Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
T4-31P-1299
Effect of Integrated Nutrient Management on System Yield, Sustainable Yield
Index and Soil Properties in Maize-Based Cropping System
Bikram Borkotoki, Palakshi Bora, Pallab Kumar Sarma, Nikhita Kakati, Nupur Kalita,
Nikhilesh Baruah, Prasanta Neog, Rekhashree Kalita, Arunjyoti Sonowal and
Buddha Bora
All India Coordinated Research Project for Dryland Agriculture, BN College of Agriculture, Assam
Agricultural University
Indian agriculture remains predominantly rainfed, covering about 60% of the country's net sown
area and 40% of the total food production (Agri Odisha,2022). These high-potential rainfed areas
provide us with opportunities for faster agricultural growth than irrigated areas that have reached
a plateau (Agricoop,2022). Therefore, a rainfed permanent manurial trial was conducted in the
upland situation at the Biswanath Chariali Center of the All India Coordinated Research Project
on Dry Land Agriculture (AICRPDA), India, situated in the North Bank Plain Zone (NBPZ) of
Assam in Maize-Green gram-Rajmah cropping sequence with the specific objectives of
identifying the suitable combination of inorganic and organic sources of nutrients for sustainable
cropping system and soil health management in rainfed upland situations of Assam.
Methodology
The experiment was conducted with the following treatments in RBD during 2015-16 to 2019-20
having a gap period during 2017-18 with three replications at the experimental farm of
AICRPDA (26°43'27"N and 93°08'32"E, Elevation 80 m above MSL), Biswanath Chariali
Centre, Assam which an acidic upland sandy loam soil under the soil odder Inceptisols. Total
rainfall in the growing season of the crops (Maize-Green gram-Rajmah) were 2071.4, 2111.4,
1877.8 and 1671.6 mm in 2015-16, 2016-17,2018-19 and 2019-20, respectively. The treatments
are T1: Control, T2: 100%Recommended dose of fertilizer (RDF), T3: 75% RDF (inorganic) + 3 t
ha -1 Vermicompost* T4: 75% RDF (inorganic) + 1 t ha -1 vermicompost* , T5: 75% RDF
(inorganic) + in situ Sesbania aculeata T6: 50% RDF (inorganic) + 3 t ha -1 vermicompost*, T7:
50% RDF (inorganic) + 1 t ha -1 vermicompost*, T8: 50% RDF (inorganic) + in situ Sesbania
aculeata, T9: 3 t ha -1 vermicompost, T10: 1 t ha -1 vermicompost and T11: In situ Sesbania
aculeata. (* In each crop)
The first crop, Maize (Var. Hybrid-101), was sown in April and harvested within the first week
of August. The second crop, Greengram (var. SG-1), was sown before mid-September and
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
513 | Page