Papers by Hame Abdou Kadi Kadi, PhD
Journal of Agricultural Chemistry and Environment
Participatory varietal selection (PVS) with farmers and Seed Companies was conducted at Maradi re... more Participatory varietal selection (PVS) with farmers and Seed Companies was conducted at Maradi research station (07˚05'E/13˚48'N) and in farmer field to evaluate and select sorghum hybrid varieties for high yield and other important agronomic traits. The experimental design was a randomized complete block with three replications where flowering (days), plant height (cm) and yield (kg) were collected. The analysis of variance showed highly significance among treatments of all traits measured Environment and Genotype by Environment interactions also contributed significantly to the performance of yield components. The highest average grain yield was recorded from hybrids P9511A x ST9007-5-2-1 (4289 kg/ha), NE223A x 90SN1 (3666 kg/ha), NE223A x Sepon 82 (3533 kg/ha) and NE223A x P9405 (3519 kg/ha) across locations. Farmers' preferences were the panicle size, good seed set, earliness, and seed color. Hence, in a variety selection farmer's preferences focus more on prioritized yield-related trait. The best varieties ranked by traits of interest were P9511A x ST9007-5-2-1, NE223A x 90SN1, NE223A x P9405 and P9511A x SEPON 82 that performed well under their circumstances. The results showed that farmers' preferred varieties match with researchers. Therefore, based on objectively measured traits, farmers' preferences and the agro ecologies of the site, varieties NE223A x 90SN1 and P9511A x ST9007-5-2-1 were found promising for production.
Participatory varietal selection (PVS) with farmers and Seed Companies was conducted at Maradi re... more Participatory varietal selection (PVS) with farmers and Seed Companies was conducted at Maradi research station (07˚05'E/13˚48'N) and in farmer field to evaluate and select sorghum hybrid varieties for high yield and other important agronomic traits. The experimental design was a randomized complete block with three replications where flowering (days), plant height (cm) and yield (kg) were collected. The analysis of variance showed highly significance among treatments of all traits measured Environment and Genotype by Environment interactions also contributed significantly to the performance of yield components. The highest average grain yield was recorded from hybrids P9511A x ST9007-5-2-1 (4289 kg/ha), NE223A x 90SN1 (3666 kg/ha), NE223A x Sepon 82 (3533 kg/ha) and NE223A x P9405 (3519 kg/ha) across locations. Farmers' preferences were the panicle size, good seed set, earliness, and seed color. Hence, in a variety selection farmer's preferences focus more on prioritized yield-related trait. The best varieties ranked by traits of interest were P9511A x ST9007-5-2-1, NE223A x 90SN1, NE223A x P9405 and P9511A x SEPON 82 that performed well under their circumstances. The results showed that farmers' preferred varieties match with researchers. Therefore, based on objectively measured traits, farmers' preferences and the agro ecologies of the site, varieties NE223A x 90SN1 and P9511A x ST9007-5-2-1 were found promising for production.
Tomato is a major vegetable crop grown in Niger. It is also one of the most infested plants by in... more Tomato is a major vegetable crop grown in Niger. It is also one of the most infested plants by insect pests. To contribute to the control the pests, a study was conducted to test the effectiveness of Fyfanon 880 EC (Malathion 880 g/l) on the insect fauna of tomato at research station of the Agriculture college of Kollo. This product was compared to Cypercal (cypermethrin) taken as reference product. The results show that Fyfanon 880 EC, at the dose of 1 l/ha, significantly reduced the populations of insect pests and improved the yield of tomato compared to untreated control and Cypercal at 0.6 l / ha.
International Sorghum and Millets newsletter., 1999
untreated plots for each entry were paired in plots 0.9-m wide and 5.9-m long. One, 3-dichloropro... more untreated plots for each entry were paired in plots 0.9-m wide and 5.9-m long. One, 3-dichloropropene (1,3-D) Telone II was injected at 56.1 L ha-1 through a single chisel in one row per plot and bedded. The other row in each plot was left untreated and served as a control. Ten cores of soil (2.5-cm diameter x 25-cm deep) were collected from each row of each subplot on 9 July, 28 August (data not presented), and 8 October, and nematodes were extracted from a 150-cm 3 subsample for each plot by centrifugal flotation (Jenkins 1964), identified, and recorded. Results and discussion Numbers of nematodes in the soil were low on 9 July (2 weeks after the pearl millet was sown) in both treated and untreated plots, but as expected, tended to have lower values in Telone II treated plots (Table 1). Both M. incognita and P. minor numbers tended to increase at the 8 October sampling (more so in untreated than treated plots, as expected), but significant differences (P = 0.05) were only observed for M. incognita between treated and untreated plots of pearl millet hybrid 97-107 x 115. Numbers of M. incognita tended to increase more in the soil of plots growing hybrids with 115 as the male parent than those with 117 as the male parent. Plants in the treated plots were taller and greener than those in the untreated plots during the first month after sowing, but the differences gradually disappeared by anthesis. Significant grain yield differences were observed between treated and untreated plots for 9 of the 14 hybrids. Plants in untreated plots of 5 of the 9 hybrids yielded more grain than plants in the treated plots. Telone II treatment did not significantly affect grain yield in 5 of the hybrids. The data indicated differences existed for resistance to M. incognita and P. minor nematodes among the 14 pearl millet hybrids. The fibrous rooting system of pearl millet probably allows this crop to flourish under certain populations of nematodes as the plants matured, due to increased root branching, but this hypothesis needs further study. References Jenkins, W. R. 1964. A rapid centrifugal-flotation technique for separating nematodes from soil. Plant Disease Reporter 48: 692.
Journal of Applied Biosciences, 2014
International Sorghum and Millets newsletter., 1998
Titles in this Working Paper series aim to disseminate interim climate change, agriculture and fo... more Titles in this Working Paper series aim to disseminate interim climate change, agriculture and food security research and practices and stimulate feedback from the scientific community.
Global Environmental Change, 2017
The climate change research community's shared socioeconomic pathways (SSPs) are a set of alterna... more The climate change research community's shared socioeconomic pathways (SSPs) are a set of alternative global development scenarios focused on mitigation of and adaptation to climate change. To use these scenarios as a global context that is relevant for policy guidance at regional and national levels, they have to be connected to an exploration of drivers and challenges informed by regional expertise. In this paper, we present scenarios for West Africa developed by regional stakeholders and quantified using two global economic models, GLOBIOM and IMPACT, in interaction with stakeholder-generated narratives and scenario trends and SSP assumptions. We present this process as an example of linking comparable scenarios across levels to increase coherence with global contexts, while presenting insights about the future of agriculture and food security under a range of future drivers including climate change. In these scenarios, strong economic development increases food security and agricultural development. The latter increases crop and livestock productivity leading to an expansion of agricultural area within the region while reducing the land expansion burden elsewhere. In the context of a global economy, West Africa remains a large consumer and producer of a selection of commodities. However, the growth in population coupled with rising incomes leads to increases in the region's imports. For West Africa, climate change is projected to have negative effects on both crop yields and grassland productivity, and a lack of investment may exacerbate these effects. Linking multi-stakeholder regional scenarios to the global SSPs ensures scenarios that are regionally appropriate and useful for policy development as evidenced in the case study, while allowing for a critical link to global contexts.
2016 International Congress of Entomology, 2016
2016 International Congress of Entomology, 2016
The climate change research community's shared socioeconomic pathways (SSPs) are a set of alterna... more The climate change research community's shared socioeconomic pathways (SSPs) are a set of alternative global development scenarios focused on mitigation of and adaptation to climate change. To use these scenarios as a global context that is relevant for policy guidance at regional and national levels, they have to be connected to an exploration of drivers and challenges informed by regional expertise. In this paper, we present scenarios for West Africa developed by regional stakeholders and quantified using two global economic models, GLOBIOM and IMPACT, in interaction with stakeholder-generated narratives and scenario trends and SSP assumptions. We present this process as an example of linking comparable scenarios across levels to increase coherence with global contexts, while presenting insights about the future of agriculture and food security under a range of future drivers including climate change. In these scenarios, strong economic development increases food security and agricultural development. The latter increases crop and livestock productivity leading to an expansion of agricultural area within the region while reducing the land expansion burden elsewhere. In the context of a global economy, West Africa remains a large consumer and producer of a selection of commodities. However, the growth in population coupled with rising incomes leads to increases in the region's imports. For West Africa, climate change is projected to have negative effects on both crop yields and grassland productivity, and a lack of investment may exacerbate these effects. Linking multi-stakeholder regional scenarios to the global SSPs ensures scenarios that are regionally appropriate and useful for policy development as evidenced in the case study, while allowing for a critical link to global contexts.
Millet head miner adults ( l f: lm) from a laboratory colony were placed with freshly cut pearl m... more Millet head miner adults ( l f: lm) from a laboratory colony were placed with freshly cut pearl millet panicles into oviposition cages. Eggs were counted and kept in a petri dish until they hatched. Each neonate larva was put into a plastic cup containing 15 mL of an artificial or a millet-based diet. Numbers of surviving and dead larvae were recorded and used to construct life tables. Standard techniques developed by Southwood (1978) and Price (1997) were used to calculate the net reproductive rate of multiplication in terms of females produced/generation (Ro = alx mx) and cohort-generation time, a period during which offspring
were produced (Tc = al mx x /alx mx ).
2016 International Congress of Entomology, 2016
2016 International Congress of Entomology, 2016
An important constraint to sufficient food is post-harvest preservation of its quality and quanti... more An important constraint to sufficient food is post-harvest preservation of its quality and quantity. During storage, food grain and products are destroyed by insects and other pests. Insect pests significantly damage 5-35% of stored grain worldwide; damage is 40% or more in developing countries of the tropics such as Niger, West Africa. Increasing concern over pesticide residue in food has encouraged researchers to seek alternatives to synthetic pesticides. Botanicals are relevant for small-scale farmers during post-harvest storage of commodities (Dales 1996). In developing countries, botanicals have advantages over synthetic pesticides because they are gathered locally and can provide inexpensive pest control during storage. In a survey of assessment of farmers' knowledge of storage pests and control methods, eight plants with insecticidal effects were used as substitutes for chemical pesticides by farmers in Niger (Kadi Kadi et al. 2013). The objective of this study was to determine farmers knowledge on storage insect pests and management strategies used to control them. Results will help develop effective alternative methods to prevent damage by insect pests of stored grain.
In Niger, sorghum and millet are the two most important cereals in terms of acreage and annual pr... more In Niger, sorghum and millet are the two most important cereals in terms of acreage and annual production. The combined effects of biotic and abiotic stresses explains the low productivity of these crops in the country. In addition, various pests cause losses at postharvest. A survey was conducted to assess the farmers' knowledge on storage pests and control methods. The results show that moisture and humidity are the main constraints for storage for 82.5% and 100% of producers surveyed. Ants, termites and storage insects are recognized as storage pests of sorghum and millet by respectively 31.3%, 67.5% and 70.0% of respondents. No producer has cited birds as a constraint during storage. By contrast, 23.8% of producers recognize rodents as storage pests. Regarding chemical control, Phostoxin (tablet) and Actellic powder (2%) are the ones that are widely used. Eight plants with insecticidal effects are used as a substitute to chemical pesticides. Besides, Cenchrus biforus (Roxb.) is used to trap rodents. Overall, 8.8% of producers use inert materials (sand and ash) against insects.
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Papers by Hame Abdou Kadi Kadi, PhD
were produced (Tc = al mx x /alx mx ).
were produced (Tc = al mx x /alx mx ).