Document Type : Research Paper
Authors
1 Research Institute of Forest and Rangelands, P.O.Box : 13185-116, Tehran, Iran
2 Organization in Research and Education Agriculture
3 Research Institute of Forest and Rangelands, P.O.Box : 13185-116, Tehran,Iran
Abstract
In order to effects of reduction in nitrogen fertilizer in agroecosystem, a field experiment was carried out on Mellisa officinlais in Alborz research complex in 2004 year. The treatments was 80 kgha-1 nitrogen application in soil and %2 spry application that was compared to the control treatment (no fertilizers) in complete randomize block design with three replication. In both treatments, the first application was conducted when plant high was 10 cm and second application was after 30 days.
The harvest carried out before flowering.
The results showed that, in comparison of other treatments, the application of nitrogen in form of spry , raised dry mater yield to 5532.8 kgha-1. The LSD test showed that, the spry method was significant (a=%5) to control. In the spry method, nitrogen fertilizer reduced 87.5% to the control. Based on the results, low input Agriculture systems could be introduced for sustainable agriculture.
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