2. Major Guide
Dr. B. N. Satodiya
Principle & Unit Officer
Seth D. M. Polyt. in
Horticulture, Model farm,
AAU, Vadodara
Co-Guide
Dr. H. L. Dadhuk
Associate Professor
Department of Genetics &
Plant Breeding,
B.A.C.A., A.A.U., Anand
SPEAKER
Pawan Kumar Nagar
M.Sc. (Hort.) 3rd sem.
Fruit Science
Department of Horticulture
BACA, AAU, Anand 2
5. 5
INTRODUCTION
Guava is also known as the “Apple of tropics”
It is common fruits of the tropical and sub-tropical regions
Guava is the fourth most important fruit of India
It is precocious and prolific bearer, having good quality with
high nutritive value, medicinal attributes
It is used both as fresh fruit and after processing by
preparation of jelly, toffee, candy, pulp, juice, jam, guava
nectar etc.
It is rich source of Vitamin-C (299mg/100g)
5
6. Nutritive value of guava/100g fruit
Constituents Range value
Total sugars 5.0-10.25 g
Protein 0.9-1.40 g
Crude Fat 0.10-0.70 g
Vitamin A 250 IU
Vitamin C 205-10 mg
Niacin 0.20-2.30 mg
Thiamine 0.06-0.20 mg
Riboflavin 0.04-0.20 mg
Calcium 10.50-31.80 mg
Phosphorus 21.00-39.60 mg
Iron 0.55-1.36 mg 6
Constituents Range value
Total sugars 5.0-10.25 g
Protein 0.9-1.40 g
Crude Fat 0.10-0.70 g
Vitamin A 250 IU
Vitamin C 299 mg
Niacin 0.20-2.30 mg
Thiamine 0.06-0.20 mg
Riboflavin 0.04-0.20 mg
Calcium 10.50-31.80 mg
Phosphorus 21.00-39.60 mg
Iron 0.55-1.36 mg
Nutritional value of Guava/100g fruit
7. Scenario of guava
Year 2014 – 2015
Guava
Area
(in’000 ha)
Production
(in Lakh T)
Productivity
(Mt/ha)
India 251.02 40.8 16.3
Gujarat 10.81 1.40 13.3
NHB, Database (2014-15)
7
15. Table 1: Effect of time of budding on days taken for bud sprout and growth of budded
plants of guava cv. Allahabad Safeda
Treatments
Days taken for bud
sprout
Budding success (%) Shoot length (cm) Leaves/sprout
Mid April 27.3 34.0 5.4 4.7
End April 25.6 51.3 8.3 7.3
Mid May 23.8 79.3 10.2 8.0
End May 22.3 88.0 11.2 10.3
Mid June 18.0 93.3 14.9 12.7
End June 18.3 91.3 14.9 12.7
Mid July 19.5 88.7 11.5 11.3
End July 21.3 83.0 10.0 9.0
Mid August 22.5 65.3 7.1 6.7
End August 29.9 58.3 59 4.3
Mid September 33.3 40.0 3.9 1.7
End September 36.7 19.3 1.3 1.5
C.D. (P=0.05) 2.1 8.0 1.9 1.5
Ludhiana, (Punjab) Kumar et al. (2007)15
16. Table 2: Effect of IBA, NAA and its combination on rooting in stooled shoots of
guava cv. Sardar
Treatments Rooted shoots
(%)
Number of
roots/shoot
Root length (cm) Survival (%)
IBA (5000 ppm) 93.33 37.07 6.72 41.17
IBA (7500 ppm) 96.67 46.93 8.45 75.00
IBA (10,000 ppm) 90.00 29.13 5.21 64.43
NAA (5000 ppm) 86.67 20.70 4.28 36.50
NAA (7500 ppm) 90.00 31.43 6.82 60.25
NAA (10,000 ppm) 93.33 45.10 7.32 64.25
IBA (5000 ppm) +NAA (5000 ppm) 90.00 22.30 4.37 52.32
IBA (7500 ppm)+NAA (5000 ppm) 93.33 31.43 5.22 70.00
IBA (10,000 ppm)+NAA (5000 ppm) 96.00 46.00 7.12 65.07
Control (Only lanoline paste) 40.00 7.03 2.73 10.05
C.D. (P=0.05) 9.96 11.16 1.02 11.28
Lal et al. (2007)Pantnagar, (Uttrakhand) 30 Days after stooling 16
21. Table 6: Different spacing and density of plant/ha of guava
Planting system Spacing (m) Density of plant/ha
Low density 8 × 8 156
Medium density
6 × 6 277
High density 3 × 3 1,111
Ultra-high density
3 × 1.5 2,222
Meadow orcharding 2 × 1 5,000
Singh (2010)
23. Advantages of HDP
Increases yield
Improves fruit quality
Reduces labour cost resulting in low cost of production
Enables mechanization of fruit crop production
It facilitates more efficient use of fertilizers, water, solar
radiation, fungicides, weedicides and pesticides
24. Table 7: Effect of different spacing on physico-chemical parameter of guava cv.
Sardar
Spacing (m) Tree height (m) Tree spread (cm) Fruit breadth
(cm)
Breadth
TSS
(ºBrix)
N-W E-W
6 x 4 4.28 5.60 5.63 6.46 9.77
6 x 5 4.58 5.82 6.10 6.67 10.31
6 x 6 4.66 5.90 6.33 6.78 10.77
C.D. (P=0.05) 0.16 0.16 0.17 0.25 0.51
Bal and Dhaliwal (2003)Ludhiana, (Punjab)
24
25. Table 8: Effect of planting density on fruit and quality characters of guava
cv. Sardar
Spacing (m x m) Fruit set (%) Yield/ha
(q)
Vitamin-C
(mg/100g pulp)
6 x 6 61.2 102.4 141.4
4 x 4 60.7 205.1 139.5
3 x 3 57.6 333.7 133.3
2.5 x 2.5 68.8 446.5 131.9
C.D. (P=0.05) 2.21 35.3 4.029
Kundu (2007)Ludhiana, (Punjab)
25
26. Table 9: Effect of different spacing on yield and quality parameters of guava cv.
Sardar
Treatment (m) Fruit weight (g) Yield (kg/plant)
T1- (2.0 x 2.0 ) 77.50 1.32
T2- (2.0 x 1.5 ) 75.40 1.25
T3- (1.5 x 1.5 ) 71.20 1.12
T4- (2.0 x 1.0 ) 73.00 1.05
T5- (1.0 x 1.5) 68.05 0.86
C.D. (P=0.05) 5.6888 0.2027
Kumawat et al. (2014)Udaipur, (Rajasthan) 26
27. 4. Shweta 5. Lalit 6. Apple color
1. Arka Mridula 2. Arka Kiran 3. Arka Rashmi
28. Varietal Improvement
Less and soft seed content for edible purpose
Less pectin content for edible purpose
More pectin content for processing
High keeping quality
Uniform ripening
28
29. Table 10: Characteristics of fruit of newly developed hybrids of guava
Hybrids/Cultivars
Fruit weight (g) Fruit length (cm) Fruit diameter (cm)
RCGH-1 154.75 6.26 6.48
Allahabad Safeda 142.63 5.98 6.15
RCGH-7 135.22 6.24 6.42
L-49 151.68 6.25 6.45
RCGH-4 175.73 6.54 6.99
Lalit 131.11 6.08 6.30
C.D. (P= 0.05) 9.70 0.25 0.31
Deshmukh et al. (2013)Umiam, (Meghalaya) 29
35. Table 14: Influence of bio-fertilizers on physico-chemical properties of guava cv. Sardar
Treatments
Fruit weight
(g)
Fruit length
(cm)
Fruit diameter
(cm)
TSS (°Brix)
Vitamin- C
(mg/100g)
Azotobactor 136.30 3.93 4.35 9.68 129.0
Azospirillum 135.30 3.85 4.03 9.25 136.0
VAM 147.00 4.15 4.58 10.10 151.8
Microphos 139.80 4.00 4.45 9.58 147.5
Phosphobacterin 154.50 4.27 4.68 9.68 149.3
Control 128.50 3.25 3.68 9.30 140.0
C.D. (P=0.05) 8.80 0.18 0.40 0.18 5.04
Dey et al. (2005)Ranchi, (Jharkhand) 35
36. Table 15: Effect of organic and inorganic fertilizers on yield parameters of guava cv.
Hisar Safeda
Bhobia et al. (2006)Hisar, (Hariyana)
Treatments
Fruit
Number of
fruit/plant
Yield (kg/plant)
Length (cm)
Breadth
(cm)
T1 (Control) 6.13 6.00 245 44
T2 (100% N through Urea ) 6.73 6.90 249 56
T3 (80 % N through Urea + 20% N through FYM) 7.30 7.40 259 63
T4 (60 % N through Urea + 40% N through FYM)
7.20 7.80 282 74
T5 (40 % N through Urea + 60% N through FYM)
7.60 8.00 300 85
T6 (20 % N through Urea + 80% N through FYM)
7.30 7.60 280 62
T7 (100% N through FYM) 6.46 6.38 288 58
C.D. (P=0.05) 0.32 0.36 12 8
36
37. Table 16: Effect of organic and inorganic fertilizers on biochemical parameters of guava
cv. Hisar Safeda
Bhobia et al. (2006)Hisar, (Hariyana)
Treatments TSS (ºBrix) Total sugar (%) Reducing sugar (%)
Non reducing
sugar (%)
T1 (Control) 10.2 8.10 4.25 3.85
T2 (100% N through Urea ) 10.2 8.53 4.63 3.95
T3 (80 % N through Urea + 20% N through FYM) 10.4 8.94 4.81 4.12
T4 (60 % N through Urea + 40% N through FYM) 10.8 9.46 5.14 4.32
T5 (40 % N through Urea + 60% N through FYM) 11.0 9.89 5.45 4.44
T6 (20 % N through Urea + 80% N through FYM) 10.6 9.23 5.05 4.18
T7 (100% N through FYM) 10.4 8.36 4.42 3.94
C.D. (P=0.05) 0.4 0.13 0.03 0.03
37
38. Table 17: Effect of organic treatments on yield and quality parameters of guava cv.
Allahabad Safeda
Ram et al. (2007a)Lucknow, (Uttar Pradesh)
Treatments
Fruit weight
(g)
Fruit diameter (cm)
TSS
(%)
vermi-compost 5 kg 209.33 7.07 12.20
FYM- 20 kg + vermi-wash 126.66 6.15 11.06
FYM- 20 kg + BD-500 206.00 7.07 14.13
FYM- 20 kg + CPP-500 g 212.00 7.13 14.00
FYM- 20 kg + 250 g Azospirillum 128.66 5.91 13.40
FYM- 20 kg + 250 g Azotobactor 188.66 6.96 13.66
FYM- 10 kg + 5 Kg Ceil rich 145.22 6.22 16.20
NPK (350:200:350) g 170.00 6.70 13.53
C.D. (P=0.05) 75.55 0.83 3.03
CPP = Cow Pat Pit, BD-500 = Fermented cow dung 38
39. Table 18: Effect of different integrated nutrient treatments on yield and quality
attributes of guava cv. Sardar
Ram et al. (2007b)Lucknow, (Uttar Pradesh)
Nutrient combination (g) Number of fruit/plant Yield (kg/plant) TSS (°Brix) Reducing sugar (%)
NPK (500:200:500) 845 120.71 12.50 3.25
NPK (250:100:250) + 5 kg neem cake 696 87.0 12.65 3.41
NPK (250:100:250) + 10kg FYM 592 84.50 12.47 3.12
NPK (250:100:250) + Sesbenia as green manure 698 99.80 12.21 2.35
NPK (250:100:250) + Azotobactor 700 112.00 12.25 3.54
NPK (250:100:250) + Azospirillum 985 135.45 12.25 3.23
NPK (250:100:250) + 10 kg FYM +Azospirillum 854 132.45 12.50 3.50
NPK (250:100:250) + 10 kg FYM +Azotobactor 1200 150.25 13.50 3.58
NPK (500:100:500) 685 111.20 13.00 3.50
PK (100:250) + Azotobactor 878 128.50 12.50 3.20
PK (100:250) + Azotobactor 658 115.32 11.45 3.45
Control 560 80.50 11.25 3.28
C.D. (P=0.05) 290.12 98.35 1.00 0.20
39 Azotobactor and Azospirillum @ 250 g
40. Table 19: Effect of inorganic and bio-fertilizer on yield and yield attributes of guava cv.
Sardar
Dutta et al. (2009)Mohanpur, (West Bengal)
Treatments Length of fruit (cm)
Diameter of fruit
(cm)
Weight of fruit (g)
Yield
(kg/plant)
T1 = 100%N + 100%P + Azospirillum 9.4 8.8 248.5 45.07
T2 =50%N + 100%P + Azospirillum 6.7 6.2 181.5 34.19
T3 = 100%N + 100%P + VAM 8.7 8.3 225.8 38.78
T4 = 100% N + 50%P + VAM 9.1 8.4 230.3 49.14
T5 = 100% N + 100%P + Azospirillum + VAM 9.5 8.9 255.0 51.26
T6 = 50%N + 50%P + Azospirillum + VAM 7.1 6.6 190.8 40.14
T7 = 100%N + 100%P 8.5 8.1 220.5 50.29
T8 = 50% N + 50%P 6.4 6.0 162.0 36.94
T9 (Control) 6.3 5.9 142.1 23.42
C.D. (P=0.05) 0.15 0.22 7.47 2.700
40
100% N = 260 g N, 100% P = 320 g P, Azospirillum and VAM @ 30 g/plant
41. Table 20: Effect of NPK on yield and quality attributes of guava cv. Allahabad Safeda
Kumar et al. (2009)Bhubaneswar, (Orissa)
Treatments (g)
Number of fruit/
tree
Yield (kg/tree) Fruit size (cm) TSS (°Brix)
N1- 300 340.90 35.45 7.06 x 6.88 12.49
N2- 600 380.55 38.12 7.28 x 7.06 12.57
N3- 900 406.86 42.61 7.46 x 7.08 12.72
C.D. (P=0.05) 35.67 4.35 - NS
P1- 300 355.74 34.78 7.21 x 6.94 12.49
P2- 600 396.11 36.97 7.32 x 7.03 12.62
C.D. (P=0.05) NS NS - NS
K1- 300 342.76 36.90 7.15 x 7.02 12.44
K2- 600 377.62 41.75 7.33 x 7.13 12.63
K3- 900 412.42 45.45 7.39 x 7.18 12.88
C.D. (P=0.05) 35.67 4.35 - 0.35
Control 293.63 25.25
6.30 x 6.20
12.38
41
42. Table 21: Effect of FYM, Urea and Azotobactor on yield and yield parameters of guava cv. Sardar
Treatment Yield (kg/plant) Length (cm) Diameter (cm) Fruit weight (g)
T1 – 100% N through FYM 24.74 7.73 7.44 153.65
T2 - 75% N through FYM + 25% N through
Inorganic fertilizer
26.30 7.80 7.47 156.66
T3 - 50% N through FYM + 50% N through
In-organic fertilizer
34.16 7.97 7.60 176.60
T4 - 25% N through FYM + 75% N through
Inorganic fertilizer
36.61 8.16 7.72 188.40
T5 - 100% N through Inorganic fertilizer 32.97 7.87 7.52 170.91
T6 – Azotobactor 22.30 7.56 7.20 137.96
T7 –Azotobactor + T1 29.55 7.80 7.49 169.05
T8 –Azotobactor + T2 35.05 7.98 7.64 187.06
T9 – Azotobactor +T3 38.70 8.27 7.80 197.40
T10 – Azotobactor + T4 41.14 8.39 7.94 244.24
T11 – Azotobactor +T5 38.95 8.32 7.86 239.00
T12 - Absolute 18.86 7.34 7.15 128.17
C.D. (P=0.05) 6.27 0.13 0.12 1.33
Jammu, (Jammu & Kashmir) Sharma et al. (2013)42 Azotobactor 200 g/plant
43. Table 22: Effect of FYM, Urea and Azotobactor on biochemical parameters of guava cv. Sardar
Treatment TSS (°Brix) Total sugar (%) Reducing sugar (%)
Non- Reducing sugar
(%)
T1 – 100% N through FYM 11.89 7.59 4.46 2.98
T2 - 75% N through FYM + 25% N through
Inorganic fertilizer
12.43 7.75 4.50 3.08
T3 - 50% N through FYM + 50% N through
Inorganic fertilizer
12.62 8.08 4.66 3.25
T4 - 25% N through FYM + 75% N through
Inorganic fertilizer
12.49 7.90 4.61 3.13
T5 - 100% N through Inorganic fertilizer 12.35 7.76 4.53 3.07
T6 – Azotobactor 11.73 7.42 4.32 2.77
T7 –Azotobactor + T1 12.12 7.65 4.52 2.97
T8 –Azotobactor + T2 12.67 8.20 4.73 3.30
T9 – Azotobactor + T3 12.95 8.61 4.83 3.58
T10 – Azotobactor + T4 12.86 8.55 4.81 3.56
T11 – Azotobactor + T5 12.70 8.24 4.75 3.31
T12 - Absolute 11.58 7.10 4.23 2.73
C.D. (P=0.05) 0.03 0.10 0.02 0.07
Jammu, (Jammu & Kashmir) Sharma et al. (2013)43 Azotobactor 200 g/plant
49. Table 24: Effect of pruning intensity on sprouting and yield attributes of guava cv.
Sardar
Pruning
intensity
Days to new
sprouting
Number of
fruits/shoot
Fruit length
(cm)
Fruit
breadth
(cm)
Fruit
weight (g)
Yield (kg/tree)
15 cm 9.8 3.0 6.1 5.9 137.6 104.7
30 cm 8.8 3.8 7.0 6.6 168.0 131.0
60 cm 8.0 4.0 6.8 6.5 164.2 131.8
Control 12.6 2.8 5.6 5.4 125.6 81.1
C.D.
(P=0.05)
1.2 0.8 0.3 0.3 14.5 37.5
Hisar, (Haryana) Mohammed et al (2006)Pruning from top portion in May 49
50. Table-25: Effect of time of pruning on yield and yield attributes of guava cv. Sardar
Time of pruning Number of fruits/plant) Yield (kg/plant)
March 275.25 71.58
April 290.00 78.28
May 94.25 26.38
June 29.75 6.98
July 17.75 3.70
Control (Unpruned) 196.5 37.33
C.D. (P=0.05 48.424 12.363
Basu et al. (2007)Mohanpur, (West Bengal) 50 Pruning in year 2003
51. Table 26: Effect of various pruning treatment on crop regulation of guava cv.
Allahabad Safeda
Treatments Yield (kg/tree) TSS (ºBrix)
T1 - (Heading back of current season shoot) 100.91 8.85
T2 - (Total pruning of bearing portion of current season shoot) 104.98 9.12
T3 -( Half Heading back of terminal branches to half length) 29.74 8.87
T4 - (Control no pruning) 7.78 7.45
C.D. (P=0.05) 36.03 0.77
Bahadurgarh, (Punjab) Singh et al (2007)51 Pruning at first week of May
52. Table-27: Effect of pruning on yield and quality attributes of guava cv. Sardar under
ultra high density planting system (1 x 2m)
Treatments Fruit weight (g) Yield (t/ha)
T1 - (No pruning) 108.25 19.06
T2 - (80% pruning in May) 122.32 22.56
T3 - (60% pruning in May) 119.45 20.58
T4 - (80% pruning in October) 129.94 12.11
T5 - (60% pruning in October) 130.01 9.25
T7 - (pruning three times in a year) 110.60 23.26
C.D. (P=0.05) 9.04 3.06
Mehta et al. (2012)Ranchi, (Jharkhand) 52 Thrice pruning at March, May, and October
53. Table-28: Influence of pruning intensity on yield parameters of guava cv. Sardar
Treatment
(Pruning intensity)
Duration of flowering (Days) Number of fruits Yield (kg/tree)
0-node 41 258.0 31.0
2- node 38.5 284.0 36.4
4- node 37 308.0 40.0
6- node 34 456.5 59.5
8- node 32 349.5 46.5
10- node 30.9 304.5 46.1
C.D. (P=0.05) 2.16 8.36 1.95
Singh (2012)Muktsar, (Punjab) 53 Regular pruning in first week of march from top portion
54. Table 29: Effect of various pruning intensity on fruit quality of guava cv. Sardar
Treatments (cm)
Fruit diameter
(cm)
Fruit weight
(g)
Yield
(kg/tree)
TSS
(ºBrix)
Total Sugar
(%)
No Pruning (0) 5.89 221.3 5.98 8.43 7.56
Light (7.10) 6.15 245.6 8.70 9.08 8.73
Moderate (5.86) 6.45 298.1 9.60 9.82 8.81
Severe (4.81) 7.15 300.2 11.66 10.1 9.12
Mean 6.41 266.30 8.99 9.36 8.56
Basar, (Arunachal Pradesh) Bhagwati et al (2015)54 Pruning at first week of May
56. Crop regulation
Sr.
No.
Bahar Flowering Fruiting Quality
1. Ambe Feb. –March July – Sept. Watery, Poor
2. Mrig June – July Nov. - Jan. Excellent
3. Hast October Feb. - April Good, Yield
Low
3 Crop/year (Maharashtra and Tamilnadu)
In North India Mrig Bahar is preferred
In South India Hast Bahar is preferred
In Gujarat Mrig Bahar is preferred
56
57. Table 30: Effect of foliar application of chemicals for maximizing yield and fruit quality of guava
Treatments
Allahabad Safeda Sardar
Yield (kg/plant) Fruit weight (g) Yield (kg/plant) Fruit weight (g)
Urea (10%) 18.5 116.3 10.6 151.9
Urea (20%) 22.4 111.1 7.5 134.5
NAA (100 ppm) 24.3 108.2 11.4 145.7
NAA (200 ppm) 28.1 113.0 22.9 146.5
2,4-D (40 ppm) 27.6 109.1 9.4 143.1
2,4-D (60 ppm) 28.0 109.1 15.0 147.8
KI (1%) 27.3 115.3 17.8 161.2
KI (2%) 16.3 110.5 10.9 154.2
Control, 13.5 112.7 5.0 146.2
C.D. (P=0.05) 8.69 NS 3.29 19.7
Das et al. (2007)Ranchi, (Jharkhand)
Spray twice (mid-April and first week of May) @ 3 ltr/plant/spray
57
58. Table 31: Effect of NAA, flower bud thinning and pruning on yield and yield attributes of
guava cv. Sardar
Treatments
Number of flower
bud /branch
Number of fruit set
/branch
Yield (kg/tree)
T1- NAA @ 600ppm 38.00 30.75 65.00
T2- NAA @ 800ppm 42.00 32.25 84.00
T3- Flower bud thinning 30.00 24.50 76.00
T4- One leaf pair pruning 43.00 36.00 88.00
T5- Two leaf pair pruning 33.00 27.25 61.00
T6- Control 3.50 2.77 4.50
C.D. (P=0.05) 7.94 5.42 8.27
Pantnagar, (Uttrakhand) Tiwari and Lal (2007)58Spray at 1st week of May
66. Table 36: Effect of different doses of gamma radiation and chemicals on chemical
composition of guava fruits
Treatments TSS (ºBrix) Acidity (%)
Vitamin-C
(mg/100g)
Reducing
sugar (%)
Non-reducing
(%)
Total sugar
(%)
Marketable
fruits (%)
Control 12.8 0.14 192.6 4.3 4.0 8.3 8.00
50 Gy 13.0 0.12 199.2 4.3 4.0 8.3 53.84
100 Gy 13.6 0.12 204.8 5.0 4.6 9.6 57.14
200 Gy 12.8 0.24 203.2 4.8 4.3 9.1 24.0
300 Gy 13.6 0.25 201.6 4.3 4.0 8.3 2.66
1 KGy 12.3 0.25 190.6 4.4 4.2 8.6 0.00
2 KGy 12.6 0.24 178.9 4.0 4.0 8.0 0.00
3 KGy 11.3 0.24 164.0 3.9 3.4 7.3 0.00
C.D.
(P=0.05)
0.84 0.2 24.1 0.4 0.4 0.5 -
Jabalpur, (Madhya Pradesh) Baghel et al. (2005)Observation recorded at 12 Days after storage 66
67. Table 37: Effect of pre-harvest application of calcium compounds on bio-chemical
composition of guava cv. Sardar
Treatments TSS (ºBrix) Reducing sugar (%) Pectin (%) Shelf-life (Days)
CaCl2 0.5% 11.60 2.82 0.30 8.67
CaCl2 1.0% 11.57 3.07 0.37 9.00
Ca(NO3) 2 0.5% 12.90 3.24 0.47 10.00
Ca(NO3) 2 1.0% 13.03 3.55 0.51 11.67
CaSO4 0.5% 11.53 2.15 0.30 7.33
CaSO4 1.0% 11.60 2.23 0.30 7.67
Control 9.77 1.80 0.21 7.00
C.D. (P=0.05) 0.66 0.22 0.023 1.80
Hyderabad, (Andhra Pradesh) Jayachandran et al. (2005)
Spray at 15 days before harvest (15 year old) and observation recorded at 9th day after storage
67
68. Table 38: Effect of different doses of gamma radiation on chemical composition of
guava fruits
Treatments PLW (%)
Marketable fruit
retained (%)
TSS (ºBrix)
vitamin-C
(mg/100g)
Total sugar (%)
Control 27.7 13.3 13.1 190.0 7.2
50Gy 29.1 36.6 14.0 195.3 8.1
100Gy 24.7 53.3 14.3 201.3 9.4
200Gy 28.8 26.6 11.3 176.3 6.9
250Gy 29.6 20.0 11.1 165.6 6.1
CC-250ppm 24.4 50.0 15.2 194.0 8.6
CC-500ppm 22.9 60.0 15.8 201.0 9.0
CC-750ppm 24.0 40.0 14.7 192.6 9.0
MH-250ppm 24.8 30.0 14.8 200.3 9.2
MH-500ppm 25.9 43.3 15.4 201.7 9.4
MH-750ppm 29.7 23.3 14.2 187.7 9.4
Mustard oil 17.3 60.0 15.1 193.0 9.3
Coconut oil 7.1 100.0 16.1 195.0 10.0
Liquid paraffin 14.1 83.4 15.1 194.7 9.4
C.D. (P=0.05) 3.28 - 0.47 4.07 0.46
Pandey et al. (2010)Jabalpur, (Madhya Pradesh) 68Observation recorded at 12 Days after storage
69. Conclusion
Propagation Air layering with treatment of IBA @ 4000 ppm with combination of
rooting media Coco peat/Sphagnum moss found better for rooting
Planting HDP at 2.5 x 2.5 or 2.0 x 2.0 m gave more yield with better quality fruits
Manures and fertilizers Integrated nutrient management produce the highest yield with better quality
fruits
Irrigation Irrigation 100 % IW/CPE with NPK (60:30:30 g) combination found better for
quality characters
Pruning/Rejuvenation Pruning intensity 60 cm and April is as time of pruning found better for quality
production
Crop regulation One leaf pair pruning and spraying of KI @ 1 % or NAA @ 200 ppm produce
highest yield
Growth regulators/micro-nutrients Spraying of NAA @ 60 ppm, urea @ 1%, K2SO4 @ 1%, GA3 @ 50ppm,
ethephon @ 400 ppm and ZnSO4 @ 0.4 % found better for quality parameters
Post-harvest management Spraying of Ca(NO3) 2 1.0% and fruit treatment with 100 Gy, Coconut oil found
better for increasing shelf-life and fruit quality
69
70. Future thrust
Crop Improvement-
Need to develop variety having less and soft seed as well as
seedless cultivar
Need to develop High yielding, early bearing having good quality,
high keeping quality and insect-pest and disease resistant
varieties
Need to develop dwarfing rootstock for high density planting
Crop production-
Need to Standardization of training and pruning practices for HDP
Post-harvest technology-
Need to Standardization of packaging techniques and Post harvest
techniques
70
71. for
Your
Attention
Your right is to work
only,
but never with its
fruits;
let not the fruits of
actions
be your motive,
nor let your
attachment
be to inaction
--The Great Geeta