Open Access Original Research Article

Ethanol Production Potential from Sweet Sorghum Fertilized with Filter Cake and Vinasse from the Sugarcane Industry

Eduardo Henrique Lima de Lucena, Emmanuel Damilano Dutra, Elvira Maria Regis Pedrosa, Rômulo Simões Cezar Menezes, José Nildo Tabosa, André Luiz de Carvalho, Mário Monteiro Rolim, Renisson Neponuceno de Araújo Filho, Dario Costa Primo, Jadson Emmanuel Lopes Antunes, Victor Casimiro Piscoya

Journal of Experimental Agriculture International, Page 1-13
DOI: 10.9734/JEAI/2018/42574

Sweet sorghum (Sorghum bicolor L. Moench) has high potential to produce ethanol as a complementary crop to sugarcane, whose industry generates large amounts of waste that can be used as fertilizer. The effect of using vinasse and filter cake in the sweet sorghum production was evaluated in an experiment carried out at the “Luiz Jorge da Gama Wanderley” Experimental Station (Agronomic Institute of Pernambuco - IPA) in Vitória de Santo Antão, PE, Brazil, from July to October 2013. The experimental design was randomized blocks consisting of two independent factors (five levels of vinasse application (0; 19.42; 77.68; 155.36 and 310.72 m3ha-1) and five levels of filter cake (0; 2.75; 11.0; 22.0 and 44.0 Mg ha-1), with four replicates. Sorghum stem yield and ethanol potential, wet cake weight, total recoverable sugars, reducing sugars and fiber were determined. Vinasse and filter cake promoted increases in sorghum stem, sugar, and ethanol yield. Therefore, the use of vinasse and filter cake enables the production of sweet sorghum for ethanol production complementary to sugarcane.

Open Access Original Research Article

Role of Pre-harvest Application of Paclobutrazol and Ethephon on Fruit Quality of Winter Guava cv. Sardar

Parminder Singh, Gurpinder Kaur

Journal of Experimental Agriculture International, Page 1-6
DOI: 10.9734/JEAI/2018/41852

The investigation on the role of pre-harvest application of paclobutrazol and ethephon on fruit quality of winter guava cv. Sardar was conducted in the well-maintained guava orchard of Department of Agriculture, Khalsa College, Amritsar during 2016-2017. The experiment comprised of seven pre-harvest treatments viz. Paclobutrazol @ 250 ppm, 500 ppm, 750 ppm, Ethephon @ 250 ppm, 500 ppm, 750 ppm and control. The experiment was laid out in Randomized Block Design (RBD) with three replications. Results of the study revealed that marked variations were recorded among the pre-harvest treatments on physicochemical characters of guava. Among all treatments, paclobutrazol 750 ppm treated fruits showed maximum fruit size (6.62 cm × 6.40 cm), fruit       weight (155.43 g), pulp content (87.4 %) and fruit yield (37.85 kg/plant). Whereas, the fruit bio-chemical characters were improved significantly with the use of ethephon 750 ppm (T6). Maximum TSS (10.75%), total sugars (7.89%), reducing sugars (5.86%) and ascorbic acid content (194.27 mg/100 g pulp) was observed under treatment T6 (Ethephon 750 ppm). Also, the fruits harvested from trees under treatment T6 (Ethephon 750 ppm) attained excellent fruit colour with minimum seed count.

Open Access Original Research Article

Effect of Fertilizers and Irrigation Practices on the Growth and Yield of Boro Rice in Haor Area of Bangladesh

M. S. K. Afrad, M. A. Kashem, M. A. Aziz, S. Ali

Journal of Experimental Agriculture International, Page 1-8
DOI: 10.9734/JEAI/2018/40182

The experiment was conducted at the farmers’ field, Bahadurpur village, Sunamganj Sadar upazila, Sunamganj district, during November 2014 to May 2015 to study the effect of fertilizers and irrigation practices on the growth and yield contributing characters of boro rice (cv. BRRI dhan29) in haor area. The experiment comprised two level of fertilizers viz. F1= Farmers’ practice based fertilizers (180-42-42 kg ha-1 of Urea-TSP-MoP) and F2= BARC recommended fertilizers (300-112-127-75-11 kg ha-1 of Urea-TSP-MoP-CaS04-ZnS04); and three irrigation practices viz. I1= Farmers’ practice, I2= Alternate Wetting and Drying Method, and I3= Wet method. 2x3 factorial fitted into a randomized complete block design (RCBD) experiment was laid out with five farmers’ field as replications. The plant height significantly affected due to fertilizers application at 45, 60, 75, 90 Days after transplanting (DAT) and at harvest. BARC recommended dose of fertilizers gave the longer plant (87.62 cm) at harvest whereas the shorter plant (83.98 cm) was observed in farmers practice base fertilizer application. Plant height varied significantly due to different irrigation practice at 30 and 90 DAT. The variation of number of total tillers hill-1 30, 45, 60, 75 and 90 DAT and at harvest was significant due to fertilizers application. BARC recommended dose of fertilizers gave the higher tillers number hill-1 (16.16) at 75 DAT and the lower number of tillers hill-1 (15.00) was noticed in farmers practices base fertilizer application at 75 DAT. The higher grain yield (8.54 t ha-1) and straw yield (11.09 t ha-1) were recorded due to application of BARC recommended fertilizers over Farmers’ practice based fertilizers. Among the three levels of irrigation practices wet irrigation method performed the best in respect of grain yield (8.36 t ha-1). The highest grain yield (8.86 t ha-1) was observed from the interaction of BARC recommended fertilizers with wet irrigation method. Nutrient contents in post-harvest soils were higher compared to initial soils due to application of BARC recommendation guide based fertilizers. Higher doses of fertilizer treated plots in BARC recommended fertilizers with Wet irrigation method provided the gross margin and highest benefit cost ratio (BCR) among the treatments. The overall results indicated that BARC recommended dose of fertilizers influenced the growth and yield characters of rice varieties (cv. BRRI dhan29).   

Open Access Original Research Article

Dispersion Syndrome, Ecological Sucession and Structure of the Arbor Component in an Atlantic Forest Fragment, Pernambuco

Yana Souza Lopes, Weydson Nyllys Cavalcante Raulino, Lucidalva Ferreira Sobrinho, César Henrique Alves Borges, Uaine Maria Félix dos Santos, Luiz Carlos Marangon, Ana Lícia Patriota Feliciano

Journal of Experimental Agriculture International, Page 1-13
DOI: 10.9734/JEAI/2018/42199

The Atlantic Forest is considered one of the richest areas of biodiversity on the planet. However, it has been continuously threatened and must receive strategies aiming for its restoration and conservation. Thus, the objectives of this work were to evaluate the arboreal component, to classify the ecological succession and the dispersion syndrome and to analyze the structure of a fragment located in the city of Goiana, Pernambuco. For this, 10 plots of 10 m x 25 m were allocated, where individuals with height greater than or equal to 5.0 m and chest circumference (CC) equal to or greater than 15 cm were sampled. As for dispersion syndrome, species were classified in autochoric, zoochoric and anemochoric, and ecological succession were classified in pioneers, early secondary and late secondary. For structural analysis, vegetation was divided into three classes, representing 0-50%, 50-80% and 80-100% of the maximum total height, and the diametrical structure was distributed in 7 classes with intervals of 5 cm between them. A total of 422 individuals were found, distributed in 47 species and 28 families. In relation to the dispersion syndrome, species were predominantly zoochoric. As for the ecological succession, most species of the area were early and late secondaries. Considering the diametric and hypsometric analysis, it can be seen that individuals were mainly concentrated in the first classes of diameter and height, indicating that the fragment has a high regeneration potential. Thus, with all analysis performed, it can be suggested that the studied fragment is in intermediate stage of succession.

Open Access Review Article

Harnessing the Potentials of NTFPs for National Development in Nigeria

A. G. Adedayo

Journal of Experimental Agriculture International, Page 1-10
DOI: 10.9734/JEAI/2018/42017

Development is a desirable change that brings improvement in the standard of living of majority of the people. Especially improvement in the nutritional status and health of the people, increase in their real income and per capita income as well as improvement in the educational achievement or access to education, fairer distribution of income and better livelihood options. However the potentials of NTFPs in contributing to national development in Nigeria have not been fully tapped. Therefore, this paper examined the potentials of NTFPs for national development. These potentials, namely, provision of food, provision of income, provision of communal peace and provision of medicinal materials. The study revealed some of the ways of harnessing the potentials of NTFPs in contributing to national development include revision of States forest policy, adoption of open door forest policy, Commercialization of NTFPs, improved extension service for NTFPs and promoting conservation of NTFPs. The States forestry Departments in the country should strive hard to create a unit for NTFPs that will coordinate and monitor the exploitation of NTFPs in their States and ensure their sustainable contribution to national development.