The present investigation entitled "Assessment of different bioregulators on survival and growth of black pepper cuttings (Piper nigrum L.)." was conducted at the Department of Horticulture, College of Horticulture Dapoli, Dist. Ratnagiri during the year 2020-2021. The experiment was conducted in Randomized Block Design (RBD) with seven treatments and three replications. The treatments were T1 -Vermiwash 15%, T2 -Vermiwash 20%, T3 -Vermiwash 25%, T4 -Cattle urine 5%, T5 -Cattle urine 7.5%, T6 -Cattle urine10%, T7 -Control(no drenching). Growth parameters of black pepper cuttings viz. number of days required for initiation of sprouting, number of days required for peak sprouting, number of days required for complete sprouting, length of the shoot, number of leaves, leaf area, girth of sprout, vine length, intermodal length, number of primary roots, root length, number of nodes, dry shoot weight, dry root weight, absolute growth rate, relative growth rate were significantly influenced by bioregulators drenching. In treatment T2 (Vermiwash 20%) high survival per cent (82.67%), less days required for initiation of sprouting (20.67).

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Konkan is considered as an important mango belt of India. This belt is not only famous for the production of the king of mango ‘Alphonso’ but also for the supply of quality planting material throughout the country. Soil is the basic medium used in the nursery. Availability of quality soil for nursery is getting scared and it is a need of the hour to find out lightweight, well-aerated media for reducing transport cost and mortality. Hence field experiment was carried out to find the response of mango cv. Alphonso stone grafts in the different potting mixtures. The treatment cocopeat + leaf manure + compost (1:1:2) was recorded significant increase in plant height (129.40%), girth of grafts (38.08%), highest number of shoot (1.50), number of leaf (22.70), highest absolute growth rate (0.1483 cm/day) and relative growth rate (0.0237 cm/cm/day). Whereas, maximum leaf area (617.03 cm2) was obtained in soil + leaf manure (1:1) followed by leaf manure + cocopeat (1:3) (610.17 cm2) leaf manure + cocopeat (1:3). Maximum root length (21.97 cm) and dry weight of root (7.23g) were obtained in treatment cocopeat + leaf manure + compost (1:1:1). The economics involved for different treatments showed that cocopeat + leaf manure + compost (1:1:2) was recorded with the highest B:C (1.39) followed by Soil + Cocopeat (1:1) in stone grafting. From the above investigation, it is concluded that potting mixture had a significant effect on the growth performance and economics of mango grafts. For raising mango grafts, the media containing cocopeat along with leaf manure and compost was the ideal soilless media.

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The research trial was conducted during the year 2018-19 at Sapota block of Department of Horticulture, College of Agriculture, Dapoli, Maharashtra to study effect of graded doses of fertilizers on flowering and yield attributes in sapota cv. Kalipatti. The fertilizer treatments were T1 (1.5 Kg Each NPK + 100Kg FYM Tree -1 Year -1 in June), T2 (3 Kg each NPK +200Kg FYM Tree -1 Year -1 in June -Recommended dose), T3 (4.5 Kg each NPK+ 300 Kg FYM Tree -1 Year -1 in two splits i.e., ½ in June and ½ in September) and T4 (6 Kg each NPK + 400 Kg FYM Tree -1 Year -1 in three splits i.e., ⅓ in June, ⅓ in September and ⅓ in January)The significantly maximum number of flowers per shoot (12.52), number of fruit set (3.52), fruit set % (29.69%), number of retained fruits (1.76), fruit retention % (47.28%) and minimum period for fruit development (214.96 days) were observed with application of treatment T4 i.e. 6 Kg each NPK + 400 Kg FYM Tree⁻¹ Year⁻¹ in three splits i.e., ⅓ in June, ⅓ in September and ⅓ in January. The application of treatment T4 i.e. 6 Kg each NPK + 400 Kg FYM Tree⁻¹ Year⁻¹ in three splits i.e., ⅓ in June, ⅓ in September and ⅓ in January resulted in significantly maximum number of fruits per tree (429.46), fruit yield per tree (63.85 Kg) and yield per hectare (4.09 ton). While, the application of treatment T1 i.e. 1.5 Kg Each NPK + 100Kg FYM Tree⁻¹ Year⁻¹ in June recorded significantly minimum number of fruits per tree (268.30), fruit yield per tree (29.63 Kg) and yield per hectare (1.89 ton).