Vol. 12, Issue 5 (2023)

Author(s):
KS Nandini, V Sumathi, C Nagamani, AR Nirmal Kumar and G Karuna Sagar

Abstract:
During the 2020 rabi, a field experiment titled "Nutrient Management in Sweet Corn based Vegetable Intercropping Systems" was conducted on the sandy clay loam soils of the wetland farm of S.V. Agricultural College, Tirupati, Andhra Pradesh. The experiment was designed with a split plot and replicated thrice. Main plots consisted of three intercropping systems viz., sweet corn + knol khol (I₁), sweet corn + radish (I₂) and sweet corn + onion (I₃) and sub plots with four nutrient levels viz., 100% RDF to sweet corn alone (N₁), 100% RDF to sweet corn + 75% RDF to inter crop (N₂), 100% RDF to sweet corn + 50% RDF to inter crop (N₃) and 100% RDF to sweet corn + 25% RDF to inter crop (N₄). All three intercrops performed better in terms of plant height, dry matter production and light interception, at all stages of observation with application of 100% RDF to sweet corn + 75% RDF to inter crop (N₂) followed by 100% RDF to sweet corn + 50% RDF to intercrop (N₃), 100% RDF to sweet corn + 25% RDF to intercrop (N₄) and 100% RDF to sweet corn alone (N₁), in order of descent. All intercrop yields was higher with application of 100% RDF to sweet corn + 75% RDF to intercrop (N₂) followed by 100% RDF to sweet corn + 50% RDF to intercrop (N₃), 100% RDF to sweet corn + 25% RDF to intercrop (N₄) and 100% RDF to sweet corn alone (N₁).