Gestion de la fertilité des sols cultivés en igname

RESUMEDans le but de mettre au point de barèmes de fumure minérale adaptés aux régions et aux variétés nouvelles de riz pluvial, une enquête a été réalisée à Saïoua, auprès de 7 associations de riziculteurs dans le Centre Ouest de la Côte d'Ivoire. Cette enquête a porté sur les riziculteurs et leur environnement, les caractéristiques des systèmes de culture à base de riz pluvial, la perception et l'utilisation des engrais chimiques et, enfin, la destination de la production rizicole. Il ressort de l'enquête que la production de riz est à dominance destinée à l'autoconsommation. La riziculture pluviale, activité la plus répandue dans la région, est pratiquée à 95 % par les femmes. Elle demeure encore itinérante, avec apparition, localisée de zones de blocage foncier. Cette situation a entraîné l'éloignement des parcellesrizicoles des villages et une exploitation continue de certaines parcelles pendant 2, voire 3 ans. les pratiques agricolesont entrainé la nécessité de de restaurer les terres cultivées à travers l'utilisation des engrais chimiques selon les paysans. Aussi, le souhait des trois quarts des riziculteurs enquêtés est-il d'utiliser ces engrais chimiques. Mais, compte tenu du coût élevé et de la faiblesse du pouvoir d'achat de la population rurale, les engrais ne sont pas effectivement utilisés. Les quelques riziculteurs enquêtés, qui ont déjà utilisés les engrais chimiques, ont obtenu les produits par le biais d'Organisations Non Gouvernementales (ONG) à la faveur de projets agricoles.Mots clés : riziculture pluviale, enquête, engrais chimiques, Côte d'Ivoire. ABSTRACT PROBLEMATICS OF THE USE OF MINERAL FERTILIZERS IN RICE PRODUCTION AREAS : CASE OF THE MIDDLE WEST OF CÔTE D'IVOIRE

A natural, comfortable and safe campus environment is always expected by every student in academic activities. Preservation of the campus environment must have the cooperation of various components directly related to the campus, namely the academic community. Student existence is a condition called condition sine qua non (must and absolute) in a university. The purpose of this study was to determine the role of students in the cleanliness of the UKRIDA campus environment, especially students of the Management Study Program. The implementation of a healthy campus has always been the dream of the academic community. In this study, the author uses several respondents in their own environment who know and know firsthand the real conditions on the UKRIDA Campus. Respondents represent the academic community. For this reason, the researcher uses a qualitative approach to obtain the data desired by the researcher. The results showed that environmental conservation is very relevant for students in protecting their environment. Students realize that students themselves are the spearhead in preserving the campus environment.Keywords: Cleanliness, Neighborhood, Campus, UKRIDA, Students. AbstrakLingkungan yang alami, nyaman dan aman selalu diharapkan oleh setiap mahasiswa atau mahasiswi dalam aktivitas akademis. Pelestarian lingkungan harus adanya kerjasama dari berbagai komponen yang terkait langsung dengan kampus yaitu sivitas akademika. Eksistensi Mahasiswa adalah sebuah kondisi yang disebut sebagai conditio sine qua non (harus dan mutlak) di dalam sebuah Perguruan Tinggi. Tujuan dari penelitian ini untuk mengetahui peran mahasiswa terhadap kebersihan lingkungan kampus UKRIDA khususnya mahasiswa Program Studi Manajemen. Penerapan kampus yang sehat selalu menjadi dambaan sivitas akademika. Dalam penelitian ini, penulis menggunakan beberapa orang responden di dalam lingkungan sendiri yang mengenal dan mengetahui secara langsung kondisi riil di dalam Kampus UKRIDA. Responden mewakili civitas akadermica. Untuk itu peneliti menggunakan pendekatan kualitatif untuk mendapatkan data yang diinginkan oleh peneliti. Hasil penelitian menunjukan bahwa pelestarian lingkungan adalah sangat relevan bagi mahasiswa dalam menjaga lingkungannya. Mahasiswa menyadari bahwa mahasiswa sendirilah yang menjadi ujung tombak dalam melestarikan lingkungan kampus.Kata Kunci: Mahasiswa, Kebersihan, Lingkungan, Kampus, UKRIDA.

Coral reefs have an important role in the economic aspects of coastal communities in the Ujung Genteng, Sukabumi which depends on shallow waters. Increased human activity around the coast has an impact on coral reef ecosystems which are easily fragile by natural and non-natural factors. To prevent damage of coral reefs that have an impact on people's livelihoods, the community has carried out conservation efforts by involving various parties in Ujung Genteng. This study examines the role of the community in the maintenance and preservation of coral reefs. This study uses a qualitative design with a case study approach. Based on the research results, it is found that the community has a role in the preservation and maintenance of the marine environment, especially the coral reef ecosystem, in collaboration with related agencies and CSR and involving the local community directly as well. Community involvement in the process of maintaining and preserving coral reefs is also intended to increase the welfare of local communities that work as fishermen.

Technological developments that occur at this time are growing rapidly, one of which wecan feel is the media of communication. This development is also supported by theemergence of online-based applications such as social media that help provide usefulinformation for its users. This of course also affects the world of marketing directly. Thisstudy aims to determine the effect of social media on purchasing decisions mediated bybrand image (a case study of undergraduate students at Krida Wacana ChristianUniversity in 2018, 2019, 2020 & 2021). The population in this study were active studentsof UKRIDA Class of 2018, 2019, 2020, and 2020 with a total of 2546 students. The numberof samples taken as many as 94 people using simple random sampling technique. Theresults of this analysis explain that all indicators in this study are valid and reliable. Thisstudy uses a Structural Equation Modeling (SEM) approach based on Partial Least Square(PLS) using SmartPLS 3.3 software. This study found that social media had a significanteffect of 31.5% on brand image, as well as social media on purchasing decisions only45.8% which can be explained in this study, meaning that there are about 68.5% of brandimage variables and 54. ,2% of the purchasing decision variables that can be explainedfrom other variables outside the study