Browsing School of Agriculture, Natural Resources and Environmental Studies by Author "Kisinyo, Peter"
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Adoption of Drought Tolerant Sorghum in Western Kenya
Ouma, Evans Ochieng; Kisinyo, Peter; Gudu, Samuel; Mugalavai, Violet; Nyangweso, Peter; Onkware, Augustino (Moi University Press, 2012)Food and nutritional insecurity are responsible for poverty and low livelihoods of about 33% of people living in western part of Kenya. This is against MDG1. The production of sorghum which is a staple food crop is below ... -
Aluminum tolerance mechanisms in Kenyan maize germplasm are independent from the citrate transporter ZmMATE1
Matonye, Thomas K.; Gudu, Samuel; Kisinyo, Peter; Matonye, Thomas K.; Barros, Beatriz A.; Ouma, Evans Ochieng; Cheprot, Reuben K.; Apolinário, Leandro C.; Ligeyo, Dickson O.; Costa, Marcella B. R.; Were, Beatrice Ang’iyo; Onkware, Augustino; Noda, Roberto W.; Magalhaes, Jurandir V.; Guimaraes, Claudia T. (Scientific Reports, 2020) -
Comparison of soil phosphorous extraction by Olsen and double acid methods in acid soils of Western Kenya
Maghanga, K. Justin; Kituyi, L. John; Segor, K Fred; Kisinyo, Peter (2015-08-21)hosphorous is an essential nutrient in plants required for root establishment. In the soil, it is applied as DAP, TSP or phosphate rocks. In acid soils, aluminium and iron are dominant and tend to “fix” phosphorous, ... -
Depletion of phosphate rock reserves and world food crisis: Reality or hoax?
Kisinyo, Peter; Opala, Peter (African Journal of Agricultural Research, 2020-09)Phosphate rock (PR) deposits are the major source of phosphate (P) fertilizers for soil fertility replenishment. The demand for P fertilizers in the year 2014 was 42,706,000 tons and was expected to reach 46,648,000 tons ... -
Development of maize single cross hybrids for tolerance to low phosphorus
Gudu, Samuel; Kisinyo, Peter; Ouma, Evans Ochieng; Ligeyo, Dickson; Matonyei, Thomas; Were, Beatrice Ang’iyo; Agalo, Joyce; Too, Emily; Onkware, Augustino; Okalebo, John; Othieno, Caleb (2015-08-21)Low available phosphorus (P) is one of the major hindrances to maize (Zea mays L.) productivity in acid soils. The objectives of this study were to: (1) develop P-efficient maize inbred lines, (2) develop single cross ... -
Effect of organic and inorganic phosphorus sources on maize yields in an acid soil in western Kenya
Kisinyo, Peter; Opala, P. A.; Okalebo, Æ J. R.; Othieno, Caleb (Research Gate, 2009-06-20)Maize production in western Kenya is commonly limited by P deficiencies and aluminum phytotoxicity. Due to high costs of imported fertilizers and lime, focus is now shifting to solutions that utilize local resources. We ... -
Effects of combining organic materials with inorganic phosphorus sources on maize yield and financial benefits in western Kenya
Opala, P. A.; Othieno, Caleb; Kisinyo, Peter (Cambridge University Press, 2009-10-09) -
Effects of lime, phosphorus and rhizobia on Sesbania sesban performance in a Western Kenyan acid soil
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R.; Opala, P. A.; Maghanga, J. K.; Agalo, Jerry; Ng'etich, W. K.; Kisinyo, Joyce; Osiyo, R. J.; Nekesa, A. O.; Makatiani, E. T.; Odee, D. W.; Ogola, B. O. (2015-07-21)Aluminium (Al) toxicity, phosphorus (P) deficiency and low rhizobia populations limit Sesbania (Sesbania sesban) performance in tropical acid soils. The study determined the i) indigenous rhizobia populations that nodulate ... -
Effects of Organic and Inorganic Fertilizers on Weed Diversity and Population in Tobacco (Nicotiana tabacum L.) Farms in Migori County
Nyantika, Martha M.; Sudoi, Vincent; Okeyo-, Owuor J.B; Kisinyo, Peter (Journal of Crops, Livestock and Pests Management, 2023-10-11)Tobacco (Nicotiana tabacum L.) is a significant cash crop in Migori County, Kenya, and plays a vital role in the local economy. However, the cultivation of tobacco is not without its challenges, one of which is weed ... -
Enhancing Maize Grain Yield in Acid Soils of Western Kenya Using Aluminium Tolerant Germplasm
Ouma, Evans Ochieng; Ligeyo, Dickson; Matonyei, Thomas; Agalo, Joyce; Were, Beatrice Ang’iyo; Too, Emily; Onkware, Augustino; Gudu, Samuel; Kisinyo, Peter; Nyangweso, Philip (2015-07-21)Abstract: Maize (Zea mays L.) is one of the world’s most important cereals and is a staple food for many people in developing countries. However, in acid soils (pH < 5.5), its productivity is limited by aluminium (Al) ... -
Immediate and residual effects of lime and phosphorus fertilizer on soil acidity and maize production in western Kenya
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R; Opala, P. A.; Ng'etich, W. K.; Nyambati, R.O.; Ouma, Evans Ochieng; Agalo, Jerry; Kebeney, S.J; Too, E.J; Kisinyo, Joyce; Opile, W.R. (2015-08-21)Soil acidity and phosphorus (P) deficiency are some of the major causes of low maize yields in Kenya. This study determined the immediate and residual effects of lime and P fertilizer on soil pH, exchangeable aluminium ... -
Impact of Nitrogen Ferterlizer Application on surface Water Nitrate Levels Within a Kenyan Tea Plantation
Maghanga, JA; Kituyi L John; Kisinyo, Peter; Ng'etich, W. K. (2015-08-21) -
Influence of Cropping System and Residue Management on Selected Soil Chemical Properties
Kisinyo, Peter (Advances in Research., 2018-02-09)Declining soil fertility in sub-Saharan Africa caused by continuous cropping without nutrient inputs has resulted in declining crop yield. The study was aimed to determine the effects of crop rotation and crop residue ... -
Maize Response to Micro Dose Inorganic Inputs on an Acid Smallholder Farm in Kenyan Lower Midland
Palapala, Valerie; Kisinyo, Peter (Pearl Research Journals, 2016-09-13)The study determined nitrogen, phosphorus fertilizers and lime micro doses effects on soil chemistry and maize performance on an acid soil smallholder farm. Treatments were micro doses (50% of recommendations) of N (0 and ... -
Micro-Dosing of Lime, Phosphorus and Nitrogen Fertilizers Effect on Maize Performance on an Acid Soil in Kenya
Kisinyo, Peter; Gudu, Samuel; Palapala, Valerie; Opala, P. A.; Othieno, Caleb; Ouma, Evans Ochieng (Sustainable Agriculture Research, 2015-03-17)High cost of inorganic fertilizers and lime has precluded their use by smallholder farmers to remedy the problem of soil acidity and infertility in Kenya. To address the problem, we tested a precision technique referred ... -
Phosphorus Sorption and Lime Requirements of Maize Growing Acid Soils of Kenya
Kisinyo, Peter; Othieno, Caleb; Gudu, Samuel; Okalebo, J. R.; Opala, P. A.; Maghanga, J. K.; Ng'etich, W. K.; Agalo, Joyce; Opile, R.W.; Kisinyo, Joyce; Ogola, B. O. (2015-08-21)In Kenya, maize (Zea mays L.) is mainly grown on acid soils in high rainfall areas. These soils are known for low available phosphorus (P), partly due to its sorption by aluminium (Al) and iron oxides. The study ... -
Recent advances towards understanding and managing Kenyan acid soils for improved crop production
Kisinyo, Peter; Palapala, Valerie Adema; Gudu, Samuel; Opala, P. A.; Othieno, Caleb; Okalebo, J.R.; Otinga, A.N. (African Journal of Agricultural Reseach, 2014-06-18) -
Response of Maize to Organic and Inorganic Sources of Nutrients in Acid Soils of Kenya
Kisinyo, Peter; Opala, P. A.; Nyambati, R.O. (2015-07-21)aize yield in Kericho County, Kenya is limited by infertile acidic soils. The effect of inorganic sources of nutrients and amendments; triple superphosphate (TSP), calcium ammonium nitrate (CAN) and lime, were compared ... -
Response of Sorghum (Sorghum bicolor (L.) Munch) and Chemical Characteristics of Soil to Organic and Inorganic Fertilizers on Kenyan Lower Midlands Acid Soil
Kisinyo, Peter; Opala, P. A.; Gudu, Samuel (International Journal of Plant & Soil Science, 2019-05-17)Soil acidity, low level of nitrogen (N), phosphorus (P) and soil organic matter are major constraints to sorghum production in Kenya. We investigated the effect of farmyard manure (FYM) and combined application of inorganic ...