The study was conducted to evaluate the dynamics of the tillering process in marandu palisadegrass submitted to two cutting heights (15 and 30 cm), and three cutting intervals (leaf appearance intervals of three, four and five leaves per tiller). A complete randomized block design, with three replications and a 2 × 3 factorial arrangement was used. Evaluations consited of monthly measurements of tiller appearance and death in two tussocks per plot, with new tillers sorted into basal and aerial tillers. […]

The objective of this research was to compare three methods for estimating LAI in marandu palisadegrass (Brachiaria brizantha Hochst. ex A. Rich cv. Marandu) swards subjected to four grazing heights (10, 20, 30 and 40 cm) under continuous stocking by beef cattle. Evaluated methods were: (1) Direct, destructive (LAIDM); (2) Indirect, destructive, based on the use of tiller population density and mean leaf area per tiller (LAITPD); and (3) Indirect, non-destructive, based on the use of a LAI-2000 canopy analyser […]

The productive and structural characteristics of Pearl millet (Pennisetum americanum (L.) Leeke) under continuous stocking rate and their relationship with beef heifers performance exclusively under grazing (PAST), supplemented with corn grain (PAST + C) or citric pulp (PAST + P) was evaluated. There was no difference among treatments for herbage mass, forage allowance, leaf lamina mass, leaf lamina allowance, daily accumulation rate of forage and herbage total production. Daily accumulation rate of forage, leaf lamina mass and leaf lamina allowance […]

It was carried out an experiment to test four levels of soil base saturation (20, 40, 60, and 80%), four rates of phosphorus (0, 80, 160, and 240 kg/ha of P2O5) and four rates of nitrogen (0, 100, 200 and 300 kg/ha) during the phase of establishment of Panicum maximum cv Massai, in an Oxisol of Brazilian Cerrado. The experimental design was a randomized uncompleted block, in fractionated factorial type (1/2)43, with four blocks and two replications. Two cuts along […]

It was evaluated the effect of anatomical characteristics and tissue lignification sites on the leaf blade nutritive value of four grasses sampled during the dry and rainy season. Fresh samples of the two last expanded leaf blades on the tiller tops of molassesgrass (Melinis minutiflora Pal. De Beauv), signalgrass (Brachiaria decumbens Staph.), sapegrass (Imperata brasiliensis Trin.) and, jaraguagrass (Hyparrhenia rufa (Nees) Staph.) were collected in the rainy and dry seasons. These samples were evaluated according to anatomical characteristics using light […]

The objectives of this study were to evaluate the existence of a relationship between tiller size and tiller number in grazed palisadegrass swards and to verify if adjustments related to changing in leaf area index (LAI), leaf area:tiller volume ratio (R), and tiller bulk density in the prediction equation of the response would explain eventual slope deviation from the theoretical predict slope. Treatments corresponded to four sward “steady state” conditions (10, 20, 30, and 40 cm sward surface heights), maintained […]

A new cultivar of Panicum maximum (Massai) was evaluated for commercial release, at the Embrapa Beef Cattle, Campo Grande, MS, Brazil, from November 1993 to April 1999. At establishment, 2,7 t/ha of lime, 400 kg/ha of 0-20-20 and 50 kg/ha of FTE were applied. Maintenance fertilizer was 200 kg/ha of 0-20-20 NPK and 50 kg/ha N, annually. The Panicum maximum cultivars tested were Mombaça and Massai. The experimental design was a randomized complete block with two treatments and two replicates. […]

The effect of two soil handling systems was evaluated (without furrow and with furrow), three spacing (1.0 m × 1.5 m; 1.5 m × 2.0 m and 2.0 m × 2.0 m) on the quality and the productivity of rooster tree 60 days after cut. It was used a split-plot (space and time) factorial arrangement in a randomized block design. Factors were two soil handling systems and three planting densities (2 × 3) with five replications per treatment. Plants chosen […]

The effect of nitrogen on the root system of the species Panicum maximum Jacq. cv. IPR-86 Milênio, under grazing, was evaluated. The N rates were 0; 150; 300 and 450 kg/ha.year. The root density was evaluated during pre-grazing at five years of successive N application, in three depths (0-10; 10-20 and 20-40 cm) and the root growth at 7, 14, 21, and 35 days after grazing. The grazing method adopted was rotational stocking. Root length and root mass densities in […]

This work evaluated the herbicides selectivity acetolactate synthase inhibitors and photosynthetic II applied in post- emergency in palisadegrass (Brachiaria brizantha cv. Marandu) and signalgrass (Brachiaria decumbens cv. Basilisk) plants in field conditions and their effect in seed quality. Treatments tested in g ha-1 were: imazethapyr at 100, chlorimuron-ethyl at 15, nicosulfuron at 50, bentazon at 720, atrazine at 3.000, and control plot. Two field trials were set up on complete randomized block design with four replicates; laboratory studies were carried […]