摘要:

The invitrodigestibility of organic matter and cellulose was determined in 17 fodders collected in western New South Wales. Further determinations were made on samples fortified or not by the addition of glucose, urea and yeast extract. There was a significant positive response to fortification in both organic‐matter and cellulose digestibility, the magnitude of the response varying with the fodder sample tested. The relationship between organic‐matter digestibility and cellulose digestibility was close only in the case of grasses, but for all samples consideration of both the amount and digestibility of cellulose accounted for 97% of the variation in organic‐matter digestibility. The results suggest that an inhibitor preventing cellulose digestion was present inCassia eremo

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00449.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

The present and potential land use of rough hill pastures in Brecknockshire has been investigated. The interests of the Brecon Beacons National Park, reservoir, Forestry Commission and commonland need not compete, but could be complementary. Areas containing a high proportion of the podzolized soils carry the most nutritious pastures, rich inAgrostisandVaccinium, and agreement amongst the commoners could ensure they are grazed to the limit of their productivity. In the absence of afforestation, the grazing of superior pastures around the peaks of the Fforest Fawr‐Brecon Beacons range is consistent with the interests of both the National Park and reservoir authorities, although the erosion hazard is greater. The S. and E. directed spurs of Drygarn, the N. E. plateau of Mynydd Eppynt and the S. W. flanks of the Black Mountains have similarly productive hill pastures. Areas such as the long back‐slopes of the Fforest Fawr‐Brecon Beacons range and higher land of Drygarn contain a high proportion of peaty gleyed soils underMolinetum, They provide inferior grazing but support the most productive forests, chiefly of Sitka spruce. By agreement amongst the commoners, where they are known, these areas could be leased to the Forestry Commission for afforestation. However, because common rights are so obscure, prior legislation would probably be necessary. Until their recent destruction, the uplands supported woodland and afforestation of selected areas need not be regarded as incongruous. It would also open up otherwise inaccessible p

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00450.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

Physical data, from an experiment to determine the effect of drying on the quality of S48 timothy seed, are used to derive an equation relating the average drying rate of the seed to the temperature and flow of the drying air. The relationship, which can be of use in practical problems, demonstrates the importance of air temperature in determining the drying rate, particularly when compared with similar Jula for wheat.

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00451.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

Further investigation into the value of gillie as a fertilizer for grassland indicates that weather affects responses. Dry weather permits good recovery of gillie N. On the other hand, on dry soil, losses of gillie N by volatilization may be increased if the quantity of sludge applied is insufficient to penetrate the soil. Cow‐and‐pig gillie may be more efficient than the pure‐cow type as a fertilizer, the former being well balanced in N and K, whereas cow gillie requires N supplement

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00452.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

Experimental evidence is presented on changes taking place in grass populations during the early stages of sward formation and in older leys. Differentiation which has taken place in ‘permanent’ pastures as a result of agronomic selection pressures is also discussed in relation to the maintenance of pastu

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00453.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

The relevant management advantages and disadvantages of the ley and permanent pasture are reviewed. Doubts on the possible long‐term effects of soil structure, fertility etc. are discussed from the farmer's point of vie

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00454.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

The grass breeder's approach to the problem of producing new varieties is related to factors controlling sward production. Those factors under the control of the breeder, especially plant type and management, are considered in more detail.It is argued that the methods used by the breeder produce seed of predictable performance when grown under a defined set of conditions‐climate, soil and, above all, management. The fate of this ‘improved’ seed is considered in relation to the multitude of seeds mixtures prescribed today. Large imports of seed are made annually into the U. K. but bred strains account for only a low percentage of the herbage seeds used.Some results from Cambridge trials are presented to show the effects on sward production of plant density, seed size, depth of sowing, cutting treatments and the mixing of genotypes. It is suggested that these results point to the frequent misuse of bred strains, both in blending and in the quantity of seed recommended per unit area.The future prospects for herbage breeding are discussed and some novel ideas of cropping mentioned which may, to a limited extent, supplement the use of herbage

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00455.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

Book reviewed in this article:M. A.F. F. Grass and grasslandSUTTONS GRASS ADVISORY SERVICE. The identification of grasses by the foliage

ISSN:0142-5242    

DOI:10.1111/j.1365-2494.1966.tb00456.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY