Vol. 12, Issue 9 (2023)

Author(s):
SR Pawar, NB Mehetre and AV Jadhav

Abstract:
At the Collage Agronomy farm of the Bansilal Amritlal College of Agriculture, Anand Agricultural University, Anand, a field experiment was carried out to examine the bio-efficacy of plant leaf extracts against the aphid, Macrosiphoniella sanborni. To protect the chrysanthemum crop from aphids, neem seed kernel suspension (NSKS) at 5%, tobacco decoction at 2%, and neem leaf extract (NLE) at 10% all performed better. The 10% leaf extracts of Ardusa, Naffatia, Karenj, and Jatropha were shown to be ineffective against this pest. The highest yield of flowers was produced by the crude NSKS extract (17.73 t/ha), followed by the tobacco decoction (15.70) and the neem leaf extract (12.90). Tobacco decoction and Neem leaf extracts with yields of 61.30, 58.38, and 53.04% may be prevented, respectively, with the spray application of NSKS. On the other hand, 10% leaf extracts of Naffatia, Karenj, Jatropha, and Ardusa recorded 5.02 to 9.2 t/ha of chrysanthemum flower production, of which 30.96 to 45.17% flower output may be avoided.