Vol. 11, Issue 3 (2022)

Author(s):
Indeti Venkata Siva Rama Krishna, Biswarup Mehera and Mayur

Abstract:
An experiment was carried out during Kharif season of 2021 at Crop Research Farm, Department of agronomy, SHUATS, Prayagraj U.P to study about the Effect of spacing and seaweed (Kappaphycus alvarezii) extract on yield and economics of sweet corn (Zea mays L.). The soil of the experimental field is sandy loam in texture, nearly neutral in soil reaction (Ph 7.4), the available N, P, K fertilizers is applied through inorganic fertilizers i.e UREA, SSP, MOP. The experiment consisted of nine treatments which includes 2 Spacings i.e., 45 cm x 20 cm and 60 cm x 15 cm and foliar application of seaweed extract (Kappaphycus alvarezii) whose effect is observed in sweetcorn (Syngenta Sugar -75). The experiment was laid out in Randomized Block Design with nine treatments replicated thrice. Results revealed with the treatment of Spacing 60 cm x 15 cm + 5.0% K sap recorded maximum number of cobs / plant (2.10), grains / cob (503.33), Number of seeds per row (38.76), Length of cob (16.81cm), cob yield 4.24 t/ha) and stover yield (4.78 t/ha). Higher gross returns (126663.00 INR/ha), net returns (85063.1 INR/ha), and B: C ratio (2.04) was also obtained with the application of spacing 60 cm x 15 cm + 5.0% K sap. Therefore, authors concluded that spacing 60 cm x 15 cm + 5.0% K sap can produce more cobs and will be economically effective.