Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Haryana, India

This study documents the adoption and impacts of zero-tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State primarily drawing on a detailed empirical survey of 400 rice-wheat farmers. Our random stratified sample revealed 34.5% to be ZT wheat adopters and a quarter of the wheat area in the surveyed communities to be under ZT. The study suggests the potential for further diffusion but also flags the issue of disadoption (10%). ZT adopters, non-adopters, and disadopters differ significantly in terms of their resource bases, with adopters typically showing the most favorable values. ZT drastically reduces tractor operations in farmers’ ZT wheat fields from an average of 8 passes to a single pass, implying a saving of 6 tractor hours and 36 liters of diesel per hectare. At 4.4 tons per hectare, ZT achieved the highest wheat yields in the survey year, a significant 4.0% yield increase over conventional tillage. The higher yield and lower water use resulted in significantly higher water productivity indicators for ZT wheat. ZT did not have any significant spillover effect on the subsequent rice crop. The combination of a significant “yield effect” and “cost-saving effect” makes ZT adoption worthwhile and is the driving force behind its rapid spread and widespread acceptance, providing a much needed boost to economic returns to wheat cultivation. Based on these findings, the study provides a number of recommendations for research and development in Haryana’s rice-wheat systems.Wheat, Rice, Agricultural development, Innovation adoption, Drilling equipment, Farming systems, Zero tillage, Production costs, Credit, Income, India, Crop Production/Industries, E16, F08,

Population dynamics and conservation management of Himalayan mahseer (Tor species) in riverine aquatic ecosystem in Garhwal region of Uttarakhand (India)

The mahseer, an Indian carp (Tor species) known as ‘Sport fish’ continues to be decimated by the large scale natural and anthropogenic factors and categorized as threatened fishes in India. The present research data revealed that total species richness of 33 and 24 number of fish species were identified in river Ganga and Yamuna respectively. The size group of mahseer (400-460mm) recorded as a dominant size of catch composition and contributed about 36.8% and 42.6% based on different sampling sites in river Yamuna and Ganga respectively. The populations of Tor tor, T. putitora have shown a decreasing trend at very alarming rate and influenced the sex ratio, maturity size and natural breeding condition. Only 12.5 to 14.8% mahseer female brooders have shown maturity phase or emenable to release ova during particular breeding seasons. The fecundity of mature female fish brooders ranged from 2500-4500 no. of eggs during July-August. The current status of mahseer fishery may be attributed to the over exploitative nature in riverine system. ‘In situ and Ex-situ” breeding techniques should be practiced for enhancement of viable population size of mahseer species to restore the genetic loss under mahseer conservation programme in aquatic ecosystem of Himalayan region

Influence of home and school environments on the academic performance of Chinese-Australian and Anglo-Australian students studying at an academically-oriented high school in Perth, Western Australia

Although minority status has been associated with low academic achievement, the “high Asian achieving syndrome remains as one of the unresolved sociological puzzles. Consistent evidence suggests that regardless of the family status, children from the Asian migrant families, settled in the industrialised countries, tend to perform academically better than their counterparts from the dominant group. This disparity is attributed to a number of factors, which taken separately, do not address this complex issue. In Australia little research has been done to compare the home environment and school experiences of children coming from Chinese-Australian and Anglo-Australian families even though the number of children from the Southeast Asian region has steadily increased. This thesis investigates the influence of home and school on the academic performance of high school students coming from Chinese-Australian and Anglo-Australian families who resided in a predominantly middle class suburb and their children attended one particular state school in Perth, Western Australia. By studying children in their homes and classrooms I have attempted in this ethnographic study to construct some theoretically coherent explanations to understand the disparity in academic performance of Chinese-Australian and Anglo-Australian high school students. In order to capture what teachers, parents, and children say and do as a product of how they interpret the complexity of their world this study explores how macro and micro processes are linked to children\u27s academic performance. As this study aims to understand social events from each individual\u27s point of view it assumes that human behaviour is the result of indispensable and continuous interactions between persons and the situations they encounter. The findings of this study, with no claim to generalise beyond these families, suggest that the reason why Chinese-Australian and Anglo-Australian children have different educational outcomes is that these families socialise their children differently. From this study emerge two different models: and academic oriented Chinese-Australian model and a sports oriented Anglo-Australian model. At the start of high school there was no marked difference in ability and performance based on ethnicity. By the time they completed lower secondary school all Chinese-Australian students had improved in English and enrolled in a normal stream in English. Except for one student, they had selected TEE subjects with a university education as their main goal. At this stage, Anglo-Australians, with the exception of two students (who had selected TEE subjects), had decided to study either a mixture of TEE and TAFE subjects or easier TEE subjects. At the end of Year 12 all Chinese-Australian, except for one, had qualified to study at university. From Anglo-Australian group, only two students had qualified to study at university. This pattern of performance is consistent with the high Asian achieving syndrome and lack lustre performance of Anglo-Australian students. However, this study serves some sober reminder about the narrow focus by Chinese-Australians and lack of effort by Anglo-Australian students

Current scenario of malaria vaccine

Malaria is one of the deadliest infectious diseases that affects millions of people worldwide including India. As an addition to chemoprophylaxis and other antimalarial interventions malaria vaccine is under extensive research since decades. The vaccine development is more difficult to predict than drug development and presents a unique challenge as already there has been no vaccine effective against a parasite. Effective malaria vaccine could help eliminate and eradicate malaria; there are currently 63 vaccine candidates, 41 in preclinical and clinical stages of development. Vaccines are being designed to target pre-erythrocytic stages, erythrocytic stage or the sexual stages of Plasmodium taken up by a feeding mosquito, or the multiple stages. Two vaccines in preclinical and clinical development target P. falciparum; and the most advanced candidate is the pre-erythrocytic vaccine RTS,S which is in phase-III clinical trials. It is likely that world’s first malaria vaccine will be available by 2015 at the country level. More efficacious second generation malaria vaccines are on the way to development. Safety, efficacy, cost and provision of the vaccine to all communities are major concerns in malaria vaccine issue