WeedSmart is a decision-support tool primarily designed to help farmers manage their fields by providing information that will guide them to efficiently manage and control weeds.

While there are many possible definitions, the simplest is that a weed is any plant out of place.

Weeds are becoming increasingly important primarily due to limitations in both water and labor availability. Crop intensification and direct seeding are increasing and these changes mean that weeds can be more costly and more difficult to control. For example, the development of new varieties and irrigation opened the door for increased intensification and profits for farmers. The combination of the use of shorter stature varieties, plus the increase in intensification has resulted in greater weed pressure due to less competitive (shorter stature) varieties. Multiple rice crops mean more weeds.

Another shift is the move to direct seeding as labor prices become higher. Direct seeding (especially dry direct seeding) results in greater weed pressure. The traditional system of transplanting gave the crop a competitive advantage over the weeds. In addition, the crops were usually transplanted into standing water – which was an additional factor reducing weed pressures.

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