INTERVAL EFFECT OF THE USE OF TOBACCO EXTRACT (NICOTIANA TABACUM) AS A GROWTH REGULATOR (GPR) ON THE GROWTH AND HARVEST OF RICE (ORYZA SATIVA) INPARI 32 VARIETY
Rice (Oryza sativa) is the main food crop that is widely cultivated in Indonesia. However, the rice production has not been able to meet the people's needs for rice. According to BPS East Java (2015), the decline in rice production in Java was due to a decrease in productivity of 0.17 kw / h...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/50205 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Rice (Oryza sativa) is the main food crop that is widely cultivated in
Indonesia. However, the rice production has not been able to meet the people's
needs for rice. According to BPS East Java (2015), the decline in rice production in
Java was due to a decrease in productivity of 0.17 kw / ha (0.33%). One of the ways
to increase the productivity of rice is the use of external compounds such as growth
regulators or phytohormones which function to influence the growth, development
and movement of plant taxis by stimulating or changing them. One of the plants
that can be used is tobacco. Apart from functioning as biopesticides, tobacco plants
also have the potential to be used as growth regulators because they contain
allelopathic substances, organic materials and other phenolic compounds that can
affect plant growth, especially the production of the hormone gibberellin and
anthesin at the right application intervals. This study aimed to determine the effect
of the interval of tobacco extract application on the growth and yield of rice plants
of Inpari 32 variety. The study was conducted in a randomized block design (RBD)
with 4 treatment intervals, namely control (F0), once a week (F1), once every two
weeks. (F2), and every three weeks (F3). Tests were analyzed using One-Way
ANOVA at the 5% level and continued with the DMRT test. The variables observed
included plant height, number of leaves, number of tillers, growth rate,
phytohormones (IAA and GA3), flowering age, harvesting age, shoot and root dry
weight, shoot-root stover ratio, 1000 grain weight, ratio of pithy grain to total grain,
grain weight per hill, grain weight per plant, and productivity (tonnes / ha). The
results showed that the application interval treatment had a significant effect on the
number of leaves and the treatment interval for the application of tobacco extract
once a week (F1) showed a trend towards better results.
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