Tropical Agriculture最新文献_第2页

ST VINCENT ARROWROOT 圣文森特箭根

IF 0.3

Tropical Agriculture Pub Date : 2017-02-24 DOI: 10.2307/4118242

G. Wright

引用次数: 1

SEA ISLAND COTTON 海岛棉

IF 0.3

Tropical Agriculture Pub Date : 2017-02-24 DOI: 10.1038/scientificamerican12111852-101c

J. Todd

引用次数: 2

THE LIVERPOOL COTTON MARKET 利物浦棉花市场

IF 0.3

Tropical Agriculture Pub Date : 2017-02-24 DOI: 10.1080/19447015608665220

R. Wood

引用次数: 0

Should the United States continue to pursue free trade agreementsA socioeconomic perspective 189 美国应该继续追求自由贸易协定吗?——社会经济观点189

IF 0.3

Tropical Agriculture Pub Date : 2016-10-07 DOI: 10.7282/T3668CXQ

E. Tavernier, A. Yadavalli

{"title":"Should the United States continue to pursue free trade agreementsA socioeconomic perspective 189","authors":"E. Tavernier, A. Yadavalli","doi":"10.7282/T3668CXQ","DOIUrl":"https://doi.org/10.7282/T3668CXQ","url":null,"abstract":"This paper examines from the perspective of New Jersey agricultural producers, whether the US should continue to pursue trade agreements. The study uses data from the 2005 National Agricultural Food and Public Policy Preference Survey. Twenty seven states participated in the survey. The New Jersey component of survey was mailed to 700 randomly selected farm operators. This number represents approximately 7% of all the farm operators in the state. A total of 162 farm operators responded to the survey, giving a response rate of 23%.\u0000The paper hypothesizes that farm and ranch operator preferences regarding trade agreements are influenced by such factors as age, farm sales, income, education, and tenure or duration of farm ownership. In particular the paper hypothesizes that there exists a positive relationship between those variables and the free trade variable. To test that hypothesis the paper uses logistic regression.\u0000The results show a positive relationship between the dependent variable and age, tenure, income and education but a negative relationship between the dependent variable and sales. The negative relationship with sales is surprising. The authors conjecture that the recent trade pact between the U.S. and Colombia is being greeted with some apprehension by respondents.","PeriodicalId":23297,"journal":{"name":"Tropical Agriculture","volume":"24 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2016-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71383804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Residual effects of phosphorus sources in grain Amaranth Amaranthus cruentus L production 98 磷源对籽粒苋菜生产的残留效应[j]

IF 0.3

Tropical Agriculture Pub Date : 2011-10-01 DOI: 10.17660/ActaHortic.2011.911.14

O. Ojo, E. Akinrinde, M. Akoroda

{"title":"Residual effects of phosphorus sources in grain Amaranth Amaranthus cruentus L production 98","authors":"O. Ojo, E. Akinrinde, M. Akoroda","doi":"10.17660/ActaHortic.2011.911.14","DOIUrl":"https://doi.org/10.17660/ActaHortic.2011.911.14","url":null,"abstract":"Productivity of grain amaranth can be improved at reduced cost through combined use of low-cost Rock Phosphate (RP) phosphorus sources as well as selection of amaranth varieties with high phosphorus (P) use efficiencies. RP sources are known to exhibit differences with respect to grain yield, disease tolerance and P use efficiency (PUE) in amaranth varieties. However, very little is known about their residual release of P. It is probable that the differential performances exhibited by the RPs might be a function of their P residual properties after cropping. Based on these premises this study was carried out to evaluate the residual effects of P sources under continuous croppings for grain amaranth production. The study was a factorial experiment with four replications. Four P sources: Single Super Phosphate – SSP, Ogun Rock Phosphate – ORP, Sokoto Rock Phosphate – SRP and control; three amaranth varieties: NH84/493, NH84/445 and NH84/452 were factorially combined with two soil types: Kaudiudult and Haplustalf. In order to monitor the residual effects of the P sources the experimental plots were cropped consecutively three times. Results from the study revealed that in the sandy loam Haplustalf, grain amaranth yield was better than that in the clayey Kaudiudult soil under a continuous cropping system. Grain yield and Relative Agronomic Efficiency (RAE) decreased with continuous cropping for SSP but increased with continuous cropping for ORP and SRP till second cropping; thereafter there was a decrease. Averaged over the three continuous consecutive croppings, SRP and ORP were 68.9% and 73.5% as effective as SSP in increasing grain yield respectively. It was concluded therefore that ORP and Haplustalf soil are best options for grain amaranth production under continuous cropping system.","PeriodicalId":23297,"journal":{"name":"Tropical Agriculture","volume":"7 1","pages":"98-107"},"PeriodicalIF":0.3,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67849266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indigenous rice-based lowland farming systems of Nupe, Nigeria 尼日利亚努佩的本土以水稻为基础的低地农业系统

IF 0.3

Tropical Agriculture Pub Date : 1998-03-01 DOI: 10.11248/JSTA1957.42.18

F. Ishida

{"title":"Indigenous rice-based lowland farming systems of Nupe, Nigeria","authors":"F. Ishida","doi":"10.11248/JSTA1957.42.18","DOIUrl":"https://doi.org/10.11248/JSTA1957.42.18","url":null,"abstract":"Gadza, a typical village where rice cultivation is carried out by the Nupe ethnic group (Niger State, Central Nigeria) was selected for the survey presented in this paper. Seven different land preparation patterns for rice cultivation were observed in the lowlands, i.e., Togogi kuru, Togoko kuru, Togogi naafena, Togoko naafena, Ewoko, Baragi and Gbaragi. Differences in land preparation patterns appear to be related to the microtoposequence and water regime. Each pattern was seasonally modified by displacing soil, with each sequence of pattern depending on rice and weed growth, water conditions and crop varieties. Moving the soil seemed to be effective for weed control, conservation of soil fertility and water retention. The biomass of weeds in a unit area under the five different land preparation patterns was less than 1/2 to 1/20 of that of the control area. Soil parts that were displaced showed larger amounts of exchangeable bases and lower amounts of exchangeable aluminum than soil parts that were not displaced. It was possible to put forward a hypothesis on the relationship between the microtopography and the seven land preparation patterns. It was suggested that instead of performing leveling and cultivation, the Nupe constructed ridges and mounds varying in shape and size in their traditional paddy fields for water control and land preparation.","PeriodicalId":23297,"journal":{"name":"Tropical Agriculture","volume":"51 1","pages":"18-28"},"PeriodicalIF":0.3,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64338668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Seasonal crude protein content of samples obtained from a tropical range pasture using oesophageal fistulated steers. 从热带牧场用食道瘘管牛获得的样品的季节性粗蛋白质含量。

IF 0.3

Tropical Agriculture Pub Date : 1972-07-01 DOI: 10.1080/00128325.1972.11662558

E. A. A. Dradu, G. Harrington

引用次数: 9

PLANT PHYSIOLOGY AND AGRICULTURE 植物生理与农业

IF 0.3

Tropical Agriculture Pub Date : 1939-11-01 DOI: 10.1080/03670074.1939.11663958

H. R. Barnell

引用次数: 0

The behaviour and diseases of the banana in storage and transport 香蕉在储运过程中的行为与病害