Reaction of oriental tobacco to spacing and topping treatments at three levels of nitrogenous fertilizer application

Narrow row spacing increased yield and decreased nicotine content in sun-cured tobacco (Nicotiana tabacum L.)

“…Results of the present study are in accordance with previous studies on burley and other oriental type cultivars (Lamprecht and Van der Merwe, 1984;Schlotzhauer et al, 1989Sficas, 1970. Also, it has to be noted that especially in the case of narrow spacing, the yield of the studied cultivars was significantly higher not only from the corresponding values for wider spacing but also higher than other previously studied Oriental type tobacco cultivars (Delibacak et al, 2014).…”

“…Plant spacing in tobacco production usually refers to distances between tobacco plants within and between rows in the field, but it can also be interpreted as total number of plants and leaves produced within a defined area (Bukan et al, 2010;Campbell et al, 1982). In most cases, narrower spacing of plants generally results in a reduction of size, body, thickness, and weight per unit area of the leaf (Lamprecht and Van der Merwe, 1984;Sfikas, 1970). At higher planting densities an increase of yield of some tobacco cultivars has been reported by several authors.…”

“…At higher planting densities an increase of yield of some tobacco cultivars has been reported by several authors. However, quality of such leaves was within a wide range and consequently increasing plant population remains a challenge (Chaplin et al, 1968;Collins et al, 1969;Lamprecht and Van der Merwe, 1984).…”