PJB-2022-470
EFFECT OF PLANTING DENSITY ON YIELD AND YIELD COMPONENTS OF DIFFERENT RAPESEED LINES
Nihar Ahmad
Abstract
EFFECT OF PLANTING DENSITY ON YIELD AND YIELD COMPONENTS OF DIFFERENT RAPESEED LINES Nihar Ahmad and Muhammad Arif Department of Agronomy, Faculty of Crop Production Sciences The University of Agriculture, Peshawar-Pakistan November 2022 ABSTRACT Pakistan is an agricultural country, but still it is the third largest importer of edible oil on the globe. The increase in population growth rate, the consumption and demand for edible oil is increasing day by day. A field experiment was conducted to evaluate the effect of planting density on yield and yield components of different rapeseed lines during rabi season 2021-2022 at Agronomy Research Farm, the University of Agriculture Peshawar, Pakistan. The experiment was comprised of two factors i.e. planting density (7 and 14 plants m-2) and eight rapeseed lines ( KS-M-74, KS-M-75, Song-1, WY-48, WY-02, WY-01, C-05 and Local check Rokhana). The experiment was laid out in RCB design with three replications. The results indicated that rapeseed local check Rokhana took maximum days to emergence and maturity (184 days), produced taller plants (217 cm), the highest thousand seed weight(4.21g), oil contents (48.1%), and oil yield (691.5 kg ha-1). Likewise, the rapeseed line C-05 took maximum days to flowering and 70% flowering (103 and 121 days), produced the highest number of siliques plant-1 (469), siliques m-2 (5356), seeds silique-1 (25) biological yield (6140 kg ha-1) and seed yield (1453 kg ha-1). In similar way, KS-M-74 produced the highest glucosinolate content (110.7%) and WY-02 produced maximum erucic acid content (59.5%). In case of planting density, 7 plants m-2 increased plant height by (2.28%), seeds silique-1 by (11%) thousand seed weight by (3.2%), seed yield by (5.8%), harvest index by (13.6%), oil content by (4.6%), oil yield by (10%) as compared to 14 plants m-2. However, planting density 14 plants m-2 produced maximum silique m-2, biological yield and glucosinolate content (22%), (7%) and (5%), respectively over crop grown in lower planting density of 7 plants m-2. Planting density had no significant effects on days to physiological maturity and erucic acid. It was concluded that the rapeseed lines C-05, WY-01 and local check Rokhana produced highest seed yield.
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