THE SYNERGY EFFECT OF APPLICATION OF PGPR (AZOTOBACTER CHROOCOCCUM) AND BIOSAKA ELICITOR ON VARIATIONS IN NPK FERTILIZER APPLICATION ON GROWTH RATE AND OUTPUT OF COMMON BEAN PLANT (PHASEOLUS VULGARIS)
Common bean (Phaseolus vulgaris) a vegetable that provides protein, vitamins, and secondary metabolite compounds that are beneficial to the body. Nevertheless, the productivity of common bean in Indonesia remains comparatively poor as a result of farming methods that continue to rely on synthetic...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/83017 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Common bean (Phaseolus vulgaris) a vegetable that provides protein, vitamins,
and secondary metabolite compounds that are beneficial to the body. Nevertheless,
the productivity of common bean in Indonesia remains comparatively poor as a
result of farming methods that continue to rely on synthetic chemical fertilizers.
Synthetic chemical fertilizers have the potential to harm the structure of soil, are
costly, and their accessibility is becoming more limited. The simultaneous
utilization of organic matter (compost) and limited amount of synthetic chemical
fertilizers can yield a beneficial impact on nutrient equilibrium and soil
productivity. Common bean productivity can be enhanced in terms of both quality
and quantity by employing elicitors and PGPR. It is well-established that biosaka
elicitors can decrease the reliance on synthetic chemical fertilizers by as much as
90%. PGPR (plant growth promoting rhizobacteria) is a type of biological microbe
that has the ability to enhance plant development, increase plant production, and
improve the fertility of land. The objective of this study was to investigate the impact
of the application of PGPR A. chroococcum, the application of biosaka elicitor at
the variation in the concentration of NPK fertilizer on the growth and yield of bean
plants. This study employed a Randomized Group Design (RAK) with two
components. Factor I involves the utilization of PGPR, which is divided into two
levels: A0: without PGPR and A1: with PGPR. Factor II involves the use of NPK
fertilizer along with a biosaka elicitor. There are four levels in this factor: P0
(without biosaka elicitor + without NPK), P1 (biosaka elicitor + 0% NPK), P2
(biosaka elicitor + 50% NPK), and P3 (without biosaka elicitor + 100% NPK).
Common bean seeds underwent biopriming by treating them with a suspension of
A. chroococum (108 CFU/ml) for a duration of 4 hours, while also subjecting them
to agitation. The plants were treated with NPK fertilizer at 1 MST, 4 MST, and 7
MST. The Biosaka elicitior was administered as a mist at a dosage of 5 mL/16 L
every 5 days. Planting of common bean seeds was carried out until the harvest
period of 10 weeks after planting (WAP). The results showed that the application
of biosaka elicitor, NPK fertilizer concentration (0%, 50% and 100%), and seed
biopriming increased the growth and yield of chickpea (Phaseolus vulgaris).
Biopriming treatment with PGPR A. chroococcum (A1) gave the best results on
growth and yield variables of common bean plants. The population of
microorganisms in the planting media has increased at the end of planting, and this
increase has a direct correlation with the growth and yield factors of common bean
plants. Utilizing biosaka elicitor and biopriming with PGPR A. chroococcum has
been found to optimize plant growth and yield in common bean cultivation. This
approach offers a more environmentally friendly and cost-effective by reducing the
usage of synthetic NPK fertilizer by 50% compared to the current standard |
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