iran , the western indian subcontinent and central asia . [ ] [ ] [ ] [ ] traces of onions recovered from bronze age settlements in china suggest that onions were used as far back as bce, not only for their flavour, but the bulb's durability in storage and transport. [ ] [ ] [ failed verification ]...
for both watering and feeding . it is a reasonably accurate and flexible method, but is also slow and costly on a large scale. hose pipe. this also can be used for watering and feeding, and is a flexible and accurate method in skilled hands. on the other hand it is costly in terms of manpower and can...