Plant nutrition and fertilizing.

Menzel, C. M.; Waite, G. K.

doi:10.1079/9780851996967.0209

Cited by 11 publications

(16 citation statements)

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“…Except for Ca and P, the concentration of the rest of the elements, including Mg (Fig. 3A-J), were in the optimum range for lychee (Menzel 2005). Leaf N concentration was slightly above optimum.…”

Section: Resultsmentioning

confidence: 94%

Growth and Nutrient Concentration of Lychee Grown on an Acid Ultisol

Goenaga

Marrero

Pérez

2022

hortte

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Little is known about the adaptability of lychee (Litchi chinensis) to acidic soils high in aluminum (Al). A 2-year greenhouse study was conducted to determine the effects of various levels of soil Al on dry matter production, plant growth, and nutrient concentration in shoots of lychee cultivar rootstock seedlings (maternal half-sibs) of cultivars Brewster, Bostworth-3 (Kwai May Pink), and Kaimana. Soil Al treatments were statistically different for all variables measured in the study but not rootstock seedlings. Total leaf, stem, and root dry weights significantly decreased at soil Al concentrations ranging from 0.42 to 12.69 cmol·kg−1. Increments in soil Al resulted in a significant reduction in the concentration of leaf calcium and phosphorus and a significant increase in leaf Al in cultivar rootstock seedlings. The concentration of leaf potassium, magnesium, iron, zinc, and boron were in the optimum range for lychee, whereas leaf nitrogen and manganese concentrations were above optimum. The results of this study demonstrated no cultivar rootstock seedlings differences for dry matter production in lychee trees grown under Al stress and demonstrate that lychee is highly susceptible to acid soils.

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Section: Resultsmentioning

confidence: 94%

Growth and Nutrient Concentration of Lychee Grown on an Acid Ultisol

Goenaga

Marrero

Pérez

2022

hortte

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“…Secondly, longan is not grown extensively in comparison to the other crops, and the resulting lack of data might make it hard to identify patterns. And finally, longan trees are particularly sensitive to drought during the flowering and early fruit development stages (Menzel & Waite, 2005), which coincides with the dry season in Thailand, making this crop completely reliant on irrigation for production (Spreer et al, 2013). Irrigation mitigates the effects of drought, making it more difficult to model direct effects of meteorological droughts on crop production.…”

Section: Temporal and Crop Specific Variation In Indicator-to-impact ...mentioning

confidence: 99%

Indicator-to-impact links to help improve agricultural drought preparedness in Thailand

Tanguy

Eastman

Magee

et al. 2023

Preprint

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Abstract. Droughts in Thailand are becoming more severe due to climate change. Developing a reliable Drought Monitoring and Early Warning System (DMEWS) is essential to strengthen a country’s resilience to droughts. However, for a DMEWS to be valuable, the drought indicators it provides stakeholders must have relevance to tangible impacts on the ground. Here, we analyse drought indicator-to-impact relationships in Thailand, using a combination of correlation analysis and machine learning techniques (random forest). In the correlation analysis, we study the link between meteorological drought indicators and high-resolution remote sensing vegetation indices used as proxies for crop-yield and forest-growth impacts. Our analysis shows that this link varies depending on land use, season, and region. The random forest models built to estimate regional crop productivity allow a more in-depth analysis of the crop-/region-specific importance of different drought indicators. The results highlight seasonal patterns of drought vulnerability for individual crops, usually linked to their growing season, although the effects are somewhat attenuated in irrigated regions. Integration of the approaches provides new detailed knowledge of crop-/region-specific indicator-to-impact links, which can form the basis of targeted mitigation actions in an improved DMEWS in Thailand, and could be applied in other parts of Southeast Asia and beyond.

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“…is a sub-tropical evergreen fruit crop which needed specific climatic requirements for growth. The major litchi growing countries are China, Israel, Australia, Thailand, Taiwan, India, Vietnam, Africa Mexico and South America (Menzel and Waite 2005). World production of litchi is estimated to be around 2.11 million tonnes, with more than 95% of the area and production share of Asia.…”

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confidence: 99%

“…Inflorescence of litchi is a compound dichasia with duodichogamy condition, producing three stages of flowers that bloom simultaneously after each other, with different degree of overlapping among them in different genotypes and climatic conditions (Menzel and Waite 2005). Flowers of the first stage are staminate (M1), followed by a second stage of pistillate flower (F) and third a stage of hermaphrodite flowers (M2).…”

mentioning

confidence: 99%

Pollen production, viability and in vitro pollen germination of different litchi (Litchi chinensis) genotypes

et al. 2018

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Litchi (Litchi chinensis Sonn.) is one of the important commercial fruits of the subtropical region. Its short flowering period couple with narrow genetic base serves as the major constraints in litchi genetic improvement. Pollen are known to directly influence reproductive success and genetic structure of the plant population. In this study, we compare the pollen quantity per anther, viability and in vitro pollen germination of two types of male flower (M1 and M2) of four different litchi genotype, viz. Shahi, China, Bedana and Kasba. Pollen quantity was evaluated by blood count method while pollen viability was assessed using acetocarmine, 2, 3, 5-triphenyl tetrazolium chloride (TTC), 2, 5-diphenyl monotetrazolium bromide (MTT) and aniline blue-lectophenol staining methods. For germination test, different concentrations of sucrose, boric acid (H3BO3) and agar were used. Highest pollen quantity was observed in Shahi (5292) followed by China (5022), Kasba (4775), and Bedana (4186) in the pollen from M2 flower. Acetocarmine solution (1.0 %) was most suitable dye for pollen viability test. Staining results revealed that M2 pollen were more viable than M1. Among the different media concentrations, in vitro pollen germination medium containing 15 % sucrose + 100 ppm boric acid + 1.0% agar showed promising results. Further assessment of the germination potential, pollen from M1 and M2 flower were incubated at different temperature and duration. Highest germination rate was observed at 25oC with incubation period of 12 hr but maximum pollen tube growth occurs at 25oC for 24 hr. Pollen from M2 flower had significantly higher pollen quantity, viability and germination rate compared to pollen from M1flower. Preservation and conservation of M2 pollen with high viability and germination potential for adaptation to different climatic condition of this important litchi tree fruit.

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Plant nutrition and fertilizing.

Cited by 11 publications

References 0 publications

Growth and Nutrient Concentration of Lychee Grown on an Acid Ultisol

Growth and Nutrient Concentration of Lychee Grown on an Acid Ultisol

Indicator-to-impact links to help improve agricultural drought preparedness in Thailand

Pollen production, viability and in vitro pollen germination of different litchi (Litchi chinensis) genotypes

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