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Researcher Deshmukh, Havgirao N.
Advisor Ramdevputra, M. V.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher JAU
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Light & infrared & ultraviolet phenomena
Subject Keyword Horticulture ♦ Horti ♦ Effect of Spacing and Gibberellic Acid (ga3) On Growth ♦ Flowering and Yield of African Mariglod (tagetets Erecta L.) Cultivars
Abstract A field experiment was conducted at Horticultural Instructional Farm, Department of Horticulture, College of Agriculture, Junagadh Agricultural University, Junagadh during the winter season, 2005-2006. There were total twenty-four treatments, viz. three cultivars (Local Orange, Pusa Narangi and Pusa Basanti), two spacing (60 X 60 cm and 45 X 60 cm) and four GA3 concentrations (0, 100, 200 and 300 ppm), and each were replicated thrice in Factorial Randomized Block Design. Pusa Narangi produced the earliest flowering (84.71 days), maximum flowering span (63.37 days) and vase life of cut flowers (6.08 days), while the largest flower was produced in variety Pusa Narangi (6.50 cm). The highest yield in variety Pusa Narangi (73.99 q/ha) may be attributed to maximum number of flowers (76.94) and weight of flowers (227.51 g) per plant. Therefore, variety Pusa Narangi can be exploited and popularized for commercial cultivation. All the characters except plant height at both flower initiation and full bloom stages and duration of flowering were significantly influenced by spacing. The plant spread at both flower initiation (46.78 cm2) and full bloom stages (50.78 cm2), number of branches (10.84) per plant, earliest flowering (85.07 days), diameter of flowers (5.73 cm) and vase life (5.88 days) of cut flowers were significantly higher in wider spacing (S1) as compared to closer spacing (S2). The number of flowers (76.26) and weight of flowers (228.74 g) per plant were also found higher in wider spacing (S1), whereas, the flower yield (79.88 q/ha) was significantly higher under closer spacing (S2). All the vegetative growth characters were greatly influenced by GA3 at 300 ppm. It had recorded maximum plant height at first flower initiation (57.37 cm) and full bloom (63.83 cm); plant spread at flower initiation (49.66 cm2) and full bloom stage (53.95 cm2) and fresh weight of plant (375.85 g). The maximum number of branches (13.62) per plant was observed with 200 ppm GA3. The highest flower diameter (6.39 cm) and maximum vase life (7.46 days) of cut flower were recorded with 300 ppm GA3. Maximum flowering span (64.17 days) was observed with 200 ppm GA3. Though GA3 at all the levels significantly influenced yield parameters over control, 100 ppm GA3 recorded maximum numbers of flowers per plant (86.46), weight of flowers (248.67) per plant and flower yield (79.56 q/ha). In case of economics, the highest net return (Rs. 52903/ha) was obtained with V2S2G2, whereas the highest CBR (1:1.97) with V2S2G1. Higher concentrations of GA3 failed to increase the net returns and CBR. Minimum net return and CBR (Rs. 8000 per ha and 1:1.13, respectively) were recorded with V3S1G3. It could be concluded from economic point of view that Pusa Narangi should be grown at 45 X 60 cm along with 100 ppm GA3 sprayed on the crop for maximum production of African marigold flowers under South-Saurastra conditions.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Junagadh
Size (in Bytes) 126.51 MB
Page Count 153