Potato Varietal Tests

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Transcription:

Potato Varietal Tests Two nurseries were cftab7iched during 1967, one at the Redmond location and the other at the Madras location of the Central Oregon Experiment Station. The same twenty-four varieties or lines occurred in each nursery. Both nurseries received too much fertilizer and this may have changed the relative placement of the variety in comparison to other years. As nearly as could be calculated, approximately 35# of 15-1-1 fertilizer was banded at each location. No early blight was cbserved at either location, this fact very mere affected the relative placement of varieties or lines like Haag, which are highly susceptible to this disease. While the placement of the varieties varied somewhat at each location (See Tables No. 6 and 7), no variety or line occurring in the top third of the varieties in one nursery occurred in the bottom third of the varieties in the other nursery. The three red varieties, Red Pontiac, Red Lasoda and La Rouge, were probably the highest yielding varieties of the group. Shoshoni, Monona and Haag produced better under this high fertility low Early Blight relationship than they have in passed years. Norgold and Kennebec did not produce relatively well in this environmental condition. Russet Burbank produced roughly 2/3 the tonnage of the top yielding variety in the Redmond Nursery with 2.8 tons per acre and approximately 3/4 at the Madras Station. The percentage of No. 1 potatoes was very low at each location. This was very probably due to the interaction of the hot summer x high fertility x irrigation. The specific gravity of all the varieties was considerably lower at Redmond than at Madras and the yield was much higher. These points probably reflect the difference in irrigation methods. The sprinkler system at Redmond made more nutrients available all of the time while the water penetration problem at Madras, where row irrigation was fol- ie lowed, limited the availability of the nutrients. Of the varieties shown in Table No. 8, not one variety is capable of competing in the same market as Russet Burbank. Several have russeting, but are round or ovoid rather than long. Many of the varieties are round and have smooth skin.

15 Yield wise it would not be difficult to replace Russet Burbank and in a normal year many varieties will have a better grade. However, as long as the market is established around a long, white russetted potato with good keeping qualities and relatively high specific gravity, the variety which replaces Russet Burbank in this market will have to be equal to or superior in these qualities. The varieties tested here do not have these qualities. Norgold has the shape and russeting, but generally the yield is low and keeping qualities are poor. Some of the round, white varieties and lines tend to green in the soil even though they are covered with soil. The greening was not associated with cracks in the soil, but rather the depth of the soil above the tuber. It is questionable whether there is need to continue with two locations of this experiment and possibly it is needless to continue the testing on a continual basis. Perhaps one testing program in the state could eliminate the large majority of the new material and the local areas test only that material which may have an influence on their market. Appendix Tables No. 24 and 25 present the Specific Gravity by Replicate and shows the multiple range segnificance at the five percent level.

Table No. 6 The Yield, Multiple Range Significance, Yield of No. 1 Potatoes, Percentage of arket Grade and Specific Gravity for Twenty-four Varieties or Lines of Potatoes Grown at The Redmond Location of the Central Oregon Experiment Station - 1967 Variety or _ Line Total Yield Tons/Acre Total Yield 5% Significance Yield No. 1 Tons/Acre No. 1 Market Grade Percentage S No. 2 Culls Specific Gravity_ Red Pontiac Red Lasoda La Rouble Katandin Shoshoni B5144-2 Sebago Alaskan Russet Haag Monona Russet Rural 84987-14 B2759-5 Penobscott 8558-1 Kennebec Snowflake Russet Burbank 84814-2 8583-1 Norgold 8382-14 B4987-3 84784-1 L.S.D.@5% C. V. % 3.72 29.63 28.52 26.8 24.14 23.91 23.39 23.33 23.8 23.5 22.9 22.88 22.85 22.68 22.22 22.1 21.53 2.81 2.24 19.58 19.47 18.18 14.83 13.34 3.37 11.96 9.33 31.16 9.19 31.79 7.1 24.25 12.48 47.73 1.19 42.29 1.34 43.43 5.13 22.52 8.36 35.42 1.51 44.56 11.45 49.66 1.45 45.28 7.16 31.23 7.9 34.44 7.13 31.35 8.76 39.23 2.73 39.42 9.88 44.94 12. 57.35 8.82 44.27 1.71 55.17 8.7 42.16 8.2 43.67 4.1 28.9 5.5 4.96 38.17 34.58 4.28 3.82 39.32 29.64 44.35 25.85 26.92 32.41 31.5 32.38 3.73 38.96 24.97 3.58 28.1 11.69 27.58 15.67 35.38 25.62 28.21 14.8 3.67 1.63 33.63 1.65 35.47 1.6 21.46 1.66 18.46 1.61 26.93 1.56 33.13 1.78 38.72 1.69 28.51 1.69 17.93 1.65 23.68 1.72 36.39 1.69 34.82 1.83 29.69 1.69 35.79 1.63 3. 1.72 27.5 1.82 3.96 1.71 28.15 1.67 29.16 1.69 22.47 1.63 3.71 1.74 43.7 1.63 44.24 1.6.6

Table No. 7 The Yield, Multiple Range Significance, Yield of No. 1 Potatoes, Percentage of Market Grade and Specific Gravity for Twenty-four Varieties or Lines of Potatoes Grown at The Madras Location of the Central Oregon Experiment Station - 1967 Variety or Line Total Total Yield Yield 5% Tons/Acre Significance Yield No. 1 Tons/Acre No. 1 Market Grade Percentage 1 No. 2 Specific Culls _fgravity La Rouge Shoshoni Monona Penobscott 82759-5 Red Lasoda Red Pontiac Katandin Haag Russet Rural Russet Burbank Sebago 85144-2 Snowflake Alaskan Russet 8558-1 Norgold 8583-1 Kennebec 84784-1 84987-3 B4987-14 84814-2 8382-14 23.28 22.9 2.67 19.4 18.9 18.64 18.44 18.15 18.4 17.89 17.64 17.24 16.41 16.29 15.98 15.46 12.94 12.88 12.74 11.45 1.77 1.71 1.65 9.28 L.S.O. 5% 4.3 C.V. % 21.34 9.25 39.85 8.65 38.73 8.25 4.2 7.5 38.81 6.1 32. 7.44 4.43 7.36 39.41 8.48 46.16 5.6 431.42 5.27 29.45 6.33 34.95 5.1 29.4 7.73 47.33 5.75 35.35 5.18 32.73 5.1 32.48 5.67 42.91 4.9 38.64 5.87 46.26 3.69 33.9 2.4 23.61 4.35 41.53 3.78 36.52 3.86 43.17 1 26.26! 24.19 ' 26.34 I 13.94 14.24 f 22.88 1.51 25.43 27.51 24.79 19.15 26.73 41.3 25.36 24.91 I 17.49 18.34 13.27 15.93 15.41 26.21 16.41 9.29 16.5 33.89 1.75 37.7 1.78 32.96 1.7 47.25 1.83 53.76 1.9 36.69 1.77 5.7 1.67 28.4 1.81 41.7 1.82 45.76 1.8 45.9 1.85 43.87 1.95 32.57 1.72 39.29 1.82 42.35 1.76 5.3 1.72 38.74 1.65 48.8 1.81 37.81 1.81 51.5 1.68 5.18 1.72 42.6 1.73 54.19 1.74 4.79 1.89

Table. 8 Physical Characteristics of Twenty-four Varieties or Lines of Potatoes Grown by the Central. Oregon Experiment Station - 1967 Variety or Line Red Pontiac Red Lasoda La Rouge Katandin Shoshoni 85144-2 Sebago Alaskan Russet Haag Monona Russet Rural 84987-14 82759-5 Penobscott 8558-1 Kennebec Snowflake Russet Burbank 84814-2 8583-1 Worgol d 8382-14 84987-3 ib4784-1 Skin Skin Color Russeting Red slight Red smooth Red smooth White smooth white medium white smooth white slight white heavy white medium white smooth white medtheavy white i slight white slight white smooth white slight white I smooth white j heavy white i heavy white smooth white heavy white smooth white i smooth white slight Eye Longitudinal 1 Crossection Depth Shape Shape 1-- deep round i ovid to round med.-deep 1 round 1 ovoid 1round-oblong!round-ovoid round ;flat to ovoid some deep 1round flat to ovoid long ;flat to ovoid round ;flat to ovoid long round deep round!flat to ovoid deep round i ovoid long 1 ovoid round i ovoid round ovoid round ovoid round to long! flat round ;flat to ovoid long (flat to ovoid round 'flat to ovoid!short dormancy period (1) round flat long round round round ovoid ovoid Remarks small tubers strong tcndoncy dir deep stem&blossomend pits! small tubers Ismail tubers!tendency to green poor keeper,heavy greening; (1) Breaking dormancy by 12/2 perhaps.ttorage temperatures too high

61 Appendix Table No. 11 The Effect of Nitrogen, Phosphate and Potassium Fertilizer Applications on the Yield of Russet Burbank Potatoes A. E. Albertsen Farm, Powell Butte, Oregon - 1967 Fertilizer Application Yield of Potatoes in Tons Per Acre By Replicate P 2 5 II III IV Ave. 1 (2) 75/ 8 (1) 9.1 3 7.91 1,.79 9.281 11.316 1.557 8.625 1.166 11.75 1.419 1.35 1.615 8.729 8.487 11.385 9.534 9.591 11.178 9.522 1.97 24 75 (2x2) 225 (2x2) 45 (2x2) 225 (disc) 9.488 7.91 9.212 12.282 6.279 9.373 11.454 7.91 9.61 6.452 12.351 8.91 11.178 8.39 9.476 11.661 12.282 11.972 45 (disc) 225 (plow) 45 (plow) 75/ 75/375 8.487 6.486 1.178 6.17 9.39 7.452 13.524 9.821 9.177 13.179 9.614 11.661 8.453 1.97 8.832 13.248 9.396 5.555 11.385 8.66 8/8 25 16 25 24 75/375 75/ 75/375 75/375 75/375 (1)1 7.211 6.59 12.351 8.717 11.247 9.66 1.454 9.453 12.282 1.868 9.833 8.591 11.454 9.959 9.729 9.419 12.213 1.45 4 (1) No Zinc - All other treatments received 3# Zn SO4 in band Replication lost to water rot

Appendix Table No. 12 The Effect of Nitrogen, Phosphate and Potassium Treatments on the Market Grade of Russet Burbank Potatoes Grown on the A. E. Albertsen Farm, Powell Butte, Oregon - 1967 Firtilizer4Wcation N P 2 5 1 oz.+ 1 oz.- Total 1 oz.+ No. 2 1 oz.- Total Culls 8 75/ 4.66 54.66 3.34 69, 2. 57.66 6.66 55.66 2.66 56. 59.32 2, 1. 12. 62.34.66 12. 12.66 59.66 2. 14.34 16.34 62.32 2. 9.34 11.34 58.66.66 17. 17.66 28.66 25. 24. 26.34 23.66 24 75 (2x2) 225 (2x2) 45 (2x2) 225 disc 3.3C 56.58 2. 59. 4.74 54.22.66 43. 8.7 49.2 59.9-2. 2.73 1.5 61. 6. 12. 18. 58.96 5.7 11.44 17.14 43.66 4.34 24. 28.34 58.52 4.94 18.18 23.12 29.56 21. 23.88 28. 18.36 45 disc 225 plow 45 plow 75/ 75/375 8.34 55. 5.34 6.32 7.34 52. 6.4 52.88 6.8 53.6 63.34 3.34 12.34 15.68 65.66 6. 11. 17. 59.34 9.66 11.66 21.32 58.92 5.42 14.54 19.96 6.4 6.72 1.16 16.88 21. 17.34 19.66 21.1 22.72 8/8 25 16 25 24 75/375 75/ 75/375 75/375 75/375 6.78 48.54 4.56 54.7 4;62 52.8 2.66 43. 8. 5.32 55.32 9.84 11.86 21.7 59.26 3.4 15.2 18.6 57./:2 1.8 j 12.6 23.4 45.66 1.34 16.66 27. 58.32 13. 8. 21. 22.98 22.66 19.18 27.34 2.66 _1

63 Appendix Table No. 13 The Effect of Nitrogen, Phosphate and Potassium Fertilizer Treatments on the Specific Gravity of Russet Burbank Potatoes A. E. Albertsen Farm, Powell Butte, Oregon - 1967 Fertilizer Application N P2O5 K I Specific Gravity By Replicate II III IV Ave. 16 8 16 75/ pl (1) (2) 1.74 1.79 1.73 1.8 1.8 1.77 1.84 1.75 1.82 1.82 1.85 1.82 1.73 1.79 1.81 1.79 1.82 1.74 1.8 1.81 24 16 16 16 16 75 (2x2) 225 (2x2) 45 (2x2) 225 disc 1.83 1.77 1.75 1.76 1.75 1.79 1.81 1.75 1.8 1.81 1.78 1.79 1.77 1.69 1.8 1.8 1.79 1.76 1.75 1.79 16 16 16 16 16 45 disc 225 plow 45 pl 75/p1 75/375 pl 1.77 1.77 1.72 1.71 1.74 1.78 1.78 1.75 1.75 1.71 1.78 1.78 1.74 1.77 1.77 1.78 1.78 1.74 1.74 1.74 25 25 8/8 16 16 24 16 75/375 pl 75/ pl 75/375 p1 75/375 pl 75/375p1(1) 1.71 1.75 1.7 1.73 1.71 1.72 1.77 1.72 1.73 1.72 1.73 1.73 1.71 1.7 1.71 1.72 1.75 1.71 1.72 1.71 (1) No zinc - all other treatments received 3# Zn SO4 in band (2) Replication lost to water rot

Appendix Table No. 14 The Effect of Nitrogen, Phosphate and Potassium Fertilizer Applications on the Yield of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Application 1 "N P 2 5 K Yield of I Potatoes in Tons By Replicate II III Per Acre IV Ave. 1.74 17.871 15.318 18.837 15.525 14.421 16.836 17.43 14.283 15.646 8 15.594 18.1 117 17.181 19.493 17.64 2.84 19.665 15.525 19.9 18.751 24 18.96 14.94 14.352 14.835 15.749 p1(2) 23.426 16.353 12.765 2.666 18.33 25 19.286 13.593 17.181 16.491 16.638 25 8 ' 19.976 17.319 12.6. 16.77 16.345 25 16 19.148 18.216 19.941 15.663 18.242 25 24 21.98 13.386 18.63 14.628 17.138 25 16 p1(2) 19.838 15.337 16.56 18.96 17.673 15.111 16.353 11.937 17.595 15.249 25 16 16,422 19.389 2.148 11.523 16.87 25 16 (1) 16.215 17.595 15.594 21.356 17,69 35 16 1 15.18 18.665 17.526 16.629 17. 8 13.11 15.525 16.8 16.422 15.266 25 8 14.49 18.561 14.628 12.351 15.8 1 16 i 1.74 11.247 11.73 19.113 L..D. O 5%' 13.91 ns C. V. % 17.48 (1) Received 3#/A Zn SO 4 remainder of Treatments no Zinc (2) Phosphate plowed down - other treatments banded.

Appendix Table No. 15 The Effect of Nitrogen, Phosphate and Potassium Treatm2nts on the Market Grade of Russet Burbank Potatoes - Madras Location - Central Oregon Experiment Station - 1967 r- Fertilizer Application P2:5 No. 1 No. 2 1 oz.+ 1 oz.- Total 1 oz.+ 1 oz.- Total Culls 4.33 14. 16. 3. 22.23 17.5 29.62 13.76 16.26 3.2 21.76 16. 37.76 32.26 8 19.5 15. 34.5 22.76 19.76 42,52 23. 14.76 12.76 27.52 18.5 32.76 3.76 24 17. 28.5 45.5 9.76 29.26 or,- 19.5 pl(2) 25 25 8 25 16 25 24 25 16 pl(2) 25 16 25 16 35 16 (1) 16.26 2. 36.26 14.76 15.26 2.5 35.76 1.26 15. 17.26 32.26 14. 16.76 18, 34.76 17.5 11. 11.26 22.26 15. 14.76 18.26 33.2 18. 9.5 19.5 29. 12.5 13.5 18.5 32. 13.26 1.26 15. 25.26 14.26 11. 13.26 24.26 25.26 2. 16.76 2.76 19.76 19.26 19.26 24. 24.5 23.76 26.5 34.16 27.2 34.76 37.26 3-1.26 37.26 36.5 37.76 38.2 51.76 29. 37.26 33. 28. 3.5 29.76 34.5 3.26 36.76 24. 8 25 18 1. 19.76 29.76 1.76 11.76 17.76 29.52 16.76 13. 15.26 28.26 14.5 25.5 36.26 2.5 37.26 22.76, 37.26 34. 33.26 34.5 (1) 3# Zinc Sulphate per acre - other treatments no zinc (2) Phosphate plowed down prior to planting

Appendix Table No. 16 The Effect of Nitrogen, Phosphate and Potassium Fertilizer Applications on the Specific Gravity of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Application N P2O5 - K I Specific Gravity By Replicate II III IV Ave. -, 1.96 1.95 1.93 1.91 1.94 1.88 1.93 1.91 1.94 1.93 8 1.9 1.96 1.87 1.91 1.91 1.89 1.91 1.94 1.88 1.91 24 1.92 1.93 1.95 1.92 1.93 ' p1(2) 1.37 1.92 1.9 1.33 1.39 25 1.91 1.95 1.95 1.9 1.93 25 89 1.84 1.91 1.92 1.94 1.3 25 16 1.9 1.86 1.85 1.83 1.87 25 24 1.9 1.37 1.93 1.94 1.91 25 16 p1(2) 1.86 1.92 1.84 1.95 1.37 1.94 1.91 1.93 1.91 1.94 25 16 1.39 1.89 1.92 1.93 1.91 25 16 (1) 1.91 1.96 1.9 1.33 1.9 35 16 1.93 1.91 1.92 1.86 1.91 8 1.94 1.9 1.9 1.89 1.91 25 8 1.95 1.95 1.89 1.87 1.92 1.94 1.96 1.95 1.89 1.94 L.S.D. 5% ns C. V. %.298 (1) 3# Zinc Sulphate per acre - other treatments no Zinc (2) Phosphate plowed down prior to planting

67 Appendix Table Po. 17 The Effect of Several Fertilizer Treatments on the Percentage Phosphorus Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 _. Fertilizer Anplication P 2 5 Percentage Phosphorus in Petioles (1) By Replicate IV. Ave..21.19.22.22.21.18.24.21.21.21 8.29.28.32.32.3.39.41.44.35.4 24.39.4.4.42.4 p1(2).25.26.24.3.26 25.2.21.23.33.24 25 8.21.24.32.35.28 25 16.22.31.4.35.32 25 24.22.38.27.33.3 25 16 p1(2).17.27.3.29.26.31.23.35..42.33 25 16.27.42.4.44.38 25 16 (3).24.27.37.37.31 35 16.31.41.29.38.35 8.4.27.36.32.34 25 8 1.26.26.35.35.31 i --.29.42.41.37 I (1) tan late bud or early bloom (2) Plowed down (3) Received 3#/A Zn SO4 - remainder of treatments no Zinc

Appendix Table No. 18 The Effect of Several Fertilizer Treatments on the Percentage Potassium Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Application N P25 K - -, 1 8 24 pl(2) 25 25 8 25 16 25 24 25 16 pl(2) 25 16 1 25 16 (3) 35 16 8 25 8 I Percentage Potassium in By Replicate I II 4, III Petioles IV (1) -- Ave,. 1.2 11.6 11.4 11.4 11.2 1.9 12.1 11.4 11.6 11.5 11.8 11.6 11.6 12. 11.8 12.1 11.6 11.1 11.1 11.5 11.6 11.9 11.4 11.5 11.6 11.4 11.9 1.8 11.6 11.a 11.6 11.4 1.8 11.3 11.3 11.6 12. 11.6 11.3 11.6 11.4 1.6 11.4 11.5 11.2 11.8 1.9 1.2 1.6 1.9 12. 11.1 11.4 11.5 11.5 11.8 11.1 1.8 1.5 11.1 11.6 9.9 1.2 1.6 1.6 12.4 11.4 11.4 11.4 11.7 12.2 1.8 1.2, 11.9 11.3 12. 11.9 11.1 11.3 11.6 12.6 11.4 11.6 11.4 11.8 1.2 i 11.8 i 11.2 11.1 1 (1)Sample taken late bud or early bloom (2)Plowed down (3) Received 3#/A Zn SO r. - remainder of treatments no Zinc

69 Appendix Table No. 19 The Effect of Several Fertilizer Treatments on the Percentage Calcium Content of the Petioles (1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Application P 2 5 p Percentage Calcium in Petioles By Replicate IV (1) Ave..82 1.18.98 1.7 1.1.95 1.24 1.1.8 1.2 8.8 1.12.85 1.4.95.93.98.85.98 24.95 1.4.95.95.97 pl(2) 1.4 1.18.85.85.98 25 1.6.87 1.1 1.4 1. 25 8 1.12 1.27 1.9.98 1.12 25 16 1.48 1.21.75 1.1 1.11 25 24 1.48 1.18 1.12.95 1.18. 25 16 p1(2) I 1.43 1.6.9.9 1.9 1.6 1.42.93.95 1.9 25 16 1.18 1.12...; -.9 1.4 25 16 (31 1.27 1.1.98 1.1 1.8 35 16.95 1.6 1.15 1.1 1.4 8.93 1.18.8.82.93 25 8 1.18 1.4.95.8.99 1.12.9.93 1.98 (1) Sample taken late bud or early bloom (2) Plowed down (3) Received 3#/A Zn SO 4 - remainder of treatments no Zinc

7 Appendix Table No. 2 The Effect of Several Fertilizer Treatments on the Percentage Magnesium Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Application I Percentage Magnesium in Petioles ( ) By Replicate P 2 5 1IV Ave. 8 24.55.55.53.5.57.57.61.52.5.65.56.58.57.54.55.56.45.47.49.45.5.49.58.6.6 pl(2) 25 25 8 25 16 25 24.5.58.55.61.52.51.58.58.53.74.62.53.58.62.59.57.45 '.52.52 '.62.56.59.55.53.6.52 25 16 pl(2).68.63.5.58.44.54.58.53'.52 25 16.5.68.54 j.69.6 25 16 (3).6.56.69.53.6 35 16.55.71.62 1.57.61 8 25 8 L_.52.64.45.5.69.54.58.52.58.58.58.62.5.6 (1) Sample taken late bud or early bloom (2) Plowed down (3) Received 3#/A Zn SO4 - remainder of Treatments no Zinc

71 Appendix Table No. 21 The Effect of Several Fertilizer Treatments on the P.P.M. Zinc Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 Fertilizer Applicarion Zinc in Petiole (1) Replicate III N P2O5 K I IV P..H. By 28 22 26 32 8 22 26 2 32 24 16 14 p1(2) 2 4 25 26 52 25 8 14 3 25 16 18 18 25 24 2 22! 25 16 pl(2) 2 18 76 22 25 16 2 22 25 1 16 (3) 26 54 35 i 16 6 36 8 5 4 25 8 42 3 26-26 3 27 22 46 32 32 26 27 24 24 25 2 26 19 3 32 31 3 3 35 26 28 25 26 26 22 14 26 21 26 32 24 18 28 36 22 52 29 76 4 49 16 24 34 2 36 37 26 42 35 16 22 21 (1)Sample taken late bud or early bloom (2) Plowed down (3) Received 3#/A Zn SO4 -remainder of treatments no Zinc

72 Appendix Table No. 22 The Effect of Several Fertilizer Treatments on the P.P.M. Manganese Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 'Fertilizer Applicaticy, N P25 I P.P.M. Manganese in By Replicate II III Petiole IV (1) Ave. 8 24 pl(2) 25 25 8 25 16 25 24 25 16 pl(2) 25 16 25 16 (3) 35 16 8 25 8 32 56 36 48 43 4 72 32 58 51 48 42 8 44 54 5 54 48 58 53 46 5 46 52 49 46 58 5 8 59. 46 58 46 54 51 42 72 46 42 51 4 44 54 52 48 42 46 42 42 43 46 44 42 7 51 66 44 42 56 52 3Z- 52 48 48 5 5 46 5 62 56 54 42 46 42 42 43 5 76 46 68 6 54 46 34 56 48 46 46 52 48 (1) Sample taken late bud or early bloom (2) Plowed down (3) Received 3#/A Zn SO4 - remainder of treatments no Zinc

73 Appendix Table No. 23 The Effect of Several Fertilizer Treatments on the P.P.M. Iron Content of the Petioles(1) of Russet Burbank Potatoes Madras Location - Central Oregon Experiment Station - 1967 j Fertilizer Application P.P.M. Iron in Petiole (1) By Replicate N 2 5 I II III IV Ave. 134 138 16 152 146! 134 156 14 148 145 8 126 122 142 126 129 118 134 126 168 137 24 126 168 134 168 149 25 118 164 134 152 142 25 8 1 11 122 126 176 134 25 16 14 142 114 142 135 214, 122 16 152 162 25 16 13 126 1 114 19 11 35 16 194 136 134 154 4 (1) Sample taken late bud or early bloom

Appendix Table No. 24 The Specific Gravity of Twenty-four Varieties or Lines of Potatoes Grown on The Redmond Location of the Central Oregon Experiment Station - 1967 The Table Presents Data by Replicate Pverage, Indicates Multiple Range Significance of the Entries '----V-a-H e.--ey - --T--- c, necifi c Gravity or Line ----"-- I II I y III Replicate IV ; I, B2759-5 t 1.92 1.79 1.81 1.82 Snowflake 1.81 1.81 1.84 1.74 Sebago ' 1.77 1.83 1.72 1.84 8382-14 1.73 1.76. 1.74 1.72 Kennebec 1.7 1.82 1.75 1.7 irusset Rural 1.69 1.72 1.74 1.78 Russet Burbank 1.71 1.72 1.75 1.7 Penobscott 1.62 1.74 1.67 1.7 B4987-14 1.84 1.71 1.62 1.68 Alaskan Russet 1.6 1.7 1.72 1.65 Haag 1.65 1.68 1.77 1.65 B583-1 1.7 1.72 1.7 1.71 184814-2 1.68 1.69 1.64 1.67 ikatandin 1.68 1.65 1,65 1.65 Red Lasoda 1.67 1.68 1.64 1.63 Monona 1.65 1.74 1.6 1.64 54987-3 1.62 1.66 1.64 1.62 Red Pontiac 1.64 1.56 1.75 1.63 8558-1 1.64 1.64 1.62 1.65 INorgold 1.62 1,66 1.63 1.62 ' Shoshon 1.63 1.62 1.61 1.62 "i 4784-1 1.61 1.59 1.57 1.6 La Rouge 1.62 1.56 1.57 1.63 B5144-2 1.61 1.57 1.59 1.53 --- -- ii --- 1 (i)1--u-16e- ' - Range --"- ' Ave. Significance 5% : ' 1.8 1.23 1-1.92 1.82 1.75 1.78 1.77 1.74 1.64 1.72 1.68 1.72 J I 1.68 1.71 1.74 1.69 i ; 1.61 1.69 1.68 1.69 1 1.68 1.64 1.66 1.69 1.61 1.64 1.59 1.56 1.59 1.63 1.57 1.65 1.62 1.52 1.69 1.69 1.67 1.66 1.65 1.65 1,63 1.63 1.63 1.63 1.61 1.6 1.6 1.56. T

Appendix Table No. 25 The Specific Gravity of Twenty-four Varieties or Lines of Potatoes Grown on The Madras Location of the Central Oregon Experiment Station - 1967 The Table Presents Data by Replicate & Average, & Indicates Multiple Range Significance of the Entries by Variety Specific Gravity Replicate 11) Multiple Range' I, III! 1 IV V Ave. Significance 5% Sebago 82759-5 8382-14 Russet Burbank Penobscott Snowflake Haag 1.78 : 1.83 Katadhin 1.78 : 1.87 Kennebec 1.81 1.81 8583-1 1.74 1.78 Russet Rural 1.77 1.82 Shoshoni 1.96 1.78 Red Lasoda 1.82 1.8 Alaskan Russet 1.741 1.76 La Rouge 1.75 1 1.7 84814-2 1.75 ' 1.75 84987-14 1.71 1.35 84987-3 1.71 1.74(2) 85144-2 1.68 1.73 853-1 1.73 1.79 :Monona 1.76 1.69 184784-1 1.59 1 1.7 Red Pontiac 1.66 1.72 INorgold 1.62 I 1.63. 1.95 1.94 1.9 1.9 1.15 I 1.75 1.9 1.95 1.96 1.95 1.r6 1 1.84 1.94 1.92 1.95 1.82 1.89 1.83 1.85 1.83 1.88 1.85 1.85 1.81 i 1.88 1.78 1.31 1.36 1.83 1.71 i 1.86 1.28 1.8 1.85 1.82I 1.81 1.81 1.87 1.82 i 1.78 1.82 1.79 1.81 1.81 1.82 1.78 1.31 1.84 1.83 1.84 1.81 1.73 1.79 1.88 1.8 1.65 1.74 1.78 1.78 1.79 1.74 1.72 1.77 1.75 1.76 1.78 1 1.79 1.72 1.8 1.75 1.69 1.76 1.76 1.74 1.7 1.65 1.73 1.73 1.77 1.76 1.64 1.72 1.74 1.78 1.69 1.72 1.6 1.73 1.74 1.72 1.73 1.69 1.64 1.7 1.68 1.72 1.73 1.68 1.69 1.65 1.61 1.67 1.54 1.76 1.7 1.65 (1) Original calculations carried out to one more significant digit (2)Corrected value