Foliar antitranspirant and soil superabsorbent hydrogel affect photosynthetic gas exchange and water use efficiency of maize grown under low rainfall conditions

Yang, Wei; Guo, Shuai; Li, Pinfang; Song, Riquan; Jian, Yu

doi:10.1002/jsfa.9195

Cited by 30 publications

(26 citation statements)

References 46 publications

(105 reference statements)

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“…The Chl (a+b) content under both moisture conditions did not significantly change when FA was applied alone (Figure 3). Few studies show that foliar FA spraying has little effect on Chl (a+b) content (Goreta et al, 2007;Celik et al, 2010;Yang et al, 2019). However, Anjum et al (2011) demonstrated that Chl (a+b) in maize plants significantly improves by FA spraying under WD and WW conditions.…”

Section: Discussionmentioning

confidence: 99%

Co-application of soil superabsorbent polymer and foliar fulvic acid to increase tolerance to water deficit maize: photosynthesis, water parameters, and proline

Yang

Guo

et al. 2019

Chil. j. agric. res.

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Fulvic acid (FA) and superabsorbent polymer (SAP) are widely applied to improve crop growth and yield under water deficit conditions, but little is known about the changes in crop physiological parameters related to water deficit tolerance when SAP and FA are combined. A pot test with maize (Zea mays L.) plants was conducted to examine the combined effect on photosynthesis, leaf water, proline, and growth under soil water deficit. Maize plants were subjected to two soil moisture conditions at the late crop growth phase: water deficit (WD, 50% field capacity) and well-watered (WW, 80% field capacity). The SAP (4.5 g m-2) was mixed into the soil layer at sowing and the FA solution (2 g L-1) was sprayed twice during water control. The combined application significantly improved maize grain yield under both watering conditions. The net photosynthesis rate, intrinsic quantum yield, fluorescent parameter (Fv/Fm), and chlorophyll content all improved with the combined application under both watering regimes. The compensating effect of combining chemicals on yield and photosynthesis parameters was higher than when applied alone under the two watering conditions. For prolonged and WD conditions, leaf proline and water content were higher under the combined treatment than when used separately. Under the WD conditions treated with FA and SAP, Fv/Fm had positive significant correlations with leaf water content and osmotic potential; leaf proline did not show any correlations with either the osmotic potential or leaf water content. This result demonstrated that SAP and FA could be combined to maintain high leaf proline and improve photosynthesis to mitigate adverse effects of moderate water storage on maize growth.

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Section: Discussionmentioning

confidence: 99%

Co-application of soil superabsorbent polymer and foliar fulvic acid to increase tolerance to water deficit maize: photosynthesis, water parameters, and proline

Yang

Guo

et al. 2019

Chil. j. agric. res.

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“…Super absorbent polymers have been widely used in agricultural and forest soil to increase moisture conditions and promote the growth of crops and trees [14,15,[39][40][41]. Our study showed that C. formosanus may be attracted by super absorbent polymers placed around plant roots.…”

Section: Discussionmentioning

confidence: 68%

Super Absorbent Polymers Buried within Dry Soil Attract Formosan Subterranean Termites (Blattodea: Rhinotermitidae)

Xie

Jin

Lin³

et al. 2019

Forests

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Baiting is one of the main methods to control subterranean termites. Many previous studies showed that subterranean termites avoid making tunnels within dry soil and feeding on dry wood, which may decrease bait infestation and consumption in drought areas. Super absorbent polymers are a group of materials that can retain large amounts of water and improve the moisture content of soil and bait matrices, and therefore may attract termites. In the present study, choice tests were conducted in the laboratory to investigate the aggregation and feeding behaviors of Formosan subterranean termites, Coptotermes formosanus Shiraki, in response to the three super absorbent polymers-sodium polyacrylate (Na-PAM), potassium polyacrylate (K-PAM), and poly(acrylamide-co-acrylic acid) potassium salt (P(AM/AA))-that were either placed within soil or filled in the void volume of baiting containers. Under dry-soil (30%-moisture) conditions, termites consumed significantly more wood in the chambers where super absorbent polymers were buried than in the control chambers (super absorbent polymer was not placed within soil). In addition, Na-PAM placed within dry soil significantly increased termite aggregation compared with the control chambers. However, no aggregation or feeding preference was detected when super absorbent polymers were placed within wet soil (60%-moisture). Also, filling super absorbent polymers into the void volume of baiting containers did not attract termites, whether the soil was dry or wet. Our study showed that placing super absorbent polymers within soil around bait stations may increase bait consumption by subterranean termites in drought locations.

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“…Under the normal conditions of agroecosystems, water shortage would limit crop growth, while excessive use of water would increase production costs and even pollute the environment due to enhanced fertilizer leaching. [1][2][3] Hereby, the improvement of agricultural water use efficiency is becoming a key approach to reduce irrigation water consumption, mitigate water shortage and reduce environmental problems. In order to achieve these goals in the eld of agriculture, hydrogels are deemed to be a potential candidate because of their water-adsorbing capacity and slowrelease function by virtue of their elastic networks.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] In contrast, most of them are subject to serious limitations such as a relatively low photothermal conversion efficiency, limited absorption range, which remains a practice challenge for agriculture applications. Alternatively, detonation nanodiamond (DND) formed by an sp 3 -carbon diamond core and a reconstructed sp 2 -carbon surface layer have recently received great attention on account of their inherent features, including high biocompatibility, large surface area, high thermal conductivity, spherical morphology, and surface functionality. [24][25][26] In additionally, DND is an excellent photothermal material with an absorption range spanning across the UV, visible and even near-infrared regions.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release

Zheng

Bai

et al. 2019

RSC Adv.

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Foliar antitranspirant and soil superabsorbent hydrogel affect photosynthetic gas exchange and water use efficiency of maize grown under low rainfall conditions

Abstract: Soil SAP and foliar FA use under low rainfall conditions had little influence on crop water consumption but improved plant WUE by enhancing photosynthesis and increasing kernel number. © 2018 Society of Chemical Industry.

Cited by 30 publications

References 46 publications

Co-application of soil superabsorbent polymer and foliar fulvic acid to increase tolerance to water deficit maize: photosynthesis, water parameters, and proline

Co-application of soil superabsorbent polymer and foliar fulvic acid to increase tolerance to water deficit maize: photosynthesis, water parameters, and proline

Super Absorbent Polymers Buried within Dry Soil Attract Formosan Subterranean Termites (Blattodea: Rhinotermitidae)

Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release

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