Title: Application of bio-herbicide alternatives for chemical weed control in rice
Abstract: An experiment was conducted to decipher the feasibility of using crop extract (bio-herbicide) as an alternative for chemical weed control in rice. After seed bed preparation, seedlings of IR-6 rice were transplanted in a randomized complete block design with four replications. The data showed that weedy check treatment recorded the maximum fresh and dry weed biomass. While application of half dose of Ryzelan + half dose of sorghum water extract (sorgaab) produced the maximum number of tillers, panicles and normal kernels. The use of sorghum water extract (alone) produced the maximum number of spikelets, 1000-grain weight and paddy yield. Based on these results, it is concluded that the use of crop extract can safely be used as a bio- herbicide for controlling weeds and obtaining better yields of rice.[Imran Wazir1, Muhammad Sadiq1, Mohammad Safdar Baloch1, Inayat Ullah Awan1, Ejaz Ahmad Khan, Inayat Hussain Shah, Muhammad Amjad Nadim, Abdul Aziz Khakwani and Imam Bakhsh (2011). Application of bio-herbicide alternatives for chemical weed control in rice. Pakistan Journal of Weed Science Research, 17(3), 245-252 ]
Keywords: Allelopathy, hand weeding, rice, sorghum, water extract, weeds, herbicide.