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Screening of Sunflower Genotypes for Potassium Use Efficiency in Irrigated Soil Condition

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A field experiment was conducted during summer 2016 to screen out sunflower (Helianthus annuus L.) genotypes for their potassium (K) use efficiency ratio. Eight sunflower genotypes were tested; Samsung 20, Mehran 2, Ho-1, Melabour, Samsung 30, Valugur, Chinika and Sputnik in randomised complete block design (RCBD) with the two treatments comprised of potassium at (50 and 0 kg K ha-1) along with source (SOP) recommended dose fertilizer respectively. The results revealed that the treated and control plots (50 and 0 kg K ha-1) produced different values for of seeds (1763.1 and 1588.5 head-1), shoot dry weight (23.0 and 19.11 g), head diameter (17.45 and 15.72 cm), seed yields (2065.8 and 1918.7 kg ha-1), seed K % (0.60 and 0.30%) and diagnostic tissue % (3.54 and 2.65%) respectively. The considerable increase was found in seeds head-1 (10.99%), shoot dry weight (20.35%), head diameter (11.01%), seed yields (11.31%) seed K % (100%), and leaf K % (33.58%). Among genotypes, Ho-1 was highly efficient to utilize added K fertilizer more seed (2039.7 head-1), shoot dry weight (25.86 g), plant height (188.66 cm), head diameter (20.20 cm), seed yields (2409.5 kg hat-1). Moreover seed K % and leaf K % was also high in variety Ho_1 (0.65% and (5.05%) respectively. Among all the sunflower tested genotypes Ho-1 showed significant response applied K but the variety Ho-1 and genotype Chinika were more efficient in utilization of K.


Journal of Horticulture and Plant Research (Volume 3)
S. B. Jamro et al., "Screening of Sunflower Genotypes for Potassium Use Efficiency in Irrigated Soil Condition", Journal of Horticulture and Plant Research, Vol. 3, pp. 30-39, 2018
Online since:
August 2018

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