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    EFFECT OF NANO SCALE NUTRIENTS ON GROWTH, FLOWER YIELD AND VASE LIFE OF GERBERA (Gerbera jamesonii Bolus ex Hooker F.) GROWN UNDER POLYHOUSE CONDITIONS
    (COLLEGE OF HORTICULTURE, ANANTHARAJUPETA, Y.S.R KADAPA DISTRICT, -516 105, ANDHRA PRADESH, 2021-03-15) A. DEVI PRIYA; Dr. K.Swarajya Lakshmi
    The present investigation “Effect of nano scale nutrients on growth, flower yield and vase life of Gerbera (Gerbera jamesonii Bolus ex Hooker F.) grown under polyhouse conditions” was conducted during the period from November 2018 to September 2020 at College of Horticulture, Dr. Y.S.R Horticultural University, Anantharajupeta, Y.S.R District of Andhra Pradesh. Experiment-I was laid out in Completely Randomized Design CRD with three replications and nine treatments (T1: Nano ZnO @ 100 ppm, T2: Nano ZnO @ 150 ppm, T3 : Nano ZnO @ 200 ppm, T4: Nano ZnO @ 300 ppm, T5: Nano FeO @ 100 ppm, T6: Nano FeO @ 150 ppm, T7: Nano FeO @ 200 ppm,T8: Nano FeO @ 300 ppm and T9: Control (water spray)). Among different concentrations of nano ZnO used, ZnO @ 300 ppm recorded maximum plant height (36.85 cm) number of leaves plant-1 (24.60), leaf length (27.51 cm), leaf width (12.53 cm), leaf area (276.00 cm 2 ), plant spread (36.20 cm), flower stalk length (58.40 cm), stalk diameter (7.79 mm), neck diameter (5.80 mm), flower head diameter (11.90 cm), flower disc diameter (2.70 cm) and number of flowers plant-1 (18.40) whereas ZnO @ 200 ppm took minimum number of days for flower bud initiation (47.07 days), number of days taken for bud burst (52.00 days) and days taken taken to reach marketable stage from bud burst (5.80 days). Among different concentrations of nano FeO applied, FeO @ 300 ppm has significantly increased plant height (35.55 cm), number of leaves plant-1 (22.43), leaf length (26.98 cm), leaf width (12.20 cm), leaf area (263.81 cm 2 ) and plant spread (33.37 cm), maximum flower stalk length (56.97), stalk diameter (7.57), neck diameter (5.63), flower head diameter (11.73), flower disc diameter (2.40) and number of flowers plant-1 (17.97) and also took lesser number of days for flower bud initiation (49.07 days), number of days taken for bud burst (53.93 days) and days taken taken to reach marketable stage from bud burst (6.07 days). Experiment-II was carried out to study the effect of nano and conventional forms of zinc conditions. and iron and their combined effect on growth, yield and quality of Author : A. DEVI PRIYA Title of thesis : Effect of nano scale nutrients on growth, flower yield and vase life of Gerbera (Gerbera jamesonii Bolus ex Hooker F.) grown under polyhouse gerbera in a Completely Randomized Design with three replications and 12 treatments (T1: ZnO @ 300 ppm, T2: ZnO @ 200 ppm, T3: FeO @ 300 ppm, T4: FeO @ 200 ppm, T5: FeSO4 @ 0.2%, T6: ZnSO4 @ 0.2%, T7: ZnO @ 300 ppm + FeO @ 300 ppm, T8: ZnO @ 300 ppm + FeO @ 200 ppm, T9: ZnO @ 200 ppm + FeO @ 300 ppm, T10: ZnO @ 200 ppm + FeO @ 200 ppm, T11: ZnSO4 @ 0.2% + FeSO4 @ 0.2%, T12: control (Water spray)). Among all the treatments T8 (ZnO @ 300 ppm + FeO @ 200 ppm) recorded maximum plant height (47.15 cm) number of leaves plant-1 (41.43), leaf length (34.32 cm), leaf width (14.09 cm), leaf area (386.58 cm 2 ), plant spread (50.78 cm), number of suckers plant-1 (7.15), flower stalk length (65.47 cm), stalk diameter (7.63 mm), neck diameter (5.90 mm), flower head diameter (12.97 cm), flower disc diameter (2.64 cm), length of ray floret (5.46 cm), width of ray floret (1.08 cm) and also number of flowers produced plant-1 (66.27), number of flowers m -2 (397.64), number of flowers hectare-1 (39.76 lakhs) and net returns (lakh Rs. 84.82 ha-1 ) with higher B:C ratio (1:3.33) upto 360 DAP. The number of days taken to flower bud initiation, bud burst, and days to reach marketable stage from bud burst (44.38 days, 49.41 days and 6.00 days respectively) was found to be early in T9 (ZnO @ 200 ppm + FeO @ 300 ppm). Maximum chlorophyll (1.69 mg g-1 FW) and carotenoid (8.84 mg 100 g-1 ) content was recorded in T9 (ZnO @ 200 ppm + FeO @ 300 ppm). The available N (4.97%), P (1.17 %) K (5.40 %), Zn (119.50 %) and Cu (36.17 %) content of gerbera leaf were recorded highest with foliar application of T8 (ZnO @ 300 ppm + FeO @ 200 ppm) at 360 DAP. The highest B (68.19 ppm) and Mn (131.60 ppm) content was recorded in T9 (ZnO @ 200 ppm + FeO @ 300 ppm whereas Fe content (356.67 ppm) was found to be highest in T7 (ZnO @ 300 ppm + FeO @ 200 ppm) at 360 DAP. Experiment-III was carried out with three replications and 12 treatments (T1: Deionized water, T2: Sucrose@ 2%, T3: Sucrose@ 4%, T4: Silver nitrate@ 20 ppm, T5: Silver nitrate@ 20 ppm+ Sucrose@ 2%, T6: Silver nitrate@ 20 ppm+ Sucrose@ 4%, T7: Nano silver particles @5 ppm, T8: Nano silver particles @10 ppm, T9: Nano silver particles @5 ppm + sucrose 2%, T10: Nano silver particles @5 ppm + sucrose 4%, T11: Nano silver particles @10 ppm + sucrose 2%, T12: Nano silver particles @10 ppm + sucrose 4%). Among different treatments, (T11) 10 ppm nano silver + sucrose 2% recorded maximum fresh weight of flower (20.08 g), water uptake (8.78 g), TLW (8.63 g), water balance (1.54 g) and vase life (19.77 days).
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    ThesisItemOpen Access
    EVALUATION OF GLADIOLUS CULTIVARS UNDER OPEN FIELD CONDITIONS FOR GROWTH, YIELD AND VASE LIFE IN SOUTHERN ZONE OF ANDHRA PRADESH
    (Dr. Y.S.R. HORTICULTURAL UNIVERSITY, 2014-07) A. DEVI PRIYA; (Dr. K. SWARAJYA LAKSHMI
    The present investigation “Evaluation of gladiolus cultivars under open field conditions for growth, yield and vase life in Southern zone of Andhra Pradesh” was conducted during the period from September 2013 to March 2014 at Horticulture College and Research Institute, Dr. Y.S.R Horticultural University, Anantharajupet, Y.S.R District of Andhra Pradesh. The experiment was laid out in RBD with three replications and fourteen treatments (Ac No. 7, American Beauty, Arun, Arka Amar, Arka Gold, Arka Naveen, Bindya, Darshan, Dhiraj, Sadabahar, Suchitra, Swarnima, Sylvia, Tilak). The spacing adopted was 0.3m× 0.2m. The results on vegetative parameters revealed that maximum plant height at spike emergence and spike harvest was observed in the cultivars Bindya (80.27, 110.33 cm) and Swarnima (75.20, 106.20 cm) respectively. Maximum number of leaves plant-1, leaf length and leaf width was recorded in cv. Bindya (9.46, 58.33 cm, 3.79 cm) respectively. Significant variations were observed for floral characters, among all cultivars, cv. Bindya (52.20, 56.13, 59.67, 63.67 days), Ac. No 7 (54.73, 58.53, 61.00, 63.80 days) and Swarnima (55.53, 60.67, 63.67, 67.73 days) were found early to spike initiation, full emergence of spike, first floret to show colour and first floret to open respectively. The cultivar Swarnima (90.60, 54.47 cm) recorded maximum Spike Name of the author : A. DEVI PRIYA Title of the thesis : Evaluation of gladiolus cultivars under open field conditions for growth, yield and vase life in Southern zone of Andhra Pradesh Degree to which it is submitted : M.Sc. (Horticulture) Department : Floriculture and Landscape Architecture Faculty : HORTICULTURE Major Advisor : Dr. K. SWARAJYA LAKSHMI University : Dr.Y.S.R HORTICULTURAL UNIVERSITY Year of submission : 2014 length and rachis length. Cultivars Swarnima (13.40) and Arka Amar (13.00) also produced more number of florets spike-1. Maximum diameter of first floret was noticed in cultivar Arka Gold (12.37 cm) and Bindya (12.27 cm). Maximum vase life period and longevity of spike on plant was observed in cultivar Arka Gold (12.03, 16.40 days). With regard to corm parameters maximum number of corms plant-1 was recorded in cultivar American Beauty (2.60) and Arka Amar (2.47) where as cultivar Arka Amar (34.33) produced more number of cormels plant-1 followed by American Beauty (28.20). The maximum weight of corms plant-1 and diameter of corm was observed in cv. Bindya (126.13 g, 7.71 cm respectively). The weight of cormels was highest in cultivar Sylvia (40.69 g) and Arka Amar (38.45 g).