Journal of Food, Agriculture and Environment

Effects of harvesting time and harvesting height on grain yield and agronomical characters in rice ratoon (Oryza sativa L.)

Author(s):

Hossein Yazdpour, Mohamad Mehdi Shahri, Ali Soleymani ^*, Mohamad Hesam Shahrajabian

Recieved Date: 2011-08-06, Accepted Date: 2012-01-14

Abstract:

Rice is the staple food and it is the second most important food in Iran. In order to survey the effects of harvest time and harvest height on grain yield and yield components of rice (Taroem Hasemi variety), an experiment was done in Sari province in 2009. A split plot design within randomized complete block design with 3 replications was used. In this experiment, harvest time was considered as the main factor at two levels (T1 the first harvest on 29^th August and T2 8^th September), and harvest height was considered as sub factor (H1 level ground, H2 10 cm, H3 20 cm, H4 30 cm and H5 40 cm). Harvest time had significant effect on grain yield and harvest index. Plant height, flag leaf length, panicle length, straw yield and biological yield were not significantly affected by harvest time. Harvest time and interaction of harvest time and harvesting height had no significant influence on experimental characteristics. On the basis of the results the highest plant height, flag lead length, panicle length, grain yield, straw yield, biological yield and harvest index were obtained on 29^th August harvesting time. There were no significant differences between harvesting height treatment, but the highest yield was related to harvesting height of 40 cm. The low grain yield of the rice may be attributed to the poor management of cutting height and harvesting time during the cultivation and harvesting period. The results of the survey concluded that the harvesting at 40 cm height on 29^th August had the potential to produce higher yields. 

Keywords:

Harvesting time, harvest height, grain yield, agronomical characters, rice

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Agriculture
Pages: 438-440

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