Vol. 12, Issue 2 (2023)

Author(s):
D Manjusha, Dr. S Suryakumari, Dr. K Giridhar, Dr. AVD Dorajee Rao, Dr. V Sivakumar, Dr. DR Salomi Suneetha and Dr. P Subbaramamma

Abstract:
The present investigation entitled “Studies on the effect of metabolite elicitors on growth and yield aspects in turmeric (Curcuma longa L.) at coastal plains of Andhra Pradesh” is carried out at College of Horticulture, Dr. Y.S.R. Horticultural University, venkataramannagudem during Kharif 2017 and 2018. Two varietis viz., Mydukur and Roma were applied with the metabolite elicitors chitosan and salicylic acid in the form of seed treatment and foliar spray. Growth parameters were recorded at 180 days after transplanting (DAT) and yield was recorded at harvest i.e. 250 DAT in the variety Roma and 270 DAT in the variety Mydukur. Pooled data over two years (2017-18 & 2018-19) on growth parameters and yield revealed significant effect of varieties, application of metabolite elicitors through seed treatment and foliar application as well as their interactions at coastal plains of venkataramannagudem. The highest plant height (77.62 cm), number of leaves plant-1 (12.94), leaf length (41.68 cm), leaf width (11.42 cm), fresh weight plant-1 (327.22 g) and yield plot-1 (7.10 kg) were recorded in the variety Mydukur. Significantly superior plant height (77.38 cm), number of leaves plant-1 (13.41), leaf length (44.93 cm), leaf width (12.13 cm), number of tillers plant-1 (1.55), fresh weight plant-1 (329.22 g) and yield plot-1 (7.83 kg) were recorded in the foliar application of chitosan @ 100 ppm as the effect of metabolite elicitors through foliar application is observed superior to seed treatment. The combinations of variety Mydukur + chitosan @ 100 ppm (st), Mydukur + chitosan @ 100 ppm (fs) and chitosan @ 100 ppm (st) + chitosan @ 100 ppm (fs) recorded significantly highest growth and yield. The three-way interaction Mydukur + chitosan @ 100 ppm (st) + chitosan @ 100 ppm (fs) recorded maximum fresh weight plant-1 (396.78 g).