Which of the following will not increase the efficiency of water use by plants in an irrigation system?
A) the use of herbicides to control weeds
B) the use of drip irrigation for fruit trees
C) the use of crop residues to reduce evaporation
D) the use of concrete-lined delivery ditches
E) the use of flood irrigation for forage crops
Question 2
Humus indirectly affects plant growth through its effects on soil physical and chemical properties, but humic substances have not been shown to affect plant growth processes directly.
Indicate whether the statement is true or false
Parasitic plants.
Results from sequential study of two cohorts tested at three ages and at three different points in t
Louis Comfort Tiffany, Tiffany Studios, Water-lily table lamp.
Large water tank, possibly a public or ritual bathing area, from Mohenjo-daro, Indus Valley ...
Wet the forearms and hands from elbow to fingertips. Keep the hands lower than the elbows. Water ...
Planet Earth compared to all its water and air!