Indian Agricultural Statistics Research Institute

About: Indian Agricultural Statistics Research Institute is a facility organization based out in New Delhi, India. It is known for research contribution in the topics: Population & Small area estimation. The organization has 454 authors who have published 870 publications receiving 7987 citations.

A two-stage fuzzy least squares procedure for fitting

Abstract: In this paper, fitting of linearized von Bertalanffy growth model is revisited when response variabe is reported in intervals corresponding to various values of explanatory variable. Earlier, Tanka’s linear programming methodology was used to handle this problem. However, this approach has several limitations, which are highlighted. Accordingly, a more efficient two stage procedure based on fuzzy least squares, is employed. The methodology is thoroughly discussed and, for its application, relevant computer programs are developed in “Nonlinear programming solver LINGO, Version 8” software package. Finally, an illustration to pearl oyster age-length data is discussed.

Influence of aqueous hexanal on quality of ‘Royal Delicious’ apple during cold storage

Abstract: The objective of the present study was to evaluate the effectiveness of aqueous hexanal in prolonging the storage life of apple cv. ‘Royal Delicious’ while maintaining its quality. The influence of different concentrations of aqueous hexanal (1 mM, 2 mM and 3 mM) as a dip treatment for 2, 3 and 4 min was tested. Fruits given no hexanal treatment were taken as control. The treated and control apple fruits were stored under 1–2 °C and 80–90% RH for a period of 90 days and evaluated for physical and biochemical changes at regular interval of 15 days. The current study demonstrated that exogenous application of 1 mM hexanal applied as dip treatment for 3 min soaking time given to ‘Royal Delicious’ apple fruits retained higher firmness, reduced decay and improved the overall quality of the fruits upto 3-month storage under 1–2 °C. To conclude, postharvest application of aqueous hexanal as dip treatment holds promise in prolonging postharvest storage life and preserving quality of apple cv. ‘Royal Delicious’.

Impact of Public Investment in Irrigation Projects on Food Grain Productivity

Abstract: The behaviour of agricultural investment inspired to investigate the true relationship between public investment and agricultural productivity. The present study attempted to examine the nature and extent of disparity in public investment in major and medium irrigation projects across states and to examine the long-run effect of public investment in major and medium irrigation in food grain productivity across the major states of India. The analysis showed that disparity among the states on the basis of expenditure on per hectare of gross cropped area in each state was marginally increased over the plan periods. The results obtained from Polynomial Distributed Lag (PDL) model showed that in Andhra Pradesh, Karnataka, and Orissa, a lag of six years was observed in attaining the 100 percent effect of public investment (major and medium irrigation) on food grain productivity while in Gujarat a lag of 9 years was observed. In Kerala, a lag of 11 years, Maharashtra and Rajasthan a lag of 7 years was observed. West Bengal, Punjab and Assam, a lag of 12 years was observed for realising the 100 percent effect of public investment in major and medium irrigation on food grain productivity.