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Rice in the Maga agroecosystem (Far North Cameroon) - Bok av Ismael Sadou - Häftad

This study on the effect of insect pests on rice production was conducted in the Far North of Cameroon in the Maga irrigated rice ecosystem. The aim was to determine the biological diversity of insect pests of rice in the Maga rice ecosystem, to assess the damage and dynamics of insect pests on the phenological stages of rice, and to evaluate the effect of the insecticide lynx on insect pests and rice production. The results obtained on biological diversity showed that 2,465 insect pests of rice..

AFRICAN RICE MIDGE IN MAROUA (EXTREME NORTH CAMEROON) - Bok av Ismael Sadou - Häftad

The objective of the study was to increase rice production by screening three (03) NERICA (New Rice for Africa) rice varieties against African rice midge (Orseolia oryzivora) attack and to integrate efficient biological control in rainfed rice cultivation.During the rice cropping cycle, each phenological stage of the plant is sampled every two weeks using the D-VAC aspirator and mowing net throughout the cropping season, as this sampling frequency corresponds to a specific phenological stage. White..

LEPIDOPTERAN INSECTS ON NERICA RICE 3 - Bok av Ismael Sadou - Häftad

The present study on the effect of insect pests on rice production was conducted in Maroua, Far North Cameroon in the rainfed rice ecosystem to determine the biological diversity of insect pests of rice to improve rice production. Insects were captured using sweep nets throughout the entire plot at different phenological stages of the rice crop, from the 15th day after sowing to heading.The results obtained on biological diversity showed that Maliarpha separatella species (22 species) have a high..

Insect pests on rice yield in the Far North of Cameroon - Bok av Ismael Sadou - Häftad

Insect pests of rice are a very serious threat to rice production (irrigated and rainfed) in the Far North region of Cameroon, causing yield losses, but have not received the attention they deserve as a major constraint to rice production in Africa. The present study was conducted with a view to improving rice production through proper management of rice insect pests, using appropriate control methods in the Far North of Cameroon in the irrigated rice ecosystem of Maga and the rainfed rice ecosystem..

IMPACTS OF CLIMATE CHANGE ON RICE PRODUCTION - Bok av Adelph Randriamahefa - Häftad

IMPACTS OF CLIMATE CHANGE ON RICE PRODUCTION - Bok av Adelph Randriamahefa - Häftad

BIOLOGICAL FERTILIZATION OF IRRIGATED RICE IN THE FAR NORTH OF CAMEROON - Bok av Ismael Sadou - Häftad

In order to increase rice production while preserving the environment, we tested the influence of some inocula on the growth of two irrigated rice varieties in the presence and absence of chemical fertilizer. The study showed that arbuscular mycorrhizal fungi accelerate the germination rate and increase the emergence rate of rice seeds. In addition, inoculation with mycorrhizal biofertilizers significantly increased the size of rice plants. The best performing inocula for germination rate are Tropic..

Performance of the local rice marketing chain in Benin - Bok av Moïse K Bienvenu Sodjinou - Häftad

This book entitled \Performance of the local rice marketing chain in Benin\ (Performance of the local rice marketing chain in Benin) is a scientific work that provides detailed knowledge of the performance of the marketing chain for locally produced rice in Benin. It analyses value added according to the different types of local rice marketing chains. The results showed that the lack of warehouses, the lack of means of transport, the high transport costs and above all the difficult access to the..

Use of Rice Processing Residues - Bok av Lucas Franco Corrêa Schalcher - Häftad

Rice is a cereal that almost the entire Brazilian population eats. It has a large agricultural production, mainly due to its ease of adaptation to the climate and different types of soil in Brazil. As well as the grain, the cereal is also made up of its husk, which can be put to different uses, as indicated by some of the research studies into viable alternatives for reusing rice processing waste. This research report presents the results of a literature review on the use of rice processing residues..

Rice production in the peri-urban area of Mahajanga - Bok av Heriniaina Ramahefarison - Häftad

Rice cultivation in the lowlands of the peri-urban area of Mahajanga is a small family operation, producing about 0.8 t/ha. Currently, the Tahia variety is one of the most widely grown varieties in the two sites, and it meets the criteria of producers' choice and consumers' expectations. Rice yield improvement was done by determining the influences of transplanting age, transplanting density, number of strands per clump and fertilizer application. The results obtained show that plants transplanted..

PREDATORS AND PARASITOIDS OF INSECT PESTS OF UPLAND RICE - Bok av Ismael Sadou - Häftad

The objective of this study was to make an inventory of predatory and parasitoid arthropods of rainfed rice insect pests in Maroua. Insects were captured using sweep nets in a random fashion over an area of 2500 m2. 100 double sweeps (200 sweeps) were made per net and repeated five times, for a total of 1000 sweeps per collection. Collections were made every two weeks at each stage of rice development (seedling, tillering and heading). Nine species of predators and four species of parasitoids were..

Study of the economic profitability of rice farmers in the ON - Bok av Issa Kanadjigui - Häftad

The Office du Niger zone remains the main pole of rice production, which is essentially carried out by family farms. The Niono production zone is the oldest production zone after Macina, covering a total area of 14,898 ha divided between four (4) developed ponds (see presentation of the zone). The first phase of our study was to make a comparative analysis of the profitability of rice farmers who own equipment and those who use the service, and finally to explain the process of issuing technical..

Efficiency of rice seedbeds in the Koussin-lélé perimeter in Benin - Bok av Idelphonse O. Saliou - Häftad

Seed is one of the key inputs for good rice production. Its multiplication requires more care and technical skill than simple paddy production. The aim of this study was to assess the efficiency of rice seedbeds in the Koussin-lélé irrigated perimeter in the commune of Covè, Benin. All 141 farmers of the perimeter were surveyed on their production of the first cycle of the 2014-2015 agricultural season. The operating account and production frontier methods were applied. It emerged that 1 FCFA..

Agro-morphological characterization of rice varieties - Bok av Makan Diarrisso - Häftad

Rice is most often grown under continuous flooding and uses large quantities of irrigation water. The effects of climate change will exacerbate the incidence of droughts and floods, and sustainable food security will depend on increased agricultural production and reduced consumption of irrigation water. In areas where water availability could pose problems, the use of irrigation systems adapted to water constraints is driving the development of new technologies. On the one hand, this will enable..

Analysis of rice yield variability in Niger - Bok av Idrissa Gaya Yacouba - Häftad

The main objective is to determine the factors that lead to differences in yields between rice varieties according to the cultivation practices of producers. The study took place in Niger on the hydro-agricultural developments of the river valley. To achieve this objective, the study was based on a survey phase based on a questionnaire integrated into a smartphone, and another observation phase, based on the installation of plots and sub-plots in the farmers' fields in order to collect information..

Creole rice seeds grown in an agrosystem - Maranhão - Bok av Franciele Chaves Sousa - Häftad

This book presents the physiological qualities of the varieties of Creole rice seeds from the municipalities of Cachoeira Grande and Morro - MA through germination and vigour tests carried out at the Seed Analysis Laboratory belonging to the Agricultural Sciences Centre of the Phytotechny and Plant Health Department at the State University of Maranhão with the aim of finding the most productive Creole variety. This book provides the reader with more detailed information about the research and the..

Gluten-free cookies with green legume and rice flour - Bok av Clicia Maria de Jesus Benevides - Häftad

The objectives of this study were the chemical and sensory characterization of gluten-free cookies made from mixed green legume flour, Vigna unguiculata (caupi), Lablab purpureus (mangalô) and Cajanus cajan (andu), and rice (Oryza sativa). A completely randomized design with three replications was used, comprising three treatments (BFC - caupi; BFA - andu and BFM - mangalô). The centesimal composition of the products was determined and sensory acceptance was evaluated with 60 consumers. The BFM..

Effects of soil fertilization on grub behaviour - Bok av Valéry Riantsoa - Häftad

Rainfed rice cultivation in the Vakinankaratra highlands faces major problems due to soil poverty and the presence of pest white grubs. A greenhouse study evaluated the effect of soil fertilization on two species of grubs: Heteroconus paradoxus and Hyposerica sp.The experiment used four types of treatment (soil without fertilizer, cattle manure, NPK fertilizer and a combination of NPK and manure) on a variety of upland rice. White grub damage was assessed at different stages of rice growth. Without..

Two activities with opposing challenges in the commune of Diembéring - Bok av Idrissa Lamine Diémé - Häftad

This study analyses the priority of tourism in the local economy and the reasons for the decline of rice cultivation in this area. It also analyses the impact of the loss of rice-growing and natural areas. This work shows that tourism plays an important role in the socio-economic life of the commune of Diembéring. This tourism, which was installed in last position, has ended up becoming the driving force of the local economy. This situation has, in fact, allowed for the proliferation of human settlements..

Alternative materials in the composition of concrete - Bok av Cristiane Carine Santos - Häftad

The aim of this study was to analyze and compare the potential of using rice husk ash (RHA) and rice husk silica (RHS) in separate mixtures, as a partial cement replacement material and also as a cement reduction material in different concrete mixes. To this end, a reference mix was produced and the partial cement replacements and reductions were carried out at different levels. The analyses made it possible to identify which of the two pozzolans studied performed best in terms of axial compressive..

Hygienised urine in irrigated rice production in Katiola (Côte d'Ivoire) - Bok av Koné Kinanpara - Häftad

Urine hygienised by storage is effective in eliminating microbial germs, particularly schistosomes, and inactivating their eggs. It is a credible alternative for combating bilharziasis. The EcoSan approach offers the prospect of eradicating both forms of bilharziasis (urogenital and intestinal) by covering all localities with a complete ecological sanitation system and selling hygienised excreta as fertiliser to farmers. Urine used as an agricultural fertiliser also improves yields, with the added..

Water Stress in Rice Crops, its Impact on Productivity - Bok av María Dolores Montes Recalde - Häftad

Analysis of the mechanical properties of concrete - Bok av Cristiane Carine Santos - Häftad

With the increasing consumption of natural resources worldwide, there are major environmental concerns. This research aims to analyze concrete mixtures with residual construction and demolition aggregate (RCD) through axial compressive strength tests. The concretes studied were molded with the replacement of two levels of residual aggregate, cement was also partially replaced by two types of pozzolan in binary and ternary mixtures, in which 25% of cement was replaced by rice husk ash (CCA) and 25%..

Self-sufficiency of Staple Grains in Mexico - Bok av Agustin de Luis Peralta - Häftad

In order to achieve food sovereignty, it is essential to have the capacity to satisfy the nation's consumption through food availability. In the case of basic grains, its capacity must be determined through food self-sufficiency.The most important basic grains for Mexico are rice, beans, white corn and wheat, which represent part of the daily diet of society.Self-sufficiency can be understood as the capacity to satisfy demand through a country's production.In order to determine whether basic grains..

The secondary granaries of the savannahs - Bok av Léger Daodjoah Jalombi - Häftad

When it comes to assessing Africa's economic potential, the focus is on its subsoil, its people and, to a lesser extent, its agriculture, which is struggling to produce the cereals needed to feed its people. Witness the quantities of rice from Asia that invade African markets every day. Africa's potential for fruit production is not often mentioned, because it is assumed to be derisory and ignored. Apples and other fruits marketed worldwide are hardly produced in Africa. Ignorance of the potential..

Production and characterisation of gluten-free bread - Bok av Hanndson Araujo Silva - Häftad

The aim of this research was to produce a gluten-free loaf formulated with red rice flour, microbial transglutaminase enzyme and chitosan in proportions of 0%, 1% and 2%, in which the sample containing 0% chitosan was used as a control sample for later comparison with the others. The physical and chemical characteristics of the breads were analysed and the following parameters were determined: texture and humidity by infrared during 5 days of storage, pH, acidity, colour, humidity, specific volume..