2,4-Epibrassinolide mechanisms regulating water use efficiency and fruit production in tomato plants

2021 ◽  
Author(s):  
Lucas Baiochi Riboldi ◽  
Rafaella Zanetti Dias ◽  
Paulo Roberto de Camargo e Castro ◽  
Sérgio Tonetto de Freitas
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Fruit Production ◽  
Tomato Plants ◽  
Use Efficiency

Effect of CO2 enrichment on canopy photosynthesis, water use efficiency and early development of tomato and pepper hybrids

2011 ◽  
Vol 59 (3) ◽  
pp. 275-284 ◽  
Author(s):  
S. Bencze ◽  
I. Keresztényi ◽  
B. Varga ◽  
B. Kőszegi ◽  
K. Balla ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Co2 Enrichment ◽  
Total Biomass ◽  
Tomato Plants ◽  
Area Basis ◽  
Rate Of Photosynthesis ◽  
Biomass Components ◽  
Use Efficiency ◽  
Net Assimilation

The effect of CO2 enrichment on the rate of photosynthesis and the water use efficiency (WUE) of young pepper and tomato plants was studied in the phytotron. A CO2 level of 1000 ppm significantly increased the net assimilation rate in the upper foliage, while the increase was even more considerable in the lower layers of the canopy, with values of up to 100%. The 1500 ppm CO2 level caused a further substantial increase in CO2 assimilation and at least doubled (in tomato) or tripled (in pepper) the water use efficiency on a leaf area basis compared to the ambient values. Although the response in terms of photosynthesis and WUE was not variety-specific, there were differences between the pepper hybrids in the biomass components, exceeding 100% for the total biomass at the 1500 ppm CO2 level. In tomato, however, there was no significant variation in the total biomass of the three hybrids investigated in this early phase of development at either CO2 level.

scholarly journals Water use efficiency, biomass production, nitrogen and potassium uptake and yield of tomato (Lycopersicon esculentum cv. Ratan) Planta grown under surface drip and flood irrigation

2013 ◽  
Vol 38 (2) ◽  
pp. 207-215
Author(s):  
AHMZ Ali ◽  
MK Rahman
Keyword(s):  
Lycopersicon Esculentum ◽  
Water Use Efficiency ◽  
Leaf Area ◽  
Water Use ◽  
Biomass Production ◽  
Drip Irrigation ◽  
Flood Irrigation ◽  
Tomato Plants ◽  
Use Efficiency ◽  
Surface Drip Irrigation

An experiment was conducted in wooden boxes to evaluate water use efficiency, biomass production, nitrogen and potassium uptake and yield of tomato plants (Lycopersicon esculentum) grown under flood irrigation (FI) and surface drip irrigation (SDI). Leaf area, leaf area index, biomass production and yield of tomato plants were significantly (P<0.05) higher in SDI than FI treatment. Biomass production (g/plant) was 53.3 and 42.2 and yield of tomato (kg/plant) was 1.27 and 0.99 in SDI and FI treatments, respectively. Surface drip irrigation increased water use efficiency (Kgm-3) of tomato plants by two fold (37.88) compared to flood irrigation ( 19.88). Significantly (P<0.05) higher concentrations of nitrogen in leaf (3.22%) and stem (2.62 %) were measured for tomato plants grown under SDI than FI (2.63 and 2.19 %). Potassium concentrations on the other hand, showed no significant differences. DOI: http://dx.doi.org/10.3329/jasbs.v38i2.15611 J. Asiat. Soc. Bangladesh, Sci. 38(2): 207-215, December 2012

scholarly journals Response of bell pepper crop subjected to irrigation depths calculated by different methodologies

2018 ◽  
Vol 22 (1) ◽  
pp. 45-50
Author(s):  
Gustavo H. da Silva ◽  
Mariane G. Ferreira ◽  
Silvio B. Pereira ◽  
Fábio T. Delazari ◽  
Derly J. H. da Silva
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Block Design ◽  
Irrigation Management ◽  
Fruit Production ◽  
Accurate Estimation ◽  
Randomized Block Design ◽  
Irrigation Depth ◽  
Growth Production ◽  
Use Efficiency

ABSTRACT Water must be supplied to a crop in the proper amount and in a timely manner. Vegetables require a good water availability in soil during their entire cycle. Thus, it is very important the implementation of an irrigation management and accurate estimation of water requirement. The objective of this work was to evaluate the effect of five irrigation depths estimated by the dual-Kc and single-Kc methodologies on the characteristics of growth, production and water use efficiency in the pepper crop. A randomized block design was adopted in a split plot arrangement. The effect of five irrigation depths (50, 75, 100, 125 and 150% of crop evapotranspiration - ETc) was evaluated in the plots, and the methodologies were evaluated in the subplots. It was evaluated the root dry matter, total fruit production, leaf temperature, number of aborted flowers and water use efficiency. The interaction between both effects was not significant for any of the variables. The effect of methodology was observed only on the number of aborted flowers. The effect of the irrigation depths was significant on all variables. The irrigation depths that lead to the best agronomic characteristics were superior to 100% of ETc. The ratio between the irrigation depths estimated by single-Kc and dual-Kc methodologies was 1.14. Single-Kc methodology and irrigation depth of 143% ETc were more suitable for the horticulturist. The most efficient irrigation depth in the use of water was 105% ETc.

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