Author : Macaballug, Edwin F.

Summary : A study on rice-peanut intercropping was conducted for two cropping seasons. different row combination and interval row spacing were used to determine their effect on the agronomic characteristics of rice and peanut. Laid out in split plot in RCBD, the experiment had three replications. The experimental area was fairly level. It had an organic matter of 2.5% pH of 6.66 and available phosphorous and potassium of 52 ppm and 500 ppm respectively. Comparison among means of the different spatial arrangements and monocrop rice showed that plant height at harvest was significantly highest in triple row ratios 3R:3P (98.34 cm) and 3R:1P (118.83 cm) for dry and wet seasons, respectively. Similarly, rice intercropped with peanut at double row ratio 2R:2P outranked monocrop rice on panicle length (21 and 24.17 cm) and number of filled seeds per panicle (163 and 174) in both season frames. Likewise, the weight of 1000 seeds was significantly higher at triple row ratio 1R:3P with means of 23.97 and 24.20 g for dry and wet seasons, respectively. Hay yield was significantly highest at three rows of rice intercropped with one row peanut (3R:1P row ratio) yielding 7.30 and 8.31 t/ha in both cropping seasons. However, monocrop upland rice consistently produced the highest number of tillers per hill (8.16 and 8.71) and seed yield per hectare (1.61 and 3.38 t/ha) in the two planting seasons.