Open Access Original Research Article

Impact of Exogenous Application of Plant Growth Regulators on Growth and Yield Contributing Attributes of Summer Tomato

Md. Elias Hossain, Ruhul Amin, Md. Nasir Hossain Sani, Kamal Uddin Ahamed, Md. Tofail Hosain, Rezowana Nizam

International Journal of Plant & Soil Science, Page 1-14
DOI: 10.9734/IJPSS/2018/43935

The experiment was conducted with the intention of investigating the impact of different concentrations and combination of the plant growth regulators on growth and yield contributing attributes of summer tomato. The experiment was laid out in Completely Randomized Resign (CRD) with four replications. Different plant growth regulators viz. T0= Control, T1 = 20 ppm NAA, T2 = 20 ppm GA3 and T3 = 20 ppm NAA + 20 ppm GA3 were used in the study. The growth and yield contributing characters were significantly influenced by the application of plant growth regulators. At harvest, the longest plant (86.90cm), number of cluster plant-1(9.95), bud cluster-1(8.01) flower cluster-1(5.94) and fruits plant-1(16.48) and fruit yield plant-1(309.04g) were found in BARI Hybrid Tomato-8. At harvest, the maximum plant height (88.30cm) was found in T2 and the number of number of cluster plant-1(10.12), bud cluster-1(8.26)flower cluster-1(5.99) and fruits plant-1(17.65) and fruit yield plant-1 (328.99 g) were found with the application of 20 ppm NAA+20 ppm GA3, whereas the minimum for these characters were recorded from control plants. In case of combined effect of variety and plant growth regulator, the maximum plant height (90.79 cm) was found in V4T2 which was statistically similar to V4T3, and the number of number of cluster plant-1(11.68), bud cluster-1(8.80) flower cluster-1(6.78) and fruits plant -1(23.95) and fruit yield plant-1(474.60 g) were found V4T3 whereas the minimum for all these characters were found in control plants. Therefore, it can be suggested that 20 ppm NAA along with 20ppm GA3 can be effective in enhancing growth and yield of summer tomato.

Open Access Original Research Article

Effects of Neem-Based Organic Fertilizer, NPK and Their Combinations on Soil Properties and Growth of Okra (Abelmoschus esculentus) in a Degraded Ultisol of Calabar, Nigeria

E. O. Ayito, Otobong B. Iren, Kingsley John

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2018/43027

A field experiment was conducted at the University of Calabar Teaching and Research Farm to evaluate the effects of neem-based organic fertilizer, NPK and their combinations on soil chemical properties and growth of okra (Abelmoschus esculentus) on a degraded Ultisol Calabar. The experiment was laid out in a randomized complete block design with three replications comprising of six treatments. The treatments were control (no amendment), sole NPK 20:10:10 fertilizer and neem–based organic fertilizer applied at 120 kg N/ha, combinations of 60 kg N/ha NPK+ 60 kg N/ha Neem, 90 kg N/ha NPK + 30 kg N/ha Neem and 30 kg N/ha NPK + 90 kg N/ha Neem. Results showed that the soil chemical properties were influenced significantly (P<0.05) by the treatments with the highest pH and exchangeable Ca values obtained in plots treated with half NPK and half Neem while plots treated with sole Neem recorded highest values for CEC and base saturation. Soils treated with 60 kg N/ha NPK+ 60 kg N/ha Neem gave a significant (P<0.05) increase in plant height, number of leaves and stem girth at 4, 6 and 8 weeks after planting. Based on the results obtained, it can be inferred that the soils amended with 60 kg N/ha NPK + 60 kg N/ha Neem significantly (P< 0.05) increased the growth of okra in the study area and is therefore recommended.

Open Access Original Research Article

Development and Utilisation of Improved White-Seeded, Tan-Plant Grain Sorghum Cultivars in Mali

Aboubacar Touré, Aissata Bengaly, Abocar O. Touré, Abdoulaye G. Diallo, Fatim Cissé, Mamourou Diourté, Niamoye Yaro, Abdoul W. Touré, Bourema Dembélé

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2018/43291

The pedigree breeding method was successfully adopted to develop high yielding, white-seeded, grain sorghum cultivars with other attributes including “tan” plants, sensitivity to photoperiod and excellent adaptation to the Sudanian and Sahelian agro-ecological conditions in Mali. The new cultivars possess an excellent grain quality which added value for processing. The breeding process included crossing of local guinea race cultivars and improved or introduced Caudatum race varieties, selected from F2, F3, F4, F5 and F6 generations, conducting yield and grain quality trials of advanced lines on station and on-farm with farmer participatory selection. Processing quality of the grain was evaluated through measuring the decortication yield of each cultivar using the TADD (Tangential Abrasive Dehuller Device); measuring shelf life of processed flour in bags made of polyethylene for 3 months; manufacturing of new products by partially substituting wheat flour with flour of new sorghum varieties in pastry and biscuits. The study revealed a series of improved lines with "tan" plants, white grain, Guinea race type characterised by a loose panicle, long glumes and a hard grain. The best example of new cultivars N’Tenimissa, was described as the first white, “tan” plant, straw-coloured glume, photoperiod sensitive and high yielding sorghum cultivar with a white endosperm, and a thin pericarp developed in Mali. The cultivar has almost the same decortication yield with already adopted varieties by farmers. Its flour yield is similar to that of local guinea cultivars, and its flour is nearly as white as wheat flour. The analysis of various organoleptic parameters indicated that partially substituting wheat with 20% sorghum flour made the preferred biscuit by consumers prompting the commercial manufacturing of a biscuit called Deliken by the General Alimentation du Mali (GAM). A commercial sorghum supply chain was initiated by linking smallholders producing the new cultivar to a grain trader for selling the grain to the industry. This shows a path for the future in the diversification of uses of a local staple crop, sorghum.  It is based on a strong Public-Private Partnership to link smallholders to the commercial supply chain, providing an incentive for farmers to grow new and highly productive cultivars for the development of value-added products.

Open Access Original Research Article

Effect of Humic Acid, Treated Sewage Effluent and Radiation on Canola Growth and Oil Production

Ezzat A. Kotb, Ahmed A. Moursy

International Journal of Plant & Soil Science, Page 1-8
DOI: 10.9734/IJPSS/2018/43422

A greenhouse experiment was carried out to evaluate the role of Humic acid (HA) in improving canola (Brassica napus L.) growth when irrigated with treated sewage. We applied different concentrations of HA (0, 5, 10, 15, and 20 mg kg-1) during this study. Canola seeds were exposed to different doses of gamma rays (0, 100, 200, 300, 400 and 500 Gy). The response of canola plant to HA and irradiation was evaluated and found to rank as following; 15 > 20 > 10 > 5 > 0 mg.kg-1 and 300 > 200 > 100 > 400 > 0 > 500 Gy respectively. We also found that treatment with irradiation 200 Gy and 300 Gy enhanced the growth, micro-nutrients (Fe, Zn, Mn and Cu) uptake and the yield of oil.

Open Access Original Research Article

Cotton Growth and Nutrient Uptake after Rock Phosphate, Gliricidia Prunings or Chemical Fertiliser Application in Soils of Semiarid Northeast Brazil

Dário Costa Primo, Rômulo Simões Cezar Menezes, Renisson Neponuceno de Araujo Filho, Aldo Torres Sales, Emmanuel Damilano Dutra, Eraldo Rodrigues da Silva, Rosa Virginia Tavares Grangeiro, Everardo Valadares de Sá Barretto Sampaio, João Lucas Aires Dias, Victor Casimiro Piscoya, Moacyr Cunha Filho

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/IJPSS/2018/44177

Several studies have demonstrated that organic fertilisers or ground rocks may be a viable alternative to industrialised chemical fertilisers in some agricultural systems. The present study aimed to compare the effects of ground phosphate rocks, gliricidia prunings and chemical fertilisers as nutrient sources to cotton (Gossypium hirsutum L.) cultivated in two types of soil (Fluvic Entisol and Oxisol) of the Brazilian semiarid northeast region. The experiment was conducted in a greenhouse at the Federal University of Pernambuco, in a completely randomised design with twelve treatments and four replications, consisting of three phosphate sources (MB-4 rock powder, Bahia rock powder and triple superphosphate), two nitrogen sources (urea and gliricidia) and a control without fertilisation. The aboveground biomass of cotton plants in the second growing cycle showed higher values of nitrogen with the combined use of gliricidia and MB4. The results indicated that the uses of green manure combined with natural phosphate may be a viable alternative to supply phosphorus and nitrogen to cotton plants in the Brazilian semiarid region. This can be a potential source of phosphorus and nitrogen in familiar agriculture and can replace mineral fertilisation.