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The Influence of Organic Manure and Biochar on Cashew Seedling Performance, Soil Properties and Status

Agricultural Sciences 2019年第1期10卷 110-120页

作者： beatric. abanum nduka Moses Ogunwole Ogunlade Dele Omoyele Adeniyi Isaac Kayode Oyewusi Osasogie Ugioro Idrisu Mohammed Agronomy Section Cocoa Research Institute of Nigeria Ibadan Nigeria Soil and Plant Nutrition Section Cocoa Research Institute of Nigeria Ibadan Nigeria Plant Pathology Section Cocoa Research Institute of Nigeria Ibadan Nigeria Department of Agricultural Technology The Federal Polytechnic Ado-Ekiti Ado-Ekiti Nigeria

A nursery experiment was conducted at Cocoa Research Institute of Nigeria to evaluate the impact of manure on cashew seedlings. Treatments consisted of biochar, compost, combination of biochar + compost and a control. Treatments were applied at rate of 0 g (control), 5 g compost, 5 g biochar and 2.5 g each of biochar and compost combination into 5 kg soil in pots, laid out in a completely randomized design (CRD) with three replications. The experiment was monitored for four months in the greenhouse. Data were collected on number of leaves, plant height, stem girth, soil nutrient composition and nutrient uptake, all analyzed using analysis of variance. The treated soils were also assayed on Potato Dextrose Agar for associated mycoflora. The study showed that the soil PH, N, P, K, Ca and Mg were equally enhanced significantly relative to the control, while Aspergillus, Trichoderma, Beauverie, Penicillium, Lasiodiplodia and Rhizopus cultured treated soils shows that Trichoderma harzianum and Beauverie bassiana were significantly higher in combination of biochar and compost treated soil and posed that their bio-control potential is coupled with soil fertility enhancement characteristics. The results also indicate that stem girth and number of leaves were significantly (P ≤ 0.05) different with respect to applied treatment at the first month after treatments application. The leaf area was not enhances with the application of biochar. Combination of biochar + compost significantly enhanced number of leaves and stem girth at the 4th and 12th weeks after planting. Similarly leaf K and P uptake were significantly (<0.05) increased by the application of organic compost and biochar irrespective of whether combined or not compared to the control seedlings. The effect of biochar and compost on cashew leaf Ca and Mg uptake were not significantly different from the control but had a higher value relative to the control. It could therefore be recommended that addition of compost an

关键词： Biochar Cashew Compost Nutrient Mycoflora Uptake

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Comparative Effects of Cocoa Pod Husk and Oil Palm Bunch Ash on Nutrient Uptake, Growth and Dry Matter Yield of Cocoa (The-obroma cacao) in Ibadan, Southwest Nigeria

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Agricultural Sciences 2014年第11期5卷 1046-1052页

作者： Olorunfemi Sunday Ojo Akanbi Amos Olatunde Famaye Olayinka Olufemi Olaniyi Rufus Rotimi Ipinmoroti C. I. Iloyanomo beatric. abanum nduka Seun Adewale Adeosun Soils and Plant Nutrition Section Cocoa Research Institute of Nigeria Ibadan Nigeria Agronomy and Soil Division Cocoa Research Institute of Nigeria Ibadan Nigeria Department of Plant Breeding Cocoa Research Institute of Nigeria Ibadan Nigeria

The high premium placed on the organically produced cocoa in the international market coupled with its health and environmental benefits necessitated recent focus on research into the use of agricultural wastes as source of nutrients in cocoa (T. cacao) production. The study was carried out at the Cocoa Research Institute of Nigeria (CRIN), Ibadan (Lat. 7°25'N Long. 3°25'E), South-western, Nigeria during the 2010/2011 seedling production season to compare the effects of NPK (20:10:10) fertilizer, Cocoa Pod Husk and Oil Palm Bunch Ash (CPHA and OPA) on the seedling growth and dry matter yield of cocoa (T. cacao). Equivalent amount of different rates of two nutrients sources CPHA and OPA were applied one month after planting at 0, 1, 2, 3, 4 and 5 t/ha respectively, recommended rate of 10 kg·N of the conventional NPK (20:10:10). Fertilizer was used as reference fertilizer. Results indicated that all the fertilizer materials positively and significantly (p > 0.05) increased the growth parameters considered. The influence of the ash materials irrespective of sources on the nutrient uptake, dry matter yield of cocoa seedlings and shoot to root ratio were either higher than or had a comparable results with the reference fertilizer (NPK 20:10:10). CPHA and OPA applied at a rate of 4 t/ha significantly (p > 0.05) increased the plant height and root length of cocoa seedlings respectively relative to control and in—organic fertilizer and could therefore be recommended for the prospective and existing Nigerian cocoa farmers for raising their seedlings in the nursery before transplanting to the field.

关键词： Cocoa Pod Husk Ash Oil Palm Bunch Ash Dry Matter Yield Cocoa Seedlings

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