RÉSUMÉ
Guava (Psidium guajava) is an important tropical fruit crop of India and is known as “apple of the tropics”. It is grown and utilized as an important fruit in tropical countries like India, Indonesia, Pakistan, Bangladesh and South America. Among the biotic and abiotic diseases of guava, guava infected by scab disease [Pestalotiopsis psidii (Pat.) Mordue] is an economically important and reported average yield losses in the range of 12-18%. An experiment was conducted during 2023 at Horticulture garden, Main Agricultural Research Station, University of Agricultural Sciences, Raichur during 2023 to understand the influence of various weather parameters on the guava scab disease development. The results revealed that, irrespective of the varieties, interaction among maximum temperature, minimum temperature, maximum relative humidity, minimum relative humidity, rainy days and rainfall showed significant positive correlation with guava scab disease. And the incidence and severity of guava scab was found to be 23.21, 56.00 (Allahabad Safed), 32.45, 68.50 (Lucknow 49) and 85.00, 74.51 (Arka Kiran) respectively.
RÉSUMÉ
The present investigation was carried out at New Orchard, Main Agricultural Research Station, UAS, Raichur, during late Kharif 2021-22 using thirty-one genotypes and laid out in Randomized Block Design (RBD) with three replications. The result of the study revealed that, there was significant differences (p < 0.05) among the genotypes for all the traits studied. Genotype OPL-2127 recorded the highest plant height (130.69 cm), stem girth (20.45 mm), number of leaves per plant (27.29), leaf area index (3.62), number of nodes per plant (16.04), chlorophyll content (64.26 SPAD readings), fruit length (18.69 cm), number of fruits per plant (16.10), harvesting period (63.50 days), fruit yield per plant (293.53 g), fruit yield per hectare (16.4 t) and it is found to be superior over the other okra genotypes under the study. The highest fruit girth (41.36 mm) and ten fruits weight (230.10 g) was noted in the genotypes OPL-2108 and OPL-2125, respectively. The genotypes OPL-2102 and OPL-2119 recorded the minimum number of days for first flower appearance (34.50) and days to 50 per cent flowering (38.00), respectively which indicates the earliness of the genotypes. OPL-2023 recorded the highest shelf-life (5.50 days) and fibre content (16.09%).