In the lack of a suitable control strategy, sorrel seeds are heavily damaged by S. niger during the storage. Better post-harvest management will make it possible to add value to this legume and make it available throughout the year. The aim of this study was to gain a better understanding of the various post-harvest practices applied to sorrel seeds, from harvesting to storage, with a view to implementing an effective control strategy against S. niger. A survey was conducted among 600 producers in 12 regions, one hundred (100) sorrel seeds traders and one hundred (100) pesticide sellers in the cities of Ouagadougou, Bobo-Dioulasso, and Pouytenga of Burkina Faso. The results showed that eight percent (8%) of farmers and 56% of traders used chemical insecticides to preserve sorrel seeds. Phostoxin, an organophosphate insecticide, and Protect DP, an insecticide of the pyrethroid family, were respectively used by 87% and 13% of seed traders. Eighty-three percent (83%) of farmers and 76% of traders did not follow the prescribed doses. The incorrect use of insecticides before and after use is a factor in environmental pollution and often results in their ineffectiveness against pests. This information is very useful for developing an integrated protection strategy for sorrel seeds.

With the aim of contributing to the protection of corn against the larvae of Spodoptera frugiperda JE Smith in Burkina Faso, we evaluated the effectiveness of four phytosanitary treatments based on chemical insecticides for the protection of corn plants. The experimental setup is a Fisher block comprising 04 repetitions and 7 treatments. Our study showed a significant effect of the number of insecticide treatments on the infestation rate, larval density but also the severity of damage caused to plants. However, the number of insecticide treatments evaluated in this study did not have a significant effect on yield (Pr( F = 0.531). The average yield of the plants was statistically identical when the plants were protected seven, three and two times with synthetic insecticides based on Emamectin benzoate and Flubendiamide + Thiacloprid. Furthermore, the yield analysis also does not show any difference between untreated plots and plots having received synthetic insecticide applications. It appears from this study that high numbers of insecticide treatments do not necessarily lead to an increase in yield. In areas heavily affected by the pest, three insecticide applications based on approved synthetic insecticides can be used against S. frugiperda damage.

Food security is a major challenge for developing countries. Non-Timber Forest Products (NTFPs) are a source of income for families, improving their living conditions. Tamarind is a NTFP used for many purposes, both for food and industrial purposes. However, it suffers from pest attacks. This study aimed to evaluate the post-harvest practices of tamarind fruits and the constraints related to its storage in the communes of Bobo-Dioulasso and Ouagadougou. A survey conducred in the form of a semi-structured interview toward 113 respondents in Bobo-Dioulasso and 138 in Ouagadougou. The participatory diagnosis showed that the majority of respondents in Bobo-Dioulasso (70.19%) and Ouagadougou (57.33%) considered insects to be the main cause of damage to the pods. We observe a preponderance of perforated beans (63.16%) in Ouagadougou, while in Bobo-Dioulasso the percentage was 29.85. After collecting the pods, 78.95% of the farmers in Ouagadougou dehull the pods immediately and then keep the pulp without further drying, in contrast to Bobo-Dioulasso (16.67%) where only a minority practice this. More than half of the interviewers sell tamarind to meet specific needs. As for control methods, the main ones are steaming of tamarind used by 72.92% of farmers in Ouagadougou, while in Bobo-Dioulasso only 25.64%. These results show that tamarind pods are highly exposed to insect attacks. It is therefore necessary to investigate the improvement of traditional control methods by including other natural alternatives in order to minimize losses and promote tamarind exploitation.

Shea kernels are generally stored by Burkinabè households. A prospective study conducted in Ziro province revealed the damage caused by insects. The objective of this study was to inventory the pests associated with shea kernel stocks. Samples of shea kernels were collected from farmers’ stocks in three localities of the province over a six-month period. At each period, 4 samples were taken from each locality to constitute 12 batches that were brought to the Laboratory of Fundamental and Applied Entomology of the Joseph KI-ZERBO University. Each batch was analyzed and kept for insect emergence monitoring for 45 days. Six (06) species of predators were identified, among which Ephestia cautella (Walker) was the most abundant (87.33% of individuals). Four (04) species of the order Coleoptera, were recorded with proportions of individuals lower than 4%. Bracon hebetor (Say), a parasitic Hymenoptera, was recorded with a proportion of 7.26%. The rate of perforation of kernels, which was significant at the beginning of storage (28.87%), increased progressively to reach a maximum of 57.73% after six months of storage. It is important to study the behavior of H. hebetor toward E. cautella in order to clarify its status and possibly consider the implementation of a biological control against this pest.

The reduction of the losses post-harvest can contribute to the attack of the food self-sufficiency and the backing of the food security in Burkina. It is in this perspective that this survey has been undertaken and consisted to the assessment of the losses post-harvest of the pennisetum and sorghum in the townships of Ziniaré in the region of the Central Tray and Komki-Ipala in the region of the Center. This assessment carried at home on the links harvest, drying, transportation of the fields and beating / vannage. Iit had for objective to determine the level of the losses. The rate of the quantitative losses is determined according to the methodology of the FAO. The analysis of the sorghum losses revealed 6,33 % to the harvest, 8,63 % to beating / vannage, 2,2 % to the drying and 0,3 % to the transportation at home, for the two townships. So the losses accumulated of sorghum have been estimated to 17,46 %. The losses post-harvest of the pennisetum recorded to the harvest is estimated on average to 6,76 % and 12,53 % to the operations of bombardment / vannage. The heap of the losses of the pennisetum bound to the operations of harvest and bombardment / vannage has been valued to 19,3 %. These results show that the losses post-harvest stays important. The losses of financial incomes by agricultural household are estimated in 55 875 FCFA for sorghum and 42 000 FCFA for the pennisetum. By extrapolation, the quantitative losses of the two cereals considered value themselves to 30 784 tons about for the two regions with an economic value closely 4,336 FCFA billions.