Faculty of Agriculture Environment and Food Systems e-Theses Collection: Recent submissions
Now showing items 61-80 of 105
-
Factors affecting perceptions and responsiveness to climate variability induced hazards.
(2013-06-04)Smallholder farmers are heterogeneous in terms of resource endowments, production orientation and access to markets. An understanding of these factors and how they influence local perceptions and responsiveness to climate ... -
Manure Management Options for increasing Crop Production in the Small Holder Sector of Zimbabwe.
(2012-09-10)Cattle manure available to farmers is of low value as a fertilizer N and generally contains less than 1% N, which cannot sustain N requirements for high yielding crops like maize. The purpose of the study was to develop ... -
Effects of cotton-cowpea intercropping on crop yields and soil nutrient status under Zimbabwean rain-fed conditions
(2012-09-03)Intercropping of cotton and cowpea is one of the ways to improve food security and soil fertility while generating and maintaining cash income of the rural poor. A study was carried out to find out the effects of cotton-cowpea ... -
Population dynamics and management response of Nitrogen-fixing indigenous legumes for soil fertility restoration in smallholder farming systems of Zimbabwe
(2012-09-03)The main problem undermining food security in most smallholder farming systems in Zimbabwe is the limited range of alternative nutrient resources for a wide range of farmers and soils. This study was initiated to investigate ... -
The Effects of Improved Fallows and Tillage Management on Soil and Water Conservation in a Sandy Soil.
(2012-09-03)Research on improved fallows has concentrated on soil fertility benefits neglecting possible benefits to soil and water conservation. The objective of this study was to determine changes in infiltration rates, water and ... -
Tolerance of Selected Maize (ZEA MAYS L.) and Soyabean (Glycine Max L. Merr.) Cultivars to Soil Acidity
(2012-09-03)Soil acidity is the most important growth-limiting factor especially in the tropics and sub-tropics. Increased acidity in Zimbabwe’s smallholder agricultural soils has been attributed to use of acidifying fertilizers without ... -
Evaluation of Draught Animal Power Systems for Maize and Cotton Production at Smallholder-Farmer Level in Masvingo Province.
(2012-08-30)An evaluation of smallholder draught animal power systems was conducted in six study areas in Masvingo and Chivi districts of Masvingo province over two seasons 1999-2000 and 2000-2002. The objective was to investigate the ... -
“ Heterosis, Combining ability and Tester Identification of CIMMYT maize (Zea Mays L) adapted to low N conditions
(2012-08-30)The production of high yielding single cross maize testers with good combining ability and the potential to discriminate materials under evaluation across diverse environments, is important in breeding programs. Testers ... -
Adaptability of Soyabean (Glycine max (L). Merr) varieties to intercropping under leaf Stripped and Detasselled maize (Zea mays L.)
(2012-08-30)Intercropping of maize (Zea mays L.) and soybean (Glycine max (L). Merr) is becoming a common practice among smallholder farmers but soybean is sensitive to shading resulting in yield decline. A research study to evaluate ... -
Relationship of molecular genetic distance of seven quality protein maize (Zea mays L.) inbred lines with specific combining ability and grain yield of hybrids
(2012-08-30)Quality protein maize (QPM) with the opaque-2 gene has double the amount of the essential amino acids (tryptophan and lysine) as compared to normal endosperm maize but the gene is associated with undesirable agronomic ... -
Genotype X Environment Interaction Effects on the Developmental Time, Kernel Modification and Yield of Experimental Quality Protein Maize (Zea mays L.) hybrid Varieties
(2012-08-30)Genotype „e environment interactions occur in crops grown in more than one environment such that it is unusual for a single genotype to perform better than other genotypes at all the locations in which they are grown posing ... -
Effects Of Grain Legume Species And Cowpea ( Vigna unguiculata L. Walp ) Populations On Witch Weed ( Striga asiatica L. Kuntze ) Phenology In The Smallholder Farming Sector Of Zimbabwe
(2012-08-30)Two on-farm experiments were conducted in Eastern Zimbabwe`s Chinyika Resettlement Area (180 02" and 180 17" S and 320 09" and 320 24" E), during 2002/2003 rainy season, to evaluate the effects of three grain legumes ... -
Characterisation, Epidemiology and Control of Scab on Protea Spp. Caused by Elsinoe Spp. (Anamorph Sphaceloma Protearum).
(2012-08-30)Protea scab, a commercially important disease of Protea spp., is discernable by raised, circular to oval, red – black leaf and stem lesions, which distort young plant growth. The causal agent was determined to be Sphaceloma ... -
Effects of Foliar Fertilizer Application during the Seed filling period on Soyabean (Glycine Max (L) Merr.) Grain Yield and Seed Quality
(2012-08-30)One major factor that prevents widespread adoption of soyabean (Glycine Max (L) Merr.) has been attributed to low yields. A research study focusing on the development of technologies to increase soyabean productivity and ... -
Assessing the Effectiveness of Soil Solarization for the Control of Soilborne Plant Pathogens and Weeds.
(2012-08-30)A field experiment was carried out at the Department of Crop Science, University of Zimbabwe in the 2003/2004 season to investigate the effectiveness of solarization on the control of soilborne plant pathogens and weeds. ... -
The Search for Molecular Markers, Parental Characterisation and inheritance Studies of Witchweed [Striga Asiatica (L.) Kuntze] Resistance in Sorghum [Sorghum Bicolor (L.) Moench].
(2012-08-30)Sorghum [Sorghum bicolor (L.) Moench] is ranked the third most important cereal crop in Zimbabwe, after maize and wheat. The major biotic constraint to sorghum production by resource poor farmers (RPFs) is attack by the ... -
Evaluating Hybrid-Maize Simulation Model for Grain Yield Estimation in Hybrid Seed Maize Production
(2012-08-30)The study was carried out to determine the effect of Male Planting Date (MPD) and Female Plant Population (FPP) on the Grain Yield (GY), yield components and flowering of a three-way hybrid. The study also evaluated ... -
Genetic variability, host specificity and resistance in Striga Asiatica-host plant interactions
(2012-08-30)Genetic analyses were conducted on Striga asiatica populations collected from different host species and geographic areas throughout Zimbabwe. These collections had been suspected to differ in their virulence, leading to ... -
Evaluation and characterisation of twenty-two Soyabean [Glycine max (L) MERRILL] lines under rust infested and non-infested conditions
(2012-08-30)Soyabean [Glycine Max (L) Merril] is an important leguminous crop, mainly used for human nutrition and livestock feed, as well as improving soil. The major constraint or threat to soyabean production is soyabean rust, a ... -
Assesment of Sustainability of Different Populations of Stemborer Species for the Development of Cotesia Flavipes (Hymenoptera: Braconidae) and the Establishment of the Latter in Zimbabwe.
(2012-08-30)Maize and sorghum are very important crops in Zimbabwe. They are, however, attacked by several pests, among them stemborers. Host suitability studies using Cotesia flavipes Cameron (Hymenoptera: Braconidae) against Chilo ...
