Cocoa productivity in Côte d'Ivoire has been on a downward trend for the last decades due to many factors key among them being the non-availability of quality planting materials. However, some elite clones developed in the country are available and need to be adopted by farmers. This study was conducted in Soubré, Côte d'Ivoire to evaluate the grafting techniques (top grafting and budding) success of 10 elite cocoa clones and their effects on selected growth parameters in the nursery and field. Experimental design was a split plot with grafting technique as main factor and clones as subplot treatment replicated three times. Data were collected on shoot emergence 1 to 5 weeks after grafting (WAG) and grafting success at 10 WAG. Our results showed shoot emergence from top grafting but not on budding 1 WAG. In addition, the number of leaves was high in top grafting (11) compared to budding (5); the same trend was observed in the field. There were no significant differences between both techniques for the grafting success; meanwhile success was 77% and 68% for top grafting and budding, respectively. However, there was better vegetative growth on seedlings grafted using top grafting than budding and this technique seems to be the best to graft cocoa in the nursery.
Recent studies in the Nawa region of Côte d'Ivoire have indicated an acute malnutrition rate of 11.3% among cocoa producers. One of recommended actions from the studies was to diversify agriculture with nutrients rich crops. Introduction of soybean (Glycine max) cropping system could go a long way to ensure food and nutritional security in the region. The current study was conducted in two sites (Logboayo and Soubré) in the south-west of Côte d'Ivoire, to evaluate the effect of IRAT-FA3 Bradyrhizobium japonicum strain inoculum on the agronomic performance of five varieties of soybean named Doko, Canarana, V3_2013, V6_2013 and IT_235. The experimental design was randomized complete block with a split plot with inoculation as the main factor and variety of soybean as subplot treatment replicated three times. Data were collected on some yield parameters and the grain yield. Results of yield showed a highly significant effect (P<0.0001) of the site and a significant effect (P=0.0316) of the variety x treatment interaction. Highest yield was recorded at Logboayo with 1838 kg ha -1 compared to 1220 kg ha -1 for Soubré. The variety V6_2013 with a yield of 1931 kg ha -1 and good vegetative development could be recommended as elite variety for the farmers in the Nawa region.
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