What fraction of the herbicide is adsorbed

Reference no: EM13207706

The herbicide 2,4,D, is applied to a golf course at a rate of 1.2 kg/ha. The organic matter content of the soil is 1%, bulk density is 1.3 g/cm3, and water content is 0.3.

(a) What fraction of the herbicide is adsorbed, and what fraction is dissolved?

(b) If the golf course is irrigated at a rate of 1.6 cm/day and the actual grass water use rate is 0.4 cm/day, how long will it take for the 2,4-D to reach the water table at a depth of 2 meters? Assume a constant and uniform soil water content of 0.3.

(c) How much (kg/ha) of the dissolved herbicide will remain when it reaches the water table? Use the decay constant for Ouachita soil and grass.

(d) By how much will the ground water concentration of 2,4-D increase if the herbicide mixes into 2 cm of saturated thickness with a porosity of 0.5?

Reference no: EM13207706

Questions Cloud

What is the corresponding horizontal distance : A runs slope a distance of 156.777 m from one point to another point at a rate of +1.5%. What is the corresponding horizontal distance between the points?

What is the cost of producing q output in the short-run : What is the marginal cost of producing a 301s unit A 401st unit If you are comfortable doing so, you may answer this question by writing down the marginal cost function directly, rather than recalculating total cost for q = 301 and q = 401.

Determine the net rate of flow of linear momentum : Determine the net rate of flow of linear momentum through the control surface.

What is the corrected measurement : A measurement was recorded as 171.278 m with a 30-m tape that was only 29.996 m under standard conditions. What is the corrected measurement?

What fraction of the herbicide is adsorbed : The herbicide 2,4,D, is applied to a golf course at a rate of 1.2 kg/ha. The organic matter content of the soil is 1%, bulk density is 1.3 g/cm3, and water content is 0.3.

Compute the specific rotation of the compound : An aqueous solution containing 9.47 g of an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 20.0 cm long.

Find the rate of change in volume : A water tank has a height of 120m, and its area of cross-section is 2000m. Water is released from the tank and the water level drops by 1 meter every minute. Find the rate of change in volume.

Which of the two people is less likely to take on risk : A driver faces a 5% probability that his car will be in an accident and will be worth nothing. Consider three drivers with cars that have value $30,000. Abdulla's utility function over the value of his car W is u(W) = ln(1 + W).

Calculate the hydraulic conductivity of this clay : A falling-head permeability test was carried out on a clay soil of diameter 100 mm and length 150 mm. In 4 minutes the head in the standpipe of diameter 5mm dropped from 680 to 350 mm. Calculate the hydraulic conductivity of this clay.

User Account

All Pages