American Journal of Agriculture 2023-05-26T16:08:51+03:00 Journal Admin Open Journal Systems <p>America Journal of Agriculture is a high factor journal accredited for its vital insight information published by AJPO Journals USA LLC. The journal aims at advancing agriculture in all its areas that include arid soil research and rehabilitation, agriculture genomics, stored product research, tree fruit production, agronomy, weed biology, pesticide science, post-harvest biology and technology. Its indexed in google scholar, Crossref (DOI), Ebscohost, Research Gate among others.</p> Different Limes' Impact on the Soil's Structure and Sweet Potato Produce in China, Mainland 2023-03-29T00:52:21+03:00 Prof. Yuan Huang <p><strong>Purpose: </strong>The purpose of this study was to evaluate the quality of agricultural and local liming materials, their impact on selected soil physical and chemical properties and production of sweet potatoes in China, mainland.</p> <p><strong>Methodology: </strong>The study used a desktop literature review methodology (desk study). This required a thorough analysis of research on the effectiveness of agricultural and local liming materials, their influence on the physical and chemical qualities of soil, and sweet potato production. The subject of the study underwent three phases of sorting in order to assess its suitability for further study.</p> <p><strong>Findings: </strong>A few physical and chemical tests on agricultural and local limes revealed a range in the quality of the liming materials. Significant CCEs are seen in both agricultural goods and rusizi limes (86.36 percent and 85.46 percent, respectively). This implied that the two liming materials were comparable. Lower CCE was found in lime from Karongi and Musanze (68.48 and 66.2 percent, respectively).</p> <p><strong>Unique Contribution to Theory and Practice:</strong> According to this study, acidic soils on the China mainland should be treated with Musanze lime at a rate of 2 to 4 t ha-1 to effectively raise the pH to values that are best for growing potatoes. If the government or non-governmental organizations decide to invest in the local lime production in order to increase their efficiency, a grinding to at least &gt;60% of fineness factor should be taken into consideration.</p> <p>&nbsp;</p> 2023-04-17T00:00:00+03:00 Copyright (c) 2023 American Journal of Agriculture Evaluation of the Risk of Epidemiology against Leafspot in Some Farmers Traditional Systems on Groundnut (Arachis hypogaea L.) Conservation in Cameroon Using Cramer’s Modified Test 2023-05-26T16:08:51+03:00 Akoa Akoa Clément Eya’a Mbo’o Nkoulou Obilima Armand Martin Martin <p><strong>Purpose:</strong> The main objective of this study is to evaluate the epidemiology risk of cercospora leaf spot in groundnut’s protection into some farmers in Cameroon,</p> <p><strong>Methodology:</strong> The research adopted new approches like Cramer’s modified test after the factorial analysis of components (fac). 224 farmers were investigated during this experimentation by answers to 8 questions about methods of protection against cercospora. Globally the test shows that the impact of this pathology is moderated and the value is 0.86, finding value after the use twice Cramer’s modified test and a modified scale.</p> <p><strong>Findings:</strong> This result explain why farmers in Cameroon continue to produce in spite of the encrease of this pathology around the word. And we observe that the variables of production in zone 1 and zone 2 are very different.</p> <p><strong>Recommendations: </strong>The factorial analyses components of 224 groundnut’s farmers show the presence of and the different models of in situ conservation in the north and south region in Cameroon. These two agro-ecological area are differed by variables which characterizes every location. The V’ epidemiological risk test shows that leaf spot risk is moderated (0.86) because the Cramer’s test who represents the intensity of knowledge about these diseases is weak (0.14). This reason explains why groundnut production is also sustainable in regard of the lost of yields by these pathologies around the world. Cameroon cannot use or import in high quantities chemical products to manage this disease, because his armful for the moment is very weak.&nbsp;&nbsp;</p> <p>&nbsp;</p> 2023-05-26T00:00:00+03:00 Copyright (c) 2023 American Journal of Agriculture Angola's Agricultural Productivity and the Agricultural Sector Development Strategy 2023-03-29T00:31:27+03:00 Dr. Beatriz Bernardo <p><strong>Purpose: </strong>The purpose of this study is to investigate the agricultural sector development strategy has affected agricultural productivity in Angola<strong>.</strong></p> <p><strong>Methodology: </strong>The paper used a desk study review methodology where relevant empirical literature was reviewed to identify main themes and to extract knowledge gaps.</p> <p><strong>Findings: </strong>The study concluded that climate change response, agribusiness, agricultural extension services and access to agricultural credit positively and significantly influence agricultural productivity.</p> <p><strong>Unique Contribution to Theory and Practice: </strong>Angola as a country should implement agricultural extension services by ensuring there is enough staff in the country who are regularly capacity built so as to improve the agricultural productivity of the country.</p> <p>&nbsp;</p> 2023-04-17T00:00:00+03:00 Copyright (c) 2023 American Journal of Agriculture