Browsing by Author "Ooro, P.A."

Now showing 1 - 10 of 10

Changes of Soil Conditions and Maize Yield After Years of Conventional Tillage on a Mollic Soil
(East African Agricultural and Forestry Journal, 2023) Mwangi, H.G.; Irene, W.G.; Ooro, P.A.; Esilaba, A.O.; Githunguri, C.; Wasilwa, L.; Kenya Agricultural Livestock & Research Organization (KALRO)-Njoro ; University of Nairobi
Soil tillage affects soil physical, biological and nutrient cycling capacity. Field studies were conducted from 2016 to 2018 on same site using two tillage systems Conventional and Reduced tillage. Conventional tillage was done using a 3-disc plough while reduced tillage was done using a Chisel plough. The objective of this study was to evaluate changes in some soil properties induced by two different tillage treatments and their effect on maize grain yield. The trial was set at Kenya Agricultural Livestock & Research Organization (KALRO) Njoro on a Mollic Andosol. The design was randomised complete block replicated four times. The factor tillage had two levels. Changes in water stable aggregates, compaction as measured by changes in bulk density, soil water retention at pF 4.2, total soil organic carbon and hence soil organic matter, microbial biomass [bacteria and fungi] in form of total microbial biomass-N and microbial biomass-C and maize yield were obtained after three years in 2018. With exception of bulk density that was found to be higher in Conventional tillage, results showed that aggregate stability water stable aggregates, soil water retention capacity at pF4.2, soil organic matter. Total microbial biomass-nitrogen and microbial biomass-carbon were higher in reduced tillage. Maize grain yield was higher (p<0.05) in reduced tillage. Bulk density of the soil was observed to be higher after three years of conventional tillage compared to reduced tillage. Reduced tillage increased soil organic matter, structure, water retention and microbial biomass and maize yields. This study has revealed that reduced tillage is pivotal in healing the highly weathered soils that have become degraded and soil fertility has declined through decades of continuous disc and plough tillage, lengthy exploitation and nutrient mining leading to low crop yields.
Integrating Inorganic and Organic Fertilizers in Cropping Systems for the Transformation of Maize Productivity in Nakuru County
(East African Agricultural and Forestry Journa, 2023) Ooro, P.A.; Mwangi, H.G.; Esilaba, A.O.; Nyongesa, D.; Miriti, J.M.; Okoti, M.; Lusike, W.A.; Githunguri, C.; Thuranira, E.G.; Moraa, L.M.; Luvonga, J.; Osoo, J.O.; Bor, P.K.; Kenya Agricultural Livestock & Research Organization -Njoro (KALRO), Headquaters & Kabete
Despite the immense significance of maize (Zea mays L.) for Kenya’s economic prosperity and food security, productivity and production have not significantly increased over time. This is attributed to a number of things, including decreased soil fertility. In order to ascertain the applicability of Integrated Soil Fertility Management (ISFM), a study was carried out between 2016 and 2017 in Nakuru County at the Kenya Agricultural and Livestock Research Organization (KALRO), Njoro Centre, Nakuru County. The treatments were arranged in a split-split plot in a randomized complete block design (RCBD) replicated four times. Soil and water conservation (SWC) and conventional tillage (CT) were allocated to the main plot, the split-plots and fertilizer sources i.e Farm yard manure (FYM), Nitrogen (N) and Phosphoros (P) fertilizers to the split-split plot. Kenya Seed Company maize hybrid (H6213) and Egerton bean variety (Chelalang) were used as test crops. A variety of maize and bean (Phaseolus vulgaris L) characteristics, such as plant stand at germination, plant vigor, days to 50% blooming, days to 50% maturity, plant stand at harvest, number of pods per plant, number of cobs, number of seeds per pod, grain yield, and 100-grain weight, were all recorded. Applying a full rate of inorganic fertilizer resulted in significantly maize yields (P< 0.05) compared to all other fertility management strategies, with the exception of those where a half rate of both inorganic and organic fertilizers was applied. The results further showed that the use of inorganic fertilizer alone considerably increased maize output whether cultivated as a sole crop or an intercrop compared to farmyard manure applied alone or in conjunction with inorganic fertilizer.
Kalro-Kcep - CRAL Climate Smart Agriculture Extension Manual
(Kenya Agricultural and Livestock Research Organization., 2019-04) Kisilu, R.; Karanja, J.K.; Mwathi, J.W.; Ooro, P.A.; Esilaba, A.O.; Nyongesa, D.; Okoti, M.; Githunguri, C.; Miriti, J.; Otipa, M.; Nassiuma, E.; Too, A.; Kamidi, M.; Wanjekeche, E.; Odoyo, E.; Wayua, F.; Likhayo, P.; Kamau, G.M.; Ochieng, V.; Wasilwa, L.; Kenya Agricultural and Livestock Research Organization
Climate change is real and has become an obstacle to sustainable development all over the world. Climate change has positive and negative effects in agriculture depending on the regions of the world. The negative impacts are expected to be more serious in developing countries, particularly those in sub-Saharan Africa such as Kenya. For instance, Kenya has experienced increasing temperatures from 1960’s, together with higher frequency and intensity of extreme weather events such as El Niño and La Niña. Effects of the negative impacts include declining agricultural productivity and loss of crops, livestock, fish and investments in agriculture due to changing temperatures and rainfall and many extreme weather events.
KALRO-KCEP - CRAL Common Dry Beans Extension Manual
(Kenya Agricultural and Livestock Research Organization., 2016-04) Macharia, D.; Waithaka, M.; Esilaba, A.O.; Nyongesa, D.; Okoti, M.; Githunguri, C.; Miriti, J.; Otipa, M.; Too, A.; Bett, B.; Gathambiri, C.; Amata, R.; Nassiuma, E.; Odoyo, E.; Wayua, F.; Karanja, J.K.; Mwathi, J.W.; Likhayo, P.; Ooro, P.A.; Ochieng, V.; Wasilwa, L.; Kenya Agricultural and Livestock Research Organization
Pulses, or grain legumes in general, are an essential source of supplementary protein to daily diets based on cereals and starchy for a predominantly vegetarian population and those who cannot afford expensive animal protein. Pulses are therefore often regarded as poor man’s meat”. They also provide energy, protein, essential minerals, vitamins and several compounds considered beneficial for good health. Their cultivation enriches soil by adding nitrogen, and improves the physical, chemical and biological soil properties. They are also well suited to diverse environments and fit in various cropping systems owing to their wide adaptability, low input requirements, fast growth, nitrogen fixing and weed smothering ability. Their short growing period and photoperiod sensitivity make them suitable for crop intensification and diversification. Notwithstanding their high production potential, their productivity is generally low as these are cultivated on poor lands, with no or little inputs, and are susceptible to several abiotic and biotic stresses.
KALRO-KCEP Climate Smart Agriculture Training and Extension Manual
(Kenya Agricultural & Livestock Research Organization (KALRO)., 2016-04) Okoti, M.; Esilaba, A.O.; Ketiem, P.K.; Mutoko, C.; Kimani, S.; Mwathi, J.W.; Githunguri, C.; Nyongesa, D.; Miriti, J.; Nassiuma, E.; Gitari, J.; Ooro, P.A.; Murage, P.M.; Murage, P.M.; Koech, M.; Thuranira, E.; Ashiono, G.; Rono, B.; Kamau, G.; Njaimwe, A.; Gachuki, P.; Maina, I.; Masinde, W.; Macharia, D.; Waithaka, M.; Barkutwo, J.; Mwenda, M.; Ringera, J.M.; Onyango, E.M.; Karanja, J.; Kamidi, M.; Wanjekeche, E.; Woyengo, V.; Odendo, M.; Kipkemoi, P.L.; Magiroi, K.N.; Mwangi, H.; Chebosonwy, R.; Macharia, M.; Wanyonyi, M.; Kenya Agricultural & Livestock Research Organization (KALRO)
A significant variation either in the mean state of the climate or its variability, persisting for a period not less than 30 years. Climate change and variability is attributed to both natural and man-made induced causes. In the last 2 decades, causes attributed directly or indirectly to human activity have significantly altered the climate system through the greenhouse gas emissions. It is now evident that the globe is warming and the mean surface temperature has tremendously increased.
KALRO-KCEP Curriculum for Training of Trainers
(Kenya Agricultural & Livestock Research Organization, 2016-03) Esilaba, A.O.; Githunguri, C.; Nyongesa, D.; Okoti, M.; Miriti, J.; Nassiuma, E; Wamaitha, M.; Kamau, G.; Kimani, S.; Karanja, J.; Macharia, D.; Njaimwe, A.; Gachuki, P.; Rono, B.; Mutoko, C.; Masinde, W.; Gitari, J.; Ooro, P.A.; Murage, P.M.; Kamidi, M.; Mwenda, M.; Waithaka, M.; Ketiem, P.K.; Maina, I.; Ringera, J.M.; Wanjekeche, E.; Gitari, I.; Masilia, P.; Kenya Agricultural and Livestock Research Organization
The KCEP specific objectives are to support smallholder farmers’ graduate from subsistence to commercial agriculture, enhance post-production management practices and develop market linkages for targeted value chains. Among various other programme roles, KALRO is responsible for the development and, updating of extension materials and guidelines in addition to building the capacity of key stakeholders. Eight training of trainers’ (TOT) workshops covering Nakuru, Kakamega, Nandi, Trans-Nzoia, Bungoma, Machakos, Makueni and Tharaka Nithi counties have been designed to build the capacity of lead farmers, extension agents and service providers who will in turn train the farmers in their respective areas. This curriculum has been developed to guide facilitators who will be involved in the ToTs program planned for the various project areas. The training will be accomplished through lectures, field exercises, practical sessions, role-plays and other adult learning techniques. The curriculum describes the step by step process that will be followed to train on farming as a business (FAB), climate smart agriculture (CSA), soil fertility management, Maize, millet (Pearl and finger) and sorghum and pulses (beans) production and marketing in Kenya.
KALRO-KCEP Farming as Business Training and Extension Manual
(Kenya Agricultural & Livestock Research Organization (KALRO), 2016-04) Rono, B.; Nyongesa, D.; Esilaba, A.O.; Masinde, W.; Mutoko, C.; Mwenda, M.; Waithaka, M.; Mwathi, J.W.; Githunguri, C.; Okoti, M.; Nassiuma, E.; Miriti, J.; Maina, I.; Ketiem, P.K.; Kamidi, M.; Wanjekeche, E.; Woyengo, V.; Odendo, M.; Kipkemoi, P.L.; Magiroi, K.N.; Mwangi, H.; Chebosonwy, R.; Macharia, M.; Wanyonyi, M.; Gitari, J.; Ooro, P.A.; Murage, P.M.; Koech, M.; Thuranira, E.; Ashiono, G.; Kamau, G.; Njaimwe, A.; Gachuki, P.; Macharia, D.; Barkutwo, J.; Ringera, J.M.; Onyango, E.M.; Karanja, J.; Kenya Agricultural & Livestock Research Organization
Most farmers are subsistence oriented and mainly strive to produce food for their households only. However, farmers play a great role, including contributing to food and nutrition security and generating income for their household needs. There is therefore a great need to empower farmers increased participation in embracing farming as a business. A business is viewed as a commercial activity, which operates with the intention of making a profit, by provision of services or commodities to meet needs and wants of customers. This requires changing the mind-set of most farmers from producing only for subsistence use to becoming commercially oriented.
KALRO-KCEP Soil Fertility Management Training and Extension Manual
(Kenya Agricultural and Livestock Research Organization, 2016-04) Miriti, J.; Nassiuma, E.; Gitari, J.; Murage, P.M.; Koech, M.; Thuranira, E.; Ashiono, G.; Esilaba, A.O.; Mwathi, J.W.; Nyongesa, D.; Githunguri, C.; Okoti, M.; Rono, B.; Ketiem, P.K.; Kimani, S.; Kamau, G.; Njaimwe, A.; Gachuki, P.; Maina, I.; Mutoko, C.; Masinde, W.; Macharia, D.; Waithaka, M.; Barkutwo, J.; Mwenda, M.; Ringera, J.M.; Ooro, P.A.; Onyango, E.M.; Karanja, J.; Kamidi, M.; Wanjekeche, E.; Woyengo, V.; Odendo, M.; Kipkemoi, P.L.; Magiroi, K.N.; Mwangi, H.; Chebosonwy, R.; Macharia, M.; Wanyonyi, M.
Soil is composed of mineral particles, weathering products of the parent material, and organic matter, (e.g. residues from plants and animals), air and soil water. The solid particles are categorized size into: gravel and stones (>2 mm in diameter), sand (2.0 to 0.02 mm), silt (0.02 to 0.002 mm) and clay (< 0.002 mm). Soil properties are dependent on the relative composition and arrangement of soil particles.l texture is the relative proportions of sand, silt and clay contained in a soil. Soils are described as sands, sandy loams, loams, clay loams, clays depending on their texture.
KCEP - CRAL Green Grams Extension Manual
(Kenya Agricultural and Livestock Research Organization, 2019-04) Macharia, D.; Waithaka, M.; Otipa, M.; Nassiuma, E.; Esilaba, A.O.; Nyongesa, D.; Okoti, M.; Githunguri, C.; Miriti, J.; Too, A.; Bett, B.; Gathambiri, C.; Amata, R.; Odoyo, E.; Wayua, F.; Karanja, J.K.; Mwathi, J.W.; Likhayo, P.; Ooro, P.A.; Kamau, G.M.; Ochieng, V.; Wasilwa, L.; Kenya Agricultural and Livestock Research Organization
Pulses, or grain legumes in general, are an essential source of supplementary protein. They also provide energy, protein, essential minerals, vitamins and several compounds considered beneficial for good health. Their cultivation enriches soil by adding nitrogen, and improves the physical, chemical and biological soil properties. They are also well suited to diverse environments and fit in various cropping systems owing to their wide adaptability, low input requirements, fast growth, nitrogen fixing and weed smothering ability. Their short growing period and photoperiod sensitivity make them suitable for crop intensification and diversification. Not withstanding their high production potential, their productivity is generally low as these are cultivated on poor lands, with no or little inputs, and are susceptible to several abiotic and biotic stresses.Green gram (Vigna radiata L.) also known as Mung bean and in Kiswahili Ndengu is one of the potential food and cash crop pulses that have been observed to perform well in the arid regions of Kenya. The crop is commonly grown in central, south Nyanza, eastern and coastal regions. Its edible grain is characterized by good digestibility, flavor, high and easily digestible protein content and absence of any flatulence effects (Ahmed et al., 2001). Its seed contains contain approximately 374Kcal, 23.9% protein, 1.2% fat, 16.3% dietary fiber, 4.5-5.5% ash, 63% carbohydrates on dry weight basis. It’s also a crucial source of vitamins A and B complex and generous amounts of micro-nutrients such as iron and zinc which are deficient in diets among the poor, particularly pregnant women and children in Africa (Swaminathan et. al., 2012).
KCEP - Maize Production Training and Extension Manual
(Kenya Agricultural and Livestock Research Organization, 2016-08) Karanja, J.K.; Mwathi, J.W.; Ooro, P.A.; Esilaba, A.O.; Nyongesa, D.; Kamidi, M.; Wanjekeche, E.; Macharia, D.; Waithaka, M.; Woyengo, V.; Barkutwo, J.; Githunguri, C.; Kamau, G.; Miriti, J.; Nassiuma, E; Masinde, W.; Mwenda, M.; Njaimwe, A.; Macharia, M.; Gitari, J.; Murage, P.M.; Koech, M.; Thuranira, E.; Ashiono, G.; Rono, B.; Ketiem, P.K.; Kimani, S.; Gachuki, P.; Wanyonyi, M.; Maina, I.; Mutoko, C.; Ringera, J.M.; Odendo, M.; Kipkemoi, P.L.; Chebosonwy, R.; Magiroi, K.N.; Mwangi, H.; Onyango, E.M.
The scientific name for maize is Zea mays; but for the purpose of this manual it will be referred to as maize. This production manual is a guide on growing maize successfully in different agro-ecological areas of Kenya, in a rain fed system not under irrigation. However, many principles of agronomy are relevant to both irrigated and rainfed farming systems. Maize is a staple food in Kenya, accounting for an average production of 4.4 million tonnes for the period 2010 to 2013 (FAO, 2015). It contributes to about 65% of daily per capita cereal consumption and serves as subsistence and a commercial crop grown on an estimated 1.4 million hectares. Maize production accounts for more than 20% of the total agricultural production and 25% of agricultural employment in the country. It is an important source of carbohydrate, protein, iron, vitamin B, and minerals. Maize products include baked, roasted and boiled fresh maize on the cob, porridge, pastes, beer, starch, oil and livestock feed from by-products of fresh and dry maize grain. This manual outlines important maize-crop agronomy and provides information on the methodology and technology that farmers may be able to utilise to grow maize in Kenya. Climate change, increased human activities, pathogen and vector evolution have increased the spread of invasive pests and diseases in maize farming systems in Kenya. The country has faced severe disease and pest outbreaks that impact on the country’s food security. Heavy attacks of loses of as much as 100% have been reported due to Maize lethal necrosis disease and fall armyworm. The use of Integrated Pest Management (IPM) provides maize farmers with management options to reduce pesticides use in the management of pest and diseases. Precise and prompt pest and disease detection are vital for their prevention or management. After harvesting their crop, farmers in Kenya face challenges of poor grain handling and management, leading to 30% of post-harvest losses, translating to more than US$ 4 billion losses per annum (Hodges et al., 2011). They also market their grain at low price at harvest time forcing households to buy grains for family consumption when prices increase. Post-harvest losses lead to insufficient food supply, even when crop yields and land under cultivation have been increasing. This is partly due to lack of knowledge on appropriate methods of grain storage. This post- 11 harvest management component will support farmers in securing high returns from investments on grain production. This is through adoption of improved on-farm grain handling practices to minimize post-harvest losses and enhanced access to markets offering favourable terms. This manuals’ goal is to reduce post-harvest losses from the current estimated 30% to industry accepted levels of below 5%. This will lead to usage of certified warehouse system by farmers to bulk and sell their produce at a price 30% higher than prevailing farm gate price. systems in Kenya. The country has faced severe disease and pest outbreaks that impact on the country’s food security. Heavy attacks of loses of as much as 100% have been reported due to Maize lethal necrosis disease and fall armyworm. The use of Integrated Pest Management (IPM) provides maize farmers with management options to reduce pesticides use in the management of pest and diseases. Precise and prompt pest and disease detection are vital for their prevention or management. After harvesting their crop, farmers in Kenya face challenges of poor grain handling and management, leading to 30% of post-harvest losses, translating to more than US$ 4 billion losses per annum (Hodges et al., 2011). They also market their grain at low price at harvest time forcing households to buy grains for family consumption when prices increase. Post-harvest losses lead to insufficient food supply, even when crop yields and land under cultivation have been increasing. This is partly due to lack of knowledge on appropriate methods of grain storage. This post- 11 harvest management component will support farmers in securing high returns from investments on grain production. This is through adoption of improved on-farm grain handling practices to minimize post-harvest losses and enhanced access to markets offering favourable terms. This manuals’ goal is to reduce post-harvest losses from the current estimated 30% to industry accepted levels of below 5%. This will lead to usage of certified warehouse system by farmers to bulk and sell their produce at a price 30% higher than prevailing farm gate price.

Kenya Agricultural &
Livestock Research Organization

Browsing by Author "Ooro, P.A."

Social Media Links

Contact Us

Our Address