Steady shallow water table did not decrease leaf expansion rate, specific leaf weight, and specific leaf water content in tomato plants

Abstract

It was presumed that shallow water table restricted leaf growth and some water-related parameters; therefore, they can be used as indicators of plant stress due to the water table condition. Objective of this research was to evaluate morphological stress indicators in tomato plants exposed to shallow water table. The research was conducted in two stages: (1) developing reliable LA estimation model from June to September 2016; as pre-requisite for (2) calculating and evaluating the morphological indicators for stress due to shallow water table treatments, conducted from February to May 2017. Treated plants were placed inside experimental pools. Each treatment was done by partially submerging growing substrate to the targeted water tables at 5 cm and 10 cm below surface of the substrate. Untreated control plants were kept outside the pools. Zero-intercept linear model was the selected model for leaf area estimation after evaluating 15 combinations of five regression models and three predictors. Results of this study indicated that steady water table at 5-cm and 10-cm depth did not restrain relative leaf expansion rate (RLER) and there was no significant difference in specific leaf fresh weight (SLFW) and specific leaf water content (SLWC) between treated and untreated plants, measured prior to, during, and after recovery from shallow water table treatments. In conclusion, if position of water table was steady, the shallow water table at 5-cm depth or deeper did not affect tomato growth.

Cultivation of common bean (Phaseolus vulgaris L.) subjected to shallow water table at riparian wetland in South Sumatra, Indonesia

“…Based on results of these two experiments, it is fair to assume that critical depth of water table for common bean plant is between 10 and 13.5 cm. Nonetheless, Meihana et al (2017) reported that shallow water table was less harmful if the water table was at steady position. Under field condition, however, soil water table is more likely to fluctuate.…”

5-Aminolevulinic Acid Lessened Growth Suppression in Snap Bean (Phaseolus vulgaris L.) Exposed to Shallow Water Table

“…Leaf area (LA) was estimated using state the estimation of the regression model. Specific leaf area (SLA), total leaf area (TLA), leaf area ratio (LAR) and relative leaf water content (RLWC) were calculated based on measured primary growth parameters (Meihana et al, 2017). Dry weight (DW) was measured after the leaves were exposed to 70 o C for 48 h and turgid weight (TW) was measured after rehydration for about 3 h untill a constant weight was reached.…”

Population density, multiple harvesting, and ability of Ipomoea reptans to compete with native weeds at tropical wetlands

“…In this study, the BWCS was employed. The BWCS was developed after tolerable depth of water table had been recognized (Meihana et al 2017;Lakitan et al 2018;Susilawati and Lakitan 2019;Kriswantoro et al 2020a,b). Immediately after transplanting, all pots were placed in 2m x 4m outdoor experimental pool filled with water to depth of 2 cm, for assuring water penetration into growing substrate via bottom holes of each pot.…”