% seed coating)], T4 [100% RDF + seed coating of nano Zn + Fe (Zinc + Iron) @
125 ml ha-1 (100% seed coating)], T5 [75% RDF (100% N/K with 75% P) + Seed
coating of nano P (Phosphorus) @ 125 ml ha-1 (100% seed coating)], T6 [75% RDF
(100% NPK with 75% Zn/Fe) + Seed coating of nano Zn +Fe (Zinc + Iron) @ 125 ml
ha-1 (100% seed coating)], T7 [100% RDF + seed coating of nano P (Phosphorus) @
62.5 ml ha-1 + Foliar spray of nano P (Phosphorus) @ 250 ml ha-1 (50% seed coating
+ 50% Foliar)], T8 [100% RDF + Seed coating of nano Zn + Fe (Zinc + Iron) @ 62.5
ml ha-1 + Foliar spray of nano Zn + Fe (Zinc + Iron) @ 250 ml ha-1 (50% seed coating
+ 50% Foliar)], T9 [75% RDF (100% N/K with 75% P) + Seed coating of nano P
(Phosphorus) @ 62.5 ml ha-1 + Foliar spray of nano P (Phosphorus) @ 250 ml ha-1
(50% seed coating + 50% Foliar)], T10 [75% RDF (100% NPK with 75% Zn/Fe) +
Seed coating of nano Zn + Fe (Zinc + Iron) @ 62.5 ml ha-1 + Foliar spray of nano Zn
+ Fe (Zinc + Iron) @ 250 ml ha-1 (50% seed coating + 50% Foliar)] in four
replications. Various yield-attributing characteristics were significantly improved by
the use of nano fertilizers. Maximum field emergence and plant stand establishment
was observed in treatment T8 and T9 respectively, seed yield per plot, number of cobs
per plant, thousand seed weight, ear girth, number of seeds per ear & harvest index
was found in T3. Maximum height of plant at 30 DAS as well as at harvest was
observed in treatment T7 and T5 respectively. Earlier flowering was observed in
treatment T5 for first flowering and T3 for 50% flowering. Among seed quality
parameters, germination % was maximum in T8, seedling length was found to be
highest in T4, similarly dry weight along with fresh weight of seedlings & both the
vigor indices was observed maximum in T2, T9, T4 and T3 respectively along with
minimum incidence of seed borne pathogens in the treatment T7. Treatment T8
showed the highest activity of enzymes related to antioxidant activities and seed
germination viz., peroxidase activity, polyphenol oxidase activity, amylase activity
and dehydrogenase activity.