scholarly journals Evaluation of effects of water-saving superabsorbent polymer on corn (Zea mays L.)yield and phosphorus fertilizer efficiency

2016 ◽  
Vol 40 ◽  
pp. 365-378 ◽  
Author(s):  
Adem GÜNEŞ ◽  
Nurgül KITIR ◽  
Metin TURAN ◽  
Erdal ELKOCA ◽  
Ertan YILDIRIM ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Water Saving ◽  
Fertilizer Efficiency ◽  
Superabsorbent Polymer ◽  
Phosphorus Fertilizer

scholarly journals Feasibility of summer corn (Zea mays L.) production in drought affected areas of northern China using water-saving superabsorbent polymer

2011 ◽  
Vol 57 (No. 6) ◽  
pp. 279-285 ◽  
Author(s):  
M. Robiul Islam ◽  
Z. Zeng ◽  
J. Mao ◽  
A. Egrinya Eneji ◽  
X. Xue ◽  
...  
Keyword(s):  
Zea Mays ◽  
Crop Production ◽  
Zea Mays L ◽  
Management Practice ◽  
Northern China ◽  
Water Saving ◽  
Growth And Yield ◽  
Corn Yield ◽  
Superabsorbent Polymer ◽  
Very High

In arid and semiarid regions of northern China, there is an increasing interest in using water-saving superabsorbent polymer (SAP) for field crop production. Experiments were conducted during 2009 and 2010 to study the growth and yield characteristics of summer corn (Zea mays L.) under different (control, 0; low, 10; medium, 20; high, 30 and very high, 40 kg/ha) rates of SAP in a drought-affected field of northern China. Corn yield increased slightly following SAP application at low and medium rate, but significantly at high and very high rates by 22.4 and 27.8%. At the same time, plant height, stem diameter, leaf area, biomass accumulation, harvest index and relative water content as well as protein, sugar and starch contents in the grain increased significantly following SAP treatments. The optimum application of superabsorbent polymer for corn cultivation in the study area would be 30 kg/ha as it best increased the grain yield and quality and maintained higher levels of soil nutrients. Lower rates (10 and<br />20 kg/ha) or higher (&ge; 40 kg/ha) rates would neither be sufficient nor economical. We suggest that the application of SAP at 30 kg/ha could be an efficient and economic soil management practice for summer corn production in the drought affected regions of northern China or other areas with similar ecologies.

scholarly journals Study on Water Saving Potential and Net Profit of Zea mays L.: The Role of Surface Mulching with Micro-Spray Irrigation

2020 ◽  
Vol 10 (1) ◽  
pp. 402
Author(s):  
Zhaoquan He ◽  
Xue Shang ◽  
Tonghui Zhang
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Organic Fertilizer ◽  
Significant Negative Correlation ◽  
Water Saving ◽  
Total Water ◽  
Maximum Increase ◽  
Economic Profit ◽  
Straw Mulching ◽  
Spray Irrigation

Water shortage threatens agricultural sustainability in Horqin Sandy Land, northeast China. To explore the effects of various surface mulching patterns with micro-spray irrigation on the yield, water consumption (ETc), and water-saving potential of maize (Zea mays L.), we used three treatments: straw mulching (JG), organic fertilizer mulching (NF), and no mulching (WG; control). In each treatment, plants were supplied with 500 mm of total water (irrigation plus precipitation) during the entire growing season and were irrigated with the amount of total water supply minus precipitation. Yield and water use efficiency (WUE) showed a significant negative correlation with water saving potential per unit yield (Py) and water saving potential per unit area (Sp), which were also consistent with their relationships in the function model. Meanwhile, a remarkably positive correlation occurred between yield, WUE, and net economic profit, respectively. The JG treatment, which was mainly affected by light and temperature production potential (Yc), grain yield, and ETc, showed the lowest Py (0.16 m3 kg−1) and Sp (2572.31 m3 hm−2), and the maximum increase in yield, WUE, and net economic profit, extending to 16,178.40 kg hm−2, 3.25 kg m−3, 17,610.09 yuan hm−2, respectively, which were significantly higher than those in NF and WG, (p <0.05). Thus, straw mulching with micro-spray irrigation was the best treatment for maximizing yield and WUE. Organic manure mulching and no mulching need further investigation, as these showed high Py and Sp, which were together responsible for lower WUE.

scholarly journals CRESCIMENTO E FOTOSSÍNTESE DO MILHO CULTIVADO SOB ESTRESSE SALINO COM ESTERCO E POLÍMERO SUPERABSORVENTE

Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 603-616
Author(s):  
Vanessa Ohana Gomes Moreira ◽  
Raimundo Nonato De Assis Júnior ◽  
Túlio Cordeiro Aragão
Keyword(s):  
Zea Mays ◽  
Root Length ◽  
Dry Matter ◽  
Zea Mays L ◽  
Photosynthetic Capacity ◽  
Saline Stress ◽  
Initial Growth ◽  
Superabsorbent Polymer ◽  
Biometric Parameters ◽  
E Mail

CRESCIMENTO E FOTOSSÍNTESE DO MILHO CULTIVADO SOB ESTRESSE SALINO COM ESTERCO E POLÍMERO SUPERABSORVENTE     VANESSA OHANA GOMES MOREIRA1; RAIMUNDO NONATO DE ASSIS JÚNIOR2 E TÚLIO CORDEIRO ARAGÃO3   1Engenheira Agrônoma, Mestra e Doutoranda em Ciência do Solo, Departamento de Ciência do Solo, Programa de Pós-Graduação em Ciência do Solo, Universidade Federal do Ceará, Campus do Pici – Bloco 807, CEP 60356-000, Fortaleza, Ceará, Brasil. E-mail: [email protected] 2Engenheiro Agrônomo, Doutor em Agronomia - Solos e Nutrição de Plantas, Professor Titular, Departamento de Ciência do Solo, Universidade Federal do Ceará, Campus do Pici – Bloco 807, CEP 60356-000, Fortaleza, Ceará, Brasil. E-mail: [email protected] 3Graduando em Química. Departamento de Química, Universidade Federal do Ceará, Campus do Pici - Bloco 940, CEP 60440-900, Fortaleza – Ceará, Brasil. E-mail: [email protected]     1 RESUMO   Esse trabalho objetivou avaliar o uso de esterco bovino e polímero iônico superabsorvente no crescimento inicial e na capacidade fotossintética de plantas de milho cultivadas em Neossolo Quartzarênico salino-sódico. O experimento foi instalado em casa de vegetação com quatro tratamentos: T1 - Controle; T2 – Polímero; T3 - Esterco bovino; T4 - Polímero + Esterco bovino. Foram avaliados os parâmetros biométricos: altura das plantas, diâmetro do colmo, área foliar, massa seca da parte aérea, comprimento e massa seca da raiz aos 45 dias após a emergência (DAE) das plantas. A fotossíntese foi avaliada em três momentos: aos 15, 30 e 45 DAE. Houve diferenças significativas pelo teste F (p < 0,05) nos parâmetros biométricos avaliados e na taxa de fotossíntese. As menores médias das variáveis analisadas foram obtidas no tratamento controle. A aplicação do polímero resultou em médias dos parâmetros biométricos e da fotossíntese estatisticamente menores que as médias do esterco bovino. A combinação de polímero e esterco promoveu incremento na capacidade fotossintética e no comprimento da raiz. Conclui-se que, o esterco é mais eficiente que o polímero na melhoria do crescimento inicial do milho sob estresse salino e, quando combinados, promovem maior capacidade fotossintética e maior crescimento das raízes.    Palavras-chave: salinidade do solo, hidrogel, adubo orgânico, Zea Mays L.     MOREIRA, V. O. G.; ASSIS JÚNIOR, R. N.; ARAGÃO, T. C. GROWTH AND PHOTOSYNTHESIS OF MAIZE CULTIVATED UNDER SALINE STRESS WITH MANURE AND SUPERABSORBENT POLYMER     2 ABSTRACT   This work aimed to evaluate the use of bovine manure and ionic superabsorbent polymer in the initial growth and in the photosynthetic capacity of maize cultivated in saline-sodium Quartzarenic Neosol . The experiment was installed in a greenhouse with four treatments: T1 - Control; T2 - Polymer; T3 - Bovine manure; T4 - Polymer + Bovine manure. Biometric parameters were evaluated: plant height, stem diameter, leaf area, aerial part dry matter, root length and root dry matter at 45 days after emergence (DAE). The photosynthesis was evaluated in three moments: at 15, 30 and 45 DAE. Significant differences were observed by the F test (p <0.05) in biometric parameters evaluated and photosynthesis rate. The application of the polymer resulted in lower averages than those of the bovine manure for all biometric parameters and photosynthesis. The combination of polymer and bovine manure promoted an increase in photosynthetic capacity and in root length. It is concluded that bovine manure is more efficient than polymer in improving the initial growth of maize under saline stress and when combined promote increase in rate of photosynthesis and root growth.   Keywords: soil salinity, hydrogel, organic fertilizer, Zea Mays L.

scholarly journals Effects of Nitrogen and Phosphorus Fertilizer Rates on Maize (Zea mays L.) Growth and Yields in Terraced Lands of Medium and High Altitude Regions of Rwanda

2020 ◽  
Author(s):  
A. Fashaho ◽  
A. O. Musandu ◽  
J. J. Lelei ◽  
S. M. Mwonga ◽  
G. M. Ndegwa
Keyword(s):  
Zea Mays ◽  
High Altitude ◽  
Zea Mays L ◽  
Block Design ◽  
Fertilizer Application ◽  
Phosphorus Fertilizer ◽  
Nitrogen And Phosphorus ◽  
Maize Yields ◽  
Four Levels ◽  
Fertilizer Rates

Depletion of nitrogen and phosphorus in terraced hilly areas of Rwanda has lowered maize (Zea mays L.) production. Trials were carried out in 2017 and 2018 in four-year-old-terraced Lixisols and Acrisols of medium and high altitudes to determine effect of nitrogen and phosphorus fertilizer application rates on maize yields. A factorial arrangement of four levels of nitrogen (0, 60, 120 and 180 kg N ha-1) and phosphorus (0, 40, 80 and 120 kg P2O5 ha-1) in a randomized complete block design with 3 replications, was used. Results showed that combinations of 120 - 180 kg N ha-1 and 80 - 120 kg P2O5 ha-1 resulted in significantly (P less than 0.05) higher increases in plant height (45 – 60 % and 56 – 70 % over the control), stem collar diameter (63 – 74 % and 43 % over the control) and grain yields (3 times over the control; i.e. 6.40 – 6.46 t ha-1 and 6.02 - 6.12 t ha-1) in medium and high altitude sites. The optimum fertilizer rates are 176.6 kg N ha-1 and 96.2 kg P2O5 ha-1 in terraced Lixisols of medium altitude area. Land use needs to adjust fertilizer application to these optimum rates for enhanced maize yields in this area and other regions with similar agro-ecological characteristics. Further studies on integrated effects of N and P fertilizers are recommended.

Effects of ammonium lignosulphonate and diammonium phosphate on soil organic carbon, soil phosphorous fractions and phosphorous uptake by corn

1995 ◽  
Vol 75 (2) ◽  
pp. 233-238 ◽  
Author(s):  
J. W. Fyles ◽  
X. H. Xie ◽  
A. F. MacKenzie ◽  
I. P. O’Halloran ◽  
R. J. Xie
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Fertilizer Efficiency ◽  
P Fractions ◽  
Soil P ◽  
Soil P Fractions ◽  
Native Soil ◽  
Extractable P ◽  
P Fertilizer ◽  
Field Incubation

Low P fertilizer efficiency can be attributed to a reduction in solubility due to P reactions with soil components. Added organic material may reduce such reactions and improve P fertilizer efficiency. Lignosulphonate (LS), a by-product of the pulp and paper industry, could have beneficial effects on fertilizer P. Effects of ammonium lignosulphonate (ALS) and diammonium phosphate (DAP) on corn (Zea mays L.) P uptake, extractable P and P fractions were measured. Soil P fractions were determined using a field incubation technique to simulate banded P applications in two Humic Gleysols, a Ste. Rosalie clay soil and an Ormstown silty clay loam soil. Soil organic C increased with increasing ALS addition and decreased with DAP additions. ALS had little effect on native soil P fractions. When applied with DAP, increasing rates of ALS increased Mehlich-III extractable P, 0.5 M NaHCO3 and 0.1 M NaOH extractable inorganic P, reduced 1.0 M HCl extractable P and had no effect on organic P extractable in 0.5 NaHCO3 and 0.1 M NaOH. Applying ALS at rates up to 300 kg ha−1 with P at 60 kg P2O5 ha−1 may improve uptake by corn of fertilizer P, but using ALS alone does not improve native soil P availability. Key words: Lignosulphonate, phosphorous fractions, field incubation, organic carbon, Zea mays L.

Sign in / Sign up

Export Citation Format

Share Document