Agarwood (Aquilaria malaccensis, Aquilaria agallocha and related species) is one of the world's most valuable plantation tree crops, cultivated for its highly prized fragrant resin used in perfumes, incense, essential oils, pharmaceuticals and traditional medicines. In India, agarwood is primarily grown in Assam, Tripura, Meghalaya, Arunachal Pradesh, Nagaland, Mizoram, Manipur, West Bengal, Kerala and Karnataka. Successful agarwood cultivation depends on vigorous root development, healthy tree growth, balanced nutrition and effective disease and pest management before artificial or natural resin induction. Integrating biofertilizers, biofungicides and biopesticides into agarwood plantations improves soil fertility, enhances nutrient availability and naturally suppresses diseases and insect pests while promoting long-term plantation sustainability.

Beneficial microorganisms colonize the rhizosphere surrounding agarwood roots, improving soil biological activity, organic matter decomposition and nutrient cycling. Healthy microbial populations promote faster stem growth, stronger root systems, improved canopy development and greater tolerance to environmental stress.

Azotobacter fixes atmospheric nitrogen and continuously supplies biologically available nitrogen for vegetative growth. Phosphate Solubilizing Bacteria (PSB) convert insoluble phosphorus into plant-available forms, promoting vigorous root establishment and healthy sapling development. Potassium Mobilizing Bacteria (KMB) improve potassium availability, enhancing stem diameter, branch development, stress tolerance and overall tree vigour. NPK Microbial Consortia provide balanced nutrient mobilization throughout the tree growth cycle, resulting in healthier plantations and faster biomass accumulation.

Micronutrient-solubilizing microorganisms further improve plantation performance. Zinc Solubilizing Bacteria enhance chlorophyll formation, enzyme activation and photosynthetic efficiency. Sulphur Oxidizing Bacteria improve sulphur availability for protein synthesis and metabolic activity. Mycorrhiza (AMF) establish a symbiotic association with tree roots, greatly improving phosphorus uptake, moisture absorption and drought tolerance. Silicon Solubilizing Bacteria strengthen plant tissues, improve stress tolerance and increase resistance against harsh environmental conditions.

Agarwood plantations are susceptible to diseases such as Root Rot, Collar Rot, Damping-off (nursery), Stem Canker, Leaf Spot, Anthracnose, Dieback and Fusarium Wilt. These diseases reduce sapling survival, weaken tree growth and affect plantation productivity.

Beneficial microorganisms provide effective biological disease management. Trichoderma harzianum, Trichoderma viride and Trichoderma asperellum suppress soil-borne pathogens including Fusarium, Rhizoctonia, Pythium, Phytophthora and Sclerotium while stimulating root growth. Pseudomonas fluorescens functions as a plant growth-promoting rhizobacterium (PGPR), suppressing pathogens and activating systemic resistance. Bacillus subtilis produces natural antimicrobial compounds that inhibit fungal and bacterial pathogens. Pseudomonas putida and Streptomyces lydicus improve rhizosphere biodiversity and provide long-term biological disease suppression.

Major insect pests include Stem Borers, Bark Borers, Leaf-Eating Caterpillars, Termites, Scale Insects, Mealybugs, Aphids, White Grubs and Root-knot Nematodes. These pests reduce tree vigour, damage stems and roots and slow plantation development.

Beauveria bassiana effectively controls stem borers, caterpillars and other insect pests. Lecanicillium lecanii provides biological control of aphids, mealybugs and scale insects. Bacillus thuringiensis var. kurstaki (BTK) effectively controls leaf-feeding caterpillars and borer larvae. Metarhizium anisopliae suppresses termites, white grubs and other soil-dwelling insect larvae. Purpureocillium lilacinum and Pochonia chlamydosporia effectively reduce root-knot nematode populations, protecting feeder roots and improving nutrient uptake.

Microbial products applied through nursery treatment, pit application, drip irrigation, compost enrichment and periodic soil drenching establish beneficial microbial populations throughout the root zone. Combined with mulching, irrigation and balanced nutrition, biological crop management significantly improves nutrient-use efficiency, tree growth and long-term plantation health before resin induction.

---

Benefits of Biological Inputs in Agarwood

• Promotes rapid sapling establishment and root development
• Increases stem diameter and canopy growth
• Improves nutrient-use efficiency
• Enhances drought tolerance and stress resistance
• Improves long-term plantation health
• Suppresses major fungal and bacterial diseases
• Controls important insect pests naturally
• Reduces root-knot nematode infestation
• Improves soil fertility and beneficial microbial activity
• Produces vigorous trees suitable for premium agarwood resin production

---

Recommended Biofertilizers

• Azotobacter
• Phosphate Solubilizing Bacteria (PSB)
• Potassium Mobilizing Bacteria (KMB)
• NPK Microbial Consortia
• Zinc Solubilizing Bacteria
• Sulphur Oxidizing Bacteria
• Mycorrhiza (AMF)
• Silicon Solubilizing Bacteria

---

Recommended Biofungicides

• Trichoderma harzianum
• Trichoderma viride
• Trichoderma asperellum
• Bacillus subtilis
• Pseudomonas fluorescens
• Pseudomonas putida
• Streptomyces lydicus

---

Recommended Biopesticides

• Beauveria bassiana
• Lecanicillium lecanii
• Bacillus thuringiensis var. kurstaki (BTK)
• Metarhizium anisopliae
• Purpureocillium lilacinum
• Pochonia chlamydosporia

---

Recommended Application Program