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Table 1 Soil characteristics of the experimental site at 0–50 cm depth, Miti, eastern DRC

From: Di-ammonium phosphate (DAP) and plant density improve grain yield, nodulation capacity, and profitability of peas (Pisum sativum L.) on ferralsols in eastern D.R. Congo

Years

pHw

pHKCl

C(%)

OM (%)

N (%)

Cmol kg−1

CEC

P (mg kg−1)

Texture

K

Mg

Ca

S%

L%

C%

2018

5.38

4.72

1.26

2.16

0.28

0.13

4.45

9.36

20.5

6.4

16

12

72

2017

5.21

4.31

0.96

1.95

0.18

0.48

4.85

6.8

21.9

7.1

18

12

70

  1. CEC with NH4OAc
  2. pH7 phosphorous analyzed by Olsen method, pH at 1:5, OM organic matter, CEC cation exchange capacity, S, L and C refer to sand, loam and clay, respectively