نتایج جستجو برای: 9096 and 12892 tons per hectare
تعداد نتایج: 16840295 فیلتر نتایج به سال:
This study investigated the effects of different levels of manganese and zinc sulfate on the quantitative and qualitative characteristics of three irrigated wheat (Triticum aestivum L.) varieties in the Abstan region of Zagheh section of Khorramabad city in 2008-2009. The experiment was performed factorially on the basis of a randomized complete block design with three replications. Treatment...
Water management in cracked paddy soils is an important issue in rice cultivation. In order to study organic matter and zeolite effect and their interaction on moisture conditions and hydraulic and physical properties of paddy soils, the organic matter (rice straw) at four levels (0, 8, 16 and 24 tons per hectare), zeolite at four levels (0, 0.5, 1 and 1.5 percent ), and also moisture stages o...
This study integrates a biophysical model with a county-specific economic analysis of breakeven prices of bioenergy crop production to assess the biophysical and economic potential of biofuel production in the Midwestern United States. The bioenergy crops considered in this study include a genotype of Miscanthus, Miscanthus giganteus, and the Cave-in-Rock breed of switchgrass (Panicum virgatum)...
In ecological or sustainable intensification, increasing the agricultural productivity and enhancing ecosystem services is possible through improving resource and input-use efficiency. In order to estimate the radiation use efficiency and radiation interception of Fenugreek (Trigonella foenum-graecum) under different treatments of animal manure, a completely randomized block design with three r...
DDT residues in the soil of an extensive salt marsh on the south shore of Long Island averaged more than 13 pounds per acre (15 kilograms per hectare); the maximum was 32 pounds per acre (36 kilograms per hectare). A systematic sampling of various organisms from the vicinity showed concentrations of DDT increasing with trophic level through more than three orders of magnitude from 0.04 part per...
African oil palm has the highest productivity amongst cultivated oleaginous crops. Species can constitute a single crop capable to fulfill the growing global demand for vegetable oils, which is estimated to reach 240 million tons by 2050. Two types of vegetable oil are extracted from the palm fruit on commercial scale. The crude palm oil and kernel palm oil have different fatty acid profiles, w...
objective: this research was carried out as a greenhouse experiment in the form of a completely randomized factorial design (crd) in three-run sequences. the research aimed at investigating the impacts of nicosulfuron (cruz) and rimsulfuran (titus) residues on the growth of wheat in two soil types which differed in their levels of organic compounds and salinity. methods: treatment of the experi...
this study was performed for determine stability of the 18 promising barley lines and two check lines nosrat and mb-86-5 in six parts of the temperate zone including karaj, isfahan, birjand, varamin, zarghan and nishapur based on randomized complete block design)rcbd( with three replications and in two cropping seasons (2009-2011). following combined analysis, grain yield stability assessment w...
This study was performed in order to determine the distance of isolation for the seed potato production from ware potato in three regions of Ardabil, Namin and Nir. The experiment was carried out in a randomized complete block design (RCBD) with five distances (100, 200, 300, 400 and 500 meters from ware potato) and three replications with Super Elite (SE) class of Agria potato cultivar from wa...
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