Effects of Time of Ammonium Sulphate Application on the Growth of Newly Transplanted Coconut Seedlings.

Abstract

In a soil known to be deficient in nitrogen and sulphur, the uptake of these elements was studied through applications of ammonium sulphate at different intervals after transplanting. Fertiliser applied at transplanting resulted in increases in sulphur levels within a month of application with uptake reaching its maximum level from fertiliser applied as early as one month after transplanting. Consistent responses, in terms of increases in leaf nitrogen, became evident when fertiliser was applied two months or later after field plantings.