Abstract
This study aimed to obtain the composition of biochar as a soil enhancer and mycorrhizal dose, which affected the nutrient uptake of cayenne plants. This experimental research was based on a separate plot design (RPT) with a basic randomized block design (RCBD). The main plot experiment was vesicular-arbuscular mycorrhiza or VAM (m) with three levels: mycorrhiza 10 g/plant (m1), mycorrhiza 15 g/plant (m2), and mycorrhiza 20 g/plant (m3). The subplot is biochar composition as soil enhancer (b) with three types: biochar husk 50%+25% soil+25% sand (b1), 50% sand+25% soil+25% biochar wood (b2), and wood charcoal biochar 50%+soil 25%+biochar charcoal husk 25% (b3). Each level of the VAM doses factor is combined with biochar. These nine treatment combinations and the levels were repeated thrice, accounting for 27 experimental units. The results showed that the parameters of phosphorus uptake, potassium uptake, and fresh root weight had a positive and significant relationship to the percentage of mycorrhizal infections. The combination treatment of mycorrhiza 20 g/plant and the composition of 50% husk biochar+25% soil+25% sand, 15 g mycorrhizal dose treatment with 50% wood biochar+25% soil+25% biochar rice husk and 20 g/plant are the best treatment as a planting medium.
Highlights
The Capsicum frutescens L plant has a high economic value due to extensive utilization in the food industry or consumption in small households
It shows whether it is statistically different from the mycorrhizal, biochar, and combination of mycorrhizal and biochar effects toward the canopy and dried fresh root weight parameters, dried canopy and root weight, and N, P, K absorption, mycorrhizal population, and percentage of mycorrhizal infections
The biochar has a function to retain moisture so that it helps plants in times of lack of water and nutrient retention in the soil so that nutrients present in the soil are avoided from the washing process and will affect the increase in plant growth (Lehmann et al 2003)
Summary
The Capsicum frutescens L (cayenne) plant has a high economic value due to extensive utilization in the food industry or consumption in small households. This high food demand is due to an increased population. When the agricultural sector has not been able to meet all demands, so, in the future, expansion of the area and intensification of agriculture is necessary (Mulyani and Agus 2017). To overcome this problem, utilizing narrow land requires alternative technology, one of which is planting cayenne in a pot to facilitate growth and yield observation.
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