Growth and physiological responses of sunflower grown under levels of water replacement and potassium fertilization

Furtado, Guilherme de Freitas; Xavier, Diego Azevedo; Andrade, Elysson Marcks GonÃ§alves; Lima, Geovani Soares de; Chaves, L. H. G.; Vasconcelos, Alessandra Carvalho de; Wanderley, JosÃ© Alberto Calado

doi:10.5897/ajar2016.10852

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…(7) Potassium application contributes plants to approach longer root length as well through the condition of drought stress. The positive response of sunflower productivity to potassium application was described by several investigators (Ahmad et al, 2011;Chajjro et al, 2013;Ahmad et al, 2014;Hakan and Zengin, 2014;Jan and Hadi, 2015;Guilherme et al, 2016 andSabrina et al, 2016).…”

Section: Potassiummentioning

confidence: 69%

Effect of Antioxidants and Potassium on Productivity of Sunflower in Sandy Soil

Salem

Shoman

2018

Egyptian Journal of Desert Research

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uring two summer seasons of 2015 and 2016, the influence of antioxidants application and potassium levels on productivity of sunflower was estimated under sandy soil conditions. Antioxidants (nil antioxidants; tap water only; vitamin E, 50 ppm; vitamin C, 100 ppm; citric acid, 500 ppm and vitamin E + vitamin C + citric acid at the same levels used individually for each). Potassium levels included 0, 24, 36 and 48 kg K 2 O/feddan (0.42 hectar). Results showed that both antioxidants application and potassium levels treatments had remarkable effects on plant height, head diameter, number of seeds/head, 1000 seed weight, seed and oil yields as well as percentages of harvest index, shelling, seed protein and seed oil in both seasons. Maximum values of such tested traits were commonly recorded with using vitamin E + vitamin C + citric acid. Increasing potassium level from 0 to 48 kg K 2 O/feddan caused significant increases in all traits of sunflower plants and the highest values were obtained at 48 kg K 2 O/feddan in both seasons. All studied traits were significantly affected by the interaction between antioxidants application and potassium levels, except harvest index and seed protein percentage.

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Section: Potassiummentioning

confidence: 69%

Effect of Antioxidants and Potassium on Productivity of Sunflower in Sandy Soil

Salem

Shoman

2018

Egyptian Journal of Desert Research

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“…[30] used sunflower hybrids (SF-187 and Parsun-1) against various K levels and found varied response of sunflower hybrids to increased K levels, However, a combination of 150:100:100 kg ha -1 NPK resulted in optimistic results regarding agronomic performance and plant nutrient uptakes. [32] evaluated the impact of potassium use efficiency of sunflower hybrids and found that Helio 251 had higher potassium use efficiency as compared to rest of the hybrids.…”

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confidence: 99%

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

Jamro

Talpur

Sootahar

et al. 2018

JHPR

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A field experiment was conducted during summer 2016 to screen out sunflower (Helianthus annuusL.) 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.

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The Changes in Yield Response Factor, Water Use Efficiency, and Physiology of Sunflower Owing to Ascorbic and Citric Acids Application Under Mild Deficit Irrigation

et al. 2022

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Under arid and semi-arid climates, adopting the appropriate tools for alleviating water deficit impacts is a critical factor that affects the physiological characteristics and yield of sunflower. Therefore, in order to find promising field practices in sunflower cultivation, the strip plots design in randomized complete block arrangement was used to examine the effects of two irrigation regimes as 100% (FI) and 85% (DI) of crop evapotranspiration and five antioxidant treatments on physiological and agronomic traits, yield response factor, and irrigation water use efficiency (IWUE) of sunflower. The antioxidant treatments involved two rates of ascorbic acid (150 and 300 mg L−1) and two rates of citric acid (250 and 500 mg L−1), in addition to the check treatment (tap water). The study was conducted for two growing seasons of 2019 and 2020 at the Experimental Farm of Ain Shams University, Egypt, located in a semi-arid environment. Findings showed that exogenous application of higher rate of ascorbic acid, i.e. 300 mg L−1 with FI exhibited the highest increase of chlorophyll a, chlorophyll b and the lowest proline content compared to other interaction treatments. Seed yield was significantly higher with FI plus ascorbic acid 300 mg L−1 and DI plus ascorbic acid 300 mg L−1 treatments than with their counterpart check treatment in both growing seasons. Under DI, IWUE was improved with antioxidant-treated plants compared to untreated plants. Yield response factor as an indicator of crop tolerance to drought was higher than the unit (> 1) under all ascorbic acid and citric acid levels. It could be concluded that ascorbic acid and citric acids partially mitigated the reductions in growth and yield caused by low water supply. However, yield response factor demonstrated that the crop is still sensitive to drought. Thus, other applicable patterns should be adopted to increase the yield potential of sunflower for counteracting the adverse impacts of drought.

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Growth and physiological responses of sunflower grown under levels of water replacement and potassium fertilization

Cited by 5 publications

References 22 publications

Effect of Antioxidants and Potassium on Productivity of Sunflower in Sandy Soil

Effect of Antioxidants and Potassium on Productivity of Sunflower in Sandy Soil

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

The Changes in Yield Response Factor, Water Use Efficiency, and Physiology of Sunflower Owing to Ascorbic and Citric Acids Application Under Mild Deficit Irrigation

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