Soil Analytical Services in Support of Agricultural

Production

Why have your soil tested?

Saves $$$ & gives you optimum returns from investment, through improved soil

fertility input management.

Improves the responses of your crops to added fertilizers through proper liming

recommendations to improve soil ‘ sweetness’.

Points out if there are problems of nutritional imbalances that are corrected through

appropriate fertilizer recommendations.

You can determine the needs of your soil well before a crop is planted. Management

by symptoms greatly compromises your yield.

------Some of the basic soil testing stages & principles------

Chemistry & Soil Research Institute

Department of Research and Specialist Services

P.O Box CY550 Causeway, Harare

FERTILIZER RECOMMENDATIONS(PLEASE SEE ENCLOSED PAMPHLET FOR INTERPRETATION OF SOIL ANALYSIS)

REQUIRED NUTRIENTS SUGGESTED FERTILIZERS

LAB.NO.YOUR

REF.CROP N P K FERTILIZERS

RATES

KG/HAAPPLIC.

LIME KG/HA

(NOTES)

33/SJ BLCK1 MAIZE 140-160 35- 45 20- 30D (8:14:7)

AN (34:0:0)

300

350- 400

IA

TD0

34/SJ BLCK2 MAIZE 160-180 45- 55 20- 30D (8:14:7)

AN (34:0:0)

350

375- 425

IA

TD1000 (SEE (1))

LIMING NOTES(1)

THE LIME RECOMMENDED SHOULD BE BROADCAST AND DISCED IN DEEPLY AFTERPLOUGHING BEFORE PLANTING THIS SEASON. IT IS

ADVISABLE TO CHECK THE PH AFTER TWO CROPS HAVE BEEN REMOVED.

FERTILIZER KEY APPLICATION KEY

N/S...NITRATE OF SODA V,D ETC...COMPOUND V,D ETC. P....AT PLOUGHING

S/A...SULPHATE OF AMMONIA M/P.......MURIATE OF POTASH IA...INITIAL APPLICATION

AN....AMMONIUM NITRATE S/P.......SULPHATE OF POTASH TD...TOP DRESSING

SSP...SINGLE SUPERPHOSPHATE F/B.......FERTILIZER BORATE BR...BROADCAST BEFORE RIDGING

DSP...DOUBLE SUPERPHOSPHATE

CHEMISTRY AND SOIL RESEARCH INSTITUTE

DEPARTMENT OF RESEARCH & SPECIALIST SERVICES

NAME: MAWIDZI, G. FARM NAME: MAWIDZI REF.NO. :CT/1/1/27270

ADDRESS: P.O BOX 598 CHEGUTU ICA OR LOCALITY: CHEGUTU RECEIPT NO.: 90381-840

SOIL ANALYSIS REPORT

LAB.NO.YOUR

REF.COL. TEX.

MECH

ANAL%PH

CONDU-

CTIVITY

MIN N PPM AVAIL

P2O5

PPM

EXCHANGEABLE

CATIONS ME./100G

CLAY SILT INITAFTER

INCK CA MG NA TOT

33/SJ

34/SJ

BLCK1

BLCK2

B

B

MG/SC

MG/SL

5.6

4.3

12

12

27

25

27

14

0.23

0.25

3.35

2.13

1.51

0.88

5.1

3.3

NOTES

(1) PH DETERMINED IN 0.01M CALCIUM CHLORIDE

(2) MIN N INIT = INITIAL MINERAL NITROGEN (AMMONIUM PLUS NITRATE)

(3) MIN N A/INC = MINERAL NITROGEN AFTER INCUBATION (AMMONIUM PLUS NITRATE)

(4) AVAIL P2O5 = AVAILABLE PHOSPHORUS BY RESIN EXTRACT

COLOUR KEY TEXTURE KEY CALCIUM CHLORIDE PH

VALUES

R...RED/REDDISH S...STRONG S...SAND/SANDY FG..FINE GRAINED BELOW 4.5...V. S. ACID

B...BROWN/BROWNISH D...DARK L...LOAM/LOAMY MG..MEDIUM-GRAINED 4.5 TO 5.0...STRONGLY ACID

Y...YELLOW/YELLOWISH L...LIGHT C...CLAY CG..COURSE-GRAINED 5.0 TO 5.5...MEDIUM ACID

G...GREY/GREYISH V...VERY HC..HEAVY CLAY 5.5 TO 6.0...SLIGHTLY ACID

BK..BLACK/BLACKISH P...PALE 6.0 TO 6.5...NEUTRAL

6.5 TO 7.0...MILDLY ALKALINE