Etude des effets des adventices et de la période critique de concurrence vis-à-vis du cotonnier dans le Sénégal oriental

Chrysanthemum Chrysanthemum (Chrysanthemum morifolium Ramat.) belongs to the family ‘Asteraceae’, origin is China and it’s also known as ‘Queen of the East’. In the study was conducted at Vanavarayar Institute of Agriculture, Manakkadavu, Pollachi. The experiment was laid out in randomized block design and nine treatments with replicated three times. In the result of the present study, organic, bio-fertilizer and organic manure with bio-fertilizer combination of T2, T6 &T7 treatments revealed that significantly increased the plant height, plant spread, number of branches, flower bud initiation, time taken for first flowering and days taken to 50 per cent flowering, flowering duration, weight of twenty fresh flowers and no. of flowers per plant and T1 is least performing treatment. Among the 9 treatments results showed that, T7 - VAM – 50g/plant +Vermicompost- 250g/plant was found to be the comparatively best treatment combination for good growth and flowering attributes in chrysanthemum cv. Poornima white.