Data/hora: 11/06/2024 06:22:51

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	01/02/2019	
Data da última atualização: 	01/02/2019	
Autoria: 	ESKANDARI, I.; ASGHARI, J.; RAHIMIZADE, R.; GAFFARI, A.; SIADAT, H.; PALA, M.; KETALA, H.	
Título: 	Sustainable soil management for cereal-based cropping systems in the dry highlands of Western Iran.	
Ano de publicação: 	2005	
Fonte/Imprenta: 	In: INTERNATIONAL CONFERENCE ON THE DEVELOPMENT OF DRYLANDS, 7., 2003, Tehran, Iran. Sustainable development and management of drylands in the twenty-first century; proceedings. Aleppo, Syria: ICARDA, c2005. p. 108-112.	
Idioma: 	Inglês	
Conteúdo: 	In the dry highlands of northwestern and western Iran, a variable supply of water due to seasonal differences in precipitation leads to parallel fluctuations in crop yields. Winter wheat (Triticum aestivum L.) is a major crop in the semiarid region of Iran that is generally grown following a 14-months fallow period. Proper management of soil should be considered for sustainable production and long-term conservation of natural resources within appropriate crop rotation of cereals/fallow or cerealsllegumes or others. This study was conducted to determine the effect of tillage systems in a fallow-wheat and a chickpea-wheat rotation on yield of a dryland winter wheat over a four-year period at the Maraghe Agricultural Research Station, near Tabriz, Iran. The first experiment, conducted during 1993-1997, was designed to test 16 treatment combinations of four kinds of fall tillage (Semimoldboard plough, moldboard plough, notillage and chisel plough) and four different weed management treatments in spring (including ducks-foot, herbicide, disk harrow and rod weeder). The second experiment, conducted during 1998-2000, studied the effect of 9 tillage and planting methods in a chickpea wheat rotation on the yield of a dryland winter wheat. The tillage treatments included four practices commonly adopted by farmers; the other five included various levels of tillage using different tilling equipment. The purpose of this study was to identify the optimal tillage and planting method for wheat production in chickpea-wheat rotation in dryland farming in areas where the average longterm annual precipitation is below 364 mm. Results from the first experiment indicated that both fall and spring operations had a highly significant effect on wheat grain yield. Chisel plow in the fall plus herbicide application in the spring resulted in the highest yield (2112kglha), while notillage in fall and disk harrow in spring resulted in the lowest grain yield (1514 kglha). In the second experiment, highest grain yield (1104 kglha) was obtained where tillage involved chisel plow + disking before drilling the seed. The lowest grain yield (615 kglha) was obtained under the common practice of farmers (hand broadcasting of seed and covering by disk harrow	
Palavras-Chave: 	Dry and semi-dry cultivation; Sustainable land use.	
Thesaurus Nal: 	Cropping systems; Highlands.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (38827-1) - ADD - PL - PP - 631.45 - B453s -  - DIS