Papers by Prof. Upenyu Mazarura
Asian Journal of Agriculture and Rural Development, 2013
Over a period of three years sulfentrazone, alone and in combination with other herbicides, was e... more 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, Zimbabwe. The chemicals were sprayed using a knapsack or a tractor mounted boom. Incorporation after ridging
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Asian Journal of Agriculture and Rural Development, 2013
A study was carried out under greenhouse conditions to establish the role of substrate physical a... more 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 was made up of three blocks and six treatments
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Asian Journal of Agriculture and Rural Development, 2012
In this study we examined the impact on soil C, total soil N and available P of six rotations nam... more 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), grass-grass-grass- RK8 (G-G-G-RK8), KM10-Crotalaria juncea (KM10-Cr) and RK8-Crotalaria juncea (RK8-Cr). The experiment was established in 1990 under irrigation on a sandy loam
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Asian Journal of Agriculture and Rural Development, 2013
Field studies were done to compare a wettable granular formulation (Authority 75 WG) and a suspen... more 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 phytotoxicity and residues in both leaves and the soil. One rate of the
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Asian Journal of Agriculture and Rural Development, 2013
Field studies were done to compare the weed control efficacy of a wettable granular formulation (... more 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 the two herbicides on the weed control efficacy in tobacco. The
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Asian Journal of Agriculture and Rural Development, 2013
The tobacco aphid, Myzus persicae nicotianae is an economically important pest of tobacco, causin... more 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 common in this morph. The efficacy of several insecticides was studied, both
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Papers by Prof. Upenyu Mazarura