This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

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The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers. / Verticillium wilt tolerance and varietal response were factors in lint yield in this test. Highest yields were obtained from the first planting on 8 April. The 19 April planting had a lower average yield than the 7 May planting, probably because of poorer stands. Lint yields decreased an average of 5 pounds of lint/acre/day between 8 April and 7 May; 9 pounds between 7 May and 24 May; and 15 pounds between 24 May and 10 June. Deltapine (DP) 90 had the highest lint yield for the first two plantings and was among the highest for all plantings. DP 30 was highest in lint yield for the third and fourth plantings and high at other planting dates. Wilt tolerance was a factor in DP 30 performance. If the price premium for pima lint is considered, P-62 was superior to all upland cottons for the first four plantings and Pima S-6 was for the first three plantings. Wilt tolerance was undoubtedly a factor in the pima cotton performance.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers. / Lint yield from planting on 2 April averaged 406 pounds of lint/acre less than from the 23 April planting for the 12 varieties. After 23 April, lint yield decreased an average of 6 pounds of lint/day to 7 May. For the 7 May to 20 May period the daily decrease was 10 pounds/day and from 20 May to 7 June it was 23 pounds/day. Deltapine (DP) 775, DP 90, and DP 90Y had the highest lint yield for the first two plantings and the lowest lint yield for the last planting. Centennial, in contrast, had the lowest yield for the first three planting dates and the highest yield for the last planting date. This illustrates the importance of selecting a variety that is best adapted for the particular planting period.

DPL 41 and Pima S-5 cotton were planted at low, medium, and high planting rates on April 12, April 27, and May 10 on the Safford Experimental Farm in 1983. Heavy rains in late September and early October reduced lint yields. Pima S-5 produced 66% as much lint as DPL 41. Both varieties had the highest lint yield when planted on April 27. The highest planting rate produced the highest yield for DPL 41, while the medium planting rate produced the most lint for Pima S-5 on April 27.

No description available.

No description available.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers. / The earliest planting date (28 March) gave the highest average lint yield. The average decrease in lint yield with delayed planting after 28 March was 6 to 7 pounds of lint/acre/day. Varieties did not differ greatly in lint yield. The early (short season) varieties Centennial and Deltapine 30 were consistently lowest in lint yield. Deltapine 775, Deltapine 90Y, and Stoneville 112 were among the highest producers at all three planting dates.

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.