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Director:
Jake Fisher
P. O. Box 160
Portageville, MO 63873
Phone: 573-379-5431
Fax: 573-379-5875
Email:FisherJ@missouri.edu
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Missouri Cotton News
NOVEMBER 1999
This newsletter is published for the Missouri Cotton Industry.
Editor: Bobby Phipps
State Extension Cotton Specialist
Avoiding High Micronaire Cotton
Dr. Bobby Phipps
High micronaire and short fiber length is a major problem in the 1999
cotton crop. Environment is a major factor affecting micronaire.
When the cotton plant flowers, the fibers start elongating in those
particular bolls and continue to elongate for the next 15 to 21 days.
Water is required to cause the proper fiber elongation. If it is dry
anytime during this period the fiber the fiber length will be reduced.
After this period the fiber wall is thickened using sugars produced by
the plant. With a shorter fiber due to water stress, any sugars
produced by the plant will overfill theshortened fiber cavity and this
results in a large diameter fiber, which is by definition a high
micronaire fiber.
Proper irrigation or rainfall during fiber elongation will allow the
fiber to have the proper length and help prevent the fiber from having
a high micronaire. Also using the Hal Lewis method of timing
defoliation will reduce the chance of having a high micronaire. This
method uses the micronaire of the bottom four first position bolls to
determine the date to defoliate thereby stopping the filling of the
fibers in the uppermost bolls. this will aid in controlling
micronaire by producing a better average micronaire.
If one has 1000 acres of cotton producing 1500 bales and 500 had a
high mic the mic discount was, for instance, five cents per pound the
loss would be 12,500 dollars. The Delta Center will conduct the Hal
Lewis test for ten dollars per sample. On ten fields of one hundred
acres each this would be 100 dollars. It would take one person one or
two days to take the samples. The net profit would be over 12,000
dollars. This is nice pay for two days work.
1999 Missouri Cotton Variety Trials
by Bobby Phipps
The crop started off very good at the Sikeston and Clarkton trials.
The gumbo trial at Portageville started off unusually well. The
Sikeston trial was outstanding. The Portageville silt loam and Senath
trials had emergence and seedling disease problems and were replanted
on May 27 and May 28 respectively. The Clarkton trial was planted on
May 10 and the Portageville gumbo trial was planted on May 12. The
period from late June to mid September was extremely dry and all test
locations were irrigated.
A special thanks to our cooperators, Scott Andrews, Chuck Provance,
and Johnny Hux.
Sandy Soil Clay CVT
Clarkton Portageville
9902 9907
---------- -------------
Variety Lbs/acre Variety Lbs/acre
DP 425 RR 884 SG 747 835
PSC 952 880 SS 9901 721
DP 429 RR 781 HCR 9257 716
DP 388 760 PMX 0425 710
PM 1440 749 PM 1220 RR 707
TR 366 744 TX 224 681
FM 989 725 DP 436 RR 680
SG 125 B/R 716 HCR 9228 674
DP 436 RR 714 AR 8712 666
PSC 636 710 SG 105 663
AR 8712 694 DP 20 B 658
PSC 355 688 HCR 7114 655
PM 1560 BG 673 PM 1560 BG 655
TX 224 669 PSC 952 655
SG 501 B/R 666 PM 1440 647
SG 125 655 SG 125 RR 644
TR 292 655 SG 501 B/R 644
DP 5111 644 PSC 355 638
SS 9801 638 SS 9806 633
PM 1330 BG 633 HCR 7061-39 630
STV X 9903 602 HCR 9240 627
HCR 9220 599 AP 7115 627
SS 9806 588 STV X 9901 625
HCR 7114-46 585 DP 409 B/R 619
DP 428 B 577 SG 501 616
PM 1220 RR 577 PSC 636 605
STV 47 BXN 577 PM 1330 BG 602
PSC 556 574 PM 1220 B/R 596
PM 1560 B/R 562 PM 1218 B/R 588
SG 747 552 HCR 9310 585
PM 1218 B/R 551 STV 474 583
PMX 0425 549 AP 6101 583
HCR 7114 544 HCR 7126 580
HCR 7126 544 SS 9801 577
STV X 9902 544 HCR 9220 577
HCR 9257 541 PSC 569 577
DP 451 B/R 536 SG 125 577
HCR 9228 536 DP 422 B/R 572
STV X 9901 527 DG 201 570
HCR 7061-39 525 DP 428 B 566
PM 1220 B/R 522 DP 388 563
SS 9901 522 DP 451 B/R 559
DG 201 508 DP 429 RR 549
DP 20 B 483 HCR 7114-46 547
PSC 569 481 FM 819 540
STV 474 480 FM 989 525
FM 819 472 STV X 9902 524
DP 409 B/R 470 SG 125 B/R 522
DP 422 B/R 466 PM 1560 B/R 511
HCR 9310 461 PSC 556 511
AP 6101 455 DP 425 RR 492
SG 125 RR 455 STV X 9903 486
SG 501 438 TR 292 486
SG 105 422 STV 47 BXN 480
HCR 9240 414 TR 366 474
AP 7115 374 DP 5111 455
Portageville Silt Loam
CVT Silt Loam Sikeston
9904 9903
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Variety lbs/acre Variety Lbs/acre
PM 1218 B/R 905 PM 1218 B/R 902
PM 1440 888 SG 747 821
DP 388 871 PM 1220 B/R 819
PSC 355 866 PSC 952 816
SG 125 849 SG 105 777
STV X 9901 835 PM 1440 774
HCR 9220 832 PM 1560 BG 766
SG 125 B/R 832 SG 125 757
AP 7115 827 DP 20 B 755
HCR 7114-46 824 SG 125 RR 744
HCR 9240 813 AR 8712 741
DP 5111 807 AP 7115 738
DP 409 B/R 805 DP 422 B/R 730
SG 105 805 PMX 0425 730
DP 425 RR 802 PM 1220 RR 727
SG 747 799 SS 9801 720
PSC 952 794 HCR 9220 716
DG 201 794 HCR 9257 716
HCR 9310 784 SS 9806 713
FM 819 780 HCR 7114 711
PMX 0425 777 HCR 7061-39 699
STV 47 BXN 774 PSC 355 699
SG 501 769 STV X 9903 696
HCR 7114 755 DP 425 RR 694
HCR 9257 755 DP 451 B/R 694
STV 474 752 SG 501 B/R 683
SG 501 B/R 746 DP 5111 677
PSC 636 741 DP 388 674
PM 1220 B/R 738 SG 125 B/R 663
AP 6101 738 STV 474 663
STV X 9903 735 STV X 9902 663
DP 422 B/R 733 SG 501 660
TR 292 727 DP 409 B/R 658
DP 428 B 724 PM 1330 BG 652
SS 9801 719 DP 428 B 649
PSC 556 719 PSC 636 647
FM 989 713 DP 429 RR 644
STV X 9902 713 HCR 7114-46 644
HCR 7061-39 708 HCR 9228 631
PM 1560 B/R 708 HCR 7126 630
DP 429 RR 702 STV X 9901 630
SS 9806 699 TX 224 630
DP 20 B 699 PSC 556 624
PM 1560 BG 688 DP 436 RR 622
PM 1330 BG 685 FM 819 622
PSC 569 677 HCR 9240 622
PM 1220 RR 669 STV 47 BXN 619
SS 9901 666 PSC 569 613
DP 451 B/R 663 DG 201 611
HCR 9228 660 PM 1560 B/R 611
AR 8712 660 TR 366 585
DP 436 RR 655 TR 292 572
TX 224 647 AP 6101 558
SG 125 RR 647 HCR 9310 538
HCR 7126 635 SS 9901 535
TR 366 633 FM 989 494
Senath
Silt Loam
9901
---------
Variety lbs/acre
HCR 7061-39 724
SG 501 724
PMX 0425 724
PM 1218 B/R 721
SG 105 716
PM 1220 B/R 691
SS 9806 685
SG 125 677
AR 8712 669
STV 474 655
PSC 636 649
DP 436 RR 647
SG 501 B/R 647
HCR 9220 638
HCR 7114-46 636
PSC 355 608
AP 7115 608
TX 224 594
DP 422 B/R 591
DP 388 588
SS 9901 585
PM 1220 RR 585
STV X 9901 574
SG 747 572
SG 125 RR 569
DP 428 B 569
PM 1560 BG 566
HCR 9228 558
SS 9801 552
PM 1440 549
DP 5111 549
HCR 9240 547
FM 989 547
DP 20 B 544
PSC 556 544
SG 125 B/R 544
PSC 569 541
HCR 9257 539
PSC 952 538
HCR 9310 533
TR 292 530
STV X 9902 523
HCR 7114 522
DP 425 RR 522
FM 819 513
DP 429 RR 508
STV 47 BXN 502
DP 409 B/R 499
AP 6101 499
STV X 9903 499
PM 1330 BG 483
DP 451 B/R 480
DG 201 474
PM 1560 B/R 466
HCR 7126 394
TR 366 380
University Outreach & Extension does not discriminate on the basis of
race, color, national origin, sex, religion, age, disability or status
as a Vietnam-era veteran in employment or programs.
PRECAUTIONARY STATEMENT
In order to protect people and the environment, pesticides
should be used safely. This is everyone’s responsibility,
especially the users of pesticides. Read and follow label
directions carefully before you buy, mix, apply, store, or
dispose of a pesticide. According to the laws regulating
pesticides, they must be used only as directed by the label.
DISCLAIMER STATEMENT
The University of Missouri does not warrant products mentioned
in this publication. The use of a trade name does not
constitute recommendation of one product over other (generic)
products of a similar chemistry.
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