Effect of defoliation frequency on the growing characteristics and yield of <i>Pennisetum americanum ? P. purpureum</i>

LIN Yong-hui; TANG Long-fei; HUANG Xiu-sheng; FENG De-qing; CHEN Zhong-dian

Volume 21 Issue 4

Apr. 2012

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Article Navigation > Fujian Journal of Agricultural Sciences > 2006 > 21(4): 389-392

LIN Yong-hui, TANG Long-fei, HUANG Xiu-sheng, FENG De-qing, CHEN Zhong-dian. Effect of defoliation frequency on the growing characteristics and yield of Pennisetum americanum ? P. purpureum[J]. Fujian Journal of Agricultural Sciences, 2006, 21(4): 389-392.

Citation:

LIN Yong-hui, TANG Long-fei, HUANG Xiu-sheng, FENG De-qing, CHEN Zhong-dian. Effect of defoliation frequency on the growing characteristics and yield of Pennisetum americanum ? P. purpureum[J]. Fujian Journal of Agricultural Sciences, 2006, 21(4): 389-392.

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Effect of defoliation frequency on the growing characteristics and yield of Pennisetum americanum ? P. purpureum

1.
Institute of Agricultural Ecology, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China

Received Date: 2006-03-01
Rev Recd Date: 2006-05-09
Publish Date: 2006-12-15

Abstract

Abstract

Effect of defoliation frequency on the growing characteristics and yield of Pennisetum americanum譖.purpureum were studied under the condition of middle soil fertility and two fertilization rates.The results showed that the annual biomass amounts in the treatments of 30 d,45 d and 60 d defoliation interval were 193.48 t·hm-2,269.75 t·hm-2 and 237.77 t·hm-2 respectively.Defoliation stimulated the tillering trend of Pennisetum americanum譖.purpureum,however,frequent defoliation (30 d) reduced the up-ground biomass,caused the exhaustion of root system.Defoliation in long-term recycle (60 d) resulted in a reduction of biomass production,an increase of stem/leaf ratio.The biomass and growing characteristics of Pennisetum americanum譖.purpureum in the treatment of 45 d defoliation interval were more ideal for its husbandry utilization of grass-eating animals.
- Pennisetum americanum譖. purpureum,
- defoliation interval,
- stem/leaf ratio,
- biomass production

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References(2)

References

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