Winter wheat is one kind of important crop in China. It’s planting area is one key element to explain yield change. To obtain winter wheat planting area as soon as possible can provide scientific reference for our country’s making related policy. Basing on the cropping system in Shandong province, winter wheat is divided into two kinds “winter wheat sowed by machine-maize” and “people broadcast...

Nine cultivars of winter wheat were compared in organic and conventional crop rotation systems. Bread-making quality was evaluated using three parameters [thousand-kernel weight (TKW) in g, volume weight in g/l, protein content in %]. Grain yield, TKW and protein content of winter wheat in organic cropping system were significantly lower as compared to any intensity in conventional cropping sys...

A 5 yr study in the semiarid wheat production region of eastern Washington documented the relative densities of pest aphids and their natural enemies in cereal production systems using on-farm replicated plots. The systems were reduced-tillage soft white winter wheat (SWW) (Triticum aestivum L.)—summer fallow rotation; no-till soft white spring wheat (SWS)— chemical fallow rotation; continuous ...

Wheat/soybean rotation is an important double-cropping system in the Huang-Huai-Hai plain of China. Continuous soybean cropping could cause soil quality deterioration and plant growth inhibition. However, effects continuous wheat/soybean on rhizosphere microbes remain largely unknown. In this study, we compared yield microbial community between winter wheat/summer (W/S) with two harvests one ye...

Freshwater resources in the North China Plain (NCP) are near depletion due to the unceasing overexploitation of deep groundwater, by far the most significant source of freshwater in the region. To deal with the deepening freshwater crisis, brackish water (rich but largely unused water in agriculture) is increasingly being used in irrigation in the region. However, inappropriate irrigation with ...

Nitrate leaching is one of the most important pathways of nitrogen (N) loss which leads to groundwater contamination or surface water eutrophication. Clarifying the rates, controlling factors and characteristics of nitrate leaching is the pre-requisite for proposing effective mitigation strategies. We investigated the effects of interactions among chemical N fertilizer, straw and manure applica...

Two experiments using calves fed 173 d from November to May (WINTER) and yearlings fed 145 d from May to September (SUMMER), were conducted to evaluate the effects of feeding a high inclusion level of both wet distillers grains plus soluble (WDGS) and wheat straw or a corn control diet (CON) on ADG, F:G, manure N, and N losses. In each experiment, 128 steers (WINTER: 311 ± 10 kg, SUMMER: 365 ± ...

Computer models may be useful tools to design management practices for green manures, to maximize N uptake by the following crop while minimizing N losses to leaching. A previous paper tested CERES models predictions of soil processes in the absence of a crop, but did not consider effects of the crop, such as water and N uptake or shading of the soil surface. In this paper, we evaluated the abi...