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An important aspect of below-ground crop physiology is its root foraging performance, which is inherently related to root system architecture (RSA). A 2-yr field experiment was conducted and the field-state wheat RSA was phenotyped for root foraging trait (RFT). Four RSA-derived traits, i.e. Root horizontal angle (RHA), axial root expansion volume (AREV), RSA convex hull volume (CHV) and effect...

Remote sensing systems based on consumer-grade cameras have been increasingly used in scientific research and remote sensing applications because of their low cost and ease of use. However, the performance of consumer-grade cameras for practical applications has not been well documented in related studies. The objective of this research was to apply three commonly-used classification methods (u...

Rapid emergence and uniform seedling growth are essential attributes in the production of vegetables such as carrots, whose sowing is direct field. The experiment was conducted to evaluate effect carrot seed vigor on emergence, plant development, yield. Four lots carrot, cv. Brasília were characterized for their physiological potential by germination tests. A field conducted, where seeds each l...

This paper investigates the total factor productivity (TFP) performance of NWFP agriculture crop subsector from 1970 to 2004. It identifies the sources of growth of TFP growth and assesses TFP growth changes in agriculture crop sub-sector. Data envelopment analysis (DEA) approach is used to estimate the changes in the production frontier. The Malmquist productivity index has decomposed total fa...

The 1996 Farm Bill was debated and passed during one of the best of times in U.S. agriculture and has presided over one of the worst of times in terms of crop prices, market incomes, and government payments. While it is not fair to lay all of crop agriculture’s price and income problems at the feet the 1996 legislation, it is fair to assign it much of the blame. Expectations were that the passa...

by application of climatic zoning methods, it is possible to study different agricultural aspects and then with harmony this aspects, determined similar states in a zone. today, simulation models are widely used around the world in agricultural research and education and cropland management. due to the vast extent of the agricultural activities in iran, application of such models seems to be qu...