Data/hora: 08/06/2024 02:47:37

Biblioteca(s): | Embrapa Amapá; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Pantanal.
Data corrente: | 25/07/1995
Data da última atualização: | 11/05/2022
Autoria: | HAYDOCK, K. P.; SHAW, N. H.
Título: | The comparative yield method for estimating dry matter yield of pasture.
Ano de publicação: | 1975
Fonte/Imprenta: | Australian Journal of Experimental Agriculture and Animal Husbandry, v. 15, p. 663-670, Oct. 1975.
Idioma: | Inglês
Conteúdo: | This paper describes a new method for estimating pasture yield in which the yields of random quadrats are rated with respect to a set of reference quadrats preselected in the field to provide a scale which is available for reference throughout the sampling. Three alternative calibration procedures are described based either on the dry matter yields of the reference quadrats or on the yields of quadrats rated and cut either during or at the end of sampling. The second and third procedures are shown to have advantages over the first. When testing the methods with four observers and two types of clibration scales, estimates of mean yield were generally within 4 per cent of the actual mean with a maximum difference of 8 per cent. Methods are given for calculating the number of samples required to obtain minimum variance for the estimate of mean yield for a given cost in terms of time spent in the field.
Palavras-Chave: | Comparative yield method; Dry matter; Metodo de rendimento comparativo; Pasture; Production.
Thesagro: | Matéria Seca; Pastagem; Produção; Seca.
Categoria do assunto: | --
Registro original: | Embrapa Amapá (CPAF-AP)

Exemplares:

CPAMN-UEPP - (6352-1) - ADP - SP - PP - SP 4158/1991 -  - SP4158/91 - DIS
CPAF-AP - (14008-1) - ADD - SP - PP - 00001 -  - 00001 - DIS
CPAP - (28689-1) - ADD - SP - -- - SP0378 -  - 0378 - DIS