STUDY ON DIFFERENT CROPPING SYSTEMS ON TWO RENEWED SUPERIOR VARIETIES OF RICE TOWARD RICE GROWTH AND YIELD AT PENGGALAMAN VILLAGE, BANJAR REGENCY

Improved varieties of rice crops play important roles in increasing rice yields. The use of improved varieties and quality seed is one of the basic components in an integrated crop management. This research aims at finding out cropping systems upon two renewed varieties of rice growth and rice yield. The experiment was conducted in Penggalaman Village, District of West Martapura, Banjar Regency from April to September 2013 by using demonstrated plot (demplot) of 65M x 15M in size. The demplot was divided into nine smaller demplots with the size of 11M x 6M for each. A trench of 2M width was made in between of each plot, while a wide elongated trench with the width of 2M was made alongside each plot. The trenches functioned as a way of preventing pest rodents and as a medium to keep fish (simultaneous technique of rice cultivation and pisciculture). Rice varieties Pandanwangi and Ciherang were tested by using 4 different cropping systems that is system of simultaneous rice cultivation and pisciculture Legowo 2.1, Legowo 4.1, System of Rice Intensification (SRI), and tile system.The results indicated that Pandanwangi variety tested by using SRI yielded in 8,713 kg/ha of rice, higher than SRI system for Ciherang variety which yielded 8,308 kg/ha.At the same time, the system of simultaneous rice cultivation and pisciculture Legowo 4.1 tested for Pandanwangi variety yielded 8,779 kg/ha. This yield was considerably higher than Ciherang variety tested with the same system which resulted in 7,367 kg/ha. Compared with conventional tile cropping system, systems of simultaneous rice cultivation and pisciculture Jajar Legowo and SRI in this experiment were proven to be able to increase rice yield. The increase ranged between 150 percent to 200 percent. Rice farmers who utilize SRI and Jajar Legowo cropping systems can reach similar increase in rice yield with one condition that they use right rice seeds, fertilizer, tillage system, and crop pest combating system. The highest rice yields from this research were obtained from tile 9 of Pandanwangi variety (11,563 kg/ha), which provided a net gain of Rp 34,417,000,-.