Susceptibility of the selected crops in storage to Sitophilus zeamais Motschulsky in southwestern Nigeria

• Autorzy: Babarinde S A , Sosina A. , Oyeyiola E.I.

Warianty tytułu

PL

Podatnosc niektorych magazynowanych plonow na wolka kukurydzowego [Sitophilus zeamais Motschulsky] w poludniowo-zachodniej Nigerii

• Języki publikacji: EN

Abstrakty

EN

Susceptibility of the selected Nigerian cultivars of twelve crops to Sitophilus zeamais Motschulsky was evaluated in the laboratory (28 ± 2°C temperature and 69 ± 5% relative humidity). The crops were: maize (Zea mays L.), millet [Pennisetum glaucum (L.) X R. Br.], sorghum [Sorghum bicolor (L.) Moench], rice (Oryza sativa L.), and yam (Dioscorea rotundata Poir). Others were cassava (Manihot esculenta Crantz), pepper (Capsicum annuum L.), cowpea [Vigna unguiculata (L.) Walp], groundnut (Arachis hypogaea L.), melon [Citrullus lanatus (Thunb.)], soybean [Glycine max (L.) Merr.] and bambara groundnut [Vigna subterranea (L.) Verdc]. The result of antixenosis prescreen shows that S. zeamais preferred cereals and tubers to legumes and oil crops. S. zeamais preference for maize was highest at 1, 24 and 48 hours after infestation (HAI) and was not significantly different from its preference for pepper, millet, sorghum and yam. At 48 HAI, S. zeamais preference for cereals, tubers and pepper was not significantly different. Soybean and bambara groundnut were the least preferred species. The highest level of damage was observed in cereals and tubers. Millet suffered significantly greater damage than maize at 2-8 weeks after infestation (WAI). Damage done to maize was not significantly different from damage done to tubers at 6 and 8 WAI. Pepper, legumes and oil crops suffered significantly lower levels of damage than maize throughout the experimental period. Cumulative number of adult was significantly higher in small-seeded cereals than maize and was of the order: sorghummilletrice. Cowpea, soybean and pepper did not support reproduction and longevity of S. zeamais. Longevity was best supported by cassava. The results show that in storage, cereals and tubers were more susceptible to S. zeamais infestation than legumes, spices and oil crops.

PL

W warunkach laboratoryjnych (temp. 28 ± 2°C; względna wilgotność 9 ± 5%) oceniono podatność wybranych nigeryjskich gatunków roślin na wołka kukurydzowego (Sitophilus zeamais Motschulsky). Roślinami tymi były: kukurydza (Zea mays L.), proso [Pennisetum glaucum (L.) X R. Br.], sorgo [Sorghum bicolor (L.) Moench], ryż (Oryza sativa L.) i słodkie ziemniaki (Dioscotea rotundata Poir). Ponadto przetestowano: maniok (Manihot esculenta Crantz), pieprz (Capsicum annuum L.) fasolę [Vigna unguiculata (L.) Walp], orzechy ziemne (Arachis hypogaea L.) melony [Citrullus lanatus (Thunb.)], soję [Glycine max (L.) Merr.] oraz orzechy Bambara [Vigna subterranea (L.) Verdc.]. Preferencja wołka w stosunku do kukurydzy była największa 1, 24 i 48 godzin po nalocie i nie różniła się istotnie od jego preferencji w stosunku do pieprzu, prosa, sorgo i słodkich ziemniaków. W 48 godzin po nalocie, preferencja S. zeamais w stosunku do zbóż, bulw i pieprzu nie różniła się istotnie. Soja i orzechy Bambara były najmniej preferowanymi gatunkami. Najwięcej szkód zaobserwowano w zbożach i bulwach. Proso ucierpiało znacznie bardziej niż kukurydza. W 2 i 8 tygodni po nalocie szkody w przypadku kukurydzy nie różniły się istotnie od uszkodzeń bulw. W okresie badań, pieprz, strączkowe i rośliny olejowe ucierpiały znacznie mniej niż kukurydza. Liczba dorosłych osobników była istotnie wyższa w przypadku roślin o małych nasionach niż dla kukurydzy i malała następująco: sorgo > proso > ryż. Fasola, soja i pieprz nie powodowały takiej reprodukcji i okresu życia S. zeamais. jak kukurydza. Najdłużej osobniki żyły na manioku. Wyniki wskazują, że podczas magazynowania, zboża i bulwy były bardziej podatne na wołka niż nasiona strączkowych i oleistych odmian roślin.

Słowa kluczowe

EN

susceptibility; crop; storage; Sitophilus zeamais; maize weevil; greater rice weevil zob.maize weevil; beetle; Curculionidae; Nigeria

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2008
• Tom: 48
• Numer: 4
• Opis fizyczny: p.541-550,fig.,ref.

Twórcy

autor

Babarinde S A

• Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Nigeria

autor

Sosina A.

autor

Oyeyiola E.I.

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