crop yield Articles
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Copper distribution in chemical soil fractions and relationships with maize crop yield
Abstract Agricultural practices can lead to copper accumulation in soils and at high concentration it can become toxic for plants. One common toxic effect of copper on plants is a decrease of crop yield. Here, we studied 1) the crop yield of maize grown on plots of a soil intentionally enriched with copper sulphate and 2) the possible relationship between the copper concentration in chemical soil ...
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Testing confirms more efficient fertiliser use lifts gross margins
This article discusses how accounting for the variation in crop yield potential due to season and soil type when formulating fertiliser rates can increase profit and reduce nutrient excesses. It shows that improved estimates of yield potential can increase gross margins by A$2–$20/ha over ‘farming-for-the-average’, with higher increases on soils with lower plant-available water capacity at drier ...
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Leveraging a spatio–temporal drought severity and coverage index with crop yield modelled as a stochastic process
An analysis of spatial and temporal variation of drought impact may offer an unbiased glimpse into factors that may dictate drought severity at an apt local scale. In this study drought indices, for example, drought severity and coverage index, ISC, and, a derived crop–based drought severity and coverage index, ISC,AG, were scaled down to county levels. Drought frequency analyses showed clear ...
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Impact of agricultural water reallocation on crop yield and revenue: a case study in China
Our study area in the People's Victory Canal Irrigation District of Henan Province in China has been transferring agricultural water to the city for municipal use. This study starts with an examination of the impacts of irrigation frequency, irrigation water sources, and irrigation water supply performance on crop yield and net crop revenue, using data from a survey of 182 households in the ...
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Methods for creating stomatal impressions directly onto archivable slides
Stomatal density has been shown to be a primary determinant of crop yield, water use efficiency, and limitation to CO2 assimilation rate. Widely used methods of assessing stomatal density sample relatively small regions of the leaf, are labor intensive, or do not yield stable archivable samples for revisiting samples. We describe several methods of producing such epidermal impressions that yield ...
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In-situ soil moisture conservation: utilisation and management of rainwater for crop production
The salient results of in-situ soil water conservation technologies that have been found suitable for increasing soil moisture in the arid and semiarid lands of eastern Kenya are reviewed. The results showed that Zai pits, tumbukiza and deep tillage when used together with soil fertility improvement can increase crop yields by 4–10 times in comparison to conventionally cultivated fields. ...
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Methods for creating stomatal impressions directly onto archivable slides
Stomatal density has been shown to be a primary determinant of crop yield, water use efficiency, and limitation to CO2 assimilation rate. Widely used methods of assessing stomatal density sample relatively small regions of the leaf, are labor intensive, or do not yield stable archivable samples for revisiting samples. We describe several methods of producing such epidermal impressions that yield ...
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Accounting for adaptation in assessing impact of climatic variations on crop yields: an empirical study of Arizona
The goal of this paper is to analyze the impacts of climatic variation around current normals on crop yields and explore corresponding adaptation effects in Arizona, using a unique panel data. The empirical results suggest that both fertilizer use and irrigation are important adaptations to climate change in crop production. Fertilizer use has a positive impact on crop yields as expected. ...
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Yield editor Software for removing errors from crop yield maps
Yield maps are a key component of precision agriculture, due to their usefulness in both development and evaluation of precision management strategies. The value of these yield maps can be compromised by the fact that raw yield maps contain a variety of inherent errors. Researchers have reported that 10 to 50% of the observations in a given field contain significant errors and should be removed. ...
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Modeling olive crop yield in andalusia, spain
Andalusia (southern Spain) is the largest olive (Olea europaea L.) oil producing region in the world. This study sought to identify the main factors influencing olive fruit production in this region, by modeling pollen release as an index of flowering intensity, field floral phenology data, and meteorological data over the fruiting season in three main olive-producing provinces of Andalusia: ...
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A win for farmers and the environment
Is it possible to reduce pesticide use without compromising crop yields? Yes — and then some, according to a new study published in the journal Insects. Researchers at the University of Essex in the United Kingdom measured pesticide use and crop yield at 85 project sites in 24 Asian and African countries practicing integrated pest management — an agronomic approach that taps ...
By Ensia
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Soil properties and crop yields in response to mixed paper mill sludges, dairy cattle manure, and inorganic fertilizer application
The contribution of organic wastes to crop yields and soil fertility may be influenced by their composition and the soil type. This 6-yr study (2001–2006) evaluated the effects of repeated additions of mineral fertilizers (MF), mixed paper mill sludges (PMS) (18, 36, and 54 Mg ha–1), dairy cattle manure (DCM) (36 Mg ha–1) alone or with reduced mineral fertilizer (60% NPK) (RMF) and a control, on ...
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Water soluble fertilizers: The perfect solution - White Paper
Read the white paper now for analysis of water soluble fertilizers, including: Farmland availability to 2050 and the impact on crop yield demands The need to increase water use efficiency as a result of significant pressures on limited water supplies The importance of increasing nutrient use efficiency around the globe, with legislation even introduced in China Download this ...
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A comparison of two cotton cultivars differing in maturity for within-canopy fiber property variation
Improving uniformity in cotton (Gossypium hirsutum L.) fiber properties increases fiber processing performance. Our objective was to compare two cultivars differing in relative maturity for within-canopy variability of fiber physical properties and fiber surface chemical constituents. The cultivars (DPL 555 BG/RR [mid-full maturity] and PM 1218 BG/RR [early maturity]) were grown in plots on a ...
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Distribution of moisture and salinity under deficit irrigation and irrigation water salinity in an alternative trickle irrigation system of tape
This study was performed to investigate the horizontal and vertical distribution of soil moisture and salinity using an alternative trickle irrigation system of drip tape. Four main treatments consisting of 100, 80, 70, and 60% of the plants’ water requirements and three sub-treatments of 2.1, 4.6, and 10.2 dS/m, were conducted. Following irrigation, the soil moisture and salinity ...
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Crop yield increased with the addition on Citadel Biocat+ in the digestate
Field applications evaluations of digestate from BioCat+ treated AD plants are under way in three locations in Europe. From initial results and observations it is apparent that the BioCat+ treated digestate has an improved symbiotic effect in the crop rhizosphere. Crops of wheat and maize recently harvested have shown increases in yields of up to 23% higher yields than previously achieved on the ...
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Optimizing Crop Yield with Soil EC Sensors
Introduction: Crop yield optimization is a key goal for farmers, as it directly impacts their profitability and food production capacity. Soil EC sensors have emerged as a valuable tool in precision agriculture, helping farmers make informed decisions regarding nutrient management and irrigation practices. In this article, we will explore the benefits and applications of soil EC sensors in ...
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Assessment of climate change impact on crop yield and irrigation water requirement of two major cereal crops (rice and wheat) in Bhaktapur district, Nepal
Rice and wheat are major cereal crops in Nepal. Climate change impacts are widespread and farmers in developing countries like Nepal are among the most vulnerable. A study was carried out to assess the impact of climate change on yield and irrigation water requirement of these cereal crops in Bhaktapur, Nepal. Laboratory and soil-plant-air-water analysis showed silt-loam being the most ...
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Integrating Soil Sensors for Enhanced Productivity
Modern agriculture heavily relies on technology to increase productivity and ensure sustainability. One of the most promising technological advancements in recent years is the integration of soil sensors in farming practices. Soil sensors are devices that measure various soil properties such as moisture, nutrients, temperature, and pH levels. By providing real-time data, soil sensors can help ...
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Temporal yield variability under conventional and alternative management systems
Year to year variation in yield is an inherent risk associated with crop production and many growers rely on intensive mechanical or chemical inputs to preserve crop yield in the face of fluctuating environmental conditions. However, as interest grows in alternative crop management systems which depend less on external inputs, determining the degree to which management systems can impact the ...
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