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Open Access
EFFECT OF DIIFRENT CHEMICALS ON YIELD AND QUALITY OF BER CV. GOLA 3725
(JAU JUNAGADH, 2023-08) PATEL YUKTAKUMARI JITENDRAKUMAR; N. D. Polara; 2020621012
The present investigation entitled “Effect of different chemicals on yield and quality of ber cv. Gola” was carried out at Fruit Research Station, Khengarvav, College of Horticulture, Junagadh Agricultural University, Junagadh during the year 2022-23. The experiment was carried out in Randomized Block Design with three replications and 9 treatments comprised of Control (T1), NAA @ 40 ppm (T2), NAA @ 60 ppm (T3), KNO3 @ 1.5 % (T4), KNO3 @ 2 % (T5), Borax @ 0.4 % (T6), Borax @ 0.6 % (T7), Multi-micronutrient grade- IV @ 1 % (T8) and Multi-micronutrient grade IV @ 2 % (T9). Various chemicals applied by foliar spray on 15th October, 2022 at flowering stage and second spray was 30 days after first spray. The result on the effect of different chemicals on physical parameters and yield and yield attributing parameters indicated that the treatment NAA @ 40 ppm executed maximum fruit weight (27.83 g), fruit length (3.53 cm), fruit diameter (3.62 cm), fruit volume (29.31 ml), pulp weight (25.41 g), minimum stone weight (2.19 g) with maximum pulp: stone ratio (11.62), maximum fruit set (11.65 %), minimum fruit drop (40.83 %), maximum fruit yield (11.88 kg/tree) and yield (3.29 t/ha). The quality parameters were also significantly influenced by different chemicals and the lowest acidity (0.19 %), maximum total soluble solids (19.90 °Brix), TSS: acid ratio (105.13), ascorbic acid (109.25 mg/100 g), total sugars (10.14 %) reducing sugars (5.68 %) and shelf life (12.67 days) were recorded in NAA @ 40 ppm. As far as the economic point of view, maximum net realization (64808 ₹ ha-1 ) along with benefit cost ratio (1.97) was obtained in NAA @ 40 ppm. The results obtained in the present study demonstrated that the foliar spray of NAA @ 40 ppm (8.8 ml in 10 litre of water) for two times first spray at flowering stage and second spray 30 days after first spray resulted in enhanced yield and qualitative parameters and also gave maximum net realization and BCR in ber cv. Gola.
Open Access
EFFECT OF DIFFERENT DOSES OF UREA AND NANO-UREA ON GROWTH, YIELD AND QUALITY OF GUAVA (Psidium guajava L.) CV. LUCKNOW-49 3723
(JAU JUNAGADH, 2023-08) BHATTI DRASHTI NILESHBHAI; D. K. Varu; 2020621003
The present investigation entitled “Effect of different doses of urea and nano urea on growth, yield and quality of guava (Psidium guajava L.) cv. Lucknow-49” was carried out at Fruit Research Station, Sakkarbaug Farm, College of Horticulture, Junagadh Agricultural University, Junagadh during the year 2022-23. The experiment was laid out in Randomized Block Design (Factorial) with Control vs Rest concept consisting of two levels of urea, five levels of nano-urea and RDF as a control, which were replicated three times. The results revealed that the variation due to different treatments of urea was found significant and highest incremental plant spread (E-W) (0.72 m), number of flowers per shoot (11.84), number of fruits per plant (93.93), fruit yield per plant (16.22 kg), yield per hectare (12.01 tonnes) and reducing sugar (3.94 %) were found in 100 % RDN (U1). While, highest incremental plant height (0.72 m), incremental plant spread (N-S) (0.93 m), fruit weight (196.70 g), TSS (14.32 ˚Brix), total sugar (5.95 %), non reducing sugar (2.17 %) and nitrogen content (1.95 %) in leaf were obtained in treatment of 80 % RDN (U2). Regarding nano-urea, the result was also recorded significant and maximum number of flowers per shoot (12.44), fruit set (75.33 %), number of fruits per plant (102.58), fruit yield per plant (18.64 kg), fruit yield per hectare (13.81 tonnes), nitrogen content (1.98 %) in leaf and minimum fruit drop (24.67 %) and titratable acidity (0.35 %) were registered in 0.1 % nano-urea (N1). Similarly, maximum incremental plant height (0.82 m), plant spread (N-S) (1.03 m) and reducing sugar (4.05 %) were found in 0.5 % nano-urea (N4). While, Incremental plant spread (E-W) (0.89 m) was noted maximum in 0.6 % nano-urea (N5). Maximum non-reducing sugar (2.43 %) and lowest days to flowering (7.25) were observed in 0.2 % nano-urea (N2). Similarly, maximum TSS (14.58 ˚Brix) was obtained in 0.4 % nano-urea (N3). For interaction effect, maximum number of fruits per plant (112.00), fruit yield per plant (18.66 kg) and yield per hectare (13.82 tonnes) were reported in 100 % RDN + 0.1 % nano-urea (U1N1). While, maximum incremental plant height (0.83 m) and plant spread (E-W) (0.91 m) were found in 100 % RDN + 0.6 % nano-urea (U1N5) and maximum incremental plant spread (N-S) (1.43 m) was noted in 80 % RDN + 0.6 % nano-urea (U2N5). Similarly, maximum fruit weight (219.80 g) was noted in 80 % RDN + 0.2 % nano-urea (U2N2). Maximum TSS (15.43 ˚Brix) and nitrogen content of leaf (2.17 %) were found in 80 % RDN + 0.4 % nano-urea (U2N3). Likewise, maximum total sugar (6.73 %), reducing sugar (4.09 %) and non-reducing sugar (2.64 %) were observed in 100 % RDN + 0.2 % N through nano-urea (U1N2). In case of control vs rest of the treatments, the result was observed significant and maximum plant height (0.71 m), leaf area (109.88 cm2 ), chlorophyll content (48.45 SPAD), number of flowers per shoot (11.11), fruit weight (184.52 g), fruit length (7.33 cm), fruit diameter (6.92 cm), fruit set (72.82 %), fruit yield per plant (15.80 kg), fruit yield per hectare (11.70 tonnes), titratable acidity (0.45 %), total sugar (5.83 %), non reducing sugar (1.98 %) and lowest days to flowering (8.17) and fruit drop (27.18 %) were recorded in treated plants as compared to control. In terms of economic point of view the maximum net returns (395508 Rs./ha) was obtained in treatment 100 % RDN + 0.1 % nano-urea (U1N1). From present study, it can be inferred that an application of 100 % RDN with 0.1 % nano-urea increased fruit yield per plant and per hectare of guava.
Open Access
IMPACT OF LEAF TO FRUIT RATIO ON PHYSICO-CHEMICAL TRAITS OF GUAVA CV. LALIT UNDER HIGH DENSITY PLANTING 3021
(JAU JUNAGADH, 2023-07) MAKVANA ANJALIBEN GOVINDBHAI; S. K. Bhuva
The present investigation entitled “Impact of leaf to fruit ratio on physico chemical traits of guava cv. Lalit under high density planting” was conducted at Fruit Research Station, Sakkar Baug, College of Horticulture, Junagadh Agricultural University, Junagadh (Gujarat) during August 2022 to December 2022. The experiment was laid out in Randomized Block Design (RBD) with 8 treatments consist of T1 - (Leaf: fruit, 4:1), T2 - (Leaf: fruit, 6:1), T3 - (Leaf: fruit, 8:1), T4 - (Leaf: fruit, 10:1),T5 - (Leaf: fruit, 12:1), T6 - (Leaf: fruit, 14:1), T7 - (Leaf: fruit, 16:1), T8 - (Control) with three replications. The results indicated that among eight treatment, maximum leaf area (60.01 cm2 ) was observed in T7 (Leaf: fruit, 16:1). While, maximum chlorophyll content (51.93 SPAD) and leaf carbohydrate (55.71 %) were observed in T6 (Leaf: fruit, 14:1). Maximum fruit weight (164.13 g), fruit length (6.71 cm), fruit width (6.65 cm), fruit circumference (20.79 cm), fruit volume (152.53 ml), fruit firmness (11.07 kg/cm2 ), pulp weight (146.65 g) and pulp: seed ratio (8.38) were observed in T4 (Leaf: fruit, 10:1). Whereas, minimum number of seeds (352.33) and seed weight (16.50 g) were noted in T8 (Control). Maximum yield (8.63 kg/plant), TSS (14.87 oBrix), ascorbic acid (241.07 mg/100 g of pulp), non reducing sugar (6.15 %), total sugar (14.16 %) and maximum score for pulp appearance and color (7.33), taste (7.32), flavor (6.96) and overallacceptability (7.75) were recorded in T4 (Leaf: fruit, 10:1) at harvest. Therefore, leaf to fruit ratio of 10:1 showed the better performance in terms of fruit weight, fruit length, fruit width, fruit circumference, fruit volume, fruit firmness, pulp weight, pulp: seed ratio, yield per plant, TSS, ascorbic acid, non reducing sugar, total sugar and organoleptic parameters viz., pulp appearance and color, taste, flavor and overall acceptability. In case of chlorophyll content and leaf carbohydrate, leaf to fruit ratio of 14:1 and for leaf area, leaf to fruit ratio of 16:1 showed the better performance. While, in case of seed number and seed weight trees with control treatment showed the better performance in guava cv. Lalit.
Open Access
EFFECT OF GROWTH RETARDANTS ON DWARFISM, FLOWERING, YIELD AND QUALITY OF PAPAYA (Carica papaya L.) CV. GJP 1 3709
(JAU, 2023-07) BHADARKA CHANDNIBEN RAJSHIBHAI; D. R. Kanzaria; (Registration No. - 2020621002)
Papaya, Growth retardants, Dwarfism, Flowering, Yield, Quality etc. The present investigation entitled “Effect of growth retardants on dwarfism, flowering, yield and quality of papaya (Carica papaya L.) cv. GJP 1” was carried out at Fruit Research Station, Lalbaug, Junagadh Agricultural University, Junagadh during the year 2022-23. The experiment was carried out in Randomized Block Design with three replications and 10 treatments comprised T1- (Control), T2- (Ethrel 150 ppm), T3- (Ethrel 250 ppm), T4- (Ethrel 350 ppm), T5- (Cycocel 750 ppm), T6- (Cycocel 1500 ppm), T7- (Cycocel 3000 ppm), T8- (Paclobutrazol 250 ppm), T9- (Paclobutrazol 500 ppm) and T10- (Paclobutrazol 1000 ppm). The result on the effect of growth retardants indicated that the treatment of cycocel 3000 ppm executed the minimum plant height (142.44 cm), average internodal length (2.87 cm), bearing height (63.97 cm), height of the plant at the time bearing (105.90 cm), leaf stalk length (46.51 cm), days to first flowering (61.83), days to first fruit set (66.61), male: female ratio (plant) (0.89), days to maturity (120.33), highest number of leaves (33.74), number of fruits per plant (25.29), average yield kg per plant (29.86 kg) and yield tone per hectare (92.15 t/ha). The result on the effect of growth retardants indicated that the treatment ethrel 250 ppm recorded maximum average fruit length (21.91 cm), average fruit circumference (44.25 cm), average fruit weight (1262.21 g), average pulp weight (1021.35 g), average peel weight (160.65 g), pulp: peel ratio (6.36), TSS (9.10 oBrix), total sugar (9.53 %), reducing sugar (7.99 %), non reducing sugar (1.54 %) and minimum average peel weight per cent (12.73 %). From economic point of view, maximum net realization (₹ 587257.41 ha-1 ) along with benefit cost ratio (2.76) was obtained in cycocel 3000 ppm. Based on the results obtained from the present investigation it can be concluded that the foliar spray of cycocel (3000 ppm i.e., 6 ml/litre of water) at 30th and 45th day after transplanting restricts vegetative growth viz., plant height, bearing height, internodal length, leaf stalk length; moreover, it induces early flowering, fruit set which resulted in early maturity, lower male: female ratio (plant), increases number of leaves and fruits per plant, yield, maximum net realization and BCR. Though, yield attributing characters viz., fruit length, fruit circumference, fruit weight, pulp weight, pulp: peel ratio, biochemical parameters and least peel weight per cent were reported in fruits of treatment of ethrel (250 ppm i.e., 0.64 ml/liter of water) but number of fruits were less.
Open Access
STUDIES ON FLORAL BIOLOGY AND FRUIT SET IN DIFFERENT VARIETIES OF SAPOTA (Manilkara zapota L.) 3747
(JAU JUNAGADH, 2023-08) SAMPADA R; Dr. A. M. Butani; 2020621018
The present investigation entitled “Studies on floral biology and fruit set in different varieties of sapota (Manilkara zapota L.)” was conducted during the year 2022 at Fruit Research Station, Jambuvadi, College of Horticulture, Junagadh Agricultural University, Junagadh (Gujarat). The experiment was laid out in a Randomized Block Design with eight different treatments and three replications. The treatments comprised of different varieties viz., Zumakhiya (V1), Kalipatti (V2), Pilipatti (V3), Culcutti special (V4), Mohongootee (V5), Bhuripatti (V6), Murabba (V7) and Cricket ball (V8). The result of the study regarding the floral biology and fruit set revealed that flower bud of sapota passes through distinct stages until development and takes 27 to 37 days for complete development. The optimum time for anthesis was found from 4:00 to 5:00 a.m., for dehiscence was from 8:00 to 9:00 a.m. and for stigma receptivity was from 8:00 to 9:00 a.m. Intensity of stigma receptivity was more on one day before anthesis. The total duration of anther dehiscence was about 10-13 hours. Minimum days to flower bud development, minimum days to anthesis and maximum duration of dehiscence were found in variety Bhuripatti while maximum pollen germination, pollen viability, fruit set, fruit yield and minimum fruit drop were observed in variety Kalipatti. After the study of floral biology and fruit set in different varieties of sapota, it can be concluded that variety Bhuripatti was observed to be having better floral biological parameters and variety Kalipatti gave the better result in fruit set and yield parameters compared to other varieties
Open Access
EFFECT OF FOLIAR APPLICATION OF BIOSTIMULANTS AND SILICON ON FRUIT SETTING, YIELD AND QUALITY OF MANGO (Mangifera indica L.) CV. KESAR 3636
(JAU JUNAGADH, 2022-10) AAL JIGARKUMAR MAVAJIBHAI; Dr. K. M. Karetha; 1020619001
The present investigation entitled “Effect of foliar application of biostimulants and silicon on fruit setting, yield and quality of mango (Mangifera indica L.) cv. Kesar” was carried out at Fruit Research Station, Sakkarbaug, College of Horticulture, Junagadh Agricultural University, Junagadh during the year 2020-21 and 2021-22. The experiment was laid out in Randomized Block Design with Factorial concept (FRBD) consisting two factors with three replications. The treatment comprised with biostimulants viz., without biostimulant, humic acid (1.5 %), panchagavya (3 %), seaweed extract (0.2 %), novel organic liquid fertilizer (2 %) and silicon viz., without silicon, potassium silicate (0.2 %) and orthosilicic acid (0.2 %). The results pertaining to yield and yield attributing and physical parameters with respect to biostimulants indicated significantly maximum number of fruits at grain (71.67, 70.75 and 71.21), pea (15.77, 14.62 and 15.19) and marble stage (4.83, 3.89 and 4.36), fruits at pea (21.96, 20.57 and 21.27 %) and marble stage (6.70, 5.47 and 6.09 %), fruit retention at harvesting (2.13, 1.93 and 2.03 %), minimum fruit drop at pea (78.05, 79.43 and 78.74 %) and marble stage (93.29, 94.54 and 93.91 %), lowest no. of nubbins per 100 fruits at pea (19.52, 21.31 and 20.42) and marble stage (9.78, 11.57 and 10.67), maximum number of fruits per tree (236.34, 191.09 and 213.71), fruit yield (54.87, 46.69 and 50.78 kg/tree) and fruit yield (15.25, 12.98 and 14.12 t/ha), maximum fruit length (10.51, 10.69 and 10.60 cm), fruit breadth (6.64, 6.71 and 6.67 cm), fruit weight (229.68, 239.48 and 234.58 g), pulp weight (172.23, 179.50 and 175.87 g) and pulp: stone ratio (5.16, 5.15 and 5.16) was recorded with the foliar application of humic acid 1.5 % during both the years as well as in pooled analysis, respectively. In biochemicals and quality parameters maximum TSS (23.29, 23.55 and 23.42 ºBrix), ascorbic acid (48.81, 49.19 and 49.00 mg/100 g), total sugar (15.35, 15.40 and 15.38 %), reducing sugar (5.31, 5.45 and 5.38 %) and minimum acidity Abstract (0.210, 0.207 and 0.208 %), maximum fruit firmness (4.41, 4.54 and 4.47 kg/cm2 ), marketable fruits (20.91, 21.56 and 21.24 %), shelf life (13.32, 13.42 and 13.37 days). minimum physiological loss in weight (13.27, 12.85 and 13.06 %) and spoilage (82.06, 81.78 and 81.92 %) was recorded under the foliar application of humic acid 1.5 % during the year 2020-21, 2021-22 and in pooled analysis, respectively. However, different biostimulants had non-significant effect on non-reducing sugar of fruit during individual years and in pooled data. Among the various silicon foliar application of potassium silicate 0.2 % was registered with maximum number of fruits at grain (70.73, 69.78 and 70.25), pea (14.81, 13.65 and 14.23) and marble stage (4.48, 3.69 and 4.08), fruits at pea (20.86, 19.57 and 20.21 %) and marble stage (6.29, 5.26 and 5.77 %), fruit retention at harvesting (1.97, 1.73 and 1.85 %), minimum fruit drop at pea (79.12, 80.51 and 79.82 %) and marble stage (93.71, 94.75 and 94.23 %), lowest no. of nubbins per 100 fruits at pea (21.57, 23.47and 22.52) and marble stage (11.73, 13.87 and 12.80), maximum number of fruits per tree (215.17, 175.87 and 195.52), fruit yield (49.15, 41.14 and 45.14 kg/tree) and fruit yield (13.66, 11.44 and 12.55 t/ha), maximum fruit length (10.35, 10.43 and 10.39 cm), fruit breadth (6.56, 6.54 and 6.55 cm), fruit weight (224.62, 227.86 and 226.24 g), pulp weight (167.57, 170.02 and 168.79 g) and pulp: stone ratio (5.07, 5.07 and 5.07) during individual years as well as in pooled analysis, respectively. The study revealed the maximum TSS (22.85, 23.03 and 22.94 ºBrix), ascorbic acid (48.12, 48.51 and 48.31 mg/100 g), total sugar (15.80, 15.84 and 15.82 %), reducing sugar (5.01, 5.16 and 5.08 %), minimum acidity (0.219, 0.214 and 0.217 %), maximum fruit firmness (4.21, 4.32 and 4.27 kg/cm2 ), marketable fruits (16.84, 16.73 and 16.78 %), shelf life (12.78, 13.03 and 12.90 days), minimum physiological loss in weight (13.94, 13.50 and 3.72 %) and spoilage (81.84, 81.77 and 81.81 %) was observed in potassium silicate 0.2 % during the year 2020-21, 2021-22 and in pooled analysis, respectively. While, variation in non-reducing sugar was observed non significant due to different application of silicon during individual years as well as in pooled data. In the present investigation some of the interaction effects were also found significant. The treatment combination (B1S1) application of humic acid 1.5 % with potassium silicate 0.2 % recorded maximum number of fruits per tree (259.26, 211.88 and 235.57), fruit yield (64.66, 56.18 and 60.42 kg/tree), fruit yield (17.97, 15.62 and 16.80 t/ha), fruit length (10.93, 11.20 and 11.06 cm), fruit breadth (6.82, 6.90 and 6.86 cm), fruit weight (247.78, 261.63 and 254.71 g), pulp weight (187.39, 197.83 and 192.61 g) and TSS (24.10, 24.51 and 24.30 ºBrix) during both the years as well as in pooled analysis, respectively. Among the different treatment combination, humic acid 1.5 % with potassium silicate 0.2 % (B1S1) recorded highest net realization (₹ 6,41,568/ha) with BCR (3.23) followed by treatment combination of panchagavya 3 % with potassium silicate 0.2 % (B2S1) with net realization (₹ 5,46,068/ha) and BCR (3.16). On the basis of finding of two years experiment, it can be concluded that for improved yield and yield attributing characters, physical, biochemicals and quality parameters as well as higher net realization can be achieved with foliar application of humic acid 1.5 % along with potassium silicate 0.2 % at initiation of flowering, pea and marble stage
Open Access
EFFECT OF LEAF TO FRUIT RATIO ON GROWTH, YIELD AND QUALITY OF CUSTARD APPLE CV. GJCA-1 3622
(JAU JUNAGADH, 2022-08) MAKWANA PAYAL SHAMJIBHAI; Dr. S. K. Bhuva; 2020620005
The present investigation entitled “Effect of leaf to fruit ratio on growth, yield and quality of custard apple cv. GJCA-1.” was conducted at FRS, Madhadi Baug, College of Horticulture, Junagadh Agricultural University, Junagadh during the year 2021-22. The treatments comprised of eight level viz., T1: (Leaf: fruit, 4:1), T2: (Leaf: fruit, 6:1), T3: (Leaf: fruit, 8:1), T4: (Leaf: fruit, 10:1), T5: (Leaf: fruit, 12:1), T6: (Leaf: fruit, 14:1), T7: (Leaf: fruit, 16:1), T8: Control. The experiment was laid out in Randomized Block Design (RBD) with three replications. The result indicated that among eight treatment, maximum leaf area (87.78 cm2 ), maximum chlorophyll content (52.83 SPAD) and maximum leaf carbohydrate content (0.84 %) were observed in T6 (Leaf: fruit, 14:1), maximum fruit weight (178.33 g), maximum fruit length (78.31 mm), maximum fruit width (79.40 mm) and maximum fruit volume (151.57 ml) was observed in T6 (Leaf: fruit, 14:1), maximum pulp weight (79.33 g), maximum pulp: seed ratio (18.58) and maximum pulp: rind ratio (1.29) was noted in T3 (Leaf: fruit, 8:1), maximum yield kg per plant (8.03 kg/plant), maximum yield tonne per hectare (6.69 t/ha) was recorded in T6 (Leaf: fruit, 14:1), maximum total sugar (11.77 %), maximum reducing sugar (3.80 %) and maximum non reducing sugar (7.98 %) was recorded in T5 (Leaf: fruit, 12:1) at harvest. Therefore, leaf to fruit 14:1 showed the better performance in terms of leaf area, chlorophyll content, leaf carbohydrate content, fruit weight, fruit length, fruit width, fruit volume, yield kg per plant and yield tonne per hectare. In case of pulp weight, pulp to seed ratio and pulp to rind ratio, leaf to fruit 8:1 showed the better performance and in case of total sugar, reducing sugar and non reducing sugar, leaf to fruit 12:1 showed the better performance in custard apple cv. GJCA-1.
Open Access
EFFECT OF BIO-STIMULANTS AND MULTI MICRONUTRIENTS ON FLOWERING, FRUITING, YIELD AND QUALITY OF GUAVA (Psidium guajava L.) CV. ALLAHABAD SAFEDA 3507
(JAU JUNAGADH, 2022-08) MATHUKIYA HEMANGIBEN MUKUNDBHAI; Dr. N. D. Polara; 2020620007
The present investigation entitled “Effect of bio-stimulants and multi micronutrients on flowering, fruiting, yield and quality of guava (Psidium guajava L.) cv. Allahabad Safeda” was carried out at Fruit Research Station, Madhadibaug, Junagadh Agricultural University, Junagadh during the year 2021-22. The experiment was carried out in Randomized Block Design with three replications and 11 treatments comprised foliar application (before flowering at 15th July and one month after fruiting at 10th September) of seaweed extract @ 1 and 2 %, humic acid @ 1 and 2 %, Novel organic liquid fertilizer @ 1.5 and 2 %, multi micronutrients grade-IV @1 and 2 %, Azotobacter + PSB + KSB @ 3 and 5 ml/plant each as soil application along with control. Solution was prepared by dissolving 10 ml of bio-stimulants in 1 liter of water (for 1 % solution) and for multi micronutrients grade IV dissolve 10 g of powder in 1 liter of water (for 1 % solution). Different physical and biochemical parameters were recorded. Foliar spray of seaweed extract @ 2 % recorded maximum incremental plant height (1.09 m), incremental canopy spread N-S (1.16 m) and E-W (1.14 m), maximum number of flowers/shoot (33.12), fruit set (84.78 %). Whereas minimum incremental plant height (0.78 m), incremental canopy spread both N-S and E-W (0.53 and 0.63 m), less number of flowers/shoot (16.59) and minimum fruit set (44.49 %) were recorded in control. Foliar spray of seaweed extract @ 2 % recorded maximum fruiting parameters like fruit weight (170.74 g), fruit length (7.47 cm), fruit girth (12.38 cm ), pulp weight (151.04 g), maximum Pulp: seed ratio (22.78). Maximum yield (18.85 kg/tree and 15.70 t/ha) recorded with foliar application of seaweed extract @ 2 %. Minimum fruit weight (121.26 g) and minimum yield (12.40 kg/plant, 10.38 t/ha) were recorded in control. Foliar spray of seaweed extract @ 2 % noted maximum biochemical parameters like, TSS (12.430Brix), ascorbic acid (197.76 mg/100 g), total sugars (14.37 %), reducing sugar (3.05 %) and non-reducing sugar (11.32 %). Minimum TSS (10.48 0Brix), ascorbic acid (181.85 mg/100 g), total sugar (10.77 %), reducing sugar (1.77 %), non-reducing sugar (9.00 %) were recorded in control. Also highest organoleptic score for pulp appearance and colour (8.97), pulp texture (8.93), pulp taste (8.90) and overall acceptability (8.90) were recorded in foliar spray of seaweed extract @ 2 %. Minimum score was recorded in control. However, Novel organic liquid nutrients @ 2 % treatment was found at par with seaweed extract @ 2 % in different parameters like incremental plant height, incremental canopy spread, number of flowers/shoot, fruit set %, fruit weight and fruit yield. Highest benefit cost ratio (0.87) and net realization is Rs. 146815 per hectare were recorded in foliar application with seaweed extract @ 2 % followed by treatment of Novel organic liquid nutrients @ 2 % gave net realization of Rs. 135881 per hectare with a BCR of 0.80. Lowest benefit cost ratio (0.28) with net realization Rs. 45813 were recorded in control. The results obtained in the present study concluded that the foliar spray of seaweed extract @ 2 % ( 20 ml in 10 litre of water) for two times once at pre-flowering and second at 30 days after fruit set resulted in enhanced vegetative, flowering, fruiting, yield, qualitative, organoleptic characteristics and also gave maximum net realization and BCR in mrig bahar of guava cv. Allahabad Safeda under south saurashtra agro climatic condition
Open Access
EFFECT OF ROOTSTOCK HEIGHT AND SCION STICK LENGTH ON SUCCESS, GROWTH AND SURVIVAL OF WEDGE GRAFTING IN GUAVA (Psidium guajava L.) 3496
(JAU JUNAGADH, 2022-08) RAJATIYA PURIBEN HAMIRBHAI; Rajatiya Puri H. Dr. D. R. Kanzaria; 2020620012
The present experiment entitled “Effect of rootstock height and scion stick length on success, growth and survival of wedge grafting in guava (Psidium guajava L.)’’ at Fruit Research Station, Lalbaug, Junagadh Agricultural University, Junagadh during March-2021 to July-2021. The experiment was laid out in a Completely Randomized Design with factorial concept with twenty treatment combinations and three repetitions. The experiment involved wedge grafting was performed in guava. The first factor involves rootstock height (15, 20, 25 and 30 cm). The second factor involves scion stick length (05, 7.5. 10, 12.5 and 15 cm) to study the effect of effect of rootstock height and scion stick length on success, growth and survival in guava grafts. The result on the effect of rootstock height minimum number of days taken to sprouting (12.62) in H2 (20 cm height of rootstock). Maximum number of successful grafts (5.00, 5.80, 6.73 and 6.68), highest success rate (50.00, 58.00, 67.33 and 66.82 %), minimum number of failure grafts (1.20, 2.21, 2.81 and 3.32) and lowest mortality rate (12.03, 22.12, 28.09 and 33.18 %) at 30, 60, 90 and 120 days interval, respectively, maximum number of leaves (22.68), number of nodes (11.05), internodes (10.05), leaf area (93.49 cm2 ), incremental scion length (31.79 cm), incremental rootstock length (19.97 cm), graft height (89.72 cm), girth above graft union (6.19 mm), girth below graft union (8.20 mm), number of shoots per graft (4.00) and survival percentage (66.82 %) at 120 DAG were noted in H4 (30 cm rootstock height). The result on the effect of scion stick length minimum number of days taken to sprouting (13.76), maximum number of successful grafts (4.33, 5.58, 6.25 and 6.17), success rate (43.33, 55.83, 62.50 and 61.70 %), minimum number of failure grafts (1.37, 2.46, 3.08 and 3.83) and mortality rate (13.70, 24.68, 30.87 and 38.31 %) at 30, 60, 90 and 120 days interval, respectively, maximum number of leaves (22.59) and maximum survival percentage (61.70 %) at 120 DAG were noted in L3 (10 cm scion stick length). Whereas, maximum number of nodes (9.78), internodes (8.78), leaf area (89.40 cm2 ), incremental scion length (22.52 cm), graft height (65.43 cm), girth above graft union (7.32 mm), girth below graft union (8.11 mm), number of shoots per graft (3.75) at 120 DAG were noted in L5 (15 cm scion stick length). Interaction effect of rootstock height and scion stick length minimum number of days taken to sprouting (11.11 days) was found in treatment H2L3 (20 cm rootstock height and 10 cm scion length) and maximum incremental scion length (33.80 cm) was found in treatment H4L5 (30 cm rootstock height and 15 cm scion length). Hence, for getting more success and the highest survival percentage, the wedge grafts should be prepared during the last week of March to first week of April using 30 cm rootstock (one year old) height and 10 cm scion stick (mature) length in guava.

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