Table 4: Economic analysis of durum wheat as influenced by nitrogen and sulphur fertilization at sinana on- farm.

N

S

GY

AGY*

UnGFB

PC

AGFB

UC

GC

AC

TVC

UnNB

ANB

0

0

3753.84

3378

20,271

11.7

24,325

0

0

0

-

20,271

24,325

0

15

3449.91

3105

18,630

12.5

24,839

0

286.52

25

312

18,318D

24,528

0

30

3773.66

3396

20,378

13.1

29,208

0

573.04

50

623

19,755

28,585

0

45

3872.70

3485

20,913

12.5

27,883

0

859.56

75

935

19,978

26,949 D

0

60

3980.25

3582

21,493

12.4

28,300

0

1146.08

90

1,236

20,257

27,063

60

0

4232.38

3809

22,855

12.5

30,473

1695.65

0

25

1,721

21,134

28,752

60

15

4649.75

4185

25,109

12.1

31,804

1695.65

286.52

50

2,032

23,076

29,772

60

30

4286.58

3858

23,148

12.1

29,320

1695.65

573.04

75

2,344

20,804D

26,977 D

60

45

4437.30

3994

23,961

12.8

33,147

1695.65

859.56

90

2,645

21,316

30,501

60

60

4336.67

3903

23,418

13.3

34,346

1695.65

1146.08

115

2,957

20,461D

31,390

120

0

4636.31

4173

25,036

11.7

30,043

3391.30

0

50

3,441

21,595

26,602 D

120

15

4627.12

4164

24,986

11.9

30,817

3391.30

286.52

75

3,753

21,234D

27,064

120

30

4959.36

4463

26,781

12.2

34,368

3391.30

573.04

100

4,064

22,716

30,304

120

45

4883.23

4395

26,369

11.6

31,204

3391.30

859.56

125

4,376

21,994D

26,828 D

120

60

4816.09

4334

26,007

13.2

37,710

3391.30

1146.08

150

4,687

21,320D

33,023

180

0

4910.58

4420

26,517

12.4

34,914

5086.95

0

75

5,162

21,355

29,752 D

180

15

5072.28

4565

27,390

12.8

37,890

5086.95

286.52

90

5,463

21,927

32,426

180

30

4945.20

4451

26,704

11.4

30,710

5086.95

573.04

115

5,775

20,929D

24,935 D

180

45

5329.39

4796

28,779

12.2

36,933

5086.95

859.56

140

6,087

22,692

30,846

180

60

5421.50

4879

29,276

13.0

41,474

5086.95

1146.08

165

6,398

22,878

35,076

N = Nitrogen (Kg ha-1); S = Sulfur (Kg ha-1); GY= grain yield (Kg ha-1); AGY = adjusted grain yield down to 10%; UnGFB = Gross Field Benefit (Birr ha-1) without premium price; PC= Protein content (%); AGFB = Gross Field Benefit (Birr ha-1) with premium price based on protein content; UC= cost of Urea; GC= Cost of Gypsum (ETB); AC= cost of application (ETB); TVC= Total Variable Cost (Birr ha-1); D = dominated technology