Method and system for time of pollinating cereal crops

A method of intentionally pollinating a Poaceae crop comprising:

• (i) monitoring changes in one or more parameters for a period of time between 12:00 p.m. to 11:59 p.m. on one or more days, wherein said one or more parameters are selected from the group consisting of temperature, vapor pressure deficit, and relative humidity;
• and
• (ii) intentionally pollinating said crop with collected and stored pollen, wherein said pollination begins after at least one of the following periods of time has been reached:
• a. when the temperature is between 7 and 38 degrees Celsius and has been lower than a previously monitored temperature for at least thirty minutes, before 11:59 pm on the same day;
• b. when the vapor pressure deficit is between 0.1 and 1.5 kPa and has been lower than a previously monitored vapor pressure deficit for at least thirty minutes, before 11:59 pm on the same day;
• c. when the relative humidity is between 75% and 98% and has been higher than a previously monitored relative humidity for at least thirty minutes, before 11:59 pm on the same day;
• wherein said intentional pollination results in one or more outcomes selected from the group consisting of maximizing yield, maximizing seed set, or maximizing a desirable characteristic of the crop.