| The experiment aimed to study the effects of crop rotation in sugarcane field during the last ratoon harvest and planting a new sugarcane crop, on soil improvement, increasing sugar yield and economic return in northeast Thailand. The effect of Jack bean (Canavalia ensiformis), sunn hemp (Crotalaria juncea), upland rice (Oryza saliva L.) fallowed as the rotation system. The experiment was a Randomize Complete Block Design with three replications and 7 treatments. They included T1) farmer’s method (fallow followed by sugarcane receiving chemical fertilizer control (15-15-15 at 50 kg/rai), T2) fallow followed by sugarcane receiving chemical fertilizer (16-16-16 at 25 kg/rai+22-8-10 at 25 kg/rai and compost fertilizer at 2 tons/rai), T3) sunn hemp planting as... |
