Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
that Dalleychilli under polymulching condition recorded maximum yield (20.58 q/ha) and yield
attributing characters and highest economic return BCR ratio(4.46)over open field condition
(control). Thus, Polymulching in Dalleychilli perhaps a boon for enhancing production as it also
plays ameliorate role over biotic and abiotic stress in Plants.
T4-42P-1506
A Study on Resilience of Soil Health through Fertigation and Nutrient
Management in Tomato
Minnu John 1* , M. Elayarajan 2 , G. Jayalekshmi 1 and P. S.Bhindhu 1
1 Krishi Vigyan Kendra, Kottayam, Kerala, India 686 566
2 Associate Professor, Tamil Nadu AgriculturalUniversity, Coimbatore, India 641 003
* minnu.4.john@gmail.com
Poor understanding of the soil-plant relationships has led to the mismanagement of resources,
especially fertilizers and water. This may end up in cascading effect on nature. Hence techniques
that can pose minimal threat to the environment without compromising the plant growth, yield,
and quality parameters needed to be adopted as a measure of resilience to revive the soil heath.
Tomato is a crop that responds well to fertilizers and irrigation. The drip fertigation method
which supplies nutrients to the plant roots directly through irrigation has proved to be very
significant in improving nutrient uptake which finally results in enhancement of growth and
yield of tomato crop (Ankush et al., 2017). Nutrient ratios may be optimized to bring down the
surplus application of fertilizers.
Methodology
A pot experiment was conducted at Department of Soil Science and Agricultural Chemistry,
Tamil Nadu Agricultural University, Coimbatoreduring 2020-21 with TNAU Tomato Hybrid
CO-3 as a test crop. This experiment was laid in a Completely Randomized Design with nine
treatment combinations viz., absolute control without any fertilizers, control with solid fertilizers
at the TNAU recommended dose of fertilizers, different nutrient ratios of N, P, K and N, P, K
with Ca and B, and each treatment were replicated thrice. All the treatments were given nutrient
supply through drip fertigation (except in the control treatments). The different treatments were
Solid Fertilizers @ 100% RDF (Control), 1:1:1 NPK Fertigation @ 100% RDN + Basal P
(Solid) (75% RDF), 1:1:1 NPK Fertigation @ 100% RDN, 1:2:1 NPK Fertigation @ 100%
RDN, 2:1:1 NPK Fertigation @ 100% RDN, 1:1:1 NPK Fertigation @100% RDN+Ca, 1:1:1
NPK Fertigation @ 100% RDN+B, 1:1:1NPKFertigation@100%RDN+Ca+B and Absolute
Control. Observations were made in different growth parameters like plant height, number of
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
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