ABSTRACT
An experiment was conducted to evaluate the performance ginger genotypes under coconut ecosystem at Coconut Research Station, Aliyar Nagar, Tamil Nadu Agricultural University, and Coimbatore during the period from 2017- 18and 2018-19. The experiment was laid out in Randomized Block Design (RBD) with three replications and the treatments included viz., Rejetha, Ashwathy, Maran, Karthika, GCP 49, IISR 1 (GB), Mahima, ACC 578, Athira, ACC 581, Rio de Janeiro, Varadha, Thadimaram and local Gudalore. data were recorded from five randomly selected plants on plant height, shoot diameter, number of shoots, number of leaves, leaf length, leaf breadth, yield per plot and hectare and was analyzed using analysis of variance. Results showed the highest plant height (92.70 cm),shoot diameter (3.27cm), no. of leaves (30), leaf length (27.89 cm) registered in Thadimaram, whereas the highest no. of shoots (8.10), leaf width (3.78 cm), yield per plot (13.64 kg) and yield (24.80t/ha) was recorded in Athira followed by Rejethawhich recorded the highest yield per plot (12.15 kg) and yield (22.09t/ha) during 2017-18.During 2018-19the highest plant height (99.90 cm),shoot diameter (3.60cm), leaf length (29.10 cm) was registered in Thadimaram, whereas the highest no. of shoots (8.30), no. of leaves (36.0), leaf width (3.90 cm), yield per plot (14.20 kg) and yield(25.50 t/ha) was recorded in Athira followed by Rejethawhich recorded the highest yield per plot (12.70kg) and yield (22.80t/ha). Athira and Rejetha genotypes outperformed the other genotypes and could be considered as the most suitable genotypes for cultivation under the coconut ecosystems of Coimbatore district.
ABSTRACT
In recent years, Hass avocados (Persea americana Mill.) have become more widely cultivated in Colombia. One of the difficulties facing the nation is boosting orchard output by ensuring graft plants have the best agronomic, genetic, and phytosanitary criteria. In this study, the growth and development of avocado rootstocks derived from seeds of various weight ranges will be monitored for 90 days. Four weights of avocado seeds (S1, S2, S3, S4) (30–40 g, 40–50 g, 50–60 g, and 60-70 g) and four scion maturity of (D1, D2, D3, D4) (60 days old, 70 days old, 80 days old, 90 days old were used as treatments in a factorial completely randomized experimental design. The outcome showed that the best germination rate of 75% for S4 and the highest survival percentage (94.98%) for S4D4. After 90th DAG the maximum number of new shoots per plant (5.75), number of leaves/plants (18.15), leaf area (20.83 cm2), and carbohydrate content (6.57%) were reported. Based on the results of the experiment, it was determined that the optimum method for propagating avocados was softwood grafting using 60–70 g seed size (rootstock) and 90-day-old scion. These plants had better vigor and faster germination rates, all of which could reduce the length of time spent in the nursery while still ensuring the quality of the material, which is influenced by improved seedling growth.