with early in precise furrow irrigation ground water mounds developed on blocks which were detrimental to vine growth Aggie pipes were laid on grade on the clay layer of soil 4 to 5 foot deep or every 4th row of vines (forty four feet apart) to drain the perched water table and the accumulated salts from the vines root zone with early in precise furrow irrigation ground water mounds developed on blocks which were detrimental to vine growth Aggie pipes were laid on grade on the clay layer of soil 4 to 5 foot deep or every 4th row of vines (forty four feet apart) to drain the perched water table and the accumulated salts from the vines root zone Long clay cylinder horticulture, merbein, irrigation, pipes, furrow irrigation