Growth dynamics of tomato fruits as a main indicator of a phytomonitor

Yuri Sleptsov,Varvara Bogdanova,Mikhail Vorobyev,O Loretts,S Vinogradov,V Kukhar,N Ojha,A Ruchkin

doi:10.1051/e3sconf/202022201011

Abstract

The study of the growth dynamics of tomato fruits in greenhouses using a phytomonitor, in particular, a fruit growth sensor, shows indicators that are invisible to the human eye. Their dynamics during the day and throughout the entire period of fetal development, starting from a size of 2.7 cm to removable maturity and redness in a graphical form, allows you to quickly identify a slowdown in growth, quickly find a limiting factor and reveal the influence on the growth rate of factors such as brush rationing and cleaning other fruits in it. It must be said that the use of a phytomonitor in practice requires high qualifications of an agronomist. And if the farm does not have a sufficiently high level of agricultural technology or the staff does not know how to use the indicators of sensors, there is no point in looking for a limiting factor. For this reason, in the greenhouses of Corporation “Kombinat Teplichny” (Kiev region, the village of Kalinovka), after several years of use, they abandoned the phytomonitor, which did not recoup the funds invested in it. For Ukraine, it remains exotic, therefore, the article contains an extended description of the phytomonitor.

Highlights

The use of phytomonitoring with a sensor system has become a widespread system for diagnosing the functional state of a plant
When the signs of deviation from the optimal parameters will be noticeable externally, up to 15-20% of the crop will already be lost. This is the essence of the phytomonitor, which presents a sensor for measuring leaf temperature, a sensor for measuring the rate of xylem sap flow, a sensor for measuring stem diameter and a sensor for fruit growth
After hanging the growth sensor on fruit with size 2.7 cm, 40-42 days pass until removable ripeness

Summary

Introduction

The use of phytomonitoring with a sensor system has become a widespread system for diagnosing the functional state of a plant. The human eye is not able to notice, for example, fluctuations in micrometers (μm) of the stem diameter in case of water deficit, changes in xylem sap flow, or an increase in leaf temperature by several degrees. When the signs of deviation from the optimal parameters will be noticeable externally, up to 15-20% of the crop will already be lost This is the essence of the phytomonitor, which presents a sensor for measuring leaf temperature, a sensor for measuring the rate of xylem sap flow, a sensor for measuring stem diameter and a sensor for fruit growth. The last one is by far the most important, since the end result of all measurements is the measures taken, which are expressed in the growth rate of the fruits of any crop

Methods

Results

Conclusion