Table 9 Element contents N, P, and K (%) in the yielded seeds of quinoa plants treated with proline or trehalose with (+) and without (−) compost amendment under salinity stress (average of two seasons)

2.26

2.34

0.220

0.251

0.318

0.376

0.5

2.32

2.42

0.231

0.258

0.332

0.371

1.0

2.45

2.53

0.240

0.265

0.354

0.382

Trehalose

2.5

2.36

2.68

0.272

0.278

0.374

0.379

5.0

2.79

2.86

0.353

0.383

0.388

0.401

2.28

2.42

0.238

0.261

0.319

0.383

0.5

2.33

2.49

0.245

0.273

0.332

0.397

1.0

2.51

2.55

0.266

0.285

0.345

0.403

Trehalose

2.5

2.35

2.63

0.302

0.322

0.349

0.332

5.0

2.54

2.65

0.265

0.280

0.322

0.389

2.09

2.27

0.229

0.242

0.306

0.314

Proline

0.5

2.14

2.32

0.256

0.274

0.364

0.386

1.0

2.01

2.38

0.274

0.287

0.392

0.406

Trehalose

2.5

2.47

3.16

0.299

0.302

0.403

0.414

5.0

3.27

3.75

0.341

0.385

0.402

0.421