Explore essential facts about pesticide application timing and techniques in agriculture. Learn why correct practices are crucial for both crop health and environmental safety.
When is the optimal time of day to apply most pesticides in agricultural fields to reduce evaporation and drift?
Explanation: Early morning is usually cooler with lower wind speeds, reducing pesticide loss by evaporation and drift. Midday increases evaporation risk, while late afternoon may have fluctuating wind. Midnight can be too cool and may affect efficacy.
Why should farmers avoid applying pesticides immediately before heavy rain is forecast?
Explanation: Heavy rain after application can wash pesticides off plants and into water sources, leading to runoff. Moisture absorption, insect activity, and concentration do not directly contribute to the need for restraint before rain.
What might happen if pesticides are sprayed onto crops with wet leaves from dew or irrigation?
Explanation: Wet leaves can cause pesticides to run off the plant surface, making them less effective. Improved absorption, faster results, and plant drought are not accurate consequences in this scenario.
Why is it risky to apply pesticides when wind speeds are high in the field?
Explanation: High winds can carry pesticides to unintended areas, potentially harming non-target plants or animals. Crop absorption and pest mobility are not directly affected, and wind doesn't boost plant growth.
Why should a farmer always read and follow the pesticide product label before application?
Explanation: The label provides vital information on safe and effective usage. Saving money, increasing shelf life, or identifying pests are not primary purposes of reading the label.