Chloride Changes Soil–Plant Water Relations in Potato (Solanum tuberosum L.)

Abstract

There is evidence that chloride (Cl―) can lead to both an improved hydration and water use efficiency in plants due to its osmotic properties. The potato crop is widely assumed to be sensitive to Cl―. This is based on studies which found tuber yield or tuber starch reductions following a Cl― fertilization. However, there are also contradictory reports which could not find any detrimental effect of Cl― fertilization on potato plant development. As potato is inefficient in the use of water, we aimed to test if it is possible to improve the hydration status of potato without reducing tuber yield and dry matter by means of Cl― fertilization. We conducted a pot experiment with four different Cl― doses and investigated soil–plant water relations, biomass, tuber yield and dry matter development. Our findings deliver an indication that the potato crop is much less sensitive to Cl― than previously assumed and, more importantly, that a Cl― supply can indeed improve the potato shoot water status. This happened without impairing tuber yield and dry matter. Since potato is very sensitive to drought stress, we assume that Cl― fertilization is a promising measure to improve the drought resilience of potato.

Effects of Source and Rates of Potassium Fertilizer on Yield Traits and Potassium Use Efficiency of Potato in a Kenyan Ferralsol

“…In this study, higher yield response due to KCL may be attributed to sufficient moisture, which was within weekly recommended range between 12.7mm (at emergence) -50mm (at tuberisation to senescence) (https://cropwatch.unl.edu /potato /plant_g rowth). Results from this study also confirm that certain potato varieties are less sensitive to Clin KCL [19]. Higher yield increases due to K2SO4 than KCL in drier season may be attributed to drought stress tolerance conferred by potassium sulphate [20], possibly due to improvement of water use efficiency in potato [21].…”

Effectiveness of Measures to Reduce the Influence of Global Climate Change on Tomato Cultivation in Solariums—Case Study: Crișurilor Plain, Bihor, Romania

“…The water flow that was pumped during different periods of the growing season was estimated using the characteristic flow curve of the chosen pump with power supply (W) and the required pumping height (Figure 5). The Angstrom-Prescott Equation (10), was used to estimate the average daily global solar radiation H (Whm −2 ), with the following form [82]: H = Ho (0.2881 + 0.7429 σ 0.6168) (10) where:…”

“…The complex effects of climate change on agriculture are manifested by reducing water reserves in the soil, drastically reducing the accessibility of water to plants, declining agricultural production, and, thus, reducing the diversity, structure, composition, and distribution of crop plants [9][10][11]. It is estimated that the main climatic element responsible for the growth and production of crops is temperature, which together with rainfall influences evapotranspiration (ET).…”

Effectiveness of Measures to Reduce the Influence of Global Climate Change on Tomato Cultivation in Solariums. Case Study: CrișUrilor Plain, Bihor, Romania

“…(Figure 6.) The Angstrom-Prescott equation (10), was used to estimate the average daily global solar radiation H (Whm -2 ), with the following form [79]: H = Ho (0.2881 + 0.7429 σ 0.6168); (10) Where:…”

“…The complex effects of climate change on agriculture are manifested by reducing water reserves in the soil, drastically reducing the accessibility of water to plants, declining agricultural production and thus reducing the diversity, structure, composition and distribution of crop plants [9,10,11]. It is estimated that the main climatic element responsible for the growth and production of crops is temperature, which influences, together with precipitation, evapotranspiration (ET), which is, through the two components (evaporation + perspiration) the way to measure the consumption of water of crops [12,13,14].…”