Intercropping red rice genotypes with mungbean and application of mycorrhiza-biofertilizer to increase rice yield with reduced inorganic fertilizer doses

• Main Authors: Wangiyana, Wayan, Aryana, I. G. P. M., Dulur, N. W. D.
• Format: Conference Proceeding
• Language: English
• Subjects: Agricultural production; Beans; Crop yield; Fertilizers; Grain; Irrigation; Irrigation systems; Legumes; Rice
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0116676

Mycorrhiza-biofertilizer and intercropping with legume crops have been proven to increase yield of various crops. Growing rice under aerobic irrigation system has an advantage to intercrop rice with legume crops. The objective of this study was to examine whether application of organic and mycorrhiza-biofertilizer with reduced doses of inorganic fertilizer can increased yield of two amphibious red-rice genotypes intercropped with mungbean under aerobic irrigation system. The experiment was arranged with Split Split-Plot design with three blocks and three treatment factors, namely red-rice genotypes (AM-G4, AM-G10) as the main plots, intercropping (I0= monocrop; I1= rice+mungbean intercropping) as the subplots, and application of organic combined with mycorrhiza-biofertilizer (F1= NPK only, F2= NPK+organic fertilizer, F3= 60%NPK+organic+mycorrhiza-biofertilizer) as the sub-subplots. The results indicated that additive intercropping with mungbean and fertilizer combinations significantly affected several growth and yield components of the red-rice while both genotypes were different only in tiller number and percentage of unfilled grains. However, there were also significant interaction effects, i.e. F*I interaction on panicle number, filled-grain number and grain yield per clump, and F*I*G interaction on percentage of unfilled grains. Additive intercropping with mungbean and addition of organic (F2) and/or mycorrhiza-biofertilizer combined with only 60% NPK doses (F3) on average significantly increased red-rice grain yield compared with application of NPK only (F1), which means that addition of organic and biofertilizer was still capable of increasing red-rice yield although the NPK doses were reduced by 40%. However, under intercropping, red-rice grain yield was 59.99 g/clump (highest) in F3 treatment compared with 40.37 g/clump in F1 treatment, while under monocropped rice, grain yield was 38.50 g/clump with F3 treatment compared with only 24.12 g/clump (lowest) with F1 treatment. Therefore, additive intercropping with mungbean increased red-rice grain yield and application of organic and mycorrhiza-biofertilizer further increased grain yield of red rice under aerobic irrigation systems.