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Roberto Jara-Rojas
University of Talca
42Publications
5H-index
155Citations
Publications 42
Newest
Published on Aug 1, 2019in Journal of Environmental Management4.87
Carlos Bopp1
Estimated H-index: 1
,
Alejandra Engler7
Estimated H-index: 7
+ 1 AuthorsRoberto Jara-Rojas5
Estimated H-index: 5
This paper examines the effectiveness of intrinsic and extrinsic motivations on the adoption intensity of sustainable agricultural practices (SAPs) among annual crop farmers in Chile. We use the farmers’ attitude towards SAPs as a proxy of intrinsic motivation, while extrinsic motivation is represented by an economic incentive to promote the use of SAPs. The policy program we studied is administered by the Chilean Ministry of Agriculture under the name System of Incentives for the Agro-Environme...
Published on May 15, 2019in Sustainability2.59
Alejandro del Pozo15
Estimated H-index: 15
,
Nidia Brunel-Saldias + 5 AuthorsMarco A. Molina-Montenegro21
Estimated H-index: 21
The world’s five Mediterranean-climate regions (MCRs) share unique climatic regimes of mild, wet winters and warm and dry summers. Agriculture in these regions is threatened by increases in the occurrence of drought and high temperature events associated with climate change (CC). In this review we analyze what would be the effects of CC on crops (including orchards and vineyards), how crops and cropping and farming systems could adapt to CC, and what are the social and economic impacts, as well ...
Published on Dec 26, 2018in Ciencia E Investigacion Agraria0.31
Sofía Boza Martínez2
Estimated H-index: 2
(University of Chile),
Roberto Jara-Rojas5
Estimated H-index: 5
(University of Talca)
The objective of this paper is to assess the effect of long-term participation in an extension program on peri-urban family farming earnings. For this purpose, a survey of a sample of 156 participants in the Local Development Program (PRODESAL) of the Chilean National Institute for Agricultural Development (INDAP) was conducted in the Metropolitan Region of Santiago. Half of the respondents were long-term participants with at least four yrs in the program, and the rest of the farmers were one-yr...
Roberto Jara-Rojas5
Estimated H-index: 5
(University of Talca),
Alejandra Engler7
Estimated H-index: 7
(University of Talca)
+ 3 AuthorsWinston Mediavilla (University of Talca)
This article applies a Logit regression model to examine the factors that contribute to the adoption of irrigation scheduling by small-scale farmers in Central Chile. Socio-economic and productive information was collected from a random sample of 112 small-scale, irrigated farms during the 2010/2011 season. One important feature of this research is the specific extension and training in irrigation scheduling received by some of the farmers. Irrigation scheduling consists of estimating the optimu...
Published on Jan 1, 2018
Carlos Bopp1
Estimated H-index: 1
,
Alejandra Engler7
Estimated H-index: 7
+ 1 AuthorsRoberto Jara-Rojas5
Estimated H-index: 5
This article examines the influence of intrinsic and extrinsic motivations, as well as the interplay between the two, on the adoption intensity of soil conservation agriculture (SCA). It seeks to understand the drivers of SCA among annual crop farmers using three conservation practices subject to be financed by an economic incentive for degraded soils in Chile; namely conservation tillage, stubble incorporation, and use of organic manure. The incentive to conservation represents an extrinsic mot...
Roberto Jara-Rojas5
Estimated H-index: 5
(University of Talca),
Boris E. Bravo-Ureta23
Estimated H-index: 23
(University of Talca)
+ 1 AuthorsDaniela Martínez Arriagada1
Estimated H-index: 1
(University of Talca)
This study analyses technical efficiency (TE) levels among small-scale raspberry producers in Central Chile. Special attention is given in to investigate the impact of the marketing channel used by the farmers on their technical performance. The data used in this study were obtained from a farm-level survey of 139 small-scale raspberry farmers. A stochastic production frontier model was used to evaluate the association between TE, extension, training and farmers’ decisions to sell their producti...
Published on Sep 16, 2017in Sustainability2.59
Lisandro Roco3
Estimated H-index: 3
,
Boris E. Bravo-Ureta23
Estimated H-index: 23
+ 1 AuthorsRoberto Jara-Rojas5
Estimated H-index: 5
Adaptation to climate change is imperative to sustain and promote agricultural productivity growth, and site-specific empirical evidence is needed to facilitate policy making. Therefore, this study analyses the impact of climate change adaptation on productivity for annual crops in Central Chile using a stochastic production frontier approach. The data come from a random sample of 265 farms located in four municipalities with different agro-climatic conditions. To measure climate change adaptati...
Published on May 1, 2017in Agricultural Systems4.13
Claudia Hunecke1
Estimated H-index: 1
(GAU: University of Göttingen),
Alejandra Engler7
Estimated H-index: 7
(University of Talca)
+ 1 AuthorsP. Marijn Poortvliet10
Estimated H-index: 10
(WUR: Wageningen University and Research Centre)
Recently, social capital has gained importance in explaining technology adoption decisions by farmers. In this paper, we examine the impact of social capital on the adoption of irrigation technology and irrigation scheduling among wine producers in Central Chile. We propose three hypotheses: that trust and networks affect positively the adoption of both technologies (H1 and H2) and that trust is positively related to networks (H3). First, we identify seven different components of social capital:...
Published on Nov 1, 2016in Water Resources Management2.99
Alejandra Engler7
Estimated H-index: 7
(University of Talca),
Roberto Jara-Rojas5
Estimated H-index: 5
(University of Talca),
Carlos Bopp1
Estimated H-index: 1
Abstract Water constraints are becoming a major restriction for different economic sectors. The agricultural sector is one of the most affected, but according to experts, the use of irrigation technologies and scheduling can keep productivity high while diminishing the use of water resources. Although irrigation technology is available, for various reasons the rate of adoption is rather low. This article uses a recursive bivariate probit model to examine the impact of social, human, and physical...
Published on Feb 1, 2016
Roberto Jara-Rojas5
Estimated H-index: 5
(University of Talca),
Boris E. Bravo-Ureta23
Estimated H-index: 23
(UConn: University of Connecticut)
+ 1 AuthorsDaniela Martínez (University of Talca)
Raspberry production has become a significant cash crop that supports the livelihood of many small-scale growers in Central Chile. Almost 100% of raspberry production is exported, and the cultivation of this crop has put pressure on smallholder farmers to integrate into the modern agri-food chain system. The goal of this article is to analyze technical efficiency (TE) levels for a sample of 139 small-scale raspberry farmers in the Maule region of Chile, the main production area for this crop in ...
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