Como es sabido los brasileros llaman Cunha a Clitoria ternatea, esta planta está cobrando una gran importancia para los ganaderos del nordeste de Brasil (zona seca) en la cual se producen especialmente ovejas.
Clitoria ternatea ha demostrado ser una planta muy tolerante a la sequía, pero a su vez responde muy bien a la fertilización y al riego, obteniéndose de ella grandes cantidades de forraje para alimentación de rumiantes.
En esta tesis de Maestría se ha evaluado la fertilización fosfatada en esta planta, confirmando que la fertilización con fósforo se traduce en grandes cantidades de biomasa en las leguminosas.
Ricardo Macedo da Silva
ADUBAÇÃO FOSFATADA NA CULTURA DA CUNHÃ
Dissertação apresentada como requisito parcial para obtenção do título de Mestre
em Ciência Animal, pela Universidade Federal do Vale do São Francisco.
Les dejo el enlace para que lean este trabajo, puede descargar a su disco.
The Butterfly pea (Clitoria ternatea L.), a forage legume with high nutritional
value, has great potential as ruminant feed in northeastern Brazil. In this sense, the
aim of the present study was to evaluate the effect of phosphorus on biomass
production and partitioning, chemical composition, and structural characteristics of
the stem and leaf of Butterfly pea grown under irrigation in the semiarid Northeast.
The experiment was conducted in the annual crop area, located at the experimental
field of the Department of Technology and Social Sciences (DTCS), State University
of Bahia (UNEB) in Juazeiro - BA. We used a completely randomized design with five
phosphorus levels (zero, 100, 200, 300 and 400 kg/ha P2O5) and four repetitions,
totaling 20 plots. The plot size was 4x4 m, with nine m2 of useful area, the remaining
part being border. We used 40-cm spacing between rows and 10-cm between plants,
totaling a stand of 400 plants per plot. The furrow irrigation was carried out every
three days, while the treatments were applied after the plants had recovered from
transplanting (issuing a new leaf). Every two months after the experiment was set up,
10 plants were taken from the useful area, evaluating the dry matter production of
shoots (MS_PA) and the division into stem (MS_C) and leaf (MS_F), as well as the
relation F/C. Structural parameters were also evaluated in relation to branch diameter
and length (RP and RS), number of secondary branches, flowers, buds, and pods;
and in relation to the leaves: size of leaf and leaflet, number of leaflets/leaf,
expanded leaves, expanding leaves and total leaves. Furthermore, the
bromatological characteristics of crude protein, ash, neutral detergent fiber, acid
detergent fiber and hemicelluloses of stem+pod, leaf and shoot. The used doses of
phosphorus resulted in significant increase in dry matter production of the Butterfly
pea and in the structural characteristics of the stem (branch diameter, number of
branches, number of pods); while they did not influence the structural characteristics
of the leaf of the Butterfly pea. As to bromatology, there was a linear decrease for
NDF of stem+pod and leaf and a linear increase for NDF and ADF of the shoot, for
crude protein (PB) and for the hemicelluloses of the leaf.
Keywords: Clitoria ternatea L.; diameter; dry matter; legume; phosphorus