On-farm testing of a new set of crop management practices for enhanc= ing rice productivity and profitability in Cauvery delta zone, Tamil Nadu</titl= e>  <style>  </style>  </head> <body lang=3DEN-US style=3D'tab-interval:.5in'> <div class=3DSection1> On-farm testing of a new set o= f crop management practices for enhancing rice productivity and profitability in <= span class=3DSpellE>Cauvery delta zone, Tamil Nadu</= span><o:p></o:p> <o:p> </o:p> V. Ravi, R. Raje= ndran, S. Porpavai and S. Anbuman= i<o:p></o:p> Soil and Water Management Research Institute= , Thanjavur – 613 501, Tamil Nadu,<o:p></o:p> <o:p> </o:p></= p> </span= >On-farm testing to better understand the phenomenon namely System of Rice Intensification (SRI) is of particular significance to the Cauvery Delta Zone (CDZ), T= amil Nadu, for two specific reasons. (i) Scarcity of water (ii) Increasing input costs. <o:p></o:p> &= nbsp; <o:p></o:p> &= nbsp; The SRI approach focused on five factors viz., young seedling (14 d), one seedl= ing per hill, square planting (22.5 cm x 22.5 cm), mechanical weeding with soil stirring by a cono-weeder and intermittent irrigation. On farm as = well as on station trials were conducted during Kuruvai</sp= an> (Dry) season of 2002 to evaluate SRI. One farm each in Aaarupathi and Kathiramangalam in Cauvery</span= > old delta and two farms in Edamelayur in Cauvery New Delta were selected as the sites for tria= ls, besides one on station trial at Tamil Nadu Rice Research Institute, Aduthurai</spa= n>. The trials had two treatments as comparison of SRI w= ith conventional method of rice cultivation in non replicated observation plot. The conventional = method of rice cultivation had the components of 25 day seedlings, multiple seedling/hill, random planting, hand weeding and continuous flooding. <o:p>= </o:p> <o:p> </o:p> &= nbsp; The SRI method gave the highest grain yield of 7.650 and 5.680 t/ha in Aaarupathi and Kathiramangalam</= span>, respectively, and 5.730 and 7.443 t/ha in farm 1 and farm 2 respectively in= the Edamelaiyur. This represents an increase = of grain yield over that of traditional practices to the tune of 48 and 40% in= Aaarupathi and Kathiramangalam</= span>, respectively, and 50 and 49% in farm 1 and farm 2 at E= damelaiyur. The superiority of SRI was also ob= served in the On-station trial which recorded grain yield of 7.314 t/ha as compare= d to 5554 t/ha in traditional practices (an increase of 31%). These increased gr= ain yields in SRI was due to lengthier and higher number of panicles per unit a= rea, more filled grains per panicle and lower sterility percentage through better soil, water and nutrient management. The data also confirmed that when grown under SRI, rice is capable of utilizing fertilizer N very efficiently thereby saving of 10-25 kg N/ha. The SRI has potential for improving yield and nutrient efficiency, besides redu= cing cost at farm level as compared to labour intens= ive traditionally transplanted rice. <o:p></o:p> <o:p> </o:p> ****<o:p></o:p> <o:p> </o:p> </div> </body> </html>

MIME-Version: 1.0 Content-Location: file:///C:/EA4356D2/Abstract52.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" On-farm testing of a new set of crop management practices for enhanc= ing rice productivity and profitability in Cauvery delta zone, Tamil Nadu</titl= e>  <style>  </style>  </head> <body lang=3DEN-US style=3D'tab-interval:.5in'> <div class=3DSection1> On-farm testing of a new set o= f crop management practices for enhancing rice productivity and profitability in <= span class=3DSpellE>Cauvery delta zone, Tamil Nadu</= span><o:p></o:p> <o:p> </o:p> V. Ravi, R. Raje= ndran, S. Porpavai and S. Anbuman= i<o:p></o:p> Soil and Water Management Research Institute= , Thanjavur – 613 501, Tamil Nadu,<o:p></o:p> <o:p> </o:p></= p> </span= >On-farm testing to better understand the phenomenon namely System of Rice Intensification (SRI) is of particular significance to the Cauvery Delta Zone (CDZ), T= amil Nadu, for two specific reasons. (i) Scarcity of water (ii) Increasing input costs. <o:p></o:p> &= nbsp; <o:p></o:p> &= nbsp; The SRI approach focused on five factors viz., young seedling (14 d), one seedl= ing per hill, square planting (22.5 cm x 22.5 cm), mechanical weeding with soil stirring by a cono-weeder and intermittent irrigation. On farm as = well as on station trials were conducted during Kuruvai</sp= an> (Dry) season of 2002 to evaluate SRI. One farm each in Aaarupathi and Kathiramangalam in Cauvery</span= > old delta and two farms in Edamelayur in Cauvery New Delta were selected as the sites for tria= ls, besides one on station trial at Tamil Nadu Rice Research Institute, Aduthurai</spa= n>. The trials had two treatments as comparison of SRI w= ith conventional method of rice cultivation in non replicated observation plot. The conventional = method of rice cultivation had the components of 25 day seedlings, multiple seedling/hill, random planting, hand weeding and continuous flooding. <o:p>= </o:p> <o:p> </o:p> &= nbsp; The SRI method gave the highest grain yield of 7.650 and 5.680 t/ha in Aaarupathi and Kathiramangalam</= span>, respectively, and 5.730 and 7.443 t/ha in farm 1 and farm 2 respectively in= the Edamelaiyur. This represents an increase = of grain yield over that of traditional practices to the tune of 48 and 40% in= Aaarupathi and Kathiramangalam</= span>, respectively, and 50 and 49% in farm 1 and farm 2 at E= damelaiyur. The superiority of SRI was also ob= served in the On-station trial which recorded grain yield of 7.314 t/ha as compare= d to 5554 t/ha in traditional practices (an increase of 31%). These increased gr= ain yields in SRI was due to lengthier and higher number of panicles per unit a= rea, more filled grains per panicle and lower sterility percentage through better soil, water and nutrient management. The data also confirmed that when grown under SRI, rice is capable of utilizing fertilizer N very efficiently thereby saving of 10-25 kg N/ha. The SRI has potential for improving yield and nutrient efficiency, besides redu= cing cost at farm level as compared to labour intens= ive traditionally transplanted rice. <o:p></o:p> <o:p> </o:p> ****<o:p></o:p> <o:p> </o:p> </div> </body> </html>