Evaluation of growth indices of hemp (Cannabis sativa L.) and sesame (Sesamum indicum L.) in intercropping with replacement and additive series

بوم شناسی کشاورزی

Article 4, Volume 2, Issue 1 - Serial Number 3, March 2010, Pages 27-36   

Document Type: Scientific - Research

DOI: 10.22067/jag.v2i1.7594

Authors

A. Koocheki^* ; M. Nassiri Mahallati; S. Khorramdel; S. Anvarkhah; M. Sabet Teimouri; S. Sanjani

Abstract

In order to evaluate the effect of intercropping with replacement and additive series for hemp (Cannabis sativa L.) and sesame (Sesamum indicum L.), a field experiment was conducted during growing season 2006-07 at the Agricultural Research Station of Ferdowsi University of Mashhad, Iran. A randomized complete block design with three replications was used. Treatments included different combinations of intercropping with replacement (75%sesame+ 25% hemp, 25%sesame+ 75% hemp, 50%sesame+ 50% hemp) and additive (50%sesame+ 100% hemp and 100%sesame+ 50% hemp) series and their monoculture. Results indicated that the highest and the lowest leaf area index (LAI) and dry matter (DM) accumulation of hemp were observed in 50% sesame+ 50% hemp (2.99 and 1921.7 g.m-2) and 50% sesame +100% hemp (1.06 and 929 g.m-2), respectively. The highest and the lowest LAI and DM accumulation of sesame were observed in monoculture (1.34 and 551.27 g.m-2) and 50%sesame+ 100% hemp (0.23 and 51.73 g.m-2), respectively. The maximum crop growth rate (CGR) of hemp and sesame were observed in 50% sesame+ 50% hemp (76.58 gm-2day-1) and monoculture (22.78 gm-2day-1), respectively. It seems that the intercropped sesame with hemp reduced the growth indices of sesame due to increasing shading on it and decreasing the absorption of radiation.

Keywords

Crop Growth Rate; Dry matter; Intercropping; Leaf Area Index

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