Survey of orobanche in vegetable crops in Khartoum State

• Published in: Sudan Journal of Agricultural Research (Sudan) Vol. 18
• Main Authors: Donogla, D.G., Agricultural Research Corporation, Shambat Research Station, Khartoum (Sudan), Mohamed, E.S., Agricultural Research Corporation, Shambat Research Station, Khartoum (Sudan), Hamada, A.A., Agricultural Research Corporation, Shambat Research Station, Khartoum (Sudan), Babiker, A.G., Agricultural Research Corporation, Shambat Research Station, Khartoum (Sudan)
• Format: Journal Article
• Language: English
• Published: 2011
• Subjects: AUBERGINE; AUBERGINES; BERENJENA; DAUCUS CAROTA; ENCUESTAS; ENFERMEDADES DE LAS PLANTAS; ENQUETE; HORTALIZAS (PLANTAS); http://www.fao.org/aos/agrovoc#c_2132; http://www.fao.org/aos/agrovoc#c_4475; http://www.fao.org/aos/agrovoc#c_5426; http://www.fao.org/aos/agrovoc#c_5919; http://www.fao.org/aos/agrovoc#c_5962; http://www.fao.org/aos/agrovoc#c_7221; http://www.fao.org/aos/agrovoc#c_7497; http://www.fao.org/aos/agrovoc#c_7537; http://www.fao.org/aos/agrovoc#c_8165; http://www.fao.org/aos/agrovoc#c_8998; LYCOPERSICON ESCULENTUM; MALADIE DES PLANTES; OROBANCHACEAE; PIPER NIGRUM; PLANT DISEASES; PLANTE LEGUMIERE; SOLANUM TUBEROSUM; SOUDAN; SUDAN; SURVEYS; VEGETABLE CROPS
• ISSN: 1561-770X

Field surveys were undertaken during seasons 2004/05 _ 2006/07 in Khartoum state along River Nile, White Nile and Blue Nile banks to assess the incidence of Orobanche ramosa and crop yield losses. Structured questionnaire was prepared and distributed to farmers on practices pertaining to the parasite. The results of the surveys indicated that in all locations the species of broomrape was Orobanche ramosa. The major hosts were tomato, potato, eggplant, carrot and pepper with tomato and potato being the most infested. Along the River Nile banks, the production system is characterized by mono-cropping of potato and tomato which lead to severe infestation and yield losses may reach 100%. Proper control measures are practiced. However, some farmers hand pulls Orobanche after flowering, but they leave plants in the fields. Along the White Nile banks, farmers raise crops under residual soil moisture. Eggplant and tomatoes are the major crops and eggplant represents 70% of the cropped area. Infestation by Orobanche and yield losses is lower than in other areas. Farmers practiced hand-pull Orobanche and addition of fertilizers for control. Survey along the Blue Nile banks revealed that farmers usually grow different crops but do not follow proper crop sequence. Major crops are tomato, onion, cucumber, alfalfa, carrot, eggplant and okra. The major hosts of Orobanche were tomato, carrot, eggplant and pepper. Infestation ranged between 60 _ 100% and losses in yield ranged from 40 _ 80%. The agricultural schemes i.e. Elsellate, Alban Kuku, Soba- West, Om- Arda, Waha, Elshaab and Gomea are characterized by fodder production, mainly Abu-sabeen and alfalfa. Production of vegetables includes okra at Gomea Scheme. Since these crops are non-hosts for Orobanche, no infestation was detected