58. a storm dropped about 10 cm of rain in 60 min on your field. After the storm

Question

58. a storm dropped about 10 cm of rain in 60 min on your field. After the storm is over, you observe ponding in some areas of the field. The ponding may be due to:

59. What is the water potential of the soil in the ponded areas?

60. A day later the ponding has disappeared but the soil is still saturated. What is the water potential of the saturated soil?

61. As the water drains from the saturated soil, what happens to the soil water potential?

62. The water draining from the saturated soil is known as ______water and is held in______ pores.

63. What fraction of the water in Q. 62 is available to plants?

64. What drives the movement of water in Q. 62?

65. After the saturated soil drains for a couple of days, the soil is at:

66. What is reasonable value of soil water potential for the soil in Q. 65?

67. Once the soil has reached the water potential in Q. 65, what drives the movement of water within the soil profile?

68. It’s been two weeks since the rainstorm. The corn is growing well, although the water content of the soil has decreased substantially. The water loss is driven mostly by:

69. It’s been two months since the rainstorm, and no rain has fallen since. At what value of soil water potential do your plants wilt beyond recovery?

Explanation / Answer

58) Generally rain water after the storm is distributed immediately in the form of runoff into a drainage or infiltration into the ground.

Ponding will ocuur when there is no proper drainage system or when the soil was unable to absorb the rain water.

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