Precision Farming, Soil Nutrient Dynamics and Crop Productivity

2013 ◽  
pp. 75-118
Keyword(s):  
Nutrient Dynamics ◽  
Soil Nutrient ◽  
Crop Productivity ◽  
Precision Farming ◽  
Farming Soil

scholarly journals Irrigation practices, nutrient applications, and mulches affect soil nutrient dynamics in a young Merlot (Vitis vinifera L.) vineyard

2016 ◽  
Vol 96 (1) ◽  
pp. 23-36 ◽  
Author(s):  
Kirsten D. Hannam ◽  
Gerry H. Neilsen ◽  
Thomas A. Forge ◽  
Denise Neilsen ◽  
Istvan Losso ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Soil Carbon ◽  
Nutrient Dynamics ◽  
Management Practices ◽  
Soil Nutrient ◽  
Crop Productivity ◽  
Interactive Effects ◽  
Vitis Vinifera L ◽  
Nutrient Pools ◽  
Soil P

There is growing interest among commercial wine grape (Vitis vinifera L.) growers in reducing water and fertilizer consumption, but little information exists on how best to combine conservative irrigation and soil management practices in the vineyard. In a 3-year-old Merlot vineyard in the semi-arid Okanagan Valley, British Columbia, the interactive effects of resource-conserving micro-irrigation (drippers or microsprinkers), nutrient applications (fertigation or compost), and surface mulching (wood and bark chips) on nitrogen (N) and phosphorus (P) dynamics in the wetted zone of surface soils were examined throughout the growing season using ion-exchange resins. Treatment differences in soil carbon and major nutrient pools, temperature, and moisture were also measured. Higher NO3-N was adsorbed by resins buried under drippers than under microsprinklers except in mulched plots, where NO3-N was uniformly low. By enhancing soil carbon availability and moderating soil microclimate, surface mulches may have promoted microbial immobilisation of N. Compost applications increased soil ortho-P levels, especially on mulched plots, suggesting that both P inputs (from compost) and enhanced microbial biomass (from mulch) promoted soil P cycling. Future work will examine the interactive effects of these resource-efficient practices on leaching losses, greenhouse gas emissions, crop productivity, and fruit quality.

Nutrient cycling differs between cropped soils with century-old and recently pyrolyzed biochar

2021 ◽  
Author(s):  
Victor Burgeon ◽  
Julien Fouché ◽  
Sarah Garré ◽  
Ramin Heidarian-Dehkordi ◽  
Gilles Colinet ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Soil Solution ◽  
Nutrient Dynamics ◽  
Chemical Properties ◽  
Crop Productivity ◽  
Nutrient Concentrations ◽  
Soil Productivity ◽  
Long Term Effects ◽  
Mitigation And Adaptation

<p>The amendment of biochar to soils is often considered for its potential as a climate change mitigation and adaptation tool through agriculture. Its presence in tropical agroecosystems has been reported to positively impact soil productivity whilst successfully storing C on the short and long-term. In temperate systems, recent research showed limited to no effect on productivity following recent biochar addition to soils. Its long-term effects on productivity and nutrient cycling have, however, been overlooked yet are essential before the use of biochar can be generalized.</p><p>Our study was set up in a conventionally cropped field, containing relict charcoal kiln sites used as a model for century old biochar (CoBC, ~220 years old). These sites were compared to soils amended with recently pyrolyzed biochar (YBC) and biochar free soils (REF) to study nutrient dynamics in the soil-water-plant system. Our research focused on soil chemical properties, crop nutrient uptake and soil solution nutrient concentrations. Crop plant samples were collected over three consecutive land occupations (chicory, winter wheat and a cover crop) and soil solutions gathered through the use of suctions cups inserted in different horizons of the studied Luvisol throughout the field.</p><p>Our results showed that YBC mainly influenced the soil solution composition whereas CoBC mainly impacted the total and plant available soil nutrient content. In soils with YBC, our results showed lower nitrate and potassium concentrations in subsoil horizons, suggesting a decreased leaching, and higher phosphate concentrations in topsoil horizons. With time and the oxidation of biochar particles, our results reported higher total soil N, available K and Ca in the topsoil horizon when compared to REF, whereas available P was significantly smaller. Although significant changes occurred in terms of plant available nutrient contents and soil solution nutrient concentrations, this did not transcend in variations in crop productivity between soils for neither of the studied crops. Overall, our study highlights that young or aged biochar behave as two distinct products in terms of nutrient cycling in soils. As such the sustainability of these soils differ and their management must therefore evolve with time.</p>

Systematic Evaluation of Precision Farming Soil Sampling Requirements

2015 ◽  
pp. 253-265 ◽  
Author(s):  
David E. Clay ◽  
C. G. Carlson ◽  
J. Chang ◽  
S. A. Clay ◽  
D. D. Malo ◽  
...  
Keyword(s):  
Precision Farming ◽  
Soil Sampling ◽  
Systematic Evaluation ◽  
Farming Soil

Year-Round Soil Nutrient Dynamics from Broiler Litter Application to Three Bermudagrass Cultivars

2004 ◽  
Vol 96 (2) ◽  
pp. 525-530 ◽  
Author(s):  
K. R. Sistani ◽  
G. E. Brink ◽  
A. Adeli ◽  
H. Tewolde ◽  
D. E. Rowe
Keyword(s):  
Nutrient Dynamics ◽  
Soil Nutrient ◽  
Broiler Litter

Long-Term Effects of Grazing and Haying on Soil Nutrient Dynamics in Forage-Based Beef Cattle Operations

2007 ◽  
Vol 29 (3) ◽  
pp. 115-134 ◽  
Author(s):  
Gilbert C. Sigua ◽  
Mary J. Williams ◽  
Samuel W. Coleman
Keyword(s):  
Beef Cattle ◽  
Nutrient Dynamics ◽  
Soil Nutrient ◽  
Long Term Effects

How Do Agricultural Practices Modify Soil Nutrient Dynamics in CCB?

2018 ◽  
pp. 153-161
Author(s):  
Yunuen Tapia-Torres ◽  
Pamela Chávez Ortiz ◽  
Natali Hernández-Becerra ◽  
Alberto Morón Cruz ◽  
Ofelia Beltrán ◽  
...  
Keyword(s):  
Nutrient Dynamics ◽  
Agricultural Practices ◽  
Soil Nutrient

scholarly journals Soil Nutrient Dynamics and Nitrogen Fixation Rate Changes over Plant Growth in Temperate Soil

Agronomy ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 179 ◽  
Author(s):  
Ágota Horel ◽  
Györgyi Gelybó ◽  
Imre Potyó ◽  
Klára Pokovai ◽  
Zsófia Bakacsi
Keyword(s):  
Nitrogen Fixation ◽  
Nutrient Dynamics ◽  
Plant Biomass ◽  
Soil Nutrient ◽  
Initial Increase ◽  
Pepper Plant ◽  
Plant Interactions ◽  
Fixation Rate ◽  
Total N ◽  
Fiber Sludge

Research on the use of soil enhancer materials such as biochar from soil chemical perspective still provide differing results; therefore, investigations focusing on soil-biochar-plant interactions are still necessary to constrain our understanding of complex biochar effects. The present study investigated the changes in biological nitrogen fixation rates (BNF) and overall nutrient dynamics (NO3−, NH4+, total N, K2O, and P2O5) during the growth of Capsicum annuum (pepper) in pot experiments amended with biochar made of paper fiber sludge and grain husk. Four treatments were studied with 0, 0.5%, 2.5%, and 5.0% (by weight) added biochar (BC) amount to temperate silt loam soil. Peppers were planted at 2–4 leave stages and grown for the duration of 12.5 weeks. Our results showed that total nitrogen had relatively small changes in all treatments over time compared to the dynamic changes observed in the case of inorganic nutrients. NO3−-N and NH4+-N abundances presented a continuous decrease during the course of the study after an initial increase. The pepper plant facilitated the BNF rates to triple in the control soils, while plants were in the growing phase (weeks 1–6), which further increased an additional 61% by harvesting (week 12). A high amount of biochar addition suppressed potential BNF rates of the investigated soil, indicating its potentially negative effects on soil indigenous microbial communities if added in excess. We also found a plateau in plant biomass production that after reaching an optimal (2.5%) biochar amendment in the soils, and excess biochar addition did not result in significant changes in the soils’ pH to achieve better nutrient (potassium, nitrogen, phosphorous) use or crop growth.

Sign in / Sign up

Export Citation Format

Share Document