Edache, for their encouragement and support to undertake this case study. The financial support provided by the Federal Government for this study and the development of cassava in Nigeria, particularly the Cassava Multiplication Project CMP is acknowledged. Thanks are also expressed to Mr Felix I. The study was carried out using a combination of approaches, intensive use of literature review and quantitative secondary data and Rapid Rural Appraisal methodology.
Common pteromalid parasites found in the Tropics include Anisopteromalus calandrae, Lariophagus distinguendus and Choetospila elegans [Theocolax elegans]. Impact Top of page Introduction S.
It does not often breed in noncereal foods, although it does attack split peas and pasta. It can attack cereal plants in the fields.
Voracious feeding on whole grains by this insect results in weight loss, fungal growth, quality loss through an increase in free fatty acids and it can even completely destroy stored grain in all types of storage.
Invasion by this primary pest may cause grain heating and may facilitate the establishment of fungal colonies, secondary insect pests, and mite pests. Subsequent infestations in storage result from the transfer of infested grain into stores or from the pest flying into storage facilities, probably attracted by the odour of the stored grain.
Generally, both adults and larvae feed on whole cereal grains, including wheat, rice, barley, maize, groundnuts, cassava, beans, millet, and sorghum; but the females can lay eggs and develop on solid products made of cereals, such as pasta.
Barley Boles and Pomeranz reported a wide variation in numbers of progeny observed among barley samples from different locations as well as among samples of individual varieties. Blue aleurone-layered barleys produced slightly fewer progeny of S. In Egypt, weight losses attributable to S. Losses in stored grains of five high-yielding hybrid varieties of maize were determined in Uttar Pradesh, India, by Karan Singh et al.
Significant differences in weight loss were found between the varieties and varied from 1. Rodriguez reported damage to stored maize in the Mexican state of Yucatan. When 1-day-old adults of S. Loss in weight and viability in five maize hybrids revealed a significant difference due to hybrids, pests and their interactions Kurdikeri et al.
Percentage seed damage and loss in weight increased with the increase in storage period in all the maize hybrids, while the viability of seeds decreased Kurdikeri et al. Matioli reported that weight loss, frass volume and percentage of damaged grains varied according to the variety of maize.
Pericarp hardness was associated with resistance at low rates of infestation, but at higher infestation rates, carbohydrate content seemed to be more important. According to the variety concerned, the endosperm, pericarp and embryo were the preferred food De and Prakash, Rice According to Rubbi and Begumin Bangladesh the population of Sitotroga cerealella was highest, followed by S.
In India, stored rice unhusked samples, drawn from six districts of Himachal Pradesh, were infested with S. The effect of feeding by larvae and adults of S. Sorghum In Maharashtra, India, some hybrids and varieties of sorghum were less susceptible to attack by S.
The relative resistance of 36 improved and local sorghum varieties were also assessed in Nigeria at Samaru Bamaiyi et al. The loss in grain sample weight from damage by S. Weight loss in sorghum grains in large and small grains was 0. Threshed grain was more susceptible than unthreshed grain; more progeny were produced on threshed than on unthreshed sorghum Wongo and Pedersen, Wheat On wheat after 65 days, the average proportion of damaged grains ranged from 0.
A survey in Uttar Pradesh, India, showed that the weight loss after storage for 6 months varied from 0. In 12 districts of the Indian Punjab, after about months storage on the farm, the weight loss was about 2.
In the UK, wheat grain infested with S. Levchenko and Imshenetskii reported that of 10 wheat varieties studied, there were significant differences in the damage done by S. In the tropics, cereal grain insects including S. In Ethiopia, the major species of stored product pests include S.
A weight loss of 4. Other Crop Losses Bandyopadhyay and Ghosh investigated the loss of stored rice and wheat under different climatic conditions in West Bengal, India. Grain damage was found throughout the year in all the localities, and ranged from 3 to In Egypt, on local maize, millet and wheat varieties in storage, the relationship between total infestation and external infestation, weight loss, the number of insect fragments in milled grain and the moisture content of the kernels were investigated by Omar and Kamel Abstract: Congenital abnormalities can develop at any time after the first month of pregnancy.
From conception to birth, the embryo, and the fetus have to adapt, at a molecular and transcriptional level, to various changes in their cellular mileau. Due to a technical issue, we are unable to display some subscription pricing.
In the meantime, please contact our customer service department to purchase a subscription. More evidence is needed to rate the effectiveness of cassava for these uses. Side Effects. Side Effects & Safety Comparison of the effects of cassava (Manihot esculenta Crantz) organic cyanide.
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The effectiveness of Vigna unguiculata as a phytoremediation plant in the remediation of crude oil polluted soil for cassava cultivation was carried out. Background.
Cassava (also known as manioc or yucca) is a vegetable that grows in tropical countries. It is an important food source for an estimated million people worldwide, especially in .