Pengisian Gabah Beberapa Varietas Padi pada Periode Cekaman Kekeringan Berbeda dalam Sistem Sawah

Abstract

Rice, the main crop in Indonesia, is facing many problems in its development which is an issue of drought. Effect of drought on rice causes puso and decreases productivity. The objective of this research is to study the response of several varieties of rice grain filling at four different periods of drought. This research was conducted at the University Farm IPB, Babakan, Sawah Baru, Dramaga, Bogor, on land under Polyethylene roof from October 2011 until June 2012. The treatment design Randomized Completely Block Design with Split plot design of two factors. The first factor is period of drought treatments as main plots consist of four standards: dried at 3 weeks after tranplanting (MST) (K3); dried at 6 MST (K6); dried at 9 MST (K9) and control (K0) (without drying). Varieties as a subplot consist of eight standards are: IR-64, Ciherang, IPB 3S, Way Apo Buru, Jatiluhur, Menthik Wangi, Silugonggo and Rokan. Periods of drought affected grain weight and grain number of plant. Varieties affected number of husk of plant. 1000 grain weight was affected by periods of drought stress, varieties and interaction of both.