153 research outputs found
Maize response to chemical and microbial products on two Tanzanian soils
Open Access JournalLow soil fertility has been a major factor to low maize yields in smallholder farms in sub-Saharan Africa. Technologies have been proposed including inorganic, fertilizers and plant growth promoting microorganisms. A study was conducted under greenhouse and field conditions to evaluate the effects of liquid inorganic fertilizer and microbiological products on growth, nutrient uptake and yield of maize. Products evaluated were Teprosyn (nitrogen, zinc phosphorus), BioSoil Crop Booster (BSCB) (Pseudomonas fluorescens), and Bio Soil Nitro plus (BSN+) (Acetobacter sp.). Treatments were: products alone (low and high rate), product + half rate phosphorus (10 kg P ha-1), half rate P, full rate P (20 kg P ha-1) and Control. All products were analysed for quality. None of the products met the label claims in nutrient/organism concentration. An increase of biomass was observed in the greenhouse for half rate P + BSCB low rate and high rates for BSCB and BSN+ compared to Control. Half rate P + BSN+ low rate gave the highest grain yield which was similar full rate nitrogen and P. BSCB and BSN+ at low rates with P half rate resulted in an increase in biomass yield in the greenhouse. Efficacy of low rate BSN+ + half rate P was demonstrated when applied at the recommended rates and combined with half rates of N and P. A package of inorganic and Bio-fertilizers should be developed based on soil fertility status, and the quality of the inputs verified to ensure that they are conform to the label guarantee analysis
Land use and land evaluation research project
Compilation gives preliminary results and partly processed
data of some agriculturally important areas including Sukumaland; Mtwara and
Sumbawanga.Land use and land evaluation research work was initiated in the Department
of Soil Science of Sokoine University of Agriculture (SUA) in collaboration with
the Center for African Area Studies (CAAS) and Faculty of Agriculture of Kyoto
University and the National Soil Service (NSS). This research project is funded
through the Japan International Cooperation Agency (JICA).
Among the objectives of this research project is the development of a
computer-based land evaluation system specific to and using data from Tanzania.
To achieve this goal, the approach has been to direct studies on the major agroecological
zones of the country. Lots of data on soils, crops and climates have
been and continue to be generated (Kimaro et al., 1993; Magoggo et al., 1993)
based on the concepts elaborated in the original research write-up on land use
and land evaluation systems research (Msanya et al., 1991). Recently the trend
has been to store these data in such a way that they can easily be retrieved by
various users.
This current compilation gives preliminary results and partly processed
data of some agriculturally important areas including Sukumaland; Mtwara and
Sumbawanga.Japan International Cooperation Agenc
Clay mineralogical composition and its influence on some physico-chemical properties of selected soils of Coast region, Tanzania
ArticleA mineralogical study was carried out in
Coast Region, Tanzania, on soils developed
from different parent materials. These
materials are; unconsolidated sands and
gravels of Neogene age, Grey-green marls
of Cretaceous age, Calcareous silt stone and
sandstone of Jurassic age and migmatitic
gneisses of Precambrian age (Usagaran system).
The soil clay fractions exhibit pertinent
differences in mineralogical composition.
Soils developed from migmatitic
gneisses are predominantly kaolinitic with
accessory amount of goethite. Kaolinite in
these soils is pedogenic and is formed from
feldspars and mica. Soils formed from calcareous
siltstone and sandstone have
mixed clay mineralogy including smectite,
vermiculite and illite. Both smectite and
vermiculite in these soils are pedogenic
and are formed from mica, while illite is
inherited from the parent materials. Soils
developed from the grey-green marls are
dominated by smectite and have some
accessory amounts of kaolinite and illite;
while those developed from tertiary sediments
are characterized by mixed clay
mineralogy including smectite, kaolinite
and traces of gibbsite. The pedogenic environment
suggests that both kaolinite and
smectite in these soils are not formed insitu
but are inherited from transported parent
materials. The clay mineralogy is clearly
reflected on the cation exchange capacity,
moisture retention characteristics and carrying
capacity (n value) of these soil
Feasibility study for production of Paprika nd Marigold flowers in Mapinga farm, Bagamoyo District, Tanzania
Consultant Report prepared for Mapinga farmMs. Rose J.
Lyim
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