Jorge Peña - Böcker
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3 produkter
3 produkter
Tropical Fruit Pests and Pollinators
Biology, Economic Importance, Natural Enemies and Control
Inbunden, Engelska, 2002
2 469 kr
Skickas inom 7-10 vardagar
Insect and other pests cause major economic damage on fruit crops in the tropics. However, some insects are beneficial and have a role in pollinating flowers, thus enabling fruit set. This book reviews these injurious and beneficial organisims and how they might be controlled to enhance fruit production and quality.
Productivity in Emerging Countries
Methodology and Firm-Level Analysis based on International Enterprise Business Surveys
Häftad, Engelska, 2021
241 kr
Skickas inom 7-10 vardagar
Emerging countries are increasingly concerned with improving their competitiveness and productivity. This Element develops a robust econometric methodology, based on controlling for usual unobservable effects at the firm or plant level. By robust empirical results in total factor productivity (TFP), we mean estimating investment climate (IC) elasticities, or semi-elasticities, with equal signs and similar magnitudes for more than ten different competing TFP measures. The key to achieve similar empirical results for several TFP measures is to avoid having a problem omitted variables, achieved through imputation of large proportions of missing observations in relevant variables (i.e. the capital stock). Furthermore through the use of a new concept of aggregate TFP (tfpIC), that measures the associated IC effects on firm´s tfp, we are able to make meaningful cross-country firm´s level productivity comparisons, avoiding the usual problem of comparing 'apples with oranges' that would otherwise occur if we directly compare country's TFP measurements.
2 117 kr
Skickas inom 7-10 vardagar
Invasive arthropods cause significant damage in agricultural crops and natural environments across the globe. Potentially threatened regions need to be prepared to prevent new pests from becoming established. Therefore, information on pest identity, host range, geographical distribution, biology, tools for detection and identification are all essential to researchers and regulatory personnel. This book focuses on the most recent invasive pests of agricultural crops in temperate subtropical and tropical areas and on potential invaders, discussing their spread, biology and control.