This study was aimed at evaluating the effect of crop rotation and various tillage systems onthe chemical and biological properties of soil in the years 2013-2015. The first order factorincluded cropping systems: a) crop rotation (pea – winter wheat – spring wheat) and b)monoculture of winter wheat, whereas the second order factor were tillage systems:1) conventional (CT), 2) reduced (RT) and 3...

the increasing needs for energy, its high price and its environmental impact on greenhouse gases emission and limited energy resources due to increased research on energy balance in crop production systems. the objective of this research was to compare seedbed preparation and sowing methods in wheat production in kordkoy region with respect to energy use and efficiency. fifteen wheat fields wer...

field experiments were conducted in amirkabir sugarcane agro-industry (khuzestan province, iran) farms to evaluate the efficacy of integrated chemical and mechanical methods in controlling weeds. experiments were carried out in a split plot-randomized complete blocks design with four replications. the main plot consisted of four mechanical treatments, namely: hilling up, sweep cultivator, disc ...

Modeling of loads on a vehicle through Laplace moving averages is extended to the multivariate setting and efficient methods of computing the damage indexes are discussed. Multivariate Laplace moving averages are used as statistical models of multi-axial loads represented by forces and moments measured at some locations of a cultivator. As opposed to models based on the Gaussian distribution, t...

Incorporation of manure into cultivated soils is generally recommended to minimize nutrient losses. A 3-yr study was conducted to evaluate sediment and nutrient losses with different tillage methods (moldboard plow, heavy-duty cultivator, double disk, and no-incorporation) for incorporation of beef cattle manure in a silage barley (Hordeum vulgare L.) cropping system. Runoff depths, sediment lo...

Brow, a tall, strong, muscular man, of the cultivator caste, about 36 years of age, was admitted into the dispensary with, tetanus, which was said to have commenced four days previ? ously without apparent cause; there was no history of any wound or hurt, or of exposure to cold or wet. His state on admission was as follows :?Muscles of neck and jaw were quite rigid, so that he could not open his...

Case 1.?Rajia, Hindu male, aged 25, cultivator. Admitted 17th April, 1921. Discharged 10th June, 1921. Ulcers and Sinuses.?On admission, the patient had unhealthy looking wounds with mucopurulent discharge at the elbow and shoulder of the left arm, which he stated he had suffered from for six months. There was some surrounding infiltration and oedema. Temperature elevated. General health poor. ...