scholarly journals Agronomic Biofortification through Integrated Nutrient Management on Maize (Zea mays L.) Hybrids

Author(s):  
R. Augustine ◽  
V. Imayavaramban

Background: Supplement of balanced nutrition is required for the growth and development of crops and humans, particularly essential amino acids, vitamins and minerals. The application of mineral micronutrient fertilizers to soil or plant leaves to increase micronutrient content in edible parts of crop. Therefore, this study is focused to evaluate the effect of agronomic biofortification with different nutrient levels on maize. Methods: A field experiment was conducted on sandy clayey loam soil during the Rabi season of 2020-21 Perambalur, Tamil Nadu to study the effect of agronomic biofortification through integrated nutrient management for improving maize (Zea mays L.) yield and quality under Cauvery delta condition. Two hybrids in main-plots both, QPM and non-QPM were sown by direct method on ridges at a spacing of 60 x 20 cm under split plot design (SPD) with 6 treatments of nutrient management in sub-plot combination under three replications. Result: The results revealed that the nutrient level treatments containing 50% RDF through NPK + 50% RDF through FYM with Fe and Zn as foliar application @0.5% conc led to highest growth and yield attributes, grain yield (8.52 tha-1) and stover yield (10.35 tha-1) and also resulted in maximum crude protein content (14.93%), starch content (63.85 mg g-1), Fe (36.25 mg kg-1) and Zn (29.35 mg kg-1) in maize grain. It was observed that Agronomic biofortification through integrated nutrient management enhanced the vegetative growth and yield components of non-QPM hybrid, whereas it improved the grain quality content of the QPM hybrid.

2021 ◽  
Vol 13 (1) ◽  
pp. 278-286
Author(s):  
Augustine R. ◽  
D. Kalyanasundaram

Agronomic biofortification increases the concentration of target mineral in edible portions of crops by the use of mineral fertilizers to increase dietary intake of target minerals. Among these iron and zinc deficiencies in human nutrition are noticed in countries where maize is the staple food. The objective of this study was to evaluate agronomic biofortification performance in association with Integrated Nutrient Management in maize (Zea mays .L). The study was conducted under field conditions in Chinnakandiankuppam village, Vriddhachalam Taluk, in the North-eastern region of Tamil Nadu state, India of Kharif 2020 season. Two hybrids in main plots (M1 – Non biofortified and M2 – Biofortified) were combined with six treatments in sub-plots (100 % RDF through NPK (S1), 100 % RDF through FYM (S2), 50% RDF through NPK + 50% through FYM (S3) as soil application, S1+ Zinc + Iron (S4), S2 +Zinc + Iron (S5) and S3 + Zinc + Iron (S6) as foliar application with evaluations were carried out in wet season period of the year. Application of 50 percent RDF through NPK + 50 percent RDF through FYM with Fe, Zn, foliar applications (S6) was the most efficient agronomic biofortification practice for growth attributes, yield and yield attributes, nutrient uptake, and quality parameters for the maize cropping system under the irrigated condition of the northeastern zone of Tamilnadu State, India. 


Author(s):  
S. Nantha Kumar ◽  
Mhaddalkar Tejas Vijay Vidhya ◽  
K. Rathika

Background: An experiment on “Effect of Integrated Nutrient Management on Growth, Yield Attributes and Economics of Spiny Brinjal (Solanum melongina L.) var. VRM (Br)-1” were conducted at Adhiparasakthi Agricultural College farm, Vellore District, Tamil Nadu. Methods: Eleven treatments of integrated nutrient management viz., T1-RDF of N:P:K (100:50:30 kg/ha.), T2– FYM (25 t/ ha.), T3- Humic acid (20 kg/ha.), T4- RDF of N:P:K (100:50:30 kg/ha.) +FYM @25 t/ ha, T5- Humic acid (20 kg/ha.) + RDF of N:P:K (100:50:30 kg/ha.), T6- Azospirillum (2 kg/ha.), T7- Phosphobacteria (2 kg/ha.), T8- Azospirillum (2 kg/ha.) + Phosphobacteria (2 kg/ha.), T9 – 75% RDF of N (75 kg/ha.) + 100% RDF of P&K (50:30 kg/ha.) + Azospirillum (2 kg/ha.), T10 - 75% RDF of P (37.5 kg/ha.) + 100% RDF of N&K (100:30 kg/ha.) + Phosphobacteria (2 kg/ha.) and T11 - 75% RDF of N & P (75:37.5 kg/ha.) + 100% RDF of K (30 kg/ha.) + Azospirillum (2 kg/ha.) + Phosphobacteria (kg/ha.) replicated thrice in Randomised block design. Results: The various treatments of integrated nutrient managementin spiny brinjalclearly showed that growth and yield attributes were high in T11.The economic assessment of different treatments revealed that maximum net profit Rs.2,16,570/ha.with benefit cost ratio (2.60) was also recorded in treatment T11 75% RDF of N & P (75:37.5 kg/ha.) + 100% RDF of K (30 kg/ha.) + Azospirillum(2 kg/ha.) + Phosphobacteria (kg/ha.).


Author(s):  
C.N. Iniya Ponmozhi ◽  
Rabindra Kumar ◽  
Yasin Abrar Baba ◽  
Ganta Mallikarjuna Rao

Author(s):  
D.H. Roopashree ◽  
Naga raju ◽  
Y.M. Ramesha ◽  
T. Bhagyalakshmi ◽  
S. Raghavendra

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