John Wanyoko

Effect of Plant Density and Nitrogen Fertilizer Application Rates on Nutrient Content of Clonal Tea Leaf

Kibet Sitienei, Kiplangat Kirui, David K amau, John Wanyoko & Kimutai Langat · International Journal of Plant & Soil Science · 2016

Trial on plant density which started in 1990 has revealed that in clonal tea, yield significantly increased with decrease in plant population density (ppd), with the highest ppd showing significantly lower yield than all the other ppd. However, this effect was opposite when the t...

Open access Research Article 10.9734/IJPSS/2016/24680

Efficacy and Mode of Application of Local Beauveria bassiana Isolates in the Control of the Tea Weevil

Evelyn Cheramgoi, Fred M. E. Wanjala, Vincent Sudoi, John Wanyoko, Lizzy Mwamburi & Robert Nyukuri · Annual Research & Review in Biology · 2016

The tea crop in Kenya ubiquitously is exposed to biotic and abiotic stresses which can be devastating. This includes damage by five species of tea weevils. Tea weevils reported to occur in Kenya include, the Tea Root Weevil (Aperitmetus brunneus) [Hust], Nematocerus Weevil (Nemat...

Open access Research Article 10.9734/ARRB/2016/23235