Root System Distribution of Highbush Blueberry Crops of Various Ages in Medium-Textured Soils

Paltineanu, Cristian; Coman, Mihaï; Nicolae, Silvia; Ancu, Irina; Călinescu, Mirela; Sturzeanu, Monica; Chițu, E.; CIUCU, MIHAELA; Nicola, Claudia

doi:10.1007/s10341-017-0357-3

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Water deficit stimulates the production of osmotic substances in blueberries and enhances drought tolerance. In contrast, water excess may dilute the osmoprotectant soluble sugars; Paltineanu et al [ 12 ] reported a similar conclusion. In another study, Gu et al [ 34 ] found that moderate drought stimulated chlorophyll biosynthesis in the lowbush blueberry ‘Chibowa’ and the northern highbush blueberry ‘Ruika’; however, its production decreased with increasing drought stress.…”

Section: Discussionmentioning

confidence: 92%

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

Guo

Wang

et al. 2021

PLoS ONE

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Understanding the impact of irrigation and fertilizer on rabbiteye blueberry (Vaccinium virgatum) physiology is necessary for its precision planting. Here, we applied varied irrigation and fertilizer under completely randomized experimental design to see its impact on the physiological characteristics and bush growth of rabbiteye blueberries. A comprehensive evaluation of the membership function was used to establish the best water–fertilizer coupling regimes. Rabbiteye blueberry enhanced the net photosynthetic rate, stomatal conductance and transpiration rate of leaf and improved its photosynthetic capacity at maximum level of irrigation water and fertilizer application (F3W4). The high fertilizer–medium water treatment (F3W3) increased leaf-soluble protein contents. The medium fertilizer–medium water treatment (F2W3, F2W2) increased leaf- soluble sugar, superoxide dismutase, and chlorophyll contents; decreased the malondialdehyde content; and enhanced leaf resistance and metabolism. It also promoted the growth of flower buds and new shoots. Combined membership function and cluster analyses revealed that the optimal water and fertilizer conditions for promoting rabbiteye blueberry plant growth were the medium fertilizer–medium water [(NH4)2SO4:Ca(H2PO4)2:K2SO4 at 59:10:20 g plant-1; 2.5 L water plant-1], medium fertilizer–medium-high water [(NH4)2SO4:Ca(H2PO4)2:K2SO4 at 59:10:20 g plant-1; 3.75 L water plant-1], and high fertilizer–medium-high water [(NH4)2SO4:Ca(H2PO4)2:K2SO4 at 118:20:40 g plant-1; 3.75 L water plant-1] treatments. The findings of this study could be used in improving the precision and efficacy of rabbiteye blueberry planting in Guizhou, China. Such an approach can increase the productivity and profitability for local fruit farmers.

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Section: Discussionmentioning

confidence: 92%

“…Blueberries are shrubs with shallow, inconspicuous main roots, few root hairs, and low drought tolerance [ 12 ]. Therefore, for blueberry cultivation, a reasonable amount of water and fertilizer is vital for the promotion of fruit growth and the production of stable and high yields.…”

Section: Introductionmentioning

confidence: 99%

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

Guo

Wang

et al. 2021

PLoS ONE

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“…In addition, blueberries have shallow root systems, no root hairs, and are not tolerant to drought. Under limited summer precipitation, evaporation can cause varying degrees of soil water deficit [5]. Therefore, the efficient utilization of precipitation is key to improving the yield and water use efficiency (WUE) of blueberries in the region.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Water and Fertilizer Coupling on Plant and Soil Nitrogen Characteristics and Fruit Growth of Rabbiteye Blueberry Plants in a Semi-Arid Region in China

Guo¹,

Zhao²,

Hu³

et al. 2023

Phyton

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To evaluate the effects of nitrogen (N) and irrigation coupling on the soil N distribution, plant N utilization, and fruit yield of rabbiteye blueberries (Vaccinium virgatum), a field experiment was designed using two factors (water and fertilizer application) with four levels of irrigation and three levels of fertilization, and a control. Under the different water and fertilizer combinations, N primarily accumulated in the leaves. Irrigation and N application within appropriate ranges (pure N ≤ 29 g/plant and irrigation volume ≤ 2.5 L/plant) significantly improved the blueberry fruit yield. Increases in water and N within these ranges promoted the effective accumulation of N in various organs and the absorption and utilization of N in the plants, which ultimately promoted blueberry yield. With increased N application rate, the nitrate N content of the 0-20 cm and 20-50 cm soil layers increased. With increased irrigation volume, the nitrate N content of the 0-20 cm soil layer decreased, while the nitrate content in the 20-50 cm soil layer increased. Low N and moderate water treatments resulted in high fruit yields and reduced nitrate N retention in the soil. Under these conditions, the economic input-output ratio was high and the soil N accumulation was low, and thus the economic and ecological benefits were maximized.

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A model for estimating Ag-MAR flooding duration based on crop tolerance, root depth, and soil texture data

Ganot

Dahlke

2021

Agricultural Water Management

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Agricultural Managed Aquifer Recharge (Ag-MAR) is an emerging MAR technique that uses agricultural fields as percolation basins to recharge the underlying aquifers. Ag-MAR can be a beneficial solution for storing excess surface water, however, if not managed properly it can potentially harm the soil and crops planted on the field at the time of recharge, ultimately leading to yield loss. Root zone residence time (RZRT), defined as the duration that the root-zone can remain saturated (or nearly saturated) during Ag-MAR without crop damage, is a key factor in Ag-MAR since extended periods of saturation in the root-zone can damage crops. Here we propose a simple RZRT model for estimating a safe Ag-MAR flooding duration based on hydraulic parameters deduced from soil texture, crop tolerance to saturation, effective root depth, and critical soil water content, which is the point where soil re-aeration occurs during drainage. We tested the model with different hydraulic parameter sets and compared the results to observed data and HYDRUS simulations. Using fitted and unfitted hydraulic parameters the average error of the predicted Ag-MAR flooding duration was less than 5 h, and up to a few days, respectively. Consequently, for crops with low flooding-tolerance, the model should be used with caution, but for more tolerant crops, the model provides reasonable predictions. The model also provides a first approximation of the possible amount of water that can be applied during an Ag-MAR event. Based on the RZRT model, we evaluated the Ag-MAR potential of various crops and effective root depths for each of the USDA soil texture classes. A spreadsheet containing the RZRT model including hydraulic parameters, and crop properties is publicly available and can be used as a learning tool or to estimate Ag-MAR flooding duration for different soils. The proposed model can be easily integrated into Ag-MAR assessment tools.

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Root System Distribution of Highbush Blueberry Crops of Various Ages in Medium-Textured Soils

Cited by 5 publications

References 12 publications

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

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

The Effects of Water and Fertilizer Coupling on Plant and Soil Nitrogen Characteristics and Fruit Growth of Rabbiteye Blueberry Plants in a Semi-Arid Region in China

A model for estimating Ag-MAR flooding duration based on crop tolerance, root depth, and soil texture data

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