Dose Optimization of Potassium (K) for Yield and Quality Increment of Strawberry (Fragaria ×ananassa Duch) Chandler

Ahmad, Husain; Sajid, Muhammad; Ullah, Rizwan; Hayat, Sikandar; Shahab, Muhammad

doi:10.9734/ajea/2014/10989

Cited by 13 publications

(8 citation statements)

References 19 publications

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“…Moreover, the content of chlorophyll in leaves, translocation of metabolites in plants from source to sink resulted in improved and better fruit growth in the form of fruit size, fruit number, fruit weight, and ultimately fruit yield ( Reetika et al, 2018 ). Many scientists have also investigated the effect of K on date fruit, concluding that K plays a critical role in enhancing date palm fruit weight and productivity ( Osman, 2010 , Ahmad et al, 2014 , Shekofteh and Nick-Pour, 2016 ). The improved, reducing sugars in the fruit can be the effect of K combined with urea as both of these encouraged hydrolysis of starch to convert into sugars ( Jat and Kacha, 2014 ).…”

Section: Discussionmentioning

confidence: 99%

Investigating the role of potassium and urea to control fruit drop and to improve fruit quality of “Dhakki” date palm

Khan

Alizai

Ahmed

et al. 2022

Saudi Journal of Biological Sciences

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Section: Discussionmentioning

confidence: 99%

Investigating the role of potassium and urea to control fruit drop and to improve fruit quality of “Dhakki” date palm

Khan

Alizai

Ahmed

et al. 2022

Saudi Journal of Biological Sciences

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“…Others researches also reported that optimal potassium supply maximizes yield of tomato [47] and strawberry [48]. The study results of Zelelew et al [49] showed that potassium had significant effect on potato growth.…”

Section: Strawberry Production Parametersmentioning

confidence: 95%

Effect of Potassium Source and Dose on Yield and Quality of Strawberry Fruit

Nakro¹,

Bamouh²,

Khatib³

et al. 2022

AJPS

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The purpose of this research is to investigate the effect of potassium fertilization source and dose on productivity and quality parameters of strawberry. The trial was conducted in 2016-2017 at the experimental greenhouse of Hassan II Institute of Agronomy and Veterinary Sciences in Rabat. Strawberry plants of the cultivar "San Andreas" were planted on November 6 th in 12 liter pots equipped with a gravity fertigation system. The experimental design was a split-plot with eight treatment combinations of two potassium fertilizer sources: 1) Potassium Sulphate for the whole growing cycle (PS/PS); 2) Potassium Nitrate during the vegetative period and Potassium Sulfate during the fruit production period (PN/PS) and four potassium fertilizer doses: 100, 200, 300 and 400 kg/ha of K 2 O replicated thrice. Potassium sulfate source was superior to potassium nitrate on the improvement of productivity and quality parameters of strawberry fruit. Potassium sulphate improved the number of flowers by 16%, fruit production by 21%, sugar content by 3%, and titrable acidity content by 0.5 g/L. The highest yield was recorded in plants receiving 300 kg/ha K 2 O as potassium sulphate. The 300 kg K 2 O/ha dose gave also superior results regarding quality parameters of strawberry fruit. This optimum potassium dose enhanced number of flowers by 35%, fruits produced by 44%, sugar content by 25% and titrable acidity content by 0.9 g/L.

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“…Under potassium starvation or salt stress, K + is released from the vacuole providing K + homeostasis in the cytoplasm, as well as for the cellular maintenance of turgor, enzyme activation and membrane potential (Fontes et al, 2011; Nieves-Cordones et al, 2014). Adequate K nutrition greatly influences the synthesis of sucrose and starch in plants such as apple (Mosa et al, 2015), muskmelon (Lester et al, 2010), tomato (Almeselmani et al, 2010) and strawberry (Ahmad et al, 2014). However, K levels have different effects on organic acid metabolism depending on the plant species (Etienne et al, 2014; Flores et al, 2015; Niu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Potassium fertilization arrests malate accumulation and alters soluble sugar metabolism in apple fruit

et al. 2018

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Effects of different potassium (K) levels, which were K0 (no fertilizer), K1 (71.5 g KCl plant−1 year−1), K2 (286.7 g KCl plant−1 year−1), and K3 (434 g KCl plant−1 year−1), were evaluated based on sugar and organic acid metabolism levels from 70–126 days after bloom (DAB) in the developing fruit of potted five-year-old apple (Malus domestica, Borkh.) trees. The results indicate that K fertilization promoted greater fruit mass, higher Ca2+ and soluble solid levels, and lower titratable acid levels, as well as increased pH values at harvest. With the application of different levels of K fertilizer, fructose, sorbitol, glucose and sucrose accumulation rates significantly changed during fruit development. Fruit in the K2 group had higher fructose, sucrose and glucose levels than those in other treatment groups at 126 DAB. These changes in soluble sugar are related to the activity of metabolic enzymes. Sucrose synthase (SS) and sorbitol dehydrogenase (SDH) activity in the K2 treated fruit was significantly higher than those in other treatment groups from 70–126 DAB. Malate levels in K-supplemented fruit were notably lower than those in non K-supplemented fruit, and K3 treated fruit had the lowest malate levels during fruit development. Cytosolic malic enzyme (ME) and phosphoenolpyruvate carboxykinase (PEPCK) activity significantly increased in fruit under the K2 treatment during 112–126 DAB and 98–126 DAB, respectively. In addition, Ca2+ concentration increased with increasing K fertilization levels, which promoted a maximum of 11.72 mg g−1 dry weight in apple fruit. These results show that K levels can alter soluble sugar and malate levels due to the interaction between sugars and acid-metabolic enzymes in fruit.

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Dose Optimization of Potassium (K) for Yield and Quality Increment of Strawberry (Fragaria ×ananassa Duch) Chandler

Cited by 13 publications

References 19 publications

Investigating the role of potassium and urea to control fruit drop and to improve fruit quality of “Dhakki” date palm

Investigating the role of potassium and urea to control fruit drop and to improve fruit quality of “Dhakki” date palm

Effect of Potassium Source and Dose on Yield and Quality of Strawberry Fruit

Potassium fertilization arrests malate accumulation and alters soluble sugar metabolism in apple fruit

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