Effects of Potassium Deficiency on the Growth of Tea (Camelia sinensis) and Strategies for Optimizing Potassium Levels in Soil: A Critical Review

Huang, Wei; Lin, Minyao; Liao, Jinmei; Li, Ansheng; Tsewang, Wugyan; Chen, Xuan; Sun, Binmei; Liu, Shaoqun; Zheng, Ping

doi:10.3390/horticulturae8070660

Cited by 16 publications

(9 citation statements)

References 41 publications

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“…In this study, there was no significant difference in the effects of the two fertilization measures on the soil available K content, and the soil available K content under the combined application of phosphorus and potassium was higher than that under the P-free treatment or the complete fertilizer treatment. The reason is that the potassium content absorbed during crop growth is higher than that applied by fertilizer 57 or there is a change in adsorption sites in soil and the ability to fix potassium 58 .…”

Section: Discussionmentioning

confidence: 99%

Effects of different fertilization practices on maize yield, soil nutrients, soil moisture, and water use efficiency in northern China based on a meta-analysis

Jiang,

Dong,

Bian

et al. 2024

Sci Rep

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The application of fertilizer to ensure the steady improvement of crop yield has become the main means of agricultural production. However, it remains to be determined whether fertilization practices with different combinations of nitrogen (N), phosphorus (P), potassium (K), and organic (O) fertilizers play a positive role in the sustainability of maize yield and the soil in which it is grown. Therefore,this meta-analysis extracted 2663 data points from 76 studies to systematically analyze and explore the effects of different fertilization measures on maize yield, soil nutrients, water content and water use efficiency (WUE) in northern China. Articles addressing this topic showed that fertilization effectively increased the soil nutrient content and maize yield. The soil organic matter (SOM) increased by 2.36 (N)–55.38% (NPO), total nitrogen content increased by 6.10 (N)–56.39% (NPO), available phosphorus content increased by 17.12 (N)–474.74% (NPO), and available potassium content changed by − 2.90 (NP)–64.40% (NPO). Soil moisture increased by 3.59% under a single organic fertilizer application and decreased by 4.27–13.40% under the other treatments. Compared with no fertilization, the yield increase of fertilized maize reached 11.65–220.42%. NP, NPK and NPKO contributed the most to increased yield in lithological, black and fluvo-aquic soils, respectively. The effects of different fertilization practices on maize yield varied in response to the same meteorological factors. The WUE increased from 9.51 to 160.72%. In conclusion, rational fertilization can improve the soil nutrient content and increase maize yield. The combined application of chemical and organic fertilizer showed the greatest increase in yield and WUE. Organic fertilizer application alone increased soil moisture. Our results provide a theoretical basis for fertilizer application and for improving the soil structure for maize cultivation in northern China.

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Section: Discussionmentioning

confidence: 99%

Effects of different fertilization practices on maize yield, soil nutrients, soil moisture, and water use efficiency in northern China based on a meta-analysis

Jiang,

Dong,

Bian

et al. 2024

Sci Rep

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“…Soil is the carrier of plant cultivation, and differences in soil texture in different zones affect plant growth [19,20]. At the same time, plants themselves change rhizosphere soil properties through root secretions to suit their growth [21,22].…”

Section: Analysis Of Physicochemical Index In Tea Rhizosphere Soilmentioning

confidence: 99%

The Effects of Rock Zones and Tea Tree Varieties on the Growth and Quality of Wuyi Rock Tea Based on the OPLS-DA Model and Machine Learning

Ye,

Zhang,

Jia

et al. 2024

Agriculture

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Rock zones have an important influence on the yield and quality of Wuyi rock tea. In this study, OPLS-DA combined with machine learning was used to analyze the effects of different rock zones and tea tree varieties on the physicochemical properties of rhizosphere soil, the growth of the tea tree and the quality of the tea leaves using tea trees in different rock zones. The results showed that rock zones had significant effects on rhizosphere soil physicochemical indexes, soil enzyme activities, tea tree growth and tea quality indexes, while there was little difference between different tea tree varieties. The interaction analysis showed that the physicochemical indexes of rhizosphere soil in different rock zones significantly affected tea quality, while also affecting growth indexes. The main indexes affecting tea yield and caffeine content were soil pH, available nitrogen, total phosphorus, total nitrogen and available phosphorus, while the main indexes affecting tea quality were available potassium, organic matter, total potassium, protease, polyphenol oxidase and urease. Analyses of PCA, OPLS-DA models and KNN and ANN machine learning showed that different rock zones could be effectively distinguished from each other with 100% accuracy, while different tea varieties had little difference and could not be distinguished. TOPSIS analysis found that the physicochemical indexes most affected by rock zone were available nitrogen, available potassium and sucrose, and the quality indexes most affected by rock zone were tea polyphenols and theanine. The growth index most affected by rock zone was tea yield. It was evident that the key difference between tea trees in different rock zones was yield and quality, with high yields in continent zones, and good quality in semi-rock zones and rock zones. This study provides a crucial foundation for tea-plantation management, the artificial regulation of tea yield and the quality of different rock zones of Wuyi rock tea.

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“…Potassium directly promotes chlorophyll synthesis by activating essential enzymes and stabilizes membranes in chloroplasts, as well as indirectly through efficient CO 2 uptake for photosynthesis via regulated stomatal function (Tranker et al, 2018). Sufficient K levels support effective chlorophyll synthesis and increase green pigment production through several mechanisms (Huang et al, 2022). In calcareous soils having poor soil K uptake by plants throughout the growth period, foliar K treatments appears to mediate physiological responses in plants by activating multiple enzyme or metabolic pathways.…”

Section: Relationship Of Leaf K Concentration and Seed Yield Relation...mentioning

confidence: 99%

Physiological and Agronomic Implications of Foliar Potassium Application on Sunflower Productivity in Calcareous Soils

Memon,

Rajpar,

Jamro

et al. 2024

SJA

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S unflower is a non-traditional and profit-oriented oil seed crop with the potential to bridge the gap between edible oil imports and domestic production in Pakistan (Hameed and Azeem, 2017;Rana et al., 2022). However, the average sunflower yields in the country during 2021 was 1377 kg ha -1 (GOP, 2021) are far below potential yield 3073-3083 kg ha -1 which has been recorded by research centres and Abstract | Soils of Sindh are highly calcareous, consequently limiting potassium (K) supply to crops including sunflower due to low K activity ratio. The research was conducted to ascertain whether K foliar applications can improve growth, and yield of sunflower in calcareous soil. The sunflower cultivar (HO-1) was tested in field with three foliar K sources (Kfs) (MoP, SoP and NoP) and three foliar K times (Kft) treatments (2% once at leaf development stage (LDS), 2% in two equal splits (1% at LDS and 1% inflorescence emergence stage (IES), and 2% in three equal splits (0.67% at LDS, 0.67% IES and 0.67% flower bud development stage (FS). Three repeats of treatments arranged in randomized complete block design. The Kfs affected growth related parameters, chlorophyll concentration, leaf K concentration, seed yields significantly. Application of NoP and SoP raised the seed yield by 9.09% and 8.66% , respectively, over control. Oil content increased by 15% with NoP and 13% with SoP, over control, respectively. The significant Kft variations were also observed for most of the variables studied for field-grown sunflower plants. Among interaction of Kfs x Kft, seed and oil yields were obtained to be highest in T3 when NoP>SoP>MoP were sprayed with 0.67% spray each at LDS, IES and FS stage. It can be concluded that under the calcareous conditions of Sindh, foliar application of 2% K (2 or 3 equal splits at LDS, IES and FS) through NoP, SoP, and MoP sources increase the growth, seed and oil content of sunflower.

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Effects of Potassium Deficiency on the Growth of Tea (Camelia sinensis) and Strategies for Optimizing Potassium Levels in Soil: A Critical Review

Cited by 16 publications

References 41 publications

Effects of different fertilization practices on maize yield, soil nutrients, soil moisture, and water use efficiency in northern China based on a meta-analysis

Effects of different fertilization practices on maize yield, soil nutrients, soil moisture, and water use efficiency in northern China based on a meta-analysis

The Effects of Rock Zones and Tea Tree Varieties on the Growth and Quality of Wuyi Rock Tea Based on the OPLS-DA Model and Machine Learning

Physiological and Agronomic Implications of Foliar Potassium Application on Sunflower Productivity in Calcareous Soils

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