scholarly journals A COMPARISON OF DIFFERENT PASTURE ROTATIONS

1973 ◽  
pp. 204-210 ◽  
Author(s):  
N.M. Tainton
Keyword(s):  
Dry Matter ◽  
Grazing Intensity ◽  
Animal Production ◽  
Negative Association ◽  
Dry Matter Production ◽  
Botanical Composition ◽  
Tropical Regions ◽  
Matter Production ◽  
Herbage Quality

THE RESULTS of cutting trials which have been designed to provide information on grazing frequency and intensity in pasture rotations have, in both temperate and tropical regions, often shown that lax and infrequent cutting promotes higher dry matter production than does more intensive and frequent cutting, except on prostrate rhizolmatous and stoloniferous pastures These results have, however, seldom been successfully translated into increased animal production where the negative association frequently observed between dry matter production and both herbage quality and the degree of utilization of the dry matter produced often negates the increased production resulting from lax and infrequent grazing. Added to this are the longer term effects of spelling interval and grazing intensity on sward density and botanical composition, these effects varying through the season as the morphological condition of the pasture species changes.

scholarly journals Nitrate leaching and N2-fixation in grasslands of different composition, age and management

2004 ◽  
Vol 142 (2) ◽  
pp. 141-151 ◽  
Author(s):  
J. ERIKSEN ◽  
F. P. VINTHER ◽  
K. SØEGAARD
Keyword(s):  
Perennial Ryegrass ◽  
Nitrate Leaching ◽  
Dry Matter ◽  
Grazing Intensity ◽  
Dry Matter Production ◽  
Leaching Losses ◽  
N Removal ◽  
Matter Production ◽  
Over Time

Grass-legume associations may offer a way of improving the N efficiency of dairy farming, but may also have an adverse impact on the environment by increasing leaching losses. Nitrate leaching from four cropping sequences with different grassland frequency and management (long-term grazed, long-term cut, cereals followed by 1 and 2-year grazed leys) were investigated on a loamy sand in central Jutland for both unfertilized grass-clover (perennial ryegrass (Lolium perenne L.)/white clover (Trifolium repens L.)) and fertilized perennial ryegrass (300 kg N/ha) swards during 1997–2002. Furthermore, 1 year (2001) of N2 fixation in 1-, 2- and 8-year-old grass-clover pastures was determined. Nitrate leaching from grazed unfertilized grass-clover was always considerably lower than from grazed fertilized ryegrass. The effect of grassland age on nitrate leaching was insignificant in grass-clover but clear in grazed ryegrass, where levels increased dramatically with sward age. In production years 6–8, leaching from grass-clover was only 9–13% of the comparable losses from ryegrass. Under the cutting regime grass-clover showed a significant reduction in both yield and N-removal with increasing sward age, whereas for ryegrass these figures did not show any decreasing trend. N2 fixation was lower in 8-year-old swards compared with fully established 2-year-old swards as a consequence of lower dry matter production, lower clover content and a lower proportion of clover-N derived from the atmosphere. The results from the present study indicate that the higher leaching losses observed in fertilized grass compared with unfertilized grass-clover systems were caused by (1) a reduction in N2-fixation in grass-clover over time and (2) a reduction in dry matter production in grass-clover over time, lowering the grazing intensity and the recycling of grassland N via animal excreta.

Does post-grazing sward height influence sward characteristics, seasonal herbage dry-matter production and herbage quality?

2014 ◽  
Vol 70 (1) ◽  
pp. 130-143 ◽  
Author(s):  
E. Ganche ◽  
M. O'Donovan ◽  
L. Delaby ◽  
T. M. Boland ◽  
E. Kennedy
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Sward Height ◽  
Matter Production ◽  
Herbage Quality

Fertilizer and management responses on permanent downland pasture grazed by cattle

1965 ◽  
Vol 64 (3) ◽  
pp. 335-342 ◽  
Author(s):  
D. D. Kydd
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Botanical Composition ◽  
Grazed Pasture ◽  
Matter Production ◽  
Autumn And Winter

1. The effect of rest during the autumn and winter on the dry-matter production and botanical composition of a cattle-grazed pasture was studied for four consecutive seasons.

scholarly journals Productivity of Forages in Grassland Merapi Post-Eruption Area, Sleman, Yogyakarta, Indonesia

2015 ◽  
Vol 17 (2) ◽  
pp. 97
Author(s):  
Nafiatul Umami ◽  
Bambang Suhartanto ◽  
Bambang Suwignyo ◽  
Nilo Suseno ◽  
Sarah Adrian Fenila ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Crude Fiber ◽  
Dry Matter Production ◽  
Botanical Composition ◽  
Matter Production ◽  
Line Intercept

This research aimed to investigate the productivity and quality of forages (including dry matter, organic matter, crude fiber, crude protein, and extract ether) in the area of Kali Kuning and Krasak River. This area was affected by Mount Merapi Eruption on 2010. The data were taken from the area around the river due to the area was found to be firstly revegetated after the eruption. The Forage classified as grass, legume and forbs. The method applied in the research was Line Intercept method which was done by seeing the botanical composition there and was performed at several observation points. The forage was taken as the sample and then calculated its production and proximately analyzed to determine its chemical composition. The results showed that around the river, the widest cover area in 2013 and 2014 was Brachiariabrizantha grasses. The largest dry matter production in 2013 was Pennisetumpurpuphoides as much as 165.57 g m–2, while in 2014 the largest production of DM was Brachiariabrizantha as much as 190.37 g m–2. Frobs with another type of weed also spread in this area. The Quality of forages around Krasak River increased in 2014 due to the addition of organic matter contained in the soil and the minerals weathering from year to year.

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