THE COMPARISON OF FLAT AND RAISED BED PLANTING IN IRRIGATED WHEAT AND THE MAINTENANCE OF THE RAISED BED FOR SUBSEQUENT FORAGE CORN

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ASADI A.; AFYOUNI D.; HEMAT A.; FARAHMAND S.

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ISSN: 2588-4824

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Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2006 | Volume:7 | Issue:28 Page(s): 27-40

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Title

THE COMPARISON OF FLAT AND RAISED BED PLANTING IN IRRIGATED WHEAT AND THE MAINTENANCE OF THE RAISED BED FOR SUBSEQUENT FORAGE CORN

Author(s)

ASADI A. | AFYOUNI D. | HEMAT A. | FARAHMAND S. | Issue Writer Certificate

Keywords

MINIMUM TILLAGEQ4

RAISED BEDQ4

WHEAT-FORAGE CORN ROTATIONQ3

Abstract

Wheat-forage corn is the most common rotation in irrigated land of Iran. The wheat conventionally is sown on the flat bed where the forage corn is planted on the RAISED BEDs typically 30-35cm wide with 75cm spacing between furrows. Using two different seed bed shapes for the consecutive crops is a limiting factor for implication of no-tillage or MINIMUM TILLAGE systems. To evaluate the possibility of applying a MINIMUM TILLAGE system in this rotation, hence the performance of wheat planted on RAISED BEDs need to be investigated. In a field experiment conducted at Kabootar Abad Research Center on a clay loam soil in 2002, the wheat broadcasted on flat bed was compared with grain drilling in two and three rows on the RAISED BEDs. This followed by the evaluation of the MINIMUM TILLAGE (reshaping the ridges used for wheat) and the conventional tillage (plowing + forming new ridges) for subsequent forage corn planted in one and two rows on RAISED BED. The parameters measured for comparing of wheat treatments were grain yield and yield components, biomass and the plant height. These were number of established plants, plant spacing, biomass and dry yield for the treatments applied in corn planting. The results showed that there was no significant difference in yields between the bed shapes (flat and raised-bed) used in wheat cultivation. For treatments with the equal number of seed row on ridges, the MINIMUM TILLAGE had no significant difference in biomass yield and stand establishment compared with the conventional tillage. It seems that the raised-bed planting for wheat and maintaining ridges for the subsequent corn can be recommended as an alternative method in wheatcorn rotation.

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