Performance of Onion Seed Production Under Organic and Mineral Fertilizers in the Soudano-Sahelian Zone of Cameroon

Abstract

The study on the improvement of the quantitative and qualitative production of onion seeds was carried out at the IRAD experimental site in Meskine. This trial was conducted using a completely randomized experimental block design with seven treatments (fertilizers) for six replicates. Thus, at 45 JARS, the application at a rate of 250 kg/ha and 15 t/ha broadcast respectively for mineral fertilizer (27-13-13; 14-23-14; 12-14-19; 22-10-15 and 46-0-0) and for goat manure (organic fertilizer). In addition, a biostimulant was applied at a dose of 1 l/ha using the sprayer (ULVA). The data collected was analyzed with IBM SPSS Statistics version 20 software at the 5% significance level. The analysis of the results obtained shows that formulations 27-13-13 (T1) and 12-14-19 (T3) shortened the number of days of appearance of the first bolting and flowering by two (2) days. The high yield and maximum weight of 1000 grains were obtained with the T0 treatment, which is goat manure. The treatment (T2) based on the 14-23-14 formulation of fertilizer made it possible to obtain a maximum rate of germination and its germination power. The correlation test between the parameters of early childhood of plants at different phonological stages has identified that the 22-10-15 (T+) formulation ensures the rapid development of different parts of the plants. The result of the correlation test between the studied development and yield parameters made it possible to identify the 14-23-14 (T2) formulation as the best fertilizer for onion seed production.