The Processing Tomato Cultivar ‘Natsunoshun’ is Susceptible to an Excess or Lack of Soil Moisture after the Flowering Stage

Abstract

An excess or lack of soil moisture are significant abiotic stresses that reduce the average yield for vegetable crops worldwide. The responses of 'Natsunoshun', a processing tomato cultivar, to water stress at three growth stages, first flower differentiation, first flowering, and fruit development, were investigated over a two-year period. The year effect on yield was not significant; however, the growth stage and the type of water stress at a particular growth stage affected yield significantly. Either an excess or lack of soil moisture after the first flowering stage were significant in reducing yield. The decrease was related to the average weight of the fruit rather than the number per plant. Under dry conditions, fruit number was the same as control plants, but there was a decrease in the reddish mature fruit ratio. On the other hand, under wet conditions plant biomass decreased, especially in the roots, even if there was a transition from wet to dry conditions. We conclude that excessive soil moisture during the first flowering stage produces slower CGR and decreased biomass in the roots, which we believe is the reason for the yield decline.

Varietal Differences in Wet Damage of Broccoli (Brassica oleracea L. var. italica) Under Waterlogging Conditions

“…Prolonged exposure to wet conditions resulted in a greater biomass reduction with a decline in photosynthesis (Fig. 6B), consistent with observations in processing tomatoes (Jitsuyama et al 2019;Ide et al 2022).…”

“…Based on previous studies (Jitsuyama et al 2019;Ide et al 2022), the wet treatment consisted of maintaining 2-3 cm of water on the soil surface. Since the pots had holes in the bottom for drainage, thick vinyl bags were used to prevent drainage during the wet treatments.…”

Analysis of yield reduction factors in processing tomatoes under waterlogging conditions

“…In a previous study, we conducted pot experiments with the cultivar 'Natsunoshun', which is the main cultivar grown in Numata, central Hokkaido. We found that waterlogging treatment after the first flowering stage significantly reduced yields (Jitsuyama et al, 2019).…”

“…Processing tomato is one of the vegetable crops that will potentially benefit from these water table control systems (Jitsuyama et al, 2019). However, it is not feasible to install these systems in all converted paddy fields, and currently, these systems are installed in less than 10% of the total available area of converted paddy fields (Jitsuyama et al, 2019). Without these systems, heavy rains are likely to produce excess moisture conditions in the clay soils of the converted paddy fields.…”

Monitoring System for Soil Moisture, Temperature, pH and Automatic Watering of Tomato Plants Based on Internet of Things

“…Maka dari itu Penyiraman harus dilakukan pagi dan sore hari agar kondisi tanaman dan kesuburan tanah tetap terjaga kualitasnya, namun pemupukan sendiri biasanya diberikan pada saat tomat berusia 1 hari dengan menggunakan pupuk kandang. Pupuk cair biasanya diberikan pada saat tomat berusia 15-20 hari supaya organnya sehat dan tidak di terserang hama [6].…”