Effects of water and fertilizer coupling on the physiological characteristics and growth of rabbiteye blueberry

Guo, Xiaolan; Li, Shuangshuang; Wang, Delu; Huang, Zongsheng; Sarwar, Naeem; Mubeen, Khuram; Shakeel, Muhammad; Hussain, Mubshar

doi:10.1371/journal.pone.0254013

Cited by 28 publications

(23 citation statements)

References 24 publications

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“…Results showed that this species does not respond strongly to changes in fertilization levels in relation to Gs, with values between 200 and 300 mmol m −2 s −1 between treatments and evaluation seasons (p > 0.05). These results are in contrast to those found in a study carried out on blueberries, where Gs was affected by the fertilization doses together with the water regime, where a correlation was found between the fertilization dose and moisture content in the soil [44]. As the soil moisture was constant for all treatments in this study, it could be strongly influential so that no significant differences in Gs are observed between treatments [44].…”

Section: Discussioncontrasting

confidence: 99%

“…On the other hand, the application of compost to the soil increased levels of organic matter (OM) in all treatments (Tables 1 and 2), which could be affecting the moisture retention capacity, aeration, porosity, and soil carbon content as reported in multiple studies [45][46][47]. Said OM modifications in the soil could be having an impact not only on the physical parameters of the soil, but also to the nutritional status and biomass of the plant and consequently on the foliar area of the plant [44,45]. In the present study, the LAI was higher in both seasons in Q3 (Figure 2), showing an increase in the second season of more than 20% compared to CK and T1 (p < 0.05) and close to 10% higher than T3 (p < 0.05).…”

Section: Discussionmentioning

confidence: 76%

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The Use of Compost Increases Bioactive Compounds and Fruit Yield in Calafate Grown in the Central South of Chile

et al. 2022

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Different concentrations of compost applied as organic fertilizer can modify productive, quality, and chemical parameters in several fruit tree species. The objective of this study was to determine the effect of increasing applications of compost on physiological, productive, and quality parameters in calafate fruit during the seasons of 2018–2019 and 2019–2020. The study was conducted on a commercial calafate orchard using a randomized complete block design with four treatments (CK: no compost application, T1: 5 Ton ha−1, T2: 10 Ton ha−1, and T3: 15 Ton ha−1), each with four repetitions. The results did not show statistical significance for stomatal conductance (Gs), quantum yield of PSII, or photosynthetic active radiation (PAR) within treatments. As for fruit yield, a statistical difference was found between the control treatment and T1, which were lower than T2 and T3 in both seasons. The trees reached a higher leaf area index with T2 in both seasons. The highest antioxidant capacity was obtained with T3 and T2 for the first and second season, respectively. Polyphenols and total anthocyanin production showed statistical significance, with a higher content at the second season with T2. It is concluded that the dose under which yield, quality, and nutraceutical content of calafate fruit are optimized is the one used in T2, 10 Ton ha−1.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 76%

The Use of Compost Increases Bioactive Compounds and Fruit Yield in Calafate Grown in the Central South of Chile

et al. 2022

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“…[ 36 ]. Evidence that appropriate water and fertilizer coupling regimes may improve the photosynthetic efficiency of plants and promote growth have been shown [ 37 ]. Therefore, choosing the appropriate nitrogen concentration may result in the enhanced drought resistance of plants [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Physiological responses of Amaranthus cruentus L. to drought stress under sufficient- and deficient-nitrogen conditions

et al. 2022

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Water and nitrogen availability are two major environmental factors that can impair plant growth, and when combined, their effects on plant performance can be either intensified or reduced. The objective of this study was to analyze the influence of nitrogen availability on the responses of Amaranthus cruentus’s metabolism to water stress. The plants were cultivated in plastic pots filled with vermiculite, kept under greenhouse conditions, and were watered three times a week with 70% of a full strength nitrogen-free Long Ashton solution, containing 1.97 or 9.88 kg N ha−1 as ammonium nitrate. Photosynthetic parameters were evaluated in planta, and leaves were harvested for chemical analysis of photosynthetic pigments, proline, and phenolic contents. Higher nitrogen supply increased the shoot dry matter, photosynthetic pigments, photosynthesis, stomatal conductance, transpiration, total leaf nitrogen, proline, nitrate, and ammonium but reduced the concentration of flavonoids and total phenols. Six days of water stress did not affect dry matter, photosynthetic pigments, leaf nitrogen, ammonium, or specialized metabolites but increased the proline under high nitrogen and negatively affected stomatal conductance, transpiration, photosynthesis, relative water content, instantaneous water use efficiency, and leaf nitrate. The negative effect was more pronounced under high nitrogen supply. The results show that the addition of a high amount of nitrogen made the physiological processes of plants more sensitive to water stress, indicating that the plant response to water restriction depends on the interaction between the different environmental stressors to which the plants are subjected.

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“…The previous experimental results showed that both soil nutrients and moisture amounts influenced the increase in chlorophyll content of plants under water-deficient conditions (Wang et al 2021). Contrarily, the low amount of water had resulted in higher growth performance, several new shoots, chlorophyll content, and leaf soluble sugar compared with high amounts of water treatments (Guo et al 2021). Further, Basal and Szabo (2020) reported that irrigation regimes significantly altered the morpho-physiological traits.…”

Section: Introductionmentioning

confidence: 94%

Growth and morpho-physiology of Tectona philippinensis under different water stress and soil conditions

Hernandez

TOLENTINO²,

QUIÑONES³

et al. 2022

Biodiversitas

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Abstract. Hernandez JO, Tolentino CA, Quiñones LAE, Villancio GB, Maldia LSJ, Combalicer MS. 2021. Growth and morpho-physiology of Tectona philippinensis under different water stress and soil conditions. Biodiversitas 23: 507-513. Plants exhibit adaptive mechanisms to respond to fluctuating amounts of soil moisture and poor soil properties; however, these mechanisms remain largely unknown in many forest tree species growing in dry and limestone areas in the Philippines, such as the endemic and endangered Tectona philippinensis Benth & Hook.f. This study investigated the growth and morpho-physiological responses of T. philippinensis wildlings to water stress and soil types. One-year-old wildlings were subjected to two watering treatments, i.e., well-watered and water-stressed, and three different soil types, i.e., Lobo, Batangas, Mt. Makiling Forest Reserve, and UP-Laguna-Quezon Land Grant. The root collar diameter, height, biomass allocations, and morpho-physiological traits (photosynthesis, stomatal conductance, transpiration, relative water content, specific leaf area, and stem green density) were measured. Overall, the growth performance of the wildlings was improved significantly when grown in soil from the natural habitat under WW conditions. Therefore, the recommended conservation approach potentially suitable for T. philippinensis is in-situ, particularly in riparian areas, when artificial irrigation is not possible and practical. The present study's findings provide us with a better understanding of the growth and ecophysiology of T. philippinensis under water-deficient conditions for its effective in-situ conservation.

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Effects of water and fertilizer coupling on the physiological characteristics and growth of rabbiteye blueberry

Cited by 28 publications

References 24 publications

The Use of Compost Increases Bioactive Compounds and Fruit Yield in Calafate Grown in the Central South of Chile

The Use of Compost Increases Bioactive Compounds and Fruit Yield in Calafate Grown in the Central South of Chile

Physiological responses of Amaranthus cruentus L. to drought stress under sufficient- and deficient-nitrogen conditions

Growth and morpho-physiology of Tectona philippinensis under different water stress and soil conditions

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