rooting Articles
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Improve indoor farming potential & profit with accurate data
Did you know that with the right greenhouse technology you can save time, money and improve profits? The commercial growing industry is rooted in meeting the consumer demand for fresh, local and seasonal produce. Whilst growing top quality produce, commercial farmers and growers also have a responsibility to respect the natural environment. In turn, they can reap the rewards of improved profits, ...
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Late Spring Almond Irrigation
Late spring (late April to early June) is an important time in almond orchard development. During this time, the almond embryo is developing into a mature kernel. At this point in the season, proper irrigation management can be a major contributor to the difference between a marginal and major improvement in crop yield and quality. Development is complete when the kernel fills the shell ...
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Irrigation Application Management
The Irrigation Applications management takes all measurements of the inlet discharge and pressure at the pivot point and pivot end. Especially when the ground is uneven, where we take readings at the highest point. Preferably, this pressure value should be at least 5 PSI higher than the rated value of the pressure regulator, to ensure safety and proper operation, as the regulator must be ...
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Agronomic Modeling and AI Improving Results for Farmers
How does the GroGuru solution use AI to improve results seen by farmers? In a few ways! In this interview clip with Patrick Henry, CEO and our Chief Agronomist, David Sloane, they discuss the various tech specifics of how the GroGuru underground system works in regards to AI. Watch the clip here: Patrick: GroGuru doesn’t just do soil moisture, temperature sensing, and soil salinity ...
By GroGuru
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Leaf Area - How & Why Measuring Leaf Area is Vital to Plant Research
What is Leaf Area? It is easy to measure leaves, and they are also the parts of a plant most responsive to their environment. The combination of these two factors makes leaf area measurement extremely useful to scientists and growers. Besides, leaves are one of the main plant organs and are responsible for the productivity of a plant, and on a larger scale, of an ecosystem or a farm. Therefore, ...
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Leaf area - How & why measuring leaf area is vital to plant research
It is easy to measure leaves, and they are also the parts of a plant most responsive to their environment. The combination of these two factors makes leaf area measurement extremely useful to scientists and growers. Besides, leaves are one of the main plant organs and are responsible for the productivity of a plant, and on a larger scale, of an ecosystem or a farm. Therefore, an understanding of ...
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Estimating evapotranspiration using the complementary relationship and the Budyko framework
Several models have been developed to estimate evapotranspiration. Among those, the complementary relationship has been the subject of many recent studies because it relies on meteorological data only. Recently, the modified Granger and Gray (GG) model showed its applicability across 34 diverse global sites. While the modified GG model showed better performances compared to the recently ...
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Integrating genetic algorithm and support vector machine for modeling daily reference evapotranspiration in a semi-arid mountain area
Accurate estimation of evapotranspiration is vitally important for management of water resources and environmental protection. This study investigated the accuracy of integrating genetic algorithm and support vector machine (GA-SVM) models using climatic variables for simulating daily reference evapotranspiration (ET0). The developed GA-SVM models were tested using the ET0 calculated by ...
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Estimation of maize evapotranspiration using extreme learning machine and generalized regression neural network on the China Loess Plateau
Accurately estimating crop evapotranspiration (ET) is essential for agricultural water management in arid and semiarid croplands. This study developed extreme learning machine (ELM) and generalized regression neural network (GRNN) models for maize ET estimation on the China Loess Plateau. Maize ET, meteorological variables, leaf area index (LAI), and plant height (hc) were continuously ...
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Calibration of the Hargreaves–Samani method for the calculation of reference evapotranspiration in different Köppen climate classes
The Penman–Monteith equation (FAO-56) is accepted as the standard model for estimating reference evapotranspiration (ETo). However, the major obstacle to using FAO-56 widely is that it requires numerous climatic data. The Hargreaves–Samani (HS) method is frequently used for the calculation of ETo since it is based on measurements of daily minimum and maximum air temperature alone. Those are ...
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Irrigation water requirements for seed corn and coffee under potential climate change scenarios
The impact of potential future climate change scenarios on the irrigation water requirements (IRRs) of two major agricultural crops (coffee and seed corn) in Hawai'i was studied using the Irrigation Management System (IManSys) model. In addition to IRRs calculations, IManSys calculates runoff, deep percolation, canopy interception, and effective rainfall based on plant growth parameters, site ...
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Prediction of daily crop reference evapotranspiration (ET0) values through a least-squares support vector machine model
Real-time prediction of daily reference crop evapotranspiration (ET0) is the basis for estimating crop evapotranspiration and for computing crop irrigation requirements. In recent years, least-squares support vector machines (LSSVMs) have been applied for forecasting in many fields of engineering. In this paper, LSSVMs are applied to forecast ET0 using public weather forecasting data (minimum and ...
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A root-zone soil regime of wheat: physiological and growth responses to furrow irrigation in raised bed planting in northern China
Different irrigation methods in wheat (Triticum aestivum L.) result in different water and nutrient use efficiencies and, ultimately, plant growth. A field experiment was conducted during the 2006–2007 and 2007–2008 crop cycles to investigate the effects of furrow irrigated raised bed planting and the effects of flood irrigated conventional planting on growth and productivity in winter wheat. In ...
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Single irrigation can achieve relatively high production and water use efficiency of siberian wildrye grass in the semiarid agropastoral ecotone of North China
Siberian wildrye grass (Elymus sibiricus L.) is widely planted in the agropastoral ecotone of North China (APENC). Scheduled irrigation is an important approach to increase the forage yield in this semiarid region. Based on field experiments conducted in Bashang Plateau in APENC during 2002 to 2004, we studied the feasibility of applying single irrigation (SI) to increase forage yield by bringing ...
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Downward mobility of 14C-Labeled simazine in a bermudagrass system vs. a fallow soil system
Pesticides applied to bermudagrass (Cynodon dactylon L.) can be captured by the canopy, absorbed by the roots, or bound in the thatch layer, which reduces the amount available to leach compared with a fallow soil system where pesticides may be applied directly to soil. 14C-Simazine was applied to dormant bermudagrass and fallow soil in lysimeters in a cold growth chamber (5°C) (cold-fallow soil) ...
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Maize growth and yield under daytime and nighttime solid-set sprinkler irrigation
Nighttime sprinkler irrigation usually results in lower wind drift and evaporation losses (WDELs) and better irrigation uniformity compared with daytime irrigation. However, daytime sprinkler irrigation modifies the microclimatic conditions within the crop canopy which could result in improved crop growth. We studied the effect of daytime and nighttime irrigation on the growth and yield of maize ...
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Fate of indicator microorganisms under nutrient management plan conditions
Nutrient management plans (NMPs) for application of wastewater from concentrated animal feeding operations are designed to meet crop water and nutrient requirements, but implicitly assume that pathogenic microorganisms in the wastewater will be retained and die-off in the root zone. A NMP was implemented on a field plot to test this assumption by monitoring the fate of several fecal indicator ...
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Do synergistic relationships between nitrogen and water influence the ability of corn to use nitrogen derived from fertilizer and soil?
To improve site-specific N recommendations a more complete understanding of the mechanisms responsible for synergistic relationships between N and water is needed. The objective of this research was to determine the influence of soil water regime on the ability of corn (Zea mays L.) to use N derived from fertilizer and soil. A randomized split-block experiment was conducted in 2002, 2003, and ...
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