POSITIVE PRODUCTS FOR CONTROL OF INSECT PESTS , DISEASES AND WEEDS IN RICE (Dr RK Wanjogu and CM Kambo) Presentation during the NIB / Collaborators research findings Workshop, Kenya School of Monetary Studies, 3rd to 4th July, 2014.

Introduction Rice (Oryzae sativa) is the third most important food crop in Kenya after maize and wheat National rice consumption is estimated at 400,000 metric tonnes Annual production range of 45,000 to 80,000 metric tonnes Low production is caused mainly by poor natural resource management And continuous monoculture leading to accumulation of, weeds, diseases and insect pests

PADDY FIELD

To evaluate the efficacy of 6 selected Insecticides against rice pests Objectives To evaluate the efficacy of 6 selected Insecticides against rice pests To evaluate the efficacy of 4 selected Fungicides against weeds paddy fields To evaluate the efficacy of 5 selected Herbicides against weeds paddy fields

Justification Target pests: Insect pests, diseases and weeds If uncontrolled, may cause upto 100% yield losses Evaluation of pest control products should be a continuous processes For effective pesticide resistance management insecticide screening is necessary

Materials and methods Field experiments : Conducted at MIAD Research Centre between 2012 and 2014 Rice variety, Basmati 370 was planted at a spacing of 15 cm x20 cm Plot size – 5m by 1 m : In RCBD with 4 replicates Treatments: 5 including, Local check & untreated control

Cypermethrin +Chlorpyrifos Example: East trap 4G Chemical name Active Ingredient (a.i.) Rate of Application per Ha East trap 4G Cartap Hydrochloride 10 kg 15 kg 20 kg Cyclone 505 EC Cypermethrin +Chlorpyrifos 1 L Untreated control Nil

Efficacy of East trap 4G against Rice pests Treatment Rate per ha Root borer Shoot borer Leaf folder Gall midge Untreated control 0 kg 1.79a (2.70) 0.84a (0.21) 0.97a (0.44) 0.79a (0.12) East trap 4G 10 kg 1.73ab (2.49) 0.82ab (0.17) 0.96ab (0.42) 0.77ab (0.09) 15 kg 1.76ab (2.60) 0.75ab (0.06) 0.76ab (0.08) 20 kg 1.74ab (2.53) 0.71b (0.00) 0.75b (0.06) Cyclone 505 EC 1 L 1.66b (2.26) 0.81ab (0.16 0.93b (0.36) LSD (p=0.05) - 0.13 0.04 p-value (0.05) 0.325 0.159 0.173 0.164 CV (%) 6.05 8.12 9.76 11.65

Recommendation East trap 4G at the rate of 15 kg to 20 kg per hectare effectively controlled the shoot borers, root borers, leaf folders and gall midges in rice fields. In addition, significantly more tillers were recorded in plots treated with East trap 4G at 20 kg ha-1 and Cyclone 505 EC 1.0 L ha-1 (Local check) as compared to the untreated control plots East trap 4G at 20 kg ha-1 recorded significantly taller plants as compared to the local check and untreated control plots Two season results: East trap4G at 15-20 kg ha-1 may be recommended for the control of shoot borers, root borers, leaf folders and gall midges in rice fields.

RICE STEM BORER

Cyperus difformis-weed

Monocharia vaginalis-weed

REPORTS SUBMITTED TO PCPB PRODUCT CLASS COMPANY SEASONS Engeo 247 SC Insecticide Syngenta 1 East trap 4G East African Business Co. Ltd. 2 Ochestra 50 EC Dipchem EA Ltd. Steward 0.3% GR Greenlife Crop protection Africa Ltd. Agromine 860 SL Herbicide Flair 50 EC Witness 52.5% WP Fungicide Amistar Top Sacrifido 125 EC

EFFICACY TRIAL IN PROGRESS PRODUCT CLASS COMPANY SEASONS Spectator Gold 50% EC Insecticide Greenlife Crop Protection Limited 1 Epitome elite 500 SP East African Business Exempo curve 250 SC Fungicide Greenlife Crop protection Africa LTD Defacto 500 EC Dipchem Breakdown 450 EC Herbicide Greenlife

Acknowledgement Director, KARI Managing Director-NIB NIB – MIAD staff Centre Director, KARI Mwea

Thank You BUTTERLIES