Field Trial - Ground Nuts (Kwarts), Hartsvallei, Vaalharts area, South Africa

Date/Datum December 1999 - June 1999
Product/Produk Yield-Plus
Crop/Oes Type/Tipe Ground Nuts
Variety/Varieteit Kwarts
Locale/Plek Hartsvallei, Vaalharts area, R.S.A.
Rainfall/
Reenval
Winter/
Winter
  Summer/
Somer
Ave. mm pa/
Gem. mm pj
 
Soil quality/
Grond gehalte
Excellent/
Uitstekend
  Good/
Goed
Medium/
Gemiddeld
  Poor/
Arm
 
Normal weather conditions/
Gewone weerstoestande
Warm summer, cold winters
Low rainfall
Test period weather conditions other than normal/
Toets periode weersomstandighede buitengewoon
Abnormally hot with below average rainfall. Crop planted 2 months later than normal for area.
Cooperator/Samewerker Mr J Engelbrecht
Type of trial/Proeftipe Commercial field under irrigation (pivot)
Experimental design/
Proefnemings ontwerp
8ha treated
12 ha control
Treatments/Behandelinge 1. 200ml/ha : 19 January 1999 (beginning of flowering)
2. 300ml/ha : 14 February 1999
3. 400ml/ha : 22 February 1999
Applications/
Toedienings
Qty/Hoeveelheid Three
Form/Vorm Tractor spray
Counts/Tellings Total yield per ha
Total grading
Results/Uitslae
  Yield
Treated 3.375 t/ha
Control 2.75 t/ha
Increase 22.7%
  Grading
 

Content

Choice grade

Treated

80%

85%

Norm for area

73%

75%

Conclusion/Gevolgtrekking Improved yield in treated area.
Although accurate measurement of the grading was not done, the total grading was better than the norm for the area.
Special comments/
Spesiale opmerkings
No treatment against rust was given, but when rust affected the total crop, the effect on the Yield Plus treated area was minimal compared to the untreated area.
Frost damage at a later stage showed a similar trend.
Notes/Notas  

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