“STUDIES ON THE EFFECT OF NUMBER OF NODES AND PORTION OF VINE CUTTTINGS ON GROWTH AND TUBER YIELD OF SWEET POTATO (Ipomea batatus L.).Cv. KIRAN UNDER SOUTHERN TELANGANA CONDITIONS’’

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Date
2020-03-25
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SRI KONDA LAXMAN TELANGANA STATE HORTICULTURAL UNIVERSITY,MOJERLA
Abstract
The present investigation entitled “Studies on the effect of number of nodes and portion of vine cuttings on (Ipomea batatas L.) cv. Kiran grown under Southern Telangana conditions” was carried out during the year 2016 – 17 at College of Horticulture, Mojerla. The results revealed that, among the number of nodes, N4 (vines with 9 nodes) recorded the highest percentage of crop establishment (93.78 %), longest vine length (167.65 cm), highest number of branches (16.63), highest number of nodes (36.68), highest intermodal length (5.56 cm) and above ground biomass yield (20.98). Among the cuttings from terminal portion of vine recorded significantly the maximum crop establishment percentage (92.84%), highest vine length (159.49 cm), number of branches (15.36), number of nodes (37.44), internodal length (5.58 cm) and maximum above ground biomass yield (20.98) over the other two cutting portions. The interaction effect, N4 (vine with 9 nodes) with cuttings from terminal portion of the vine recorded the highest percentage of crop establishment (97.26 %), longest vine length (176.86 cm), maximum number of branches (18.2), number of nodes (40.26), intermodal length (5.86 cm) and highest above ground biomass yield (21.94) over other interactions. The results pertaining to yield parameters revealed that, Among the number of nodes, N4 (vine with 9 nodes) recorded the maximum tuber length (15.32 cm), tuber diameter (4.75 cm), tuber weight (149.86 g), number of tubers per vine (7.16), tuber weight per vine (765.18 g), weight of marketable tubers (14.44 kg), highest total tuber weight per plot (14.71 kg), root yield per hectare (12.25 t) and harvest index (70.05 %) and least number of days taken to harvest (119.05). N4 (cuttings from terminal portion of the vine) also recorded the minimum unmarketable tubers (0.27 kg) and is on par with N3 (cuttings from middle portion of the vine) (0.27 kg) Among the portion of cuttings, P1 (cuttings from terminal portion of the vine) recorded highest tuber length (14.83 cm), tuber diameter (4.59 cm), tuber weight (151.54 g), number of tubers per vine (6.13), tuber weight per vine (734.74 g), weight of marketable tubers (13.81 kg), total tuber weight per plot (14.22 kg), root yield per hectare (11.84 t) and harvest index (67.62 %). It also recorded least number of days taken to harvest (119.07) and least weight of unmarketable tubers (0.413kg). Among the interaction treatments vine with 9 nodes along with cuttings from terminal portion of the cuttings recorded the highest value for all the yield parameters mentioned. Tuber length (16.76 cm), tuber diameter (5.36 cm), tuber weight (164.04 g), number of tubers per vine (7.86), tuber weight per vine (844.75 g), weight of marketable tubers (15.69), tuber yield per plot (15.80 kg), harvest index (72.05 %) and root yield per hectare (13.15 t). The same interaction effect recorded minimum unmarketable tubers (0.11 kg) and least number of days taken to harvest (115.66)
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“STUDIES ON THE EFFECT OF NUMBER OF NODES AND PORTION OF VINE CUTTTINGS ON GROWTH AND TUBER YIELD OF SWEET POTATO (Ipomea batatus L.).Cv. KIRAN UNDER SOUTHERN TELANGANA CONDITIONS’’
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