Welcome to World Journal of Agricultural Research

World Journal of Agricultural Research is a peer-reviewed, open access journal that provides rapid publication of articles in all areas of agriculture. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of agriculture.

ISSN (Print): 2333-0643

ISSN (Online): 2333-0678

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Website: http://www.sciepub.com/journal/WJAR

   

Article

Decline in Milkweed (Asclepias syriaca) Populations in Central New Jersey over a One Year Period

1The Lawrenceville School, Lawrenceville, New Jersey, USA

2Science Department, Montgomery Township Schools, Skillman, New Jersey, USA


World Journal of Agricultural Research. 2015, 3(4), 119-122
doi: 10.12691/wjar-3-4-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Nikhil Gopal, Jamie Witsen. Decline in Milkweed (Asclepias syriaca) Populations in Central New Jersey over a One Year Period. World Journal of Agricultural Research. 2015; 3(4):119-122. doi: 10.12691/wjar-3-4-1.

Correspondence to: Nikhil  Gopal, The Lawrenceville School, Lawrenceville, New Jersey, USA. Email: nikhil2@gmail.com

Abstract

Milkweed (Asclepias syriaca) is the primary food source of the eastern North American Monarch butterfly (Danaus plexippus), and numbers have been steadily declining. Between 2012 to 2013 we conducted a survey measure to milkweed numbers in Montgomery Township New Jersey. The purpose of this survey was to examine and measure the change in milkweed numbers after a 1 year period. In October 2012, publicly accessible areas of Montgomery Township were surveyed. This same survey was repeated in 2013, and the change in mean number of milkweed plants per plot recorded. Global positioning satellite data were collected using GPS tracker 1.0 for iPhone. All plots from publicly accessible areas were measured except one plot that was intentionally cultivated. Apart from the single intentionally cultivated plot, only 2 plots remained from the original 30 in the 2012 survey (6%). From the original 302 stalks, only 87 remained one year later (a decrease of 71.9 %). A total of 3 new plots were found, indicating new growth. There was a notable decrease in the mean number of milkweed stalks per plot from 2012 (10.4 ± 2.3) to 2013 (4.3 ± 2.4). This decrease was statistically significant at the 5% level (P = 0.03958). Over a one year period, a statistically significant decline in milkweed plants was observed in central New Jersey. More should be done to conserve milkweed populations.

Keywords

References

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Article

Use of Vermicompost as Supplement to Pine Bark for Seedling Production in Nurseries

1Department of Crop Production, Faculty of Agriculture and Natural Resources, Africa University, Box 1320, Old Mutare, Zimbabwe


World Journal of Agricultural Research. 2015, 3(4), 123-128
doi: 10.12691/wjar-3-4-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Murimba Ngaatendwe, Muzorewa Ernest, Mutetwa Moses, Mtaita Tuarira, Musimbo Ngenzile, Zimba Linah Tanyaradzwa. Use of Vermicompost as Supplement to Pine Bark for Seedling Production in Nurseries. World Journal of Agricultural Research. 2015; 3(4):123-128. doi: 10.12691/wjar-3-4-2.

Correspondence to: Muzorewa  Ernest, Department of Crop Production, Faculty of Agriculture and Natural Resources, Africa University, Box 1320, Old Mutare, Zimbabwe. Email: mosleymute@gmail.com

Abstract

Vermicompost, used as soil additives or as components of greenhouse bedding plant container media, have been found to improve seed germination, enhanced seedling growth and development, and increased overall plant productivity. As a result, small scale farmers can improve their capacity to produce vegetable seedlings using vermicompost amended potting mixes as it is more available to them than pine bark. The present experiment was undertaken to evaluate the possible effects of different substitutions of vermicompost potting mixes for seedling nursery production as an alternative and supplement to pine bark. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Cabbage (Brassica oleracea var. capitata) seeds were planted in six treatment groups including vermicompost of 20%, vermicompost of 50%, vermicompost of 75% and vermicompost of 100%. Pine bark, sand and vlei soils were incorporated into the experiment making up the different supplements. Results revealed that the tallest plants were recorded from pine bark amended mixtures with vermicompost substitution of 20% and 50%. Fresh weight of roots of plants from 100% vermicompost media revealed nonsignificant (P>0.05) difference when compared to treatment with 100% pine bark. However, the same treatment of 100% pine bark gave a significantly (P<0.05) lower fresh weight of leaves in comparison to 100% vermicompost. Seedlings from 100% vermicompost treatment had the highest stem thickness. There were no significant differences for the planting media treatments applied with respect to dry weight of both the leaves and roots. A ratio of 1:1 vermicompost and pine bark gave the best results. These finding indicate that vermicompost at suitable levels may promote plant growth and development probably via the modified nutrition. Instead of using vermicompost alone, its use in mixtures with pine bark, or vlei or sand may give the same effect.

Keywords

References

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Article

Effect of Biochar from Different Origin onPhysio-Chemical Properties of Soil and Yield of Garden Pea (Pisum sativum L.) at Paklihawa, Rupandehi, Nepal

1Paklihawa Campus, Institute of agriculture and animal Sciences, Tribhuvan University, Rupandehi District, Lumbini Zone, Nepal


World Journal of Agricultural Research. 2015, 3(4), 129-138
doi: 10.12691/wjar-3-4-3
Copyright © 2015 Science and Education Publishing

Cite this paper:
Bishwoyog Bhattarai, Jasmine Neupane, Surya Prasad Dhakal, Jaya Nepal, Barsha Gnyawali, Ramsharan Timalsina, Ashmita Poudel. Effect of Biochar from Different Origin onPhysio-Chemical Properties of Soil and Yield of Garden Pea (Pisum sativum L.) at Paklihawa, Rupandehi, Nepal. World Journal of Agricultural Research. 2015; 3(4):129-138. doi: 10.12691/wjar-3-4-3.

Correspondence to: Bishwoyog  Bhattarai, Paklihawa Campus, Institute of agriculture and animal Sciences, Tribhuvan University, Rupandehi District, Lumbini Zone, Nepal. Email: bishwoyog12@gmail.com

Abstract

A field experiment was conducted at the Horticulture farm of Paklihawa Campus, Institute of Agriculture and Animal Science, Rupandehi district to observe the effect of biochar from different origin on physio-chemical properties of soil and yield of garden pea (Pisum sativum L.) and evaluate them. The experiment was laid out in a Randomized Complete Block Design with four replications. A set up constituted of various treatments viz. rice husk biochar, poultry manure biochar, sheep manure biochar, farm yard manure biochar and wood biochar along with the control group. Results showed that number of pod/plant, number of seed/pod and biomass (ton/ha) were significantly affected by application of biochar of different origin. Application of rice husk biochar had higher effect on number of pod/plant, no of seed/pod, biomass (ton/ha) and green pod yield (ton/ha). Biochar of Poultry manure and of sheep manure had almost similar effect on soil nitrogen as of other types of biochar, while higher effect on soil phosphorus and potassium as compared to other biochar. Biochar of sheep manure had higher organic matter content and carbon percentage in soil than all other application of biochar. Application of all types of biochar showed highly significant results on bulk density and particle density. It was found that biochar of rice husk had greater particle density 2.61 g/cc and all the application had decreased bulk density except that of biochar prepared from wood. Thus, the soil where biochar was applied was found to be of better quality than that of the controlled one where no biochar was used. These results suggest that biochar could be one of the best options in poor quality soil and where burning practices are mostly adopted for cleaning the field.

Keywords

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