The growing demand of quality organic tea with increase in awareness on the deleterious effect of
chemicals and its residue in human health has revived the need of organic tea management. Field
experiments were conducted in 2006/2007 to 200712008 in flam and Dhankuta districts to study the
effect of di.fferent organic sources of nutrients and pest management on Orthodox tea cv. Gumti
Selection. In addition to productivity, the effect of nutrients on green leaf production trend,
plucking intervals in di.fferent months and changes in composition of soil in the experimental plots
were also studied Four di.fferent organic sources of nutrients; vermi compost, azatobacter
incorporated commercial organic fertilizer, improved ditch compost with EM. traditionally made
compost and di.fferent organic plant protection methods; enanthole, parasitic fungi Trichoderma
viride, mineral oil for management of blister blight disease and locally made botanical pesticide,
mineral oil and ultineem for management of thrips were tested separately in a Randomized
Complete Block Design (RCBD) with seven replications. The effect of different organic sources of
nutrients was found significant on green tea leaf production. In both districts, highest production of
green tea leaves was recorded in plots with azatobacter incorporated fertilizer and least informers'
traditional compost in both years. The result showed green leaf production of 3125 and 3031
kg/hac in 12-15 year old plantation and 1822 and 1798 kg/hac in 8-10 year old plantation with
yearly application of 495 gmlbush of azotobacter incorporated fertilizer. Di.fferent organic
treatments did not di.ffer significantly in the severity of blister blight disease. However, lowest
infestation was observed in plots with Trichoderma application. Leaf damage percentage was found
significantly lower in treatments other than control in both districts. The effect of organic thrips
management was significantly di.fferent in green tea leaf yield. Non significant changes in soil
chemical properties due to organic nutrients were found among the treatments. However, small
incremttnl in nitrogen and potassium contenl over the time was observed.

The growing demand of quality organic tea with increase in awareness on the deleterious effect of
chemicals and its residue in human health has revived the need of organic tea management. Field
experiments were conducted in 2006/2007 to 200712008 in flam and Dhankuta districts to study the
effect of di.fferent organic sources of nutrients and pest management on Orthodox tea cv. Gumti
Selection. In addition to productivity, the effect of nutrients on green leaf production trend,
plucking intervals in di.fferent months and changes in composition of soil in the experimental plots
were also studied Four di.fferent organic sources of nutrients; vermi compost, azatobacter
incorporated commercial organic fertilizer, improved ditch compost with EM. traditionally made
compost and di.fferent organic plant protection methods; enanthole, parasitic fungi Trichoderma
viride, mineral oil for management of blister blight disease and locally made botanical pesticide,
mineral oil and ultineem for management of thrips were tested separately in a Randomized
Complete Block Design (RCBD) with seven replications. The effect of different organic sources of
nutrients was found significant on green tea leaf production. In both districts, highest production of
green tea leaves was recorded in plots with azatobacter incorporated fertilizer and least informers'
traditional compost in both years. The result showed green leaf production of 3125 and 3031
kg/hac in 12-15 year old plantation and 1822 and 1798 kg/hac in 8-10 year old plantation with
yearly application of 495 gmlbush of azotobacter incorporated fertilizer. Di.fferent organic
treatments did not di.ffer significantly in the severity of blister blight disease. However, lowest
infestation was observed in plots with Trichoderma application. Leaf damage percentage was found
significantly lower in treatments other than control in both districts. The effect of organic thrips
management was significantly di.fferent in green tea leaf yield. Non significant changes in soil
chemical properties due to organic nutrients were found among the treatments. However, small
incremttnl in nitrogen and potassium contenl over the time was observed.