Title:	Climatic classification: the semi-arid tropics and its environment a review.
Authors:	REDDY, S. J.
Affiliation:	SJEEVANANDA REDDY, Consultor CPATSA.
Date Issued:	1983
Citation:	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 18, n. 8, p. 823-847, ago. 1983.
Description:	This paper analyses the advantages and limitations in using the Troll, Hargreaves and modified Thornthwaite approaches for the demarcation of the semi-arid tropics. Data from India, Africa, Brazil, Australia and Thailand, were used for the comparison of these three methods. The modified Thornthwaite approach provided the most relevant agriculturally oriented demarcation of the semi-arid tropics. This method in not only simple, tut uses input data that are avaliable for a global network of stations. Using this method the semi-arid tropics include major dryland or rainfed agricultural zones with annual rainfall varying from about 400 to 1,250 mm. Major dryland crops are pearl millet, sorghum, pigeonpea and groundnut. This paper also presents the brief description of climate, soils and farming systems of the semi-arid tropics.
Thesagro:	Clima Meio Ambiente
NAL Thesaurus:	climate environment
Keywords:	Classificacao Regiao arida Regiao semi-arida Classificaton Arid region Semi-arid region Climatic
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)