crop yield Articles
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Dryland crop yields and soil organic matter as influenced by long-term tillage and cropping sequence
Novel management practices are needed to improve the declining dryland crop yields and soil organic matter contents using conventional farming practices in the northern Great Plains. We evaluated the 21-yr effect of tillage and cropping sequence on dryland grain and biomass (stems + leaves) yields of spring wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), and pea (Pisum sativum L.) and ...
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Effects of planting pattern and fungicide application systems on ascochyta blight control and seed yield in chickpea
Improved cultural practices can be used to manage ascochyta blight in chickpea (Cicer arietinum L.), a disease caused by Ascochyta rabiei (Pass.) Labrousse. This study examined the effect of planting pattern, seeding rate, and fungicide application systems on ascochyta blight severity and crop yield of chickpea at Swift Current (50°25' N, 107° 44' W), SK, Canada, in 2004 and 2005. Crop was grown ...
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Cover crop and nitrogen effects on maize productivity in no-Tillage Systems of the Brazilian cerrados
Cover crops in direct seeding mulch-based cropping (DMC) systems can be an effective tool to optimize N management for crop production in the Brazilian cerrados. The objective of this study was to determine the effect of four cover crops on maize (Zea mays L.) grain yields in two fields that had been under DMC for 3 and 14 yr. We hypothesized that cover crops would optimize N supply to the maize ...
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Cover Crop and nitrogen effects on maize productivity in no-tillage systems of the Brazilian Cerrados
Cover crops in direct seeding mulch-based cropping (DMC) systems can be an effective tool to optimize N management for crop production in the Brazilian cerrados. The objective of this study was to determine the effect of four cover crops on maize (Zea mays L.) grain yields in two fields that had been under DMC for 3 and 14 yr. We hypothesized that cover crops would optimize N supply to the maize ...
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High yielding organic crop management decreases plant-available but not recalcitrant soil phosphorus
Phosphorus is a nonrenewable resource, raising concerns that agricultural practices may deplete reserves. Organic farming with low P inputs can result in deficient levels of plant-available phosphorus (available-P). The purpose of this study was to determine if common organically managed rotations are depleting P reserves or if large reserves still exist in unavailable forms. The research was ...
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High yielding organic crop management decreases plant-available but not recalcitrant soil phosphorus
Phosphorus is a nonrenewable resource, raising concerns that agricultural practices may deplete reserves. Organic farming with low P inputs can result in deficient levels of plant-available phosphorus (available-P). The purpose of this study was to determine if common organically managed rotations are depleting P reserves or if large reserves still exist in unavailable forms. The research was ...
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Nitrogen economy of pulse crop production in the northern great plains
Previously published data were used to examine the N economy of pulse crops typically grown on the Northern Great Plains with the goal of assessing the potential contribution of field pea (Pisum sativum L.), lentil (Lens culinaris Medik.), chickpea (Cicer arietinum L.), common bean (Phaseolus vulgaris L.), and faba bean (Vicia faba L.) to soil N accretion. Incremental changes in soil N associated ...
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Tillage effects on water use and grain yield of winter wheat and green pea in rotation
Under water-limited conditions, increasing water use efficiency (WUE) is essential for successful crop production. A 7-yr study (1977–1982, and 1985) to evaluate tillage and tillage timing effects on soil water storage, crop water use, and grain yield of winter wheat (Triticum aestivum L.) and spring green pea (Pisum sativum L.) in rotation, was conducted near Pendleton, OR. Treatments included ...
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Hit the Spring Planting Target with Hydraulic Down Force
Will Hutchinson enjoys a good challenge, especially when it comes to improving production on his row crop, wheat and alfalfa farm near Murfreesboro, Tennessee. So when he saw the opportunity to leverage Ag Leader’s Hydraulic Down Force system to prevent a common problem and improve his planting operations on acres where he plants cover crops, he jumped at the chance. Two years later, ...
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Symbiotic and growth performance of supernodulating forage pea lines
The exploitation of nitrate-tolerant symbiosis (nts) mutants of pulse legumes is limited by the accompanying supernodulation trait, which causes uncontrolled initiation of excessive symbiotic nodules on the root. The resulting disproportion between the photosynthetic capacity and the catabolic activity of nodules leads to growth deprivation, regardless of the desirable enhancement of symbiotic N ...
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Forage potential of intercropping barley with faba bean, lupin, or field pea
Annual cool-season grain legumes grown in mixtures with barley (Hordeum vulgare L.), may offer advantages over barley sole crops for forage production. Our objective was to evaluate the effects of intercropping ‘Snowbird’ tannin-free faba bean (Vicia faba L.), ‘Arabella’ narrow-leafed lupin (Lupinus angustifolius L.), and ‘Cutlass’ field pea (Pisum sativum L.), along with legume planting ...
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Transition from intensive tillage to no-tillage and organic diversified annual cropping systems
Transition to no-till (NT) and organic (ORG) farming systems may enhance sustainability. Our objectives were to compare transitional crop productivity and soil nutrient status among diversified NT and ORG cropping systems in Montana. Three NT systems were designed as 4-yr rotations, including a pulse (lentil [Lens culinaris Medik.] or pea [Pisum sativum L.]), an oilseed (canola [Brassica napus ...
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Seed yield and yield stability of chickpea in response to cropping systems and soil fertility in northern latitudes
Improved cultural practices are required to enhance the adaptability of chickpea (Cicer arietinum L.) in northern latitudes. Field experiments were conducted to determine the effects of cropping systems, cultivar choices, and soil fertility on the stand establishment, seed yield, and yield stability of chickpea in northern latitudes. Four cultivars were tested in no-till barley (Hordeum vulgare ...
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Seed yield and yield stability of chickpea in response to Cropping Systems and soil fertility in Northern Latitudes
Improved cultural practices are required to enhance the adaptability of chickpea (Cicer arietinum L.) in northern latitudes. Field experiments were conducted to determine the effects of cropping systems, cultivar choices, and soil fertility on the stand establishment, seed yield, and yield stability of chickpea in northern latitudes. Four cultivars were tested in no-till barley (Hordeum vulgare ...
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Effects of estimating soil hydraulic properties and root growth factor on soil water balance and crop production
Accurate simulation of plant growth depends not only on plant parameters, but also on soil parameters. Although there is uncertainty in measured soil parameters and root distributions, their effects on simulated plant growth have been much less studied. This study evaluates the simulated responses of six crops, wheat (Triticum aestivum L.), maize (Zea mays L.), barley (Hordeum vulgare L.), ...
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Seeding rate and planting arrangement effects on growth and weed suppression of a legume-oat cover crop for organic vegetable systems
Winter cover crops can add soil organic matter, improve nutrient cycling, and suppress weeds in organic vegetable systems. A 2-yr study was conducted on organic farms in Salinas and Hollister, CA, to evaluate the effect of seeding rate (SR) and planting arrangement on cover crop density, ground cover, and cover crop and weed dry matter (DM) with a mixed cover crop. The mix contained legumes (35% ...
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Agronomic performance of different pea cultivars under various sowing periods and contrasting soil structures
Yield variability of spring pea (Pisum sativum L.) in farmers' fields is mainly due to soil compaction at sowing and abiotic stresses during the reproductive period. Winter peas flower earlier, and thus should be less sensitive to abiotic stress at the end of the cycle, but because of their sensitivity to frost they must be sown late in autumn when soils are very wet. Pea breeders are working on ...
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It’ll all be for the same purpose: to maximize the yield and take care of that soil
Brad McDougald jokes that farmers can always find something to complain about. “Doesn’t matter whether it’s too warm, too dry, too cold,” McDougald says with a chuckle. This year was a dry season in Drumheller, Alta., where his 2,500-acre farm produced about 40 per cent of its regular yield of wheat, canola, peas, lentils and barley. But for all the elements outside a ...
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