![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
Abstract
The effects of spring-applied nitrogen were measured in 2 years on an irrigated pasture, with and without added potassium. The rates of N were approximately 0, 16, 32, and 65 lb per acre per annum in single dressings and 97 lb (reduced to 65 lb in the second year) split in 6 dressings.
Nitrogen caused a rapid stimulation in grass growth.
Clover growth was less on plots treated with nitrogen. The clover suppression outlasted the response in the grasses and caused a small depression in total summer production. The effects increased with increasing rates of N.
Nitrogen levels in the grasses were increased by applied nitrogen during spring but reduced during part of the summer. Nitrogen levels in the clovers were not affected by applications of nitrogen.
Potassium gave only a small response in the spring production of grasses.