G × E interaction studies under natural farming and inorganic production system in maize (Zea mays L.) Sood Raghav, Katna Gopal*, Chand Uttam, Sood V. K. CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062 *E-Mail: gkatna@gmail.com
Online Published on 22 January, 2024. Abstract A study was conducted to analyze the interaction of twelve maize genotypes with the environment for fourteen traits. The crop was grown during the kharif season of 2021 and 2022 in six different environments using two production systems, natural farming and the inorganic production system, in Palampur and Kangra using randomized block design with three replications. G × E interaction and stability analysis following AMMI model exhibited significant variation due to genotypes and environments for all the traits, indicating the presence of sufficient variability among the genotypes and environments. In contrast, G × E interaction was significant for all the traits except for number of kernel rows per cob and ear circumference (cm). Results showed that significant variation was present among the genotypes and environments. The environment had greater impact on most traits, except number of kernel rows per cob, ear circumference (cm), 100- grain weight (g), harvest index (%) and protein (%).The mean squares for the IPCA 1, IPCA 2 and IPCA 3 cumulatively contributed more than 80% of the total G × E interaction for all the traits. Overall,Girija was found to be the most stable genotype for the maximum number of traits, followed by L-315 and L-316.Girija was most stable for grain yield per plant followed by L-315, L-316 and L-318 under the inorganic production system. Bajaura Makka followed by L-315 and L-316 were stable genotypes under the natural farming production system with high grain yield per plant. Both L-315 and L-316 were found to be suitable for cultivation under both farming methods. Top Keywords Maize, AMMI, Natural farming, Natural farming vs. inorganic farming. Top |