Interactive effects of autumn tillage with mulching on soil temperature, productivity and water use efficiency of rainfed potato in loess plateau of China

As a potential energy crop with high biomass yield, Miscanthus lutarioriparius (M. lutarioriparius), endemic to the Long River Range in central China, needs to be investigated for its acclimation to stressful climatic and soil conditions often found on the marginal land. In this study, traits related to acclimation and yield, including survival rates, plant height (PH), stem diameter (SD), tiller number (TN), water use efficiency (WUE), and photosynthetic rates (A), were examined for 41 M. lutarioriparius populations that transplanted to the arid and cold Loess Plateau of China. The results showed that the average survival rate of M. lutarioriparius populations was only 4.16% over the first winter but the overwinter rate increased to 35.03% after the second winter, suggesting that plants having survived the first winter could have acclaimed to the low temperature. The strikingly high survival rates over the second winter were found to be 95.83% and 80.85%, respectively, for HG18 and HG39 populations. These populations might be especially valuable for the selection of energy crops for such an area. Those individuals surviving for the two consecutive winters showed significantly higher WUE than those measured after the first winter. The high WUE and low stomatal conductance (gs) observed in survived individuals could have been responsible for their acclimation to this new and harsh environment. A total of 61 individuals with productive growth traits and strong resistance to cold and drought were identified for further energy crop development. This study showed that the variation of M. lutarioriparius held great potential for developing energy crops following continuous field selection.

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Light and Water Use Efficiency as Influenced by Clouds and/or Aerosols in a Rainfed Spring Maize Cropland on the Loess Plateau

Crop Science ◽

10.2135/cropsci2017.06.0341 ◽

2018 ◽

Vol 58 (2) ◽

pp. 853-862 ◽

Cited By ~ 5

Author(s):

Xiang Gao ◽

Fengxue Gu ◽

Xurong Mei ◽

Weiping Hao ◽

Haoru Li ◽

...

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Loess Plateau ◽

The Loess Plateau ◽

Spring Maize ◽

Use Efficiency

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Improving grain yield and water use efficiency of winter wheat through a combination of manure and chemical nitrogen fertilizer on the Loess plateau, China

Journal of soil science and plant nutrition ◽

10.4067/s0718-95162017005000033 ◽

2017 ◽

pp. 0-0 ◽

Cited By ~ 2

Author(s):

Haoqing Zhang ◽

Xinyang Yu ◽

Zhongyu Jin ◽

Wei Zheng ◽

Bingnian Zhai ◽

...

Keyword(s):

Winter Wheat ◽

Grain Yield ◽

Water Use Efficiency ◽

Water Use ◽

Loess Plateau ◽

Nitrogen Fertilizer ◽

The Loess Plateau ◽

Use Efficiency

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Biodegradable mulch controls weeds and increases water use efficiency in lettuce crops

Horticultura Brasileira ◽

10.1590/s0102-0536-20210314 ◽

2021 ◽

Vol 39 (3) ◽

pp. 330-334

Author(s):

Agnaldo Roberto de J Freitas ◽

Francisco Claudio L de Freitas ◽

Caetano Marciano de Souza ◽

Fabio T Delazari ◽

Paulo Geraldo Berger ◽

...

Keyword(s):

Soil Temperature ◽

Water Use Efficiency ◽

Water Use ◽

Soil Cover ◽

Polyethylene Film ◽

Water Volume ◽

Recycled Paper ◽

Biodegradable Mulch ◽

Use Efficiency ◽

Weed Removal

ABSTRACT Vegetable cultivation requires high water use and weed control. Soil cover using recycled paper, can be an alternative to polyethylene film to reduce weed incidence, soil temperature and increase water use efficiency beyond reduces costs and environmental pollutions. The objective of this study was to evaluate the use of biodegradable mulch in weed management and water use efficiency (WUE) in lettuce crop. The treatments were composed of brown recycled paper (RP), black polyethylene film (PF) and soil without cover with weed removal (WR) and without weed removal (WW). RP and PF were efficient to control weeds. The soil temperature with RP was 8.2 and 2.1ºC lower than with PF and WR, respectively. The lettuce yield with RP was 14.5 and 28.3% higher than WR, and with PF, respectively. The water volume applied with RP was 26.5% lower, and WUE was 55.6% higher compared to WR. Soil cover with recycled paper controlled weeds, reduced soil temperature and water consumption and increased yield and water use efficiency in lettuce crop.

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Biochar addition alleviate the negative effects of drought and salinity stress on soybean productivity and water use efficiency

10.21203/rs.3.rs-33869/v1 ◽

2020 ◽

Author(s):

Yaojun Zhang ◽

Jiaqi Ding ◽

Hong Wang ◽

Lei Su ◽

Cancan Zhao

Keyword(s):

Grain Yield ◽

Water Use Efficiency ◽

Water Use ◽

Salinity Stress ◽

Crop Growth ◽

Interactive Effects ◽

Gaseous Exchange ◽

Negative Effects ◽

Use Efficiency ◽

Effects Of Drought

Abstract Background: Environmental stress is a crucial factor restricting plant growth as well as crop productivity, thus influencing the agricultural sustainability. Biochar addition is proposed as an effective management to improve crop performance. However, there were few studies focused on the effect of biochar addition on crop growth and productivity under interactive effect of abiotic stress (e.g., drought and salinity). This study was conducted with a pot experiment to investigate the interaction effects of drought and salinity stress on soybean yield, leaf gaseous exchange and water use efficiency (WUE) under biochar addition. Results: Drought and salinity stress significantly depressed soybean phenology (e.g. flowering time) and all the leaf gas exchange parameters, but had inconsistent effects on soybean root growth and WUE at leaf and yield levels. Salinity stress significantly decreased photosynthetic rate, stomatal conductance, intercellular CO2 concentration and transpiration rate by 20.7%, 26.3%, 10.5% and 27.2%, respectively. Lower biomass production and grain yield were probably due to the restrained photosynthesis under drought and salinity stress. Biochar addition significantly enhanced soybean grain yield by 3.1-14.8%. Drought stress and biochar addition significantly increased WUE-yield by 27.5% and 15.6%, respectively, while salinity stress significantly decreased WUE-yield by 24.2%. Drought and salinity stress showed some negative interactions on soybean productivity and leaf gaseous exchange. But biochar addition alleviate the negative effects on soybean productivity and water use efficiency under drought and salinity stress. Conclusions: The results of the present study indicated that drought and salinity stress could significantly depress soybean growth and productivity. There exist interactive effects of drought and salinity stress on soybean productivity and water use efficiency, while we could employ biochar to alleviate the negative effects. We should consider the interactive effects of different abiotic restriction factors on crop growth thus for sustainable agriculture in the future.

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