Long-term liming improves soil fertility and soybean root growth, reflecting improvements in leaf gas exchange and grain yield

2021 ◽  
Vol 128 ◽  
pp. 126308
Author(s):  
João William Bossolani ◽  
Carlos Alexandre Costa Crusciol ◽  
José Roberto Portugal ◽  
Luiz Gustavo Moretti ◽  
Ariani Garcia ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Root Growth ◽  
Soil Fertility ◽  
Grain Yield ◽  
Leaf Gas Exchange ◽  
Soybean Root

Responses by wheat to lupin, soil amelioration and fertilizer treatments in a solodised solonetz soil

1988 ◽  
Vol 28 (5) ◽  
pp. 607 ◽  
Author(s):  
WK Gardner ◽  
GK McDonald
Keyword(s):  
Root Growth ◽  
Soil Fertility ◽  
Grain Yield ◽  
Nitrogen Nutrition ◽  
Wheat Yield ◽  
Soil Amelioration ◽  
Nitrogen And Phosphorus ◽  
Deep Placement ◽  
Moisture Extraction ◽  
Solonetz Soil

Disruption of the junction of the A-B horizons of a yellow duplex soil did not affect moisture extraction or grain yield of wheat grown in the Southern Wimmera, and it is unlikely that this zone represents a serious impediment to root growth. However, improving soil fertility, either by growing lupins or by placing nitrogen and phosphorus in the A2 horizon, did increase yields. Following lupins in 1983, wheat yield increased from 4.3 to 55 t/ha in 1984,andfrom 3.1 to3.7 t/ha in 1985. This response was greater than that due to deep placement of nitrogen and phosphorus (0.3 t/ha in 1984,0.4 t/ha in 1985), probably because of improved root growth as a result of less root disease. There were consistent responses to foliar applications of copper and interactions with other treatments; the greatest responses occurred in situations of improved nitrogen nutrition.

Effect of long-term drought stress on leaf gas exchange and fluorescence parameters in C3 and C4 plants

2007 ◽  
Vol 29 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Tomasz Hura ◽  
Katarzyna Hura ◽  
Maciej Grzesiak ◽  
Andrzej Rzepka
Keyword(s):  
Drought Stress ◽  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
C4 Plants ◽  
C3 And C4 Plants ◽  
Fluorescence Parameters

scholarly journals Photosynthetic acclimation and sensitivity to short- and long-term environmental changes

2021 ◽  
Author(s):  
Leonie Schönbeck ◽  
Charlotte Grossiord ◽  
Arthur Gessler ◽  
Jonas Gisler ◽  
Katrin Meusburger ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Gas Exchange ◽  
Environmental Changes ◽  
Leaf Gas Exchange ◽  
Soil Drought ◽  
List Type ◽  
Evaporative Demand ◽  
Leaf Level ◽  
Short And Long Term

SummaryThe future climate will be characterized by an increase in frequency and duration of drought and warming that exacerbates atmospheric evaporative demand. How trees acclimate to long-term soil moisture changes and whether these long-term changes alter trees’ sensitivity to short-term (day to months) variations of vapor pressure deficit (VPD) and soil moisture is largely unknown.Leaf gas exchange measurements were performed within a long-term (17 years) irrigation experiment in a Scots pine-dominated forest in one of Switzerland’s driest areas on trees in naturally dry (control), irrigated, and‘irrigation-stop’ (after 11 years of irrigation) conditions.Seventeen years of irrigation increased photosynthesis (A) and stomatal conductance (gs) and reduced the gs sensitivity to increasing VPD but not to soil drying. Following irrigation-stop, gas exchange did not decrease immediately, but after three years, had decreased significantly in irrigation-stop trees. Vcmax and Jmax recovered after five years.These results suggest that long-term release of soil drought reduces the sensitivity to atmospheric evaporative demand and that atmospheric constraints may play an increasingly important role in combination with soil drought. In addition, they suggest that structural adjustments lead to an attenuation of initially strong leaf-level acclimation to strong multiple-year drought.

Leaf gas exchange and isoprene emission in poplar in response to long-term experimental night-time warming and summer drought in a forest-steppe ecosystem

2018 ◽  
Vol 152 ◽  
pp. 60-67 ◽  
Author(s):  
Isabel Nogues ◽  
Mauro Medori ◽  
Alessio Fortunati ◽  
Eszter Lellei-Kovács ◽  
György Kröel-Dulay ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Forest Steppe ◽  
Summer Drought ◽  
Night Time ◽  
Isoprene Emission ◽  
Steppe Ecosystem

Tropical rainforests under severe drought stress: distinct water use strategies among and within species

2021 ◽  
Author(s):  
Angelika Kübert ◽  
Kathrin Kühnhammer ◽  
Ines Bamberger ◽  
Erik Daber ◽  
Jason De Leeuw ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Soil Water ◽  
Water Use ◽  
Leaf Gas Exchange ◽  
Physiological Responses ◽  
Leaf Water ◽  
Severe Drought ◽  
Subsequent Recovery ◽  
Species Specific

<p>Increasing drought in the tropics is a major threat to rainforests and can strongly harm plant communities. Understanding species-specific water use strategies to drought and the subsequent recovery is therefore important for estimating the risk to tropical rainforest ecosystems of drought. Conducting a large-scale long-term drought experiment in a model rainforest ecosystem (Biosphere 2 WALD project), we evaluated the role of plant physiological responses, above and below ground, in response to drought and subsequent recovery in five species (3 canopy species, 2 understory species). The model rainforest was exposed to a 9.5-week lasting drought. Severe drought was ended with a deep water pulse strongly enriched in <sup>2</sup>H, which allowed us to distinguish between deep and shallow rooting plants, and subsequent rain (natural abundance range of <sup>2</sup>H). We assessed plant physiological responses by leaf water potential, sap flow and high resolution monitoring of leaf gas exchange (concentrations and stable isotopes of H<sub>2</sub>O and CO<sub>2</sub>). Thereby, we could derive plant water uptake and leaf water use efficiency (WUE<sub>leaf</sub>) in high temporal resolution, revealing short-term and long-term responses of plant individuals to drought and rewetting. The observed water use strategies of species and plants differed widely. No uniform response in assimilation (A) and transpiration (T) to drought was found for species, resulting in decreasing, relatively constant, or increasing WUE<sub>leaf</sub> across plant individuals. While WUE<sub>leaf</sub> of some plant individuals strongly decreased due to a breakdown in A, others maintained relatively high T and A and thus constant WUE<sub>leaf, </sub>or increased WUE<sub>leaf</sub> by decreasing T while keeping A relatively high. We expect that the observed plant-specific responses in A, T and WUE<sub>leaf</sub> were strongly related to the plant individuals' access to soil water. We assume that plant individuals with constant WUE<sub>leaf</sub> could maintain their leaf gas exchange due to access to water of deeper soil layers, while plants with increasing/decreasing WUE<sub>leaf</sub> mainly depended on shallow soil water and only had limited or no access to deep soil water. We conclude that the observed physiological responses to drought were not only determined by species-specific water use strategies but also by the diverse strategies within species, mainly depending on the plant individuals' size and place of location. Our results highlight the plasticity of water use strategies beyond species-specific strategies and emphasize its importance for species’ survival in face of climate change and increasing drought.</p>

scholarly journals Leaf gas exchange and grain yield of common bean exposed to spermidine under water stress

2018 ◽  
Vol 56 (4) ◽  
pp. 1387-1397 ◽  
Author(s):  
S. Torabian ◽  
M. R. Shakiba ◽  
A. Dabbagh Mohammadi Nasab ◽  
M. Toorchi
Keyword(s):  
Water Stress ◽  
Gas Exchange ◽  
Grain Yield ◽  
Common Bean ◽  
Leaf Gas Exchange

scholarly journals Soybean root growth and crop yield in reponse to liming at the beginning of a no-tillage system

2014 ◽  
Vol 38 (1) ◽  
pp. 262-271 ◽  
Author(s):  
Edson Campanhola Bortoluzzi ◽  
Guilherme Luis Parize ◽  
Jackson Korchagin ◽  
Vanderlei Rodrigues da Silva ◽  
Danilo dos Santos Rheinheimer ◽  
...  
Keyword(s):  
Root Growth ◽  
Physical Properties ◽  
Grain Yield ◽  
Soil Physical Properties ◽  
Growth And Yield ◽  
No Tillage ◽  
Long Term Effects ◽  
Soybean Root ◽  
Surface Application ◽  
Tillage System

Analyzing the soil near crop roots may reveal limitations to growth and yield even in a no-tillage system. The purpose of the present study was to relate the chemical and physical properties of soil under a no-tillage system to soybean root growth and plant yield after five years of use of different types of limestone and forms of application. A clayey Oxisol received application of dolomitic and calcitic limestones and their 1:1 combination in two forms: surface application, maintained on the soil surface; and incorporated, applied on the surface and incorporated mechanically. Soil physical properties (resistance to mechanical penetration, soil bulk density and soil aggregation), soil chemical properties (pH, exchangeable cations, H+Al, and cation exchange capacity) and plant parameters (root growth system, soybean grain yield, and oat dry matter production) were evaluated five years after setting up the experiment. Incorporation of lime neutralized exchangeable Al up to a depth of 20 cm without affecting the soil physical properties. The soybean root system reached depths of 40 cm or more with incorporated limestone, increasing grain yield an average of 31 % in relation to surface application, which limited the effect of lime up to a depth of 5 cm and root growth up to 20 cm. It was concluded that incorporation of limestone at the beginning of a no-tillage system ensures a favorable environment for root growth and soybean yield, while this intervention does not show long-term effects on soil physical properties under no-tillage. This suggests that there is resilience in the physical properties evaluated.

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