scholarly journals Weedy fallow as an alternative strategy for reducing nitrogen loss from annual cropping systems

2016 ◽  
Vol 36 (4) ◽  
Author(s):  
Sam E. Wortman
Keyword(s):  
Cropping Systems ◽  
Nitrogen Loss ◽  
Alternative Strategy

Nitrogen loss by surface runoff from different cropping systems

Soil Research ◽  
2012 ◽  
Vol 50 (1) ◽  
pp. 58 ◽  
Author(s):  
P. Jiao ◽  
D. Xu ◽  
S. Wang ◽  
Y. Wang ◽  
K. Liu ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Surface Runoff ◽  
Cropping Systems ◽  
Nitrogen Loss ◽  
Cropping System ◽  
Silty Clay ◽  
N Loss ◽  
Total N ◽  
Double Cropping ◽  
Summer Fallow

Reducing nitrogen (N) loss from agricultural soils as surface runoff is essential to prevent surface water contamination. The objective of 3-year study, 2007–09, was to evaluate surface runoff and N loss from different cropping systems. There were four treatments, including one single-crop cropping system with winter wheat (Triticum aestivum L.) followed by summer fallow (wheat/fallow), and three double-cropping systems: winter wheat/corn (Zea mays L.), wheat/cotton (Gossypium hirsutum L.), and wheat/soybean (Glycine max L. Merrill). The wheat/fallow received no fertiliser in the summer fallow period. The four cropping systems were randomly assigned to 12 plots of 5 m by 2 m on a silty clay soil. Lower runoff was found in the three double-cropping systems than the wheat/fallow, with the lowest runoff from the wheat/soybean. The three double-cropping systems also substantially reduced losses of ammonium-N (NH4+-N), nitrate-N (NO3–-N), dissolved N (DN), and total N (TN) compared with the wheat/fallow. Among the three double-cropping systems, the highest losses of NO3–-N, DN, and TN were from the wheat/cotton, and the lowest losses were from the wheat/soybean. However, the wheat/soybean increased NO3–-N and DN concentrations compared with wheat/fallow. The losses in peak events accounted for >64% for NH4+-N, 58% for NO3–-N, and 41% for DN of the total losses occurring during the 3-year experimental period, suggesting that peak N-loss events should be focussed on for the control of N loss as surface runoff from agricultural fields.

scholarly journals Nitrogen Fertilization Effects on Productivity and Nitrogen Loss in Three Grass-Based Perennial Bioenergy Cropping Systems

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0151919 ◽  
Author(s):  
Brianna E. L. Duran ◽  
David S. Duncan ◽  
Lawrence G. Oates ◽  
Christopher J. Kucharik ◽  
Randall D. Jackson
Keyword(s):  
Nitrogen Fertilization ◽  
Cropping Systems ◽  
Nitrogen Loss ◽  
Fertilization Effects ◽  
Bioenergy Cropping Systems

Long-term influence of cropping systems, tillage methods, and N sources on nitrate leaching

1995 ◽  
Vol 75 (4) ◽  
pp. 497-505 ◽  
Author(s):  
R. C. Izaurralde ◽  
Y. Feng ◽  
J. A. Robertson ◽  
W. B. McGill ◽  
N. G. Juma ◽  
...  
Keyword(s):  
Nitrate Leaching ◽  
Root Zone ◽  
Cropping Systems ◽  
Nitrogen Loss ◽  
Agricultural Practices ◽  
Triticum Aestivum L ◽  
Native Forest ◽  
Fertilizer N ◽  
Hordeum Vulgare L ◽  
Forest Sites

The extent of nitrate leaching in cultivated soils of Alberta is unknown. We studied how long- and short-term agricultural practices influenced nitrate leaching in a cryoboreal subhumid soil-climate of north-central Alberta. The study used plots from three crop rotation-tillage studies at Breton on an Orthic Gray Luvisol, and from one at Ellerslie on an Orthic Black Chernozem. Soil samples were taken in the fall of 1993 from selected treatments as well as native forest sites in 0.3-m depth increments from 0 to 3.9 m and analyzed for NO3-N. No NO3− were found under native forest vegetation. NO3-N accumulated below 0.9-m depth of agricultural ecosystems cultivated for as long as 64 yr ranged from 0 to 67 kg N ha−1. At Breton, fallow-wheat rotation plots receiving fertilizer N and manure contained eight times more NO3-N below 0.9 m depth than non-fertilized plots. NO3-N levels in an 8-yr legume-based rotation and in continuous-barley plots were similar but greater than in continuous-forage plots. Eighty-seven percent of NO3− found under continuous barley occurred below the root zone compared with only 35% in the 8-yr rotation. At Ellerslie, NO3-N mass was related to fertilizer N and mineralization of soil organic matter. Increased efforts should be directed towards better synchronizing N release from or addition to soils with plant uptake. Evidence of greater nitrate leaching under zero tillage than under conventional warrants further confirmation. Key words: Nitrogen loss, fallow, Hordeum vulgare L., Triticum aestivum L., manure, legumes, synthetic fertilizer

scholarly journals Long-term incorporation of manure with chemical fertilizers reduced total nitrogen loss in rain-fed cropping systems

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Yinghua Duan ◽  
Minggang Xu ◽  
Suduan Gao ◽  
Hua Liu ◽  
Shaomin Huang ◽  
...  
Keyword(s):  
Total Nitrogen ◽  
Cropping Systems ◽  
Nitrogen Loss ◽  
Chemical Fertilizers ◽  
Total Nitrogen Loss

Growth and Economic Profitability of Castor Cultivation in the Semi-arid Zone of Haryana

2020 ◽  
pp. 300-305
Keyword(s):  
Arid Zone ◽  
Cropping Systems ◽  
Descriptive Analysis ◽  
Market Price ◽  
Transportation Cost ◽  
Castor Seed ◽  
Production Constraints ◽  
Net Profit ◽  
Semi Arid ◽  
Extract Information

The present study was carried out in three districts viz; Rewari, Sirsa and Hisar of Haryana state. A survey of 60 sampled farms was conducted to extract information pertaining to various expenses incurred in cultivation of castor and output attained as well as to ascertain the perception of farmers for various problems encountered in production and marketing of castor seed. The descriptive analysis was employed to draw valid inferences from the study. The results revealed that net profit accrued from cultivation of castor seed was ₹ 46331 ha -1 in the study area. The value of B: C ratio of castor cultivation was more than one and also higher as compared to prevalent cropping systems indicated that cultivation of castor seed is economical viable entity. However, production constraints like retention of F2 seed in the field over year, grain scattering, shortage of irrigation water, frost effect on crop yield and marketing constraints like absence of MSP, higher transportation cost sale of castor seed in distant markets, frequent fluctuation in market price, non-availability of processing units were observed.

Comparative Effect of Groundnut (Arachis hypogea l.) Genotypes on Yield and N Fixation in Sudan and Northern Guinea Savannahs of Nigeria

2019 ◽  
pp. 61-67
Keyword(s):  
Agricultural Research ◽  
Cropping Systems ◽  
Block Design ◽  
Dry Weight ◽  
Field Trials ◽  
Yield Potential ◽  
N Fixation ◽  
Maize Crop ◽  
Significant Interaction Effect ◽  
Pod Yield

Recognition of high yielding and nitrogen (N) fixing groundnut genotypes and desegregating them in the cereal-based cropping systems common in savannah regions will enhance food security and reduce the need for high N fertilizers hence, minimize the high cost and associated environmental consequences. Field trials were conducted during the 2015 growing season at the Research Farms of Bayero University Kano (BUK) and Institute for Agricultural Research (IAR), Ahmadu Bello University, Samaru-Zaria to assess the yield potential and Biolog- ical N fixation in 15 groundnut genotypes (ICG 4729, ICGV-IS 07823, ICGV-IS 07893, ICGV-IS 07908, ICGV- SM 07539, ICGV- SM 07599, ICGV-IS 09926, ICGV-IS 09932, ICGV-IS 09992, ICGV-IS 09994, SAMNUT-21, SAMNUT-22, SAMNUT-25, KAMPALA and KWANKWAS). The groundnut genotypes and reference Maize crop (SAMMAZ 29) were planted in a randomized complete block design in three replications. N difference method was used to estimate the amount of N fixed. The parameters determined were the number of nodules, nod- ule dry weight, shoot and root dry weights, pod, and haulm yield as well as N fixation. The nodule dry weight, BNF, haulm, and pod yield were statistically significant (P<0.01) concerning genotype and location. Similarly, their interac- tion effect was also highly significant. ICGV-IS 09926 recorded the highest nod- ule dry weight of 2.07mg /plant across the locations while ICGV-IS 09932 had the highest BNF value of 140.27Kg/ha. Additionally, KAMPALA had the high- est haulm yield, while ICGV-IS 07893 had the highest pod yield across the loca- tions with a significant interaction effect. The result shows that ICGV-IS 07893 and ICGV-IS 09932, as well as ICGV-IS 09994 and SAMNUT – 22, were the best genotypes concerning BNF, haulm and pod yield in the Northern Guinea and Sudan Savannahs of Nigeria respectively with the potential for a corresponding beneficial effect.

Sign in / Sign up

Export Citation Format

Share Document