Despite its abundance in the soil, iron often exists in insoluble forms, particularly in calcareous soils, making it ...

Madder, to afford a beautiful and permanent tint, must be raised in a soil containing a large portion of calcareous earth, the more the better. The Dutch madder does not afford so beautiful a ...

THE solubility of and chemical changes undergone by phosphates added to calcareous soils still present many unsolved problems, in spite of extensive research in this field. The influence of large ...

2005). With the exception of C, H, and O, which plants obtain from air and water, plants derive the remaining 14 elements from the soil or through fertilizers, manures, and amendments (Parikh ...