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Cultivation Systems Using Vegetation Cover Improves Sustainable Production and Nutritional Quality of New Rice for Africa in the Tropics

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Rice science 2018年第5期25卷 286-292页

作者： Pierre Popice Kenmogne NUEMSI Libert Brice TONFACK Judith Mbogne TABOULA Bilal Ahmad MIR Moise Roger Baleba MBANGA Godswill Ntsomboh NTSEFONG carine nono temegne Emmanuel YOUMBI Plant Physiology and Improvement Unit Laboratory of Biotechnology and Environment Department of Plant Biology Faculty of Science University of Yaounde I P.O. Box 812 Yaounde Cameroon Department of Botany University of Kashmir Hazratbal Srinagar 190006 India Pesticide Residue Monitoring Unit Food Quality Control Laboratory Food and Nutrition Research Center Institute of Medical Research and Medicinal Plants Studies Ministry of Scientific Research and Innovation P.O. Box 13033 Yaounde Cameroon Institute of Agricultural Research for Development-Specialized Centre for Oil Palm Research Dibamba P.O. Box 243 Douala Cameroon

Little is known about the impact of direct sowing under vegetation cover on the production and quality of New Rice for Africa （NERICA） on poor oxisol. In this study, two NERICA varieties （NERICA 3 and NERICA 8） were grown under tropical oxisol soil with very low nutrient contents. Four cultivation systems were used in completely randomized block design, including plowing （control）, unplowed soil with dead vegetation cover （DVC）, unplowed soil with live vegetation cover （LVC） and unplowed soil with mixed vegetation cover （MVC）. DVC significantly improved the exponential growth of NERICAs. NERICA 3 was the more productive （2.16–3.05 t/hm2） compared with NERICA 8 （0.71–1.21 t/hm2）. Cultivation systems improved the nutritional quality of NERICAs. The total protein content of NERICA 3 under DVC and MVC was 84.8% and 75.0% higher than control, respectively. The total soluble carbohydrate contents of NERICA 8 under LVC and MVC was 73.2% and 57.3% higher than control, respectively. These results suggested that conservative approach like direct sowing on unplowed soil with vegetation cover systems can improve the nutritional quality of rainfed NERICAs and their sustainable production under poor oxisol soil in sub-Saharan Africa.

关键词： direct sowing sustainable production nutritional quality rice vegetation cover yield protein soluble carbohydrate content The world’s population will hit 9 billion by 2050 (Dubois 400 000 t in 2016 to 800 000 t by 2030 (Thirze 2016). To

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Sporting Usefulness Potential of Nine Local Taxa of Grasses for Lawns in the Agro-Ecological Zone with Bimodal Rainfall in Cameroon

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American Journal of Plant Sciences 2023年第8期14卷 845-856页

作者： Meboma Zanga Yanique Lionel Godswill Ntsomboh Ntsefong temegne nono carine Tonfack Libert Brice Youmbi Emmanuel Department of Plant Biology Faculty of Science University of Yaounde 1 Yaounde Cameroon Cameroon Academy of Young Scientists (CAYS) Yaounde Cameroon

The Cameroonian flora has a very high biodiversity that remains largely unexplored. It contains many grasses that can be used for sports lawns, but are currently underutilized. In order to contribute to the improvement of the quality of sports lawns, nine local grass taxa from the agro-ecological zone with bimodal rainfall in Cameroon were evaluated for their potential for sporting use in natural lawns. The method of the Study and Control Group for Varieties and Seeds was used to evaluate the sports lawn characteristics of the taxa. The resistance to trampling and pulling, the density of the lawn, and the aesthetic appearance, which are factors in calculating the sports index, were monitored at two sites, including the experimental space at the University of Yaounde 1 in the Center region and Kagnol 2 in the East region, from January 2017 to January 2020. The monthly lawn characteristic data allowed for the differentiation between the means and the determination of the sports index of the taxa compared to commercialized lawn varieties. The sports index of the evaluated taxa varied: Cynodon dactylon (6.989), Eleusine indica (6.338), Sporobolus natalensis (6.301), Cynodon cf Cynodon dactylon (6.257), Eragrostis tremula (5.939), Sporobolus pyramidalis (5.583), Agrostis rupestris (5.335), Axonopus compressus (4.991), and Digitaria sp. (4.544). These results show that these grass taxa have potential for sporting use in lawn mixtures at different levels of sports disciplines.

关键词： Sports Lawn Characteristics Sports Index Natural Sports Lawn Local Grass Taxa Resistance to Trampling and Pulling

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