CNM RECOMMENDATION CODES

 

 

1.                   No recommendation

 

2.                   Analyses suggest fruit loss.  Check for cause.

 

3.                   Please enter date of 1st bloom on the petiole information form as soon as 1st bloom occurs.  This date is a key factor that affects your recommendation.

 

4.                   Analysis indicates N deficiency.  Apply 20 lbs of N per acre to the soil.  Also, if soil moisture is not adequate, apply 7 to 9 lbs of foliar N in 5 to 10 gals total volume per acre as follows.  If applying with insecticide, add insecticide to water first, then add fertilizer, and continuously agitate mixture.  Refer to pesticide label and consult manufacturer’s technical representative for fertilizer and insecticide compatibility information.

 

a.       7 lbs = 15 lbs of 46% N solid urea or 3.2 gals 23% N liquid urea

b.       9 lbs = 19.5 lbs of 46% N solid urea or 4 gals 23% N liquid urea

 

Under prolonged drouthy conditions, apply no more than three consecutive weekly foliar applications of N.  Do not apply foliar N if leaves wilt by noon.  Foliar applications perform best if made during the cooler part of the morning or evening.

 

5.                   Analysis indicates N deficiency.  Apply 7 to 9 lbs of foliar N in 5 to 10 gals total volume per acre as follows.  If applying with insecticide, add insecticide to water first, then add fertilizer, and continuously agitate mixture.  Refer to pesticide label and consult manufacturer’s technical representative for fertilizer and insecticide compatibility information.

 

a.       7 lbs = 15 lbs of 46% N solid urea or 3.2 gals 23% N liquid urea

b.       9 lbs = 19.5 lbs of 46% N solid urea or 4 gals 23% N liquid urea

 

Under prolonged drouthy conditions, apply no more than three consecutive weekly foliar applications of N.  Do no apply foliar N if leaves wilt by noon.  Foliar applications perform best if made during the cooler part of the morning or evening.

 

6.                   Apply 0.2 lbs of actual boron in 2 to 5 gals of solution per acre as soon as convenient to do so.  If applying with insecticide, add insecticide to water first, and continuously agitate mixture.  Refer to pesticide label and consult manufacturer’s technical representative for fertilizer and insecticide compatibility information.

 

7.                   If N was not applied to the soil as recommended on your last report, apply it now, plus 7 to 9 lbs of N as urea to the foliage (see Recommendation 5).  If soil N was applied as recommended on your last printout, apply foliar N only.

 

8.                   On the next information card, please enter the pounds of N per acre applied on this field to date this year.  This affects early season N recommendations.

 

9.                   The fruiting rate affects N, K, and B recommendations.  Use fruiting rates table provided on back of sample information card.

 

10.               Analysis indicates P is low.  Unless as much as 40 lbs of P2O5 per acre was applied preplant or later, sidedress a liquid N-P fertilizer containing 5-15 pounds of N and up to 50 pounds P2O5 per acre.

 

11.               N is low but not strongly deficient.  The next sample period is very important.

 

12.               Analysis indicates N deficiency.  If climate and fruiting conditions are good or excellent, consider 7 to 9 lbs of foliar N in at least 5 gals total volume per acre.  If applying with insecticide, add insecticide to water first, then add fertilizer, and continuously agitate mixture.  Refer to pesticide label and consult manufacturer’s technical representative for fertilizer and insecticide compatibility information.

 

a.       7 lbs = 15 lbs of 46% N solid urea or 3.2 gals 23% N liquid urea

b.       9 lbs = 19.5 lbs of 46% N solid urea or 4 gals 23% N liquid urea

 

Under prolonged drouthy conditions, apply no more than three consecutive weekly foliar applications of N.  Do not apply foliar N if leaves wilt by noon.  Foliar applications perform best if made during the cooler part of the morning or evening.

 

13.               Analysis indicates N deficiency.  Apply 30 lbs of N per acre to the soil and water in promptly unless N has been soil applied in the last week.

 

14.               K tests near the deficiency level.  Be prepared to apply potash depending on future tests.  Check to be sure that soil moisture is not limiting soil potassium uptake.

 

15.               If yield potential is at least 1 ˝ bales per acre, apply 60 lbs K2O per acre to the soil unless potash recommended in a previous period was applied.  If soil moisture is suspected to limit potassium uptake, consider foliar potassium as in Recommendation 18.

 

16.               Analysis indicate water deficiency.

 

17.               Analysis indicates possible sulfur deficiency.  Watch for yellowing deficiency symptoms in top leaves.  See Extension fact sheet 2058.

 

18.               Possible K deficiency.  Consider application of 4 to 6 lbs of K2O in 5 gals of total volume per acre each week for 3 weeks, using the following or equivalent:  a.  3.6 gals/A of 3-0-11  b.  4 gals/A of 10-0-10  c.  5 gals/A of 16-0-8.  for cold-mixed solutions use 4 to 6 lbs K2O in 10 gals of total volume per acre.  If applying with insecticide, add insecticide to water first, then add fertilizer, and continuously agitate mixture.  Refer to pesticide label and consult manufacturer’s technical representative for fertilizer and insecticide compatibility information.

 

19.               N is very low.  Collect another sample immediately.

 

NOTE:  The relationship between petiole nutrient levels and yield gets weaker as the season progresses.  Predicting the response to foliar nutrient addition, especially after the fourth week of blooming, is difficult and will vary according to boll load, insect control, soil moisture, weather, and time remaining in the season.

 

 

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