Furrow irrigation involves using small channels (furrows) between crop rows to carry water down slopes and allow it to infiltrate the soil. It is suitable for row crops and soils with moderate to slow water infiltration rates. Water is applied to furrows from supply channels via pipes or temporary breaches. The length of time water flows in furrows depends on factors like soil infiltration rate and the amount of water needed to replenish the root zone. Furrow irrigation works well for most soils except sandy soils with very high infiltration.