Agronomy Research Papers/Topics

Use of time series normalized differencevegetation index (NDVI) to monitor fall armyworm(Spodoptera frugiperda) damage on maizeproduction systems in Africa

Abstract: Fall armyworm (FAW)Spodoptera frugiperda(J.E. Smith), damagewas monitored at a regional scale using time series data inWestern and Southern African countries. The study employed thenormalized difference vegetation index (NDVI) computed fromLandsat 8 imagery using the Google Earth Engine (GEE) usingimage composites for the years 2013 to 2020 for the study areas.The index was then reclassified based on the NDVI threshold val-ues into low, sparse, moderate, and dense classes. FAW prev...

Black Soldier Fly-Composted Organic Fertilizer Enhances Growth, Yield, and Nutrient Quality of Three Key Vegetable Crops in Sub-Saharan Africa

Abstract: Worldwide, French beans (Phaseolus vulgarisL.), tomato (Solanum lycopersicumL.), andkales (Brassica oleraceaL.var. acephala) are considered economically important foodcrops. There is a rapid decline in their yield due to severe soil degradation. Thus, highcommercial fertilizer inputs are crucial, though they remain expensive and inaccessibleto resource poor farmers. We investigated the comparative performance of compostedblack soldier fly frass fertilizer (BSFFF), conventionallycom...

Color calibration of proximal sensing RGB images of oilseed rape canopy via deep Learning combined with K-Means algorithm

Abstract: Plant color is a key feature for estimating parameters of the plant grown under different conditions using remote sensing images. In this case, the variation in plant color should be only due to the influence of the growing conditions and not due to external confounding factors like a light source. Hence, the impact of the light source in plant color should be alleviated using color calibration algorithms. This study aims to develop an efficient, robust, and cutting-edge approach f...

Evaluation of Various Mulberry Morus spp. (Moraceae) Cultivars for the Rearing of the Bivoltine Hybrid Race Shaanshi BV-333 of the silkworm Bombyx mori (Lepidoptera: Bombycidae)

Abstract: The performance of the Bombyx mori Linnaeus bivoltine hybrid, Shaanshi BV-333, was evaluated on six mulberry cultivars of Morus spp. based on economic characters in rearing and mulberry leaf quality. The growth rate and morphological characteristics for all the cultivars were studied using several parameters. Specific characters such as disease resistance, survival percentage, cocoon weight, cocoon shell weight and single cocoon filament length were recorded during the rearing of s...

Integrated management of Striga hermonthica and cereal stemborers in finger millet (Eleusine coracana (L.) Gaertn.) through intercropping with Desmodium intortum

Abstract: We evaluated the potential role of greenleaf desmodium, Desmodium intortum (Mill.) Urb., in the combined management of Striga hermonthica and cereal stemborers in finger millet (Eleusine coracana (L.) Gaertn.) in western Kenya between 2007 and 2008. Treatments comprised finger millet planted either as monocrop stands or intercropped with D. intortum. S. hermonthica counts were significantly lower in the intercrop than in the monocrop plots. Similarly, multi-season analyses showed t...

Adaptation options of small-scale Farmers to the Climate change impacts in aAgeyo-Setema Area, Jimma Zone, SouthWestern Ethiopia

Abstract: Climate change is a key emerging threat to the lives and livelihoods of smallholder farmers in Ethiopia. This study examines small-scale farmer adaptation strategies to climate change and climate variability, and the factors affecting adaptation choice inJimma, Southwestern Ethiopia. This research used a ‘bottom-up’ approach, which seeks to capture insights from the farmers. Primary data was collected through a household survey, focus group discussions and key informant intervi...

Socio-Economic Factors in Technology Development and Adoption: An Assessment of the “Push-Pull” Technology of Controlling Maize Stem Borers in Trans Nzoia District

Abstract: This study sought to examine the collaborative participation approach and technology adoption. The objective of this study was to determine the linkage between socio-economic factors in collaborative participation and technology adoption and diffusion among Trans Nzoia district resource-limited farmers. Collaborative participation involves farmers, researchers, and extension agents in developing and disseminating technology. The study reviewed the push/pull’ technology of control...

Effects of Fermentation Periods and Drying Methods on Postharvest Quality of Cocoa (Theobroma Cacao) Beans in Ghana

Cocoa (Theobroma cacao) contributes significantly to Ghana’s GDP and has made Ghana a recognized leader in the cocoa industry. However, there are myriad problems associated with Ghana’s cocoa bean quality. One such problems stems from farmers paying less attention to the required postharvest activities (fermentation and drying) which contributes significantly to bean quality losses. *is study investigated the effect of the duration of the traditional heap fermentation period and differ...

Impact of Production Inputs and Timing on Crackness of Rice in Northern Ghana

Under rain-fed conditions, perfumed rice production in Northern Ghana is associated with high paddy cracking during milling. In this study, 4 perfumed rice varieties, 6 staggered planting times, 6 staggered harvesting cycles, and staggered storage duration from harvest to six months of storage were used in a randomized complete block design to identify the best combination of factors that are associated with low cracking in rice production. )e experiment was laid out in a randomized comple...

Influence of Cowpea Lines As Green Manure on Growth and Yield of Carrots in Root-Knot Nematode Infested Soil

An experiment was conducted at the University of Education, Winneba, Mampong-Ashanti campus to determine the effect of some cowpea lines as green manure on the growth and yield of carrot in root-knot nematode infested soil. Randomized complete block design with five treatments and four replications was used. Thetreatments were cowpea lines IT97K-570-18; IT97K-566-18; and IT00K-1150 as green manure, N.P.K (15, 15,15) and control. The results showed negative correlation between root-knot nema...

Impact of Production Inputs and Timing on Crackness of Rice in Northern Ghana

Under rain-fed conditions, perfumed rice production in Northern Ghana is associated with high paddy cracking during milling. In this study, 4 perfumed rice varieties, 6 staggered planting times, 6 staggered harvesting cycles, and staggered storage duration from harvest to six months of storage were used in a randomized complete block design to identify the best combination of factors that are associated with low cracking in rice production. )e experiment was laid out in a randomized complete ...

Soil Water, Growth And Yield Of Yellow Passion Fruit Response To Mulch And Hydrogel In Embu And Kiambu Counties, Kenya

Decline in yields and frequent failure of major crops in Embu and Kiambu counties, Kenya, is linked to inadequate or unevenly distributed rainfall and poor agronomic practices, among other factors. The main objective of this study was to evaluate the effect of using mulch and hydrogel in production of yellow passion fruit in Embu and Kiambu Counties, Kenya. The study was set up specifically to (i) determine the effect of mulch and hydrogel on soil moisture and nutrients in a yellow pass...

Effects Of Varietal Differences, Plant Spacing And Weeding Regimes On Weed Density And Yields Of Upland Rice In Uganda

ABSTRACT Rice is relatively new to Uganda, yet consumption is outstripping production; and with a growing population, demand is likely to increase. NERICA (New Rice for Africa) rice – with high yields and ability to withstand dry conditions is being planted in most part of the country. However, weed infestation is becoming one of the biggest hindrances affecting rice production. The objective of the current work was therefore to investigate the effects of varietal differences, plant spacin...

Evaluation Of Row Spacing And Mulching On Weed Control, Growth And Yield Of Green Pepper In Busia County, Kenya

ABSTRACT Green pepper (Capsicum annuum) is one of the most important and remunerative vegetable crops. Row spacing and mulching are important factors that influence water use, weed suppression, growth, quality, and yield of vegetables. Due to increased pressure on land, climate change and increased demand for vegetables, there is need for deployment of optimal agronomical practices that will ensure enough food production. This study was undertaken to determine the optimum spacing and mulching...

Effects Of Water Stress On Antioxidant Activity And Phenolic Contents Of African Nightshades And Their Distribution In Kisii And Siaya Counties Of Kenya

ABSTRACT Drought is a major abiotic factor limiting crop productivity in many regions of the world. It causes reduction in plant growth, dry matter accumulation and decline in plant water status of the plants and in certain cases interferes with biochemical processes within cultivated crops. The aim of the study was to map out the distribution of different African Nightshade species in Siaya and Kisii Counties of Kenya and to determine water stress effect on total antioxidant capacity and tot...


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