Treatment flowers were marked and bagged with finemesh (c. 0.3 mm) nylon net bags until the fruits were fully developed.
Samples were bagged and stored at the field station in a dry place at ambient temperature, until analysed within 3 d of collection.
Aphids were collected from the bagged plants by dipping and shaking the plants in a tub of hot water.
The trap heads were replaced on an annual basis, the old head being bagged and returned to the laboratory for processing.
Tubers are collected and bagged from the screen at which they stop.
Immediately, the bunches were bagged with blue plastic sleeves.
Eight of the collections came from bagged inflorescences.
Developing seeds were harvested from ears that had been bagged prior to presentation of the silks, control-pollinated and tagged with the pollination date.
