UN ITED STATES E 'VIRONMENTAL PROTECTION AGENCY 

WASHI GTON D.C .. 20460 

PC Code: 014002 

DP Barcode: 403785 

Date: October 4, 2012 

MEMORANDUM 

OFFICE OF Cllf.:\llC.\L ,n n 

/\NO l'Ot!XTION PREV.:NTIO:"'i 

SUBJECT: Revised Recommendations for Tier IJ Estimated Surface Drinking Water 

Concentrations and Estimated Ground Water Concentrations (EDWCs) for 

Hydrogen Cyanamide for Use in Human Health Risk Assessment. 

TO: Bonnie Cropp-Kohlligian, Risk Assessor 

Risk Assessment Branch IV 

Health Effects Division (7509P) 

FROM: ......_ ..____ ...... 

Ibrahim Abdel-Saheb, Ph.D., Environmental Scientist ....._ 

Environmental Risk Branch VI 

Environmental Fate and Effects Division (7507P) 

THROUGH: Mark Corbin, Branch Chief 

Environmental Risk Branch VI 

Environmental Fate and Effects Division (7507P 

Office of Pesticide Programs 

Office of Chemical Safety & Pollution Prevention 

This revised drinking water memo reflects the recommendation to use the peak and annual mean 

from the Ml Cherries scenario and the 30-year mean from the CA Grapes scenario. These 

represent the highest values among all of the scenarios modeled in this assessment. 

Table I shows the EDWCs recommended for the human health risk assessment represented by 

MI Cherries scenario and CA Grapes. All registered crops were modeled to explore the highest 

exposure possible from the use of hydrogen cyanamide on those crops (Table 2). The model 

scenario producing the highest EECs was chosen to provide the EDWCs recommended for the 

human health risk assessment. 

The values generated by the models for drinking water were multiplied by a percent crop area 

factor (PCA), which represents the maximum extent to which HUC-8 watersheds in the 
2

continental US are planted to particular agricultural crops. The PCA value used (0.23) was for 

Orchard/Vineyard. 

Table 1. Estimated Drinking Water Concentrations (EDWC) of hydrogen cyanamide 

residues in surface water and groundwater recommended for use in dietary risk 

assessment. 

Scenario

Model

(application rate lb a.i./A, frequency)

Surface Water

1-in-10 year Hydrogen cyanamide Concentration 

(μg/L)*

Peak Annual 

Mean 30-Year Mean

MIcherries.std

PRZM (V. 3.12)/EXAMS (V.2.98)

(17.6 lb/acre, 1x)

50.4 3.36 0.67**

PRZM-GW (V. 1.0)

(17.6 lb/acre, 1x)

Highest daily value

Simulation Avg. value

0.841 μg/L

0.060 μg/L

*: Surface water EDWC Values were multiplied by PCA of 0.23.

** Based on the highest 30-year mean (CA grapes) among all scenarios modeled in this assessment.

Table 2. Estimated Drinking Water Concentrations (EDWC) of hydrogen cyanamide 

residues in drinking water for all scenarios modeled. 

Crop PRZM Scenario Peak Annual 

Mean

30-Year 

Mean

Apples

ORapplesSTD.txt 17.1 1.13 0.34

PAapplesSTD.txt 8.20 0.63 0.40

NCapplesSTD.txt 5.66 0.39 0.11
3

Blackberry/Blueberry GApeachesSTD.txt 4.78 0.25 0.11

Cherry MIcherriesSTD.txt 50.4 3.36 0.57

Grapes

CAgrapes_WirrigSTD.txt 46.2 2.76 0.67

NYgrapesSTD.txt 9.15 0.45 0.22

Kiwifruit/Fig CAfruit_WirrigSTD.txt 42.3 1.70 0.45

Peaches/Nectarines GApeachesSTD.txt 38.9 1.72 0.43

Fate and Transport Characterization

The available environmental fate data for hydrogen cyanamide indicate that it is not persistent in 

soil or water, and is not expected to partition into air except by spray drift at the time of 

application. Abiotic degradation processes (hydrolysis and photolysis) are not important, as 

metabolism is much quicker. Cyanamide is completely miscible with water, and in batch 

equilibrium experiments less than 2% of the mass adsorbed to sandy and silt loam soil. Thus, it is 

expected to be very mobile in soil-water systems. The degradates of cyanamide include simple 

nitrogen compounds (dicyanodiamide, guanylurea, guanidine, and urea) which are readily 

utilized as plant nutrients (Table 3). As noted above these were not considered to be of 

toxicological concern and were not included in the drinking water assessment.

Table 3. Summary of Maximum Degradate Amounts in Environmental Fate Studies of 

hydrogen cyanamide.

Degradate

Max. Degradate % of Applied (Time of Peak) Analyzed Degradates

Hydr

olysis

Aqueous 

Photolysis Aerobic Soil

Anaerobic 

Aquatic

Aerobic 

Aquatic TFD

Ground

Water

Urea 42.4% (pH 

5;30 d)

12.2% (pH 7, 

30 d)

6.7% (2 d)

13.4% (1 d)

No study

CO2 97.1% (14 d) 86.1% (28 

d)

83.6% (28 

d)
4

Drinking Water Exposure Modeling

Groundwater

The PRZM-GW User Interface is a Visual Basic tool that generates input files for PRZM, 

runs PRZM, and performs some post processing. A daily time series file, peak and average 

concentrations are the main output products. The input files that the PRZM-GW User Interface 

produces specifically satisfy the conceptual model put forth by the NAFTA group responsible for 

Tier 2 groundwater model coordination.

In the NAFTA conceptual model, pesticide is applied to a crop and hydrological processes 

drive the pesticide through the ground and into an aquifer positioned at a user-defined depth 

below the surface. Pesticide sorbs and degrades as it travels through the profile, with surface 

degradation declining in proportion with depth to a depth of 1 meter where the surface 

degradation is zero. In the case where hydrolysis occurs in the aqueous phase of the soil profile, 

the aqueous phase degradation will be the larger of the hydrolysis rate or the depth-adjusted 

surface rate. Output concentrations are the vertical spatial average of the (saturated) aquifer 

from the water table to the bottom of the well screen. 

Table 4 provides the input parameter values used for modeling of hydrogen cyanamide using 

PRZM-GW. Model output is shown in Appendix I.

Table 4. PRZM-GW (V. 1.0) input parameter values for hydrogen cyanamide.

Parameter (units)

Input Value

[Specific Parameter 

Guidance]

Data Source

Application rate

(kg a.i. ha-1)

19.7 EPA Reg. No. 54555-2

Application Method application to foliage (CAM 

2)

EPA Reg. No. 54555-2

Hydrolysis half-life 

(days)

Stable Literature Review; EFED 

Review of Data, 1993

Soil Half-life (days) 0.5 MRID 42178410

Dicyanodiamide 5.38% (0.33 d) 0.3% (6 d)
5

Parameter (units)

Input Value

[Specific Parameter 

Guidance]

Data Source

Pesticide partition or 

distribution 

coefficients

(cm3 g-1)

7.3 EPIWEB 4.1

Surface Water

For Tier 2 drinking water assessments, two models are used in tandem. PRZM simulates fate 

and transport on the agricultural field. The version of PRZM used was PRZM 3.12. For 

agricultural applications, the water body is simulated with EXAMS version 2.98. Tier 2

simulations are run for multiple (usually 30) years and the reported EECs are the concentrations 

that are expected once every ten years based on the thirty years of daily values generated by the 

simulation.

The proposed 900 ft buffer zone on the label was used to calculate the spray drift fraction input 

of PRZM model using the model AgDrift (v. 2.01). The model resulted in spray drift fraction of 

0.001.

The main assumptions used in this assessment include the following:

1- The label currently includes a spray drift buffer from aquatic resources of 900 feet which was 

incorporated into the modeling which reduced the percentage of drift from the default value of 

6.4% to 0.1%.

3- PRZM-EXAMS was run using the volatility routine due to the reported volatility. The use of 

this routine in PRZM is a non standard approach because this routine has not been validated 

within EFED. However, this refinement did not make a significant difference in the resulting 

EDWC most likely due to low Henry's law constant.

4- Several of the model inputs were not based on guideline studies but rather on open literature 

data.

5 – Several of the model inputs (described below) were estimated using EPA’s EpiSuite model 

due to a lack of data.

Table 5 provides the input parameter values used for modeling of hydrogen cyanamide using

PRZM/EXAMS. The use of estimated model inputs and open literature data does add some 

uncertainty to the reported results. Model output is shown in Appendix I.
6

Table 5. PRZM/EXAMS input parameter values for hydrogen cyanamide applied to cherry 

orchards.

PARAMETER (units) VALUE 

(S)

SOURCE COMMENT

Mol. Wt (g/mol) 42.04 Lide, D.R. 2007

Solubility (mg/L) 7.8E+5 EPIWEB 4.1 Tomlin (2003) as cited in 

EPISuite

Henry’s Law Constant 

(atm-m3/mol)

2.68 X 10-10 EPIWEB 4.1 Value calculated from 

literature values for vapor 

pressure and solubility cited 

in EPISuite

Vap. Pressure (Torr) 0.00375 EPIWEB 4.1 Tomlin (2003) as cited in 

EPiSuite

ENPY (Vap. Enthalpy; 

Kcal/mol)

16.4 O'Neil, M.J. (ed.). 2006

DAIR (Air Diffusion;

cm2/d)

12,823 Calculated* Calculated using air 

diffusion and mol.wt. of 

known compounds

Application Rate (lb a.i. 

/A)

17.6 EPA Reg. No. 54555-2

Number of Applications 1 EPA Reg. No. 54555-2

Interval between 

Applications (days)

N/A EPA Reg. No. 54555-2

Percent Cropped Area

(decimal)

0.23 USEPA. 2012 Orchard/Vineyard

spray drift fraction 0.001 AgDrift modeling using a 

proposed 900 ft buffer zone

EPA Reg. No. 54555-2

Soil Partition Coefficient

KOC, (mL/g)

7.3 EPIWEB 4.1 Data in MRID 42178415 

could not be used to 

determine coefficient.

Aerobic Soil Metabolism 

Half-life

(days)

1.5 MRID 42178410 Single half-life is available; 

multiplied by 3; Guidance 

for Selecting Input 

Parameters in

Modeling the 

Environmental Fate and

Transport of Pesticides

Version 2.1 (2009)
7

Depth of Incorporation

(inches )

0 EPA Reg. No. 54555-2

Hydrolysis Half-life @ pH 

7 (days)

stable Literature Review EFED Review of Data, 

1993.

Aerobic Aquatic 

Metabolism

Half-life (days)

5.28 MRID# 45382202 Represents the 90th 

percentile of the upper 

confidence bound on the 

mean of 2 half-life values: 

1.2, and 3.2; mean 2.2, std. 

dev, 1.41 . Guidance for 

Selecting Input Parameters 

in

Modeling the 

Environmental Fate and

Transport of Pesticides

Version 2.1 (2009)

Anaerobic Aquatic 

Metabolism

Half-life (days)

70 MRID#42178412 Anaerobic soil met. Halflife of 35 d. x2; Guidance 

for Selecting Input 

Parameters in

Modeling the 

Environmental Fate and

Transport of Pesticides

Aquatic Photolysis Halflife @ pH 7 (days)29 MRID# 42178409 Guidance for Selecting 

Input Parameters in

Modeling the 

Environmental Fate and

Transport of Pesticides

Version 2.1 (2009)

*: D1=D2*√MW2/MW1; D1: unknown air diffusion, D2: known air diffusion =14688 (for Methanol; Thoma et al., 

1992); MW2 for known = 32.04 (Methanol).

Monitoring Data

The US Geological Survey National Water Quality Assessment program (NAWQA) contains no 

monitoring data for hydrogen cyanamide in surface water or groundwater.

No monitoring data for hydrogen cyanamide was found in the US EPA Pesticides in Ground 

Water Database (1971-1991).

REFERENCES

Lide, D.R. 2007. CRC Handbook of Chemistry and Physics 88TH Edition 2007-2008. CRC 

Press, Taylor & Francis, Boca Raton, FL; p. 3-124.
8

O'Neil, M.J. (ed.). 2006. The Merck Index - An Encyclopedia of Chemicals, Drugs, and 

Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., p. 448.

PRZM-3, 2005. A Model for Predicting Pesticide and Nitrogen Fate in the Crop Root and 

Unsaturated Soil Zones: Users Manual for Release 3.12.2. Ecosystems Research Division 

National Exposure Research Laboratory Athens, GA 30605-2700.

Thoma, G. J., G. Hildebrandt, K. T. Valsaraj, L. J. Thibodeaux, and C. Springer. 1992. Transport 

of chemical vapors through soil: A landfill cover simulation experiment, J. Hazard. Mat., 30:333-

342.

Tomlin, C.D.S., 2003. The pesticide manual. A world compendium (13th ed.). British Crop 

Protection Council, Alton, Hampshire, UK.

Tomlin, CDS, ed. 2004-05. Cyanamide (420-04-2). In: The e-Pesticide Manual, 13th Edition 

Version 3.1. Surrey UK, British Crop Protection Council.

USEPA. 2004. USER’S GUIDE FOR THE AERMOD METEOROLOGICAL REPROCESSOR

(AERMET). Office of Air Quality Planning and Standards Emissions, Monitoring, and Analysis 

Division Research Triangle Park, North Carolina 27711.

USEPA. 2012. Development and Use of Percent Cropped Area and Percent Turf Area 

Adjustment Factors in Drinking Water Exposure Assessments. Office of Pesticide Programs
9

Appendix I

PRZM-GW INPUT FILE (Groundwater)

9/19/2012 7:56:52 AM; Hydrogen Cyanamide; GA - Southern Coastal Plain, Tifton loamy sand - PEANUTS

User Interface Version: PRZM-GW (Version 1.00)

***Record 3 

 0.75 0.15 0 25 1 1

***Record 6

 0

***Record 8

 1

***Record 9

 1 0.23 60 80 1 10 10 10 0 100

***Record 10

 30

***Record 11

 010561 010861 011061 1

 010562 010862 011062 1

 010563 010863 011063 1

 010564 010864 011064 1

 010565 010865 011065 1

 010566 010866 011066 1

010567 010867 011067 1

 010568 010868 011068 1

 010569 010869 011069 1

 010570 010870 011070 1

 010571 010871 011071 1

 010572 010872 011072 1

 010573 010873 011073 1

 010574 010874 011074 1

 010575 010875 011075 1

 010576 010876 011076 1

 010577 010877 011077 1

 010578 010878 011078 1

 010579 010879 011079 1

 010580 010880 011080 1

 010581 010881 011081 1

 010582 010882 011082 1

 010583 010883 011083 1

 010584 010884 011084 1

 010585 010885 011085 1

 010586 010886 011086 1

 010587 010887 011087 1

 010588 010888 011088 1

 010589 010889 011089 1

 010590 010890 011090 1

***Record 12

Place Holder

***Record 13
10

 30 1 0 0

***Record 15

Place Holder

***Record 16

 24 361 0 2 4 19.7 1 0

 24 362 0 2 4 19.7 1 0

 24 363 0 2 4 19.7 1 0

 24 364 0 2 4 19.7 1 0

 24 365 0 2 4 19.7 1 0

 24 366 0 2 4 19.7 1 0

 24 367 0 2 4 19.7 1 0

 24 368 0 2 4 19.7 1 0

 24 369 0 2 4 19.7 1 0

 24 370 0 2 4 19.7 1 0

 24 371 0 2 4 19.7 1 0

 24 372 0 2 4 19.7 1 0

 24 373 0 2 4 19.7 1 0

 24 374 0 2 4 19.7 1 0

 24 375 0 2 4 19.7 1 0

 24 376 0 2 4 19.7 1 0

 24 377 0 2 4 19.7 1 0

 24 378 0 2 4 19.7 1 0

 24 379 0 2 4 19.7 1 0

 24 380 0 2 4 19.7 1 0

 24 381 0 2 4 19.7 1 0

 24 382 0 2 4 19.7 1 0

 24 383 0 2 4 19.7 1 0

 24 384 0 2 4 19.7 1 0

 24 385 0 2 4 19.7 1 0

 24 386 0 2 4 19.7 1 0

 24 387 0 2 4 19.7 1 0

 24 388 0 2 4 19.7 1 0

 24 389 0 2 4 19.7 1 0

 24 390 0 2 4 19.7 1 0

***Record 17

 0 2 0

***Record 18

 0 0 0.5

***Record 19

Place Holder

***Record 20

 1000 0 0 0 0 0 0 1 1 0

***Record 26

 0 0 0

***Record 31

 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.97 10.0

***Record 32

 19 19 19 19 19 19 19 19 19 19 19 19

***Record 32A

 2.00 25.0

***Record 33

 8

*** Record 34,36,37 Horizon 1

 1 10 1.77 0.168 0 0 0

 1.39 1.39 0

 1 0.168 0.064 0.75 0.05475
11

 19 66 3.7 0 0

*** Record 34,36,37 Horizon 2

 2 10 1.77 0.168 0 0 0

 1.31 1.31 0

 5 0.168 0.064 0.75 0.05475

 19 66 3.7 0 0

*** Record 34,36,37 Horizon 3

 3 20 1.78 0.24 0 0 0

 1.08 1.08 0

 20 0.24 0.105 0.25 0.01825

 19 67 12.2 0 0

*** Record 34,36,37 Horizon 4

 4 20 1.67 0.257 0 0 0

 0.77 0.77 0

 20 0.257 0.19 0.25 0.01825

 19 55 21.5 0 0

*** Record 34,36,37 Horizon 5

 5 20 1.67 0.256 0 0 0

 0.462 0.462 0

 20 0.256 0.19 0.25 0.01825

 19 55 20 0 0

*** Record 34,36,37 Horizon 6

 6 20 1.65 0.241 0 0 0

 0.154 0.154 0

 20 0.241 0.17 0.25 0.01825

 19 54 20 0 0

*** Record 34,36,37 Horizon 7

 7 800 1.67 0.281 0 0 0

 0 0 0

 50 0.281 0.207 0.25 0.01825

 19 53 19 0 0

*** Record 34,36,37 Horizon 8

 8 100 1.67 0.3661 0 0 0

 0 0 0

 50 0.3661 0.001 0.25 0.01825

 19 53 21 0 0

*** Record 40

 0

*** Record 42

 YEAR 10 YEAR 10 YEAR 10 0

*** Record 45

 3 YEAR

*** Record 46

 DCON1 TAVE 33 34 1.0E3

 INFL TCUM 33 33 0.0036

 IRRG TSER
12

PRZM/EXAMS Output File (Surface Water)

stored as HcyanamideMIcherries2.out

Chemical: Hcyanamide

PRZM environment: MICherriesSTD.txt modified Tueday, 29 May 2007 at 13:56:56

EXAMS environment: ir298.exv modified Thuday, 29 August 2002 at 15:34:12

Metfile: w14850.dvf modified Wedday, 3 July 2002 at 09:05:40

Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 40.32 38.34 30.14 17.71 12.42 3.083

1962 22.88 21.73 16.62 9.099 6.24 1.545

1963 36.1 34.33 27.56 15.61 10.89 2.698

1964 0.7199 0.6845 0.5366 0.2992 0.2053 0.05097

1965 0.719 0.6836 0.5498 0.3327 0.232 0.05758

1966 0.719 0.6821 0.5396 0.3206 0.2251 0.05573

1967 4.748 4.517 3.619 2.075 1.46 0.3619

1968 0.7191 0.6797 0.5411 0.3036 0.2106 0.05204

1969 0.719 0.6836 0.587 0.3464 0.2411 0.05983

1970 0.719 0.6836 0.5329 0.2952 0.2037 0.05039

1971 1.208 1.126 0.8538 0.55 0.385 0.09527

1972 0.719 0.6836 0.5463 0.3242 0.2253 0.05569

1973 2.911 2.698 1.996 1.151 0.8123 0.2012

1974 3.338 3.155 2.334 1.319 0.9252 0.2293

1975 10.44 9.929 7.914 4.624 3.183 0.7873

1976 261 255 199 109 75.9 18.73

1977 31.18 29.82 22.65 12.04 8.228 2.038
13

1978 0.7197 0.6843 0.5566 0.3302 0.229 0.05698

1979 36.89 34.96 27.12 15.75 10.98 2.731

1980 0.7201 0.6847 0.5388 0.3077 0.2133 0.05312

1981 5.45 5.228 3.945 2.179 1.52 0.3763

1982 270 256 205 119 81.84 20.27

1983 0.7264 0.6904 0.5525 0.3329 0.2362 0.06122

1984 0.719 0.6837 0.5505 0.3205 0.2242 0.05541

1985 46.63 44.31 32.95 17.71 12.23 3.031

1986 238 228 176 93.73 64.39 15.94

1987 0.7246 0.685 0.5206 0.279 0.191 0.04925

1988 1.445 1.344 1.026 0.6313 0.4374 0.1079

1989 13.9 13.46 10.48 6.026 4.197 1.04

1990 0.7193 0.681 0.5728 0.325 0.2262 0.05616

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 270 256 205 119 81.84 20.27

0.0645161290322581 261 255 199 109 75.9 18.73

0.0967741935483871 238 228 176 93.73 64.39 15.94

0.129032258064516 46.63 44.31 32.95 17.71 12.42 3.083

0.161290322580645 40.32 38.34 30.14 17.71 12.23 3.031

0.193548387096774 36.89 34.96 27.56 15.75 10.98 2.731

0.225806451612903 36.1 34.33 27.12 15.61 10.89 2.698

0.258064516129032 31.18 29.82 22.65 12.04 8.228 2.038

0.290322580645161 22.88 21.73 16.62 9.099 6.24 1.545

0.32258064516129 13.9 13.46 10.48 6.026 4.197 1.04

0.354838709677419 10.44 9.929 7.914 4.624 3.183 0.7873

0.387096774193548 5.45 5.228 3.945 2.179 1.52 0.3763
14

0.419354838709677 4.748 4.517 3.619 2.075 1.46 0.3619

0.451612903225806 3.338 3.155 2.334 1.319 0.9252 0.2293

0.483870967741936 2.911 2.698 1.996 1.151 0.8123 0.2012

0.516129032258065 1.445 1.344 1.026 0.6313 0.4374 0.1079

0.548387096774194 1.208 1.126 0.8538 0.55 0.385 0.09527

0.580645161290323 0.7264 0.6904 0.587 0.3464 0.2411 0.06122

0.612903225806452 0.7246 0.685 0.5728 0.3329 0.2362 0.05983

0.645161290322581 0.7201 0.6847 0.5566 0.3327 0.232 0.05758

0.67741935483871 0.7199 0.6845 0.5525 0.3302 0.229 0.05698

0.709677419354839 0.7197 0.6843 0.5505 0.325 0.2262 0.05616

0.741935483870968 0.7193 0.6837 0.5498 0.3242 0.2253 0.05573

0.774193548387097 0.7191 0.6836 0.5463 0.3206 0.2251 0.05569

0.806451612903226 0.719 0.6836 0.5411 0.3205 0.2242 0.05541

0.838709677419355 0.719 0.6836 0.5396 0.3077 0.2133 0.05312

0.870967741935484 0.719 0.6836 0.5388 0.3036 0.2106 0.05204

0.903225806451613 0.719 0.6821 0.5366 0.2992 0.2053 0.05097

0.935483870967742 0.719 0.681 0.5329 0.2952 0.2037 0.05039

0.967741935483871 0.719 0.6797 0.5206 0.279 0.191 0.04925

0.1 218.863 209.631 161.695 86.128 59.193 14.6543

Average of yearly averages: 2.46598466666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run:

Output File: HcyanamideMIcherries2

Metfile: w14850.dvf

PRZM scenario: MICherriesSTD.txt
15

EXAMS environment file: ir298.exv

Chemical Name: Hcyanamide

Description Variable Name Value Units Comments

Molecular weightmwt 42.04 g/mol

Henry's Law Const. henry 2.68E-10 atm-m^3/mol

Vapor Pressure vapr 0.00375 torr

Solubility sol 7.8E5 mg/L

Kd Kd mg/L

Koc Koc 7.3 mg/L

Photolysis half-life kdp 29 days Half-life

Aerobic Aquatic Metabolism kbacw 5.28 days Halfife

Anaerobic Aquatic Metabolism kbacs 70 days Halfife

Aerobic Soil Metabolism asm 1.5 days Halfife

Hydrolysis: pH 7 0 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0 cm

Application Rate:TAPP 19.7 kg/ha

Application Efficiency: APPEFF0.99 fraction

Spray Drift DRFT 0.001 fraction of application rate applied to pond

Application Date Date 24-03 dd/mm or dd/mmm or dd-mm or dd-mmm

Record 17: FILTRA

IPSCND1

UPTKF

Record 18: PLVKRT

PLDKRT

FEXTRC 0.5

Flag for Index Res. Run IR Reservoir

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)