Effect of Prosopis flexuosa spp. as a nurse plant on nutrient content and productivity of Opuntia ellisiana Griffiths

GRUNWALDT JOSEFINA MARÍA; GRUNWALDT EDUARDO GUILLERMO; GUEVARA JUAN CARLOS; MARTINEZ CARRETERO EDUARDO

REVISTA DE LA FACULTAD DE CIENCIAS AGRARIAS DE LA UNIVERSIDAD NACIONAL DE CUYO

UNIV NACIONAL CUYO

Lugar: Mendoza; Año: 2018 vol. 50 p. 129 - 137

0370-4661

In arid conditions, the low quality of the forage and water shortage could be attenuated by the introduction of Opuntia species. Several plant species grows well under Prosopis canopy, responding to a higher nutrient content in the soil, It was hypothesized that productivity and nutrient content, mainly crude protein (CP), of Opuntia ellisiana planted under Prosopis would be higher than of those planted outside the canopy, and that these parameters would be influenced by the cactus position: north or south from the centre of the tree. Sampling was done in 18 plants under the canopy of Prosopis and 23 outside of it. After one year of the plantation, the totality of cladodes was harvested. The productivityper plantwas 3.1 and 5.7 cladodes and 34.9 and 48.1 g of dry matter (DM), outside and under the canopy, respectively. The bromatological values (%) were moisture: 89.1 and 91.9, organic matter (OM): 76.7 and 79.8, CP: 4.4 and 8.1, acid detergent fiber (ADF):13.7 and 18.2, neutral detergent fiber (NDF): 29.0 and 31.5, K: 3.1 and 3.6, P: 0.07 and 0.11, Ca: 5.5 and 4.4, Na: 0.04 and 0.02, outside and under the canopy, respectively. Crude protein, moisture, OM, ADF, NDF, K, P and productivity per plant were higher under the canopy, whereas Ca and Na values were higher outside the canopy (p