soil water Articles
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Cotton subsurface drip and overhead irrigation efficiency, maturity, yield, and quality
Subsurface drip (SSD) is used as a water-efficient alternative to overhead irrigation in many crops. This study compared soil water, water use, crop maturity, lint yield, and fiber quality of cotton (Gossypium hirsutum L.) grown with SSD to cotton grown with overhead irrigation. Three experiments were conducted at two Georgia locations in 2004 and 2005. Treatments consisted of overhead irrigated, ...
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Parameterization and evaluation of the aquacrop model for full and deficit irrigated cotton
Predicting yield is increasingly important to optimize irrigation under limited available water for enhanced sustainability and profitable production. Food and Agriculture Organization (FAO) of the United Nations addresses this need by providing a yield response to water simulation model (AquaCrop) with limited sophistication. In this study, AquaCrop was parameterized and tested for cotton ...
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Modeling irrigation management strategies to maximize cotton lint yield and water use efficiency
Increasing pumping costs and declining well capacities in the Southern High Plains compel producers to seek irrigation strategies to maximize yield and water use efficiency (WUE), which is the ratio of yield to evapotranspiration (ET). Cotton (Gossypium hirsutum L.) is suited to deficit irrigation using wells ranging from 0.29 to 0.93 L s–1 ha–1 capacity to supply limited, 2.5 mm d–1, to ...
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Canopy gas exchange measurements of cotton in an open system
A portable, open transparent chamber system for measuring canopy gas exchanges was developed and tested. Differentials between incoming and outgoing atmospheric H2O and CO2 concentrations were used to calculate canopy transpiration (E) and net assimilation (A) at 10-s intervals using solenoid valve actuated sample lines connected to an infrared gas analyzer. A programmable data logger controlled ...
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The Value of the GroGuru WUGS Solution from the Irrigation Consulting Perspective
GroGuru Interview with Nich Kenny and Patrick Henry To see video, please click here Patrick: This is Patrick Henry, the CEO of GroGuru. I’m talking today with Nich Kenny. I’ve known Nich for a couple of years now. He is the Owner and Agriculture Consultant at NPK Ag. Nich is a Registered Professional Engineer with a broad agriculture background. He’s worked with a number of ...
By GroGuru
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One-Quarter of World’s Agriculture Grows in Highly Water-Stressed Areas
All living creatures need two things to survive: food and water. A new WRI analysis shows just how much tension exists between those two essential resources. A new interactive map from WRI’s Aqueduct project reveals that more than 25 percent of the world’s agriculture is grown in areas of high water stress. This figure doubles when looking at irrigated cropland, which produces 40 ...
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Optimizing Irrigation Efficiency with Smart Soil Sensor Systems
In the face of growing water scarcity and the pressing need for sustainable agricultural practices, optimizing irrigation efficiency has become a paramount concern for farmers worldwide. Traditionally, irrigation scheduling has relied on estimates and fixed schedules, often leading to overwatering or underwatering, resulting in wasted water, nutrient leaching, and reduced crop yields. The advent ...
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Farmers fine-tune research, spread their own innovations
Smallholder farmers can aid the uptake of research fruits and drive grassroots innovations. Joel Winston reports. The 1960s' Green Revolution demonstrated how technological innovations can transform agriculture. High-yielding crop strains, irrigation, fertilisers and pesticides were brought into developing countries, including India and the Philippines, increasing yields by more than 250 per ...
By SciDev.Net
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