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 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...

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...

In this study we examined the impact on soil C, total soil N and available P of six rotations namely: long season tobacco cultivar ‘KM10’ grown continuously (ContKM10), medium season tobacco cultivar ‘RK8’ grown continuously (ContRK8), grass-grass-grass-KM10 (G-G-G-KM10),...

Field studies were done to compare the weed control efficacy of 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...

In a long term study the effects of a nematicide and six rotations: root-knot-susceptible tobacco, Nicotiana tabacum L. cv.„KM10‟ grown continuously (ContKM10), root-knot-resistant tobacco cv. „RK8‟ grown continuously (ContRK8), grass-grass-grass-KM10 (G-G-G-KM10), grass-grass-grass-RK8...

The tobacco aphid, Myzus persicae nicotianae is an economically important pest of tobacco. Damage is through direct injury by sucking sap of infested plants as well as reduction of the quality of the leaf by leaving honey-dew which encourages the subsequent growth of sooty-mould. In addition to...