Open AccessEffects of Irrigation and Nitrogen Levels on the Yields of Guinea Grass, Para Grass, and Guinea Grass-Kudzu and Para Grass-Kudzu Mixtures in Lajas Valley
Author(s) -
Roberto A. Vázquez
Publication year - 1965
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v49i4.13040
Subject(s) - kudzu , irrigation , agronomy , dry matter , nitrogen , moisture , environmental science , biology , chemistry , medicine , alternative medicine , organic chemistry , pathology , traditional chinese medicine
A field experiment was conducted at Lajas Substation in order to study the effects of three irrigation and three nitrogen levels on dry-matter yields of Para grass, Guinea grass, and the mixtures of these grasses with tropical kudzu. Some plots were frequently irrigated when the average soil-moisture suction in the active root-zone reached 0.7 atm. and intermediately irrigated when the average soil-moisture suction in the active root-zone reached 2.0 atm. Nonirrigated plots were used as a check. The nitrogen levels tested were 0, 400, and 800 pounds of nitrogen per acre per year.