Sustainable Cotton Production through Skill Development among Farmers: Evidence from Khairpur District of Sindh, Pakistan

This study on farmers’ training in environment friendly production practices for cotton crop was conducted in the Khairpur district of Sindh province. Data used in this study comprises baseline and post IPM Farmer Field School (FFS) impact surveys conducted during 2001 and 2003 respectively. The programme impacts were estimated on gross margins and changes in farmers’ attitude towards environment and biodiversity. The effect of training on social recognition of farmers, their experimentations abilities, and decision making skills were also examined. Beside single difference comparisons of change in production practices between trained and non-trained farmers, the difference in difference (DD) method was also used for comparisons among FFS farmers, exposed farmers and un-exposed farmers from control villages. The stochastic production frontier model incorporating inefficiency effects is also estimated to analyze the impact of farmers’ training (through FFS) on productivity and efficiency at cotton farms in the study area. Results show better cotton yield and reduction in cost of pesticides and fertilizer inputs enabled FFS farmers to fetch significantly higher gross margins (US$391/ha) than non-FFS (US$ 151/ha) and Control farms (US$ 25/ha). The total application of pesticide chemicals was largely reduced (44%) on FFS farms. The cost of inefficiency at FFS farms was lower (23.71%) as compared to those on non-FFS farms (30.50%) which implies that FFS farmers were able to maintain higher level of technical efficiency. It is concluded that the FFS approach is not only cost efficient but also improves farm level technical efficiency. Information generated through Agro-ecosystem analysis on pest and predator dynamics helps farmers to understand pest-predator interaction to allow nature to work with lesser or most appropriate interventions. A well-planned technical backup support mechanism is recommended to be evolved through integrating research system into farmer-led experimentation. The Programme achievements show that FFS approach in Pakistan has furthered from only crop management to systems management and community development approach and should be supported further to enter into mass scale expansion state.Cotton Production; Skill Development; Production Frontier; Efficiency; Pakistan

Application of Multiple Criteria Decision Models for Oilseed Crops in Pakistan’s Punjab

Pakistan is deficient in major food products. Self-sufficiency in food has virtually always been a major priority, because imports of wheat, edible oil, sugar, pulses and milk products put a massive burden on the balance of payments for the country. The increase in the production of oilseed has been a priority goal of the agricultural development policy in Pakistan. The oilseed crops have been validated as alternative crops on several target locations of different agro-ecological zones [PARC (1990)]; but the success of this validation work in terms of their dissemination is very limited. The possibility of including these crops in well established systems needed to be well conceived. The selection of farming systems, which have the potential to adopt such crops, is a prerequisite to investigate the problems and prospects of oilseed crops. The emphasis of the study is, therefore, on the identification of typical farm situations where the oilseed crops can be evaluated for their potential inclusion in the cropping plans. A real decision-making environment in agriculture involves several objectives along with their explicit targets.

Sustainable Cotton Production Through Skill Development among Farmers: Evidence from Khairpur District of Sindh, Pakistan.

This study on farmers’ training in environment-friendly production practices for cotton crop was conducted in the Khairpur District of Sindh province. Data used in this study comprises baseline and post- IPM Farmer Field School (FFS) impact surveys conducted during 2001 and 2003 respectively. The programme impacts were estimated on gross margins and changes in farmers’ attitude towards environment and biodiversity. The effect of training on social recognition of farmers, their experimentation abilities, and decision-making skills were also examined. Beside single difference comparisons of change in production practices between trained and non-trained farmers, the difference in difference (DD) method was also used for comparisons among FFS farmers, exposed farmers, and unexposed farmers from controlled villages. The stochastic production frontier model incorporating inefficiency effects is also estimated to analyse the impact of farmers’ training (through FFS) on productivity and efficiency at cotton farms in the area under study. The results show that better cotton yield and reduction in the cost of pesticides and fertiliser inputs enabled FFS farmers to fetch significantly higher gross margins (US$391/ha) than non-FFS (US$ 151/ha) and Control farms (US$ 25/ha). The total application of pesticide chemicals was largely reduced (44 percent) on FFS farms. The cost of inefficiency at FFS farms was lower (23.71 percent) as compared to those on non-FFS farms (30.50 percent), which implies that FFS farmers were able to maintain a higher level of technical efficiency. It is concluded that the FFS approach is not only cost efficient but also improves farm-level technical efficiency. Information generated through Agro-ecosystem analysis on pest and predator dynamics helps farmers to understand pest-predator interaction to allow nature to work with fewer or most appropriate interventions. A wellplanned technical back-up support mechanism is recommended to be evolved through integrating the research system into farmer-led experimentation. The programme achievements show that the FFS approach in Pakistan has furthered from only crop management to systems management and community

Affordable and accesible rolony template preparation for next-generation sequencing

Thesis (M.A.)--Boston UniversityThe first draft of the entire human genome was released in 2000, bringing with it the potential for personalized medicine in which there would be customization of health care, with practices and decisions being specially suited to each individual patient by the use of their genetic code. However, the costs and duration of the sequencing with the available technology at that time still left genome analysis out of reach for the majority of people. Since then, there has been an ongoing challenge to lower the cost of sequencing, and to make it more accessible to the public. Newer methods of genome sequencing using circularized human DNA have now been developed that have the potential to both lower the cost and speed up the process. One such method is rolony technology in which the DNA is circularized, amplified, and then fluorescent probes are ligated to the DNA template for sequencing. The order of bases is determined by fluorescence of the ligated and bound probes. The main hurdle with this technology remains the lack of good quality sequencing templates. A good template allows for a rolony to be produced that is efficient in circularization and amplification. It has been proposed that sequence and secondary structure contribute to the quality of rolony, but the exact parameters have not yet been determined. In the work describe here, different rolony templates were chosen and studied for their sequencing potential. The hypotheses tested were whether a sequence specific secondary structure was required for circularization, whether a sequence specific secondary structure was required for Rolling Circle Amplification, and if the secondary structures assisted in folding the DNA into rolonies. It was determined through various experiments that template sequence, and the secondary structure of the template are representative of the quality of rolony produced

Adoption of Recommended Varieties: A Farm-level Analysis of Wheat Growers in Irrigated Punjab

This study uses farm level data to analyse the determinants of adoption of recommended wheat varieties in irrigated Punjab, Pakistan. A notable proportion of wheat acreage is sown to non-recommended wheat varieties in the province. These cultivars had either lost (overtime) or did not have resistance against yellow rust. Farm size, education, and size of wheat enterprise on the farm are the important determinants of adoption of recommended wheat varieties while tractor ownership and irrigation source play a positive but insignificant role in the adoption decisions. Age and tenure proved to be less of a constraint towards adoption of the recommended wheat varieties. The likelihood of the adoption of recommended wheat varieties varied among tehsils, with the highest probabilities of adoption in Melsi and Arifwala tehsils of cotton-wheat zones I and II respectively.

Adoption of Recommended Varieties: A Farm level Analysis of Wheat Growers in Irrigated Punjab

This study uses farm level data to analyse the determinants of adoption of recommended wheat varieties in irrigated Punjab, Pakistan. A notable proportion of wheat acreage is sown to non-recommended wheat varieties in the province. These cultivars had either lost (overtime) or did not have resistance against yellow rust. Farm size, education, and size of wheat enterprise on the farm are the important determinants of adoption of recommended wheat varieties while tractor ownership and irrigation source play a positive but insignificant role in the adoption decisions. Age and tenure proved to be less of a constraint towards adoption of the recommended wheat varieties. The likelihood of the adoption of recommended wheat varieties varied among tehsils, with the highest probabilities of adoption in Melsi and Arifwala tehsils of cotton-wheat zones I and II respectively.Adoption; wheat varieties; Punjab; Pakistan

The Reliability of Eyewitness Testimony

As perhaps the single most effective method of proving the elements of a crime, eyewitness testimony has been vital to the trial process for centuries. However, the reliability of eyewitness testimony has recently come into question with the work of organizations such as The Innocence Project, which works to exonerate the wrongfully convicted. This thesis examines previous experiments concerning eyewitness testimony as well as court cases in which eyewitnesses provided vital evidence in order to determine the reliability of eyewitness testimony as well as to determine mitigating or exacerbating factors contributing to a lack of reliability

Zero-tillage Technology and Farm Profits: A Case Study of Wheat Growers in the Rice Zone of Punjab

The rice-wheat cropping zone of Punjab is the main producer of high-valued and fine quality basmati rice in Pakistan. The rice produced in this area is famous for its grain length and aromatic characteristics. Being an important export item, rice contributes significantly to the national foreign exchange earnings. Wheat is the other major crop of the rice-wheat system and being the staple food is central to national agricultural policies. Rice is grown on a vast area in this zone during Kharif mostly followed by wheat in the Rabi season. Studies have shown that a large gap exists between the potential and yields actually realised by the wheat growers of the area [Byerlee, et al. (1984); Hobbs (1985) and Sheikh, et al. (2000)]. Farmers’ practices regarding land preparation for paddy, wheat planting time, and other conflicts endogenous to the rice-wheat based cropping system were identified as the major factors limiting wheat yield in the area. The flooded and puddled soils that are well suited for paddy production as compared to well-drained conditions required for wheat is such an example of the system conflicts. The farmers in the rice-wheat zone of the Punjab predominantly grow basmati varieties, which are late maturing as compared to coarse varieties of rice. Therefore, paddy harvest is generally delayed at most of the farms in this zone. The late paddy harvest coupled with poor soil structure and loose plant residues create problems for preparation of a good seedbed and planting of wheat often gets late [Byerlee, et al. (1984)]. The farmers also had to resort to the broadcast method for wheat sowing which results in poor and patchy plant stands.

Zero-tillage Technology and Farm Profits: A Case Study of Wheat Growers in the Rice Zone of Punjab

This study presents the results from a field survey of the wheat growers in the rice-wheat zone of Punjab. The late maturing basmati rice varieties and the post paddy-harvest conventional tillage practices to prepare seedbed for wheat sowing often result in delayed planting of the crop. The late sowing is a major factor responsible for low wheat yields obtained by the farmers of the area. Introduction of the new zero-tillage seed drill in the area during early 1980s made it possible to sow wheat in freshly harvested untilled paddy fields utilizing residual moister. Presently, more than eighty thousand hectares of wheat are sown with zero-tillage drill technology. The partial budget analysis showed that zero-tillage is more profitable than conventional wheat sowing methods of ‘wadwatter’ or ‘rauni’. The new technology saves tillage and irrigation costs, results in yield gains through a possible improvement in sowing time and enhanced fertilizer and water use efficiencies. The results showed that the zero-tillage adopters earn an extra income of 253 and 2278 rupees per acre of wheat over that earned from wheat sown with rauni and wadwattar methods respectively. The results of multiple regression analysis confirmed that the zero-tillage technology enhances water and fertilizer use efficiency. However, sufficient evidence was not present to prove any positive or adverse affect of the technology on the incidence of weeds in wheat crop. It is suggested that this aspect of zero-tillage technology be focused more in future research.wheat; Zero-tillage; technology; irrigated Punjab; rice-wheat zone; Pakistan