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Table I. Mean effect of Alar rates on yield and quality of carrots,
applied 50 days from seeding (Exp. 582).
 Roots
 Total Dia- Inside
Alar Total U.S. No. 1 U.S. Jumbo Marketable Length meter color Cull
ppm Lbs. Lbs. No. Lbs. No. Lbs. Tons/A (in) (in) 1/ Lbs.
 0 53.9 32.3 2.5 5 34.8 20.2 6.6 1.1 4 18.5
1000 57.5 35.7 2.9 5 38.6 22.4 '6.8 1.2 4 18.2
2000 56.1 34.1 4.1 7 38.2 22.2 6.5 1.2 4 17.1
4000 59.4 36.8 3.7 6 40.5 23.5 6.5 1.2 4 18.8
Significance at 5%
1/ 1 = poor to 5 = excellent.

Exp. 582a and 582b.

Objective: It is known that the effect of Alar is dependent on the stage of
growth at which it is applied. Therefore, the objective of these tests
was to find the effect of rates of Alar when applied at two stages of
growth of the carrots.

Exp. 582a

Location: Duda Farm, Belle Glade, Florida.

Soil type: Peaty muck six years under cultivation

Soil test after fertilization: pH = 7.00; P = 23 and K = 199 Ibs/A.

Design: Latin squares 4 x 4.

Herbicide: Lorox and mineral spirits.

Seeding date: November 15, 1968.

Alar treatment date: January 7, 1969.

Spray rate: Drip point

Stage at Alar treatment: Size of tops 8" 9". Size of roots slightly
less than 1/4 inch.in diameter. Eight leaves per plant at time of
application.

Weather: 67 degree F; clear; soil moisture good.

Treatment Alar ppm: 1 = 0, 2 = 1000, 3 = 2000, 4 = 4000.

Harvest date: March 12, 1969.

Harvest Plot: 10' x 45" = 37.5 sq. ft.

Exp. 582b

Location: Duda Farm, Belle Glade, Florida.