The study was conducted in the subzone of unstable humidification Forest-Steppe on chernozem typical low-humus Panfil research station NSC «Institute Agriculture NAAS».The aim is to establish influence structure, set and placement field crops a 4-field crop rotation for 100 % grain saturation overall productivity, yield quality corn particular.The technology growing experiment generally accepte...

Intensive use of N fertilizers in modern agriculture is motivated by the economic value of high grain yields and is generally perceived to sequester soil organic C by increasing the input of crop residues. This perception is at odds with a century of soil organic C data reported herein for the Morrow Plots, the world's oldest experimental site under continuous corn (Zea mays L.). After 40 to 50...

The use of crop practices to reduce the weed community is an ally integrated management. Given this, study aimed identify a composition and infestation in soybean area under different predecessor crops implanted years. experiment was carried out 2019/2020 harvest Dourados, MS. experimental design randomized block with nine treatments. treatments were composed autumn-winter crops. cultivation: c...

Agricultural crop rotations have been shown to increase soil carbon (C), nitrogen (N), and microbial biomass. The mechanisms behind these increases remain unclear, but may be linked to the diversity of crop residue inputs to soil organic matter (SOM). We used a residue mixture incubation to examine how variation in longterm diversity of plant communities in agroecosystems influences decompositi...

Nebraska, US, is projected to face increased winter and spring precipitation, drier summers as the climate changes over next 20 30 years. Agricultural adaptations adjustments would be critical mitigate adverse impact of change achieve global food security. Focusing on climatic projections for our objective analyze data from a long-term (31 years; 1986–2016) rainfed agriculture experiment determ...

Several newly released crop varieties, including the perennial intermediate wheatgrass (grain marketed as Kernza®), and winter hardy oilseed camelina, have been developed to provide both economic return for farmers reduced nutrient losses from agricultural fields. Though studies indicated that these crops could reduce nitrate-nitrogen (N) leaching, little research has done determine their effec...

It is argued that the vector space measures used to measure closeness of prices and labour values are invalid because of the observed metric of commodity space. An alternative vector space within which such measures do apply is proposed. It is shown that commodity exchange can be modeled by the application of unitary operators to this space. In the recent literature relating to measuring the cl...

Tillage systems and nutrient management influence soil chemical properties that can impact the long-term sustainability of dryland production systems. This study was conducted to compare the effects of no-till (NT) and conventional till (CT) on the soil chemical properties and grain yield of a dryland winter wheat (Triticum aestivum L.)– grain sorghum [Sorghum bicolor (L.) Moench]/corn (Zea may...

Diversified crop rotation is an option for expanding producer incomes, and its adoption has presented a series of agronomic advantages compared to less diversified systems. In this context, the objective study was verify if higher-diversified systems perform economically better than low-diversified ones. To end, we conducted experiment in no-tillage areas Londrina, south Brazil, years 2014/15 2...

It is argued that the vector space measures used to measure closeness of market prices to predictors for market prices are invalid because of the observed metric of commodity space. An alternative representation in Hilbert space within which such measures do apply is proposed. It is shown that commodity exchanges can be modeled by the application of unitary operators to this space. In 1983 Farj...