Groundnut haulm quality as affected by cercospora leaf spot severity

• Autorzy: Bdliya B S

Warianty tytułu

PL

Jakosc naci orzecha ziemnego w uzaleznieniu od nasilenia cerkosporozy lisci

• Języki publikacji: EN

Abstrakty

EN

The effect of cercospora leaf spot caused by Cercospora arachidicola i Phaeoisariopsis personata on quality of groundnut haulm was assessed using official methods of analysis. The respective field experiments were conducted in 2004 and 2005 cropping seasons, while the laboratory analyses were carried out at the end of the seasons. The scale of 1-9 was used to determine severity of infection on randomly selected groundnut plants. The results showed that the year effect was not significant as related to haulm composition. However, severity of the disease was found to affect haulm composition either negatively or positively. Crude fibre, crude protein, fat and dry matter content of haulm were significantly lower in severely infected haulm samples compared to uninfected or less severely infected samples. While ash, moisture content and nitrogen free extracts (NFE) increased with increasing disease severity. The regression analysis showed that crude fibre, crude protein, fat and dry matter content were negatively related to cercospora leaf spot severity, while ash, moisture content and nitrogen free extracts showed positive relationship with increasing disease severity. Since infection by cercospora leaf spot pathogen lowers the quality of groundnut haulm, controlling the disease is necessary to ensure good quality of haulm at the end of the season.

PL

Wpływ cerkosporozy liści wywoływanej przez Cercospora arachiocola i Phaeoisariopsis personata na jakość naci orzecha ziemnego badano wykorzystując oficjalnie przyjęte metody analizy. Doświadczenia polowe prowadzono w sezonach wegetacyjnych lat 2004 i 2005, natomiast analizy laboratoryjne wykonywano pod koniec sezonów wegetacji. Do określania nasilenia porażenia wykorzystano 9-stopniową skalę. Skład naci orzecha ziemnego nie był uzależniony od lat badań. Natomiast wykazano, że nasilenie porażenia miało negatywny lub pozytywny wpływ na jej skład. Mianowicie zawartość surowego włóknika, surowego białka, tłuszczu i suchej masy naci były istotnie niższe w próbach silnie porażonych w porównaniu do nieporażonych lub porażonych w niższym stopniu prób. Natomiast zawartość popiołu, wilgoci oraz wyciągów bezazotowych wzrastała wraz ze wzrostem nasilenia porażenia. Również analiza regresji wykazała negatywną zależność pomiędzy zawartością surowego włóknika, surowego białka, tłuszczu i suchej masy nasileniem cerkosporozy liści, natomiast pozytywną zależność stwierdzono pomiędzy wzrostem nasilenia tej choroby a zawartością wilgoci, popiołu i wyciągów bezazotowych. W związku z negatywnym wpływem cerkosporozy na jakość naci orzecha ziemnego zbieranej w końcu okresu wegetacyjnego konieczne jest chemiczne zwalczanie tej choroby.

Słowa kluczowe

EN

groundnut; haulm; quality; Cercospora; leaf spot disease; plant disease

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2007
• Tom: 47
• Numer: 3
• Strony: 231-242
• Opis fizyczny: p.231-241,fig.,ref.

Twórcy

autor

Bdliya B S

• University of Maiduguri, P.M.B. 1069, Maiduguri, Nigeria

Bibliografia

• AOAC. 1997. Official Methods of Analysis. 16th ed. Association of Official Analytical Chemist (AOAC) Washington D.C., 1018 pp.
• Bandyopadhyay R., Pande S.; Blummel M., Thomas D., Rama Devi K. 2001. Effect of plant disease on yield and nutritive value of sorghum and groundnut crop residues. In: "Proceedings of the 10th Animal Nutrition Conference". Karnal India, November 9-11, 2001,28 pp.
• Delgado C., Rosegrant M., Steinfeld H., Ehui S., Courbois C. 1999. Livestock to 2020: the next food revolution. Food, Agriculture and the Environment: Discussion Paper No. 28. IFPRI/FAO/ILRI, Washington D.C., 72 pp.
• Etela I., Larbi A., Olorunju P.E., Dung D.D., Oji U.I. 2000. Yield and fodder quality of dual-purpose groundnut genotypes fed to West African dwarf sheep. J. Anim. Sci. 84 (Suppl. 1), p. 459.
• Hacina C., Kannaiyan J. 1990. Prevalence of groundnut diseases and extent of yield losses due to leaf spot diseases in Zambia, p. 93-97. In: "Proceedings of the Fouth Regional Groundnut Workshop for Southern Africa". Arusha, Tanzania, 10-15 September, 1990.
• ICRISAT 1991. International Crops Research Institute for the Semi Arid Tropics, Sahelian Centre, West African Programmes. Annu. Rep., 70 pp.
• Knauft D.A., Gorbet D.W., Norden A.J. 1988. Yield and market quality of seven peanut genotypes as affected by leaf spot disease and harvest date. Peanut Sci. 15: 9-13.
• Kwari I. D., Abator F. 2007. Personal communication with ruminant animal specialists and lecturers in the Department of Animal Science, University of Maiduguri, Nigeria.
• Larbi A., Dung D.D., Olorunju P.E., Smith J.W., Tanko R.J., Muhammad I.R., Adekunle I.O. 1999. Groundnut for food and fodder in crop-livestock systems: forage and seed yields, chemical composition and rumen degradation of leaf and stem fractions of 38 cultivars. Anim. Feed Sci. Technol. 77: 33-47.
• Lenne J.M. 1986. Recent advances in the understanding of anthracnose of Stylosanthes in tropical America. In: "Proceedings of the XV International Grasslands Congress". Kyoto, Japan, 5-10 August, 1985: 773-775.
• Lenne J.M., Calderon M. 1989. Pest and disease problems of a Andropogon gayanus Kunth.: A grass for tropical acid soils. CIAT, Cali, Colombia: 247-276.
• McDonald D., Fowler A.M. 1976. Control of cercospora leaf spot disease of groundnut (Arachis hypogaea) in Nigeria. Niger J. Plant Prot. 2: 43-59.
• Mclntire J., Bourzat D., Pingali P. 1992. Crop-livestock interaction in Sub-Saharan Africa. The World Bank, Washington, D.C., 125 pp.
• Moreno J., Torres G.C., Lenne J.M. 1987. Reconocimiento y evaluacion de enfermedales de leucaena en el Valle de Cauca. Colombia. Pasturas Tropicales 9: 30-35.
• Njie M., Reed J.S. 1995. Potential of crop residues and agricultural products for feeding sheep in Gambian village. Anim. Feed Sci. Technol. 52: 312-323.
• Pande S., Narayana Rao I., Upadhyaya H.D., Lenne J.M. 2001. Farmers' participatory integrated management of foliar diseases in groundnut. Int. J. Pest Manage. 47:121-126.
• Pande S., Bandyopadhyay R., Blummel M., Narayana Rao J., Thomas D., Navi S.S. 2003. Disease management factors influencing yield and quality of sorghum and groundnut crop residues. Field Crops Res. 84: 89-103.
• Rama Devi K., Bandyopadhyay R., Hall A.J., Indra S., Pande S., Jaiswal P. 2000. Farmers' perception of the effects of plant diseases on the yield and nutritive value of crop residues used for peri-urban dairy production on the Deccan Plateau: findings from participatory rural appraisals. International Crops Research Institute for Semi-arid Tropics, Patancheru, Andhra Pradesh, India. Information Bull. 60,39 pp.
• Subrahmanyam P., McDonald D., Walliyar F., Raddy L.J., Nigam S.N., Gibbons R.W., Rammanatha R.V., Singh A.K., Pande S., Reddy P.M., Subba Rao P.V. 1995. Screening methods and sources of resistance to rust and late leaf spot of groundnut. Information Bull. 47. ICRISAT, Patencheru, India, 20 pp.
• Zerbini E., Thomas D. 1999. Plant breeding strategies for improving the feed resources for ruminants, p. 189-202. In: "Emerging trends for Livestock and Poultry Feeding Beyond 2000 AD" (K.K. Singhal, S.S. Rai, eds.). Animal Nutrition Society of India and Indian Council of Agricultural Research.