%0 Journal Article
%T Efecto de la altura y frecuencia de corte sobre tres variedades de man¨ª forrajero (Arachis pintoi) en el estado M¨¦rida: I. Rendimiento y contenido de prote¨ªna cruda
%A Urbano
%A Diannelis
%A D¨¢vila
%A Ciro
%A Castro
%A Fernando
%J Zootecnia Tropical
%D 2010
%I Instituto Nacional de Investigaciones Agr¨ªcolas Venezuela
%X in order to evaluate the effect of height and frequency of cutting on the yield and crude protein of three perennial peanut (arachis pintoi) varieties, a field trail was carried out, at the borbollon farm, located in jaji, merida state, venezuela, at 1950 m.a.s.l. during two years. a completely randomized blocks design was used, with three replications in a factorial split-split plot treatment arrangement. for the main plot, three varieties (v1:17434, v2:18744 and v3:18749) were randomized, in the secondary plot two frequencies (f1: 35 days and f2:49 days) were applied and in the split-split plot three heights of cutting (h1: 0 cm, h2:5 cm and h3:10 cm) were randomized. for dry mater yield (dmy), differences were detected for height of cutting and the interaction varieties with frequency. the higher yield values were 19578.9 kg dm/ha/year, when perennial peanut was harvested at ground level, decreasing with cuttings heights of 5 and 10 cm, with 9278.5 and 6228.3 kg dm/ ha/year, respectively. in the 49 days of interval, the dm production was 10363 kg dm /ha /year and for 35 days it was 8133 kg dm/ha/year. the regression equation was dmy (kg dm/ha/year)=19578.86 - 2785.72h +145.13h2. yields of varieties ciat-17434 and ciat 18744 increased with the days between cuttings, while ciat-18798 had a different response. plant height increment (phi) was affected significantly (p<0,01) for the height and frequency of cutting , the higher increments values were 6.19 cm for 5 cm and 5.88 cm for 49 days, the regression equation was phi(cm)=5.15+0.45h-0.05h2. significant differences in crude protein were detected for varieties and height of cuttings. ciat 18744 and 18748 varieties were similar in protein content with 18.8 and 18,1%, respectively, higher than 15,8% for the variety ciat 17434. as a conclusion, dry matter and protein yield of arachis pintoi, increased according the height of cutting decreased, but plant height increment crude protein value were higher at the treatment
%K varieties of arachis pintoi
%K frequency of cutting
%K height of cutting
%K yield
%K protein.
%U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0798-72692010000400001&lng=en&nrm=iso&tlng=en