Kenya Study - Effects of Biostimulant AN

National Agricultural Research Laboratory, Kenya (2011)

Applications markedly increased populations of bacteria, actinomycetes, and fungi in all soils. Microbial activity also increased in all soils. Therefore, use for crop production in Kenya can be beneficial, especially when applied in combination with manure or (in)organic fertilizers to maximize benefits.

These findings align with research in Nigeria showing a positive, significant increase in tomato yield. Treatments combining the biostimulant with (in)organic NPK, compared with single doses of either the biostimulant or NPK, delivered the best flowering and fruit yield.

Reference: Effect of Biostimulant AN (Algifol) biofertilizer on yields of pumpkins and tomatoes and on microbial dynamics under greenhouse conditions, 2011 — C. N. Kibunja, E. M. Irambu, E. G. Thuranira, E. M. Kitonyo, and S. W. Maingi.

Horticultural Observations

Effects

Foliar applications supply plants with microelements, polysaccharides, and plant hormones through the leaf membranes, stimulating the plant’s immune system. This promotes the formation of protective compounds that combat pathogens and strengthen plant resilience.

Applications

• Apply 1 L/ha per hectare, diluted in your usual spray volume.
• After bud break.
• Four weeks later.
• Six weeks before harvest.
• Additionally whenever plants face stress such as heat, drought, or pest pressure.

Field experience shows that orchard trees respond particularly well to two applications of 0.5 L/ha, 14 days apart, applied in the morning or evening.

Spring frost spraying

Prophylactic application upon frost warnings, preferably within 24 hours; repeat 10 days after the frost event.

Autumn spraying

Apply 2–4 weeks before leaf fall. The sap enriched with minerals and trace elements retracts from leaves into woody tissues and is available at spring bud break.

Results

• Natural growth; resilient plants with firm, green leaves.
• Enhanced cytokinin production increases tolerance to morning frost in spring.
• Reduced excessive evaporation on hot days improves protection during drought.
• Improved natural flavor; fruits are more aromatic with yield increases.
• Longer freshness and storability.