Manure and nitrogen fertilizer effects on corn productivity and soil fertility under drip and furrow irrigation

2012 ◽  
Vol 58 (12) ◽  
pp. 1329-1347 ◽  
Author(s):  
Abdel F. Berrada ◽  
Ardell D. Halvorson
Keyword(s):  
Soil Fertility ◽  
Nitrogen Fertilizer ◽  
Furrow Irrigation ◽  
Corn Productivity

Effects of foliar applied nitrogen fertilizer on cotton waterlogged in a cracking grey clay

1987 ◽  
Vol 38 (4) ◽  
pp. 681 ◽  
Author(s):  
AS Hodgson ◽  
DA MacLeod
Keyword(s):  
Nitrogen Fertilizer ◽  
Furrow Irrigation ◽  
N Fertilizer ◽  
Control Treatment ◽  
Yield Response ◽  
The Third ◽  
Foliar N ◽  
Waterlogging Treatment ◽  
Applied Nitrogen

Foliar-applied nitrogen (N) fertilizer was investigated as a means of ameliorating the damage to cotton of waterlogging associated with extended furrow irrigation of a cracking grey clay. Dissolved urea was applied at 0, 5, 10 and 20 kg N ha-1 to the cotton foliage one day before furrow irrigations lasting 4, 8, 16 and 32 h. Treatments were repeated at three crop irrigations. Storms following the first two irrigations delayed the recovery from waterlogging and reduced treatment differences. However, foliar-applied N significantly increased late square and green boll numbers after the third irrigation, and produced more open bolls and heavier lint yields than the control treatment at harvest. Lint yields increased by 2.8, 5.9, 8.4 and up to 10.5 kg ha-1 per kg of foliar N applied before irrigations lasting 4, 8, 16 and 32 h, respectively. From this interaction it was concluded that foliar-applied N ameliorated the effects of waterlogging. Nevertheless, in the most severe waterlogging treatment, yield response to foliar N reached a limit, indicating that some other factor had become limiting.

scholarly journals Ways to Reduce Water Erosion on Mountainous Slope Lands

2019 ◽  
Author(s):  
V B Zaalishvili ◽  
S Kh Dzanagov ◽  
S A Bekuzarova ◽  
M Sh Gaplaev ◽  
E A Tsagaraeva ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Fertility Preservation ◽  
Nitrogen Fertilizer ◽  
Urea Formaldehyde ◽  
Water Erosion ◽  
Mineral Fertilizers ◽  
Fertilizer Treatment ◽  
Erosion Processes ◽  
Perennial Herbs ◽  
Soil Losses

The most important problem in the highland area is the development of technologies to reduce water erosion and improve soil fertility preservation. In order to restore degraded soils of slope lands, a number of measure is undertaken, among them planting crops across the slope and rational fertilizer treatment. To reduce erosion processes, mineral fertilizers were applied depending on the steepness of slope. High sections with the steepness of 9–10∘ received ammonium sulphate in a quantity of 60 kg/ha. Lower part of the slope with the steepness of 5–7∘ received ammonia nitrate as a nitrogen fertilizer in a quantity of 80 kg/ha, while the gentle sloping part with 2–5∘ had urea-formaldehyde fertilizer incorporated under winter tillage in a quantity of 50 kg/ha. At that, stripes were formed across the slope where tall-growing perennial herbs were planted: hill mustard (Bunias orentalis L.), silphium (Silphium perfaliatum), Eastern galega (Galeqa orientalis L.), cock’s foot grass (Dakfilis qlamerata L.). The research results have shown that thanks to fertilizers, yield of crops increases by a factor of 1.5–2, while soil losses reduced from 0.042 to 0.018 t/ha.

scholarly journals Renewable Mixed Hydrogels Based on Polysaccharide and Protein for Release of Agrochemicals and Soil Conditioning

2021 ◽  
Vol 13 (18) ◽  
pp. 10439
Author(s):  
Elena Khan ◽  
Kadir Ozaltin ◽  
Andres Bernal-Ballen ◽  
Antonio Di Martino
Keyword(s):  
Soil Fertility ◽  
Nitrogen Fertilizer ◽  
Water Retention ◽  
Weight Ratio ◽  
Total Weight ◽  
Average Content ◽  
Water Efficiency ◽  
Soil Conditioning ◽  
Proper Weight ◽  
Ultimate Purpose

The study deals with the combination of biopolymers to develop hydrogels intended for agriculture application. The aim is to propose a renewable and eco-compatible solution to enhance agrochemicals and water efficiency and contribute to maintaining soil fertility. We developed a set of hydrogels based on casein and chitosan for water retention and release of agrochemicals, in particular nitrogen fertilizer urea. The weight ratio of biopolymers, from 0.5 to 2, was investigated to understand the influence of their content on the morphology, swelling, swelling-drying cycles, and water retention in soil. The average content of urea in the hydrogels was 30% of the total weight, and up to 80% was released in the soil in 50 days. The biodegradation of the hydrogels in soil has been investigated by the burial method and monitoring the release of CO2. Results demonstrated that by increasing the content of chitosan, the biodegradation time is prolonged up to 20% in 90 days. The obtained results support the ultimate purpose of the work that the combination of two biopolymers at proper weight ratio could be a valid alternative of the marketed hydrogels with the final goal to promote soil fertility and water retention and prolong biodegradation.

INFLUENCE OF SOIL MANAGEMENT METHOD DURINGSTUBBLE PERIOD ON CORN PRODUCTIVITY

1970 ◽  
pp. 44-47
Author(s):  
I. Т. Tamazaev ◽  
М. R. Musaev ◽  
G. N. Gasanov
Keyword(s):  
Winter Wheat ◽  
Soil Fertility ◽  
Crop Rotation ◽  
Biomass Yield ◽  
Clay Loam ◽  
Heavy Clay ◽  
Wheat Stubble ◽  
Corn Productivity ◽  
Management Method ◽  
Yield Formation

Productivity of the natural phytocenosis and maize for silage in stubble sowings under two ways of the biomass yield usage in Kirov FSSU in Khasavyurtovskiy district in the crop rotation link “winter wheat+stubble crops+maize for grain” are studied. The soil is light-brown heavy clay loam. It was found that during stubble period after winter wheat harvesting it can be obtained 21.9 t/ha of the natural phytocenosis herbage and 33.0 t/ha maize for grain. However, cultivation of the stubble corn is associated with additional financial and material-and-technical outgoings. Plowing under of the herbage and application of fertilizers and winter wheat straw without tillage operations during nature phytocenosis yield formation contributes to improving of the soil fertility indicators. The number of agronomically the most valuable structure aggregates in the topsoil layout are increasing to 63%, soil porosity- to 54.2%, soil density is reduced to 1.20 g/ cm3, soil nutritive regime is improving. The soil fertility indicators optimization allows to increase yield of next corn in crop rotation with a phytomass plowing under to 36.2, stubble corn- to 46.0 %

scholarly journals Application of micromycete (Humicola fuscoatra) to accelerate the decomposition of grain crops straw

2020 ◽  
Author(s):  
I.V. Cherepukhina ◽  
◽  
M.V. Kolesnikova ◽  
N.V. Bezler ◽  
A.I. Gromovik ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Soil Fertility ◽  
Nitrogen Fertilizer ◽  
Decomposition Rate ◽  
Nutritional Supplement ◽  
Transformation Process ◽  
Organic Fertilizers ◽  
Barley Straw ◽  
Cereal Crops ◽  
Native Strain

One of the ways to maintain soil fertility is to use organic fertilizers. One of them can be straw of cereal crops (winter wheat and barley). However, the process of its decomposition can be delayed for several years. It is possible to accelerate the transformation process by using the native strain of cellulosolytic micromycete (Humicola fuscoatra VNIISS 016). Its introduction together with straw before plowing stabilizes agrophytocenosis. The experiments were carried out in laboratory under simulated conditions close to field ones. Scheme of the experiment: 1. Straw; 2. Straw + N (40 mg/4 g, which corresponds to 40 kg/ha); 3. Straw + N + H. fuscoatra + PC (nutritional supplement – molasses) (Kolesnikova M.V., 2014). As a result of the studies, it was established that winter wheat straw without additional components lost 0.86 g in weight (from the initial 4 g), 1.03 g when adding nitrogen fertilizer to the straw, and 1.49 g when using H. fuscoatra. We found that the addition of nitrogen to the straw stimulate the process of its transformation. Straw with nitrogen decompose faster than straw without any additives (by 41.5%). However, the addition of the native strain of micromycete accelerate the process by 48.3%. Barley straw lost 0.82 g in weight, straw with nitrogen fertilizer lost 1.06 g, straw and H. fuscoatra – 1.13 g. Further, the decomposition rate increased in the following row: straw → straw + N, where the speed was 26.7% higher → straw + N + H. fuscoatra, the decomposition rate is – 85.3% higher.

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