Interceptação luminosa, massa de raízes e acúmulo de forragem em Arachis pintoi cv. Belmonte submetido a intensidades de pastejo

Carvalho, Lucas da Rocha

doi:10.11606/d.11.2014.tde-19032014-161818

Cited by 1 publication

(1 citation statement)

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“…After plant establishment, the area was divided into 16 paddocks (approximately 210 m 2 each), which were used for a series of experiments mimicking contrasting intensities of continuous stocking management (swards maintained at 5, 10, 15, and 20 cm) through controlled grazing twice a week from November 2012 to March 2014 (Carvalho, 2014). From April 2014 to November 2014, all paddocks were subjected to a common rotational grazing management to minimize possible carryover effects from previous experiments.…”

Section: Methodsmentioning

confidence: 99%

Rotational grazing management of forage peanut

2020

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The perennial forage peanut is a stoloniferous, perennial tropical legume with potential for use in pastures. Based on the hypothesis that under intermittent stocking herbage accumulation would follow a similar pattern to that described for tropical forage grasses, the objective of this study was to evaluate canopy characteristics and herbage accumulation of forage peanut subjected to strategies of rotational grazing management. Treatments corresponded to all possible combinations of two grazing frequencies (regrowth interrupted at 95% and maximum canopy light interception – LI95% and LIMax) and two grazing severities (post-grazing canopy heights (CHs) equivalent to 40 and 60% of the pre-grazing heights). Treatments were imposed to experimental units during an adaptation period (from November 2014 to January 2015) and the subsequent experimental period lasted from February 2015 to April 2016, comprising two consecutive pasture growing seasons with no interruption between them (summer I to summer II). The pre-grazing targets of LI95% and LIMax corresponded to CHs of 13 and 18 cm, respectively. Forage peanut showed high grazing tolerance as pre-grazing leaf area index (except during summer I and autumn/winter), total herbage, and leaflet dry matter accumulation varied only with seasons. Higher rates of herbage production were recorded during summer I and summer II, followed by those during late and early spring and autumn/winter. Since there was no difference in the pattern of herbage accumulation between LI95% and LIMax and stolons predominated at the bottom of the canopies, forage peanut may be rotationally grazed with greater flexibility than most tropical forage grasses. Recommended pre-grazing CHs are within 13 and 18 cm, and post-grazing heights between 40 and 60% of the pre-grazing height.

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Section: Methodsmentioning

confidence: 99%