The tobacco aphid, Myzus persicae nicotianae is an economically important pest of tobacco, causing extensive yield losses especially as it is an important host of numerous viruses and the sudden shift from the green morph to the red morph is of concern as reports of insecticide resistance are...

The tobacco aphid, Myzus persicae nicotianae is aneconomically important pest of tobacco. Damage is throughdirect injury by sucking sap of infested plants as well asreduction of the quality of the leaf by leaving honey-dewwhich encourages the subsequent growth of sooty-mould. Inaddition to this,...

A study was carried out under greenhouse conditions to establish the role of substrate physical and chemical properties. Pine bark and coal rubble were mixed at 100, 75, 50, 25, and 0% by volume. A farmers’ standard practice (50% pine bark + 50% sand) was included as a control. The experiment...

Over a period of three years sulfentrazone, alone and in combination with other herbicides, was evaluated for weed control efficacy under various methods application. The trials were done in granite sandy soils after three years of Chloris gayana cv Katambora at Kutsaga Research Station,...

The tobacco aphid, Myzus persicae nicotianae is aneconomically important pest of tobacco. Damage is throughdirect injury by sucking sap of infested plants as well asreduction of the quality of the leaf by leaving honey-dewwhich encourages the subsequent growth of sooty-mould. Inaddition to this,...

The tobacco aphid, Myzus persicae nicotianae is aneconomically important pest of tobacco, causing extensiveyield losses especially as it is an important host of numerousviruses and the sudden shift from the green morph to the redmorph is of concern as reports of insecticide resistance arecommon...

A study was carried out under greenhouse conditions to establish the role of substrate physical and chemical properties. Pine bark and coal rubble were mixed at 100, 75, 50, 25, and 0% by volume. A farmers’ standard practice (50% pine bark + 50% sand) was included as a control. The experiment...

Over a period of three years sulfentrazone, alone and in combination with other herbicides, was evaluated for weed control efficacy under various methods application. The trials were done in granite sandy soils after three years of Chloris gayana cv Katambora at Kutsaga Research Station,...

Faced with climate change one way of adaptation is to reach into the genetic resource of the so-called miner crops. These crops are thought to be more resilient to climate change while being more nutritious than the modern vegetables. It is vital to characterise these crops in order to gather...

Field studies were done to compare a wettable granular formulation (Authority 75 WG) and a suspension concentrate formulation (Authority 48 SC) of the herbicide sulfentrazone. A 6 x 2 factorial experiment was laid out in a split plot design to evaluate the effect of herbicide levels on...