Pengaruh jarak tanam terhadap pertumbuhan dan produktivitas tanaman padi IPB 4S

Abstract

This research was carried out in February to June 2014. Design of experiment is randomized complete block design with a spacing factor as a treatment and consists of 6 levels. The levels of spacing are tiles 15 cm x 15 cm, 22 cm x 22 cm, 30 cm x 30 cm, 50 cm x 50 cm and legowo spacing (2: 1) 40 cm x 25 cm x 15 cm and 50 cm x 30 cm x 15 cm. Each treatment was repeated 3 times and resulted 18 experimental units. The size of experimental plots is 5m x 5 m. The results indicate that the wide spacing of 50 cm x 50 cm resulted in the number of tillers and number of productive tillers more than the narrower spacing and legowo, but a spacing of 30 cm x 30 cm resulted in higher productivity than other spacing. In addition, a late blight pest and birds attack intensives during grain filling which may inferencesd the productivity of IPB 4S.