Application of ameliorant and microbials fertilizer as bioagent for enhancing the health of rhizomicrobiome and yield of soybean on marginal soils ecosystem

Abstract

The sustainability of agricultural production depends on the health of soils ecosystem and soil properties. Rhizomicrobiome act as external digestive organs of the plant plays a magnificent role for enhancing the nutrient availability, soil health and plant growth on marginal soils. The intensive use of agrochemical such as inorganic fertilizers has accelerated the soil health degradation and inefficiency of fertilizers use. Bioameliorant or bioagent containing activated carbon, organic extract, humic substances and beneficial rhizobacteria was developed and formulated as soil conditioner and microbial fertilizer for improving the soil properties and increasing the microbial population in rhizosphere microbiome (rhizomicrobiome) and as well as to increase the yield of soybean. The experiment was set up as randomized block design, consisted of 7 treatments (0, 4, 8, 12, 16 kg ha−1 of bioagent, 1 ton ha−1 dolomite and 1 ton ha−1 manure) and provided with 4 replications. The chemical properties (organic carbon, pH and CEC), beneficially bacterial population in rhizomicrobiome (Azospirillum sp., Pseudomonas sp. and Bacillus sp.) and soybean grain yield were significantly increased by the low dosage application of organic bioagent. Application of 8-12 kg ha−1 of bioagent had increased the grain yield of soybean significantly (about 47.5-51.1% higher than control). The obtained yield was not different significantly either with application 1 ton ha−1 dolomite or 1 ton ha−1 organic manure. Consequently, application of 8-12 kg ha−1 of bioagent can be recommended to substitute the use of conventional ameliorant and to enhance the bacterial biodiversity in rhizomicrobiome for increasing the soil health and soybean yield.

Effects of soil ameliorant composition on soil properties and chili (Capsicum annuum L.) yield in inceptisols Jatinangor

“…The activity and the biodiversity of microbe in rhizosphere correlated with the roots growth and supply of organic carbon or roots exudate. Moreover, the domination and high activity or biodiversity of N-fixer or PSB as biofertilizers or as plant growth promoting rhizobacteria (PGPR) in soils will improve the nutrients status and phytohormone production for supporting the plant growth (Simarmata et al, 2019).…”

Inokulan Rhizobakteri untuk Meningkatkan Kelimpahan Mikroba Tanah, Klorofil dan Pertumbuhan Bibit Kelapa Sawit pada Inceptisols

“…PGPR mampu menghasilkan hormon auksin (IAA), giberelin, dan sitokinin. Kehadiran mikroba tersebut pada rhizosfir tanaman juga berperan sebagai perlindungan biologi bagi tanaman (bioprotector) (Setiawati et. al., 2019;Pratiwi et.…”

“…Dibandingkan populasi bakteri awal (3,68 x 10 8 CFU g -1 ) terdapat kenaikan populasi bakteri sekitar 88%. Pemberian amelioran sebagai pupuk dasar dan eksudat mampu meningktakan aktivitas dan populasi pada rhizosfir (Simarmata et al, 2019;Syarifain et. al., 2019).…”