infographic, cycle size, refreshment, stability, EC, illustration,technical, substrates,  information

Figure 1

Unstable EC: Time of first drain recorded by the climate computer is about 09:30 hrs dark blue EC is not controlled until 12:00 hrs. The result EC rises over two days. If left unchecked this can result in serious quality issues such as BER. The issue, in this case, was that cycle length was reduced to early.

infographic, cycle size, refreshment, stability, EC, illustration,technical, substrates,  information

Figure 2

Unstable EC: Start time is OK, time of 1st drain and EC reduction this time in line but drain occurs too late because of small cycle length. The result EC is unstable and rising – here the reaction was to give a night session however the correct course of action would have been to increase cycle length. If left unchecked this could have resulted in aborted fruit.

infographic, cycle size, refreshment, stability, EC, illustration,technical, substrates,  information

Figure 3

Drain and EC refreshment on time (10:00 hrs or 600W/m2)is achieved by applying large volumes in the morning 4,0-6,0 ml/J. Thereafter smaller more frequent irrigations in the relation 3,0-3,3ml/J keep EC controlled during the peak solar hrs and limit stress on the crop so that production and fruit quality is maximized.

Other learning topics

grodan