TABLE 52 Citrus species and varieties affected by infectious diseases in the Sudan
Species and varieties on sour orange rootstock unless otherwise stated | Gummy bark | Cachexia | Bark gumming (Kassala disease) | Psorosis young leaf symptoms | Concave gum-Blind pocket | Scaly bark psorosis | Pop-corn | Exocortis | Stubborn | Phytophthora gummosis | Rio Grande gummosis |
Sweet orange var. | |||||||||||
Atbara | (1) | ||||||||||
Balady | (1)(3) | (1) | (1)(3) | (1) | (1) | (1) | (1)(3) | (1) | |||
Gebeit | (1) | (1) | |||||||||
Navel | (3) | (1)(3) | (3) | ||||||||
Nouri (Jaffa) | (3) | ||||||||||
Sinhari | (1) | ||||||||||
Succari | (1) | ||||||||||
Valencia | |||||||||||
Valencia on sweet lime | (1)1 | (1) | |||||||||
Mandarin var. | |||||||||||
Balady (Willowleaf) | (1)(3) | (1) | (1) | (1) | |||||||
Yussef Effendi | (2) | ||||||||||
Grapefruit var. | |||||||||||
Foster pink | (3) | (1) | (1) | (1) | (1)(3) | (3) | (1)(3) | ||||
Foster pink on: | |||||||||||
- C. macrophylla | (2)1 | ||||||||||
- Rangpur lime | (2)1 | (2)1 | |||||||||
- Carrizo citrange | (3)1 | ||||||||||
- Savage citrange | (3)1 | ||||||||||
Marsh seedless | (3) | (1) | (1)(3) | ||||||||
White marsh on citron | (1)1 | ||||||||||
Duncan | (1) | ||||||||||
Pomelo | (1)(3) | (1) | (1) | ||||||||
Balady lime | (1)(3) | (1) |
Key:
(1) The disease was seen by Childs, 1964.
(2) The disease was seen by Krezdorn, 1983.
(3) The disease was seen by Bové, 1986.
Note:
1 Symptoms were seen on the rootstock.
TABLE 53 Average maximum and minimum daily temperature (°C)
Location (alt. in m) | Month |
||||||||||||
J |
F |
M |
A |
M |
J |
J |
A |
S |
O |
N |
D |
||
Addis Ababa (2400) | Max.T | 26 | 27 | 27 | 28 | 28 | 21 | 25 | 24 | 24 | 26 | 25 | 25 |
Min.T | 3 | 5 | 7 | 7 | 7 | 8 | 8 | 8 | 7 | 5 | 3 | 3 | |
Asmara (2340) | Max.T | 24 | 24 | 24 | 26 | 26 | 26 | 27 | 23 | 23 | 22 | 22 | 22 |
Min.T | 10 | 11 | 12 | 13 | 13 | 13 | 14 | 13 | 13 | 11 | 10 | 8 | |
Atbara (346) | Max.T | 31 | 32 | 36 | 39 | 42 | 43 | 41 | 39 | 41 | 39 | 35 | 32 |
Min.T | 14 | 15 | 18 | 21 | 25 | 27 | 27 | 26 | 26 | 24 | 19 | 16 | |
Dongola (375) | Max.T | 28 | 29 | 34 | 39 | 42 | 43 | 42 | 42 | 41 | 39 | 33 | 29 |
Min.T | 9 | 10 | 14 | 18 | 23 | 24 | 25 | 26 | 25 | 21 | 15 | 11 | |
El Fasher (730) | Max.T | 32 | 33 | 36 | 38 | 39 | 39 | 36 | 33 | 36 | 37 | 34 | 32 |
Min.T | 10 | 12 | 14 | 18 | 21 | 22 | 22 | 21 | 20 | 18 | 13 | 10 | |
Juba | Max.T | 37 | 38 | 37 | 36 | 33 | 33 | 31 | 31 | 33 | 34 | 36 | 37 |
Min.T | 20 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | |
Kassala (529) | Max.T | 35 | 36 | 39 | 41 | 42 | 40 | 36 | 34 | 36 | 19 | 38 | 35 |
Min.T | 16 | 16 | 19 | 22 | 25 | 25 | 23 | 23 | 23 | 23 | 21 | 17 | |
Khartoum (378) | Max.T | 32 | 34 | 38 | 41 | 42 | 41 | 38 | 37 | 39 | 40 | 36 | 33 |
Min.T | 16 | 16 | 19 | 22 | 25 | 26 | 25 | 24 | 25 | 24 | 20 | 17 | |
Nairobi (1661) | Max.T | 25 | 26 | 25 | 24 | 22 | 21 | 21 | 21 | 24 | 24 | 23 | 23 |
Min.T | 12 | 13 | 14 | 14 | 13 | 12 | 11 | 11 | 11 | 13 | 13 | 13 |