Sulfur speciation in a tropical soil amended with lime and phosphogypsum under long-term no-tillage system

It is known, for a long time, that crop yields are not uniform at the field. In some places, it is possible to distinguish sites with both low and high yields even within the same area. This work aimed to evaluate the spatial and temporal variability of some crop yields and to identify potential zones for site specific management in an area under no-tillage system for 23 years. Data were analyzed from a 3.42 ha long term experimental area at the Centro Experimental Central of the Instituto Agronômico, located in Campinas, Sao Paulo State, Brazil. The crop yield data evaluated included the following crops: soybean, maize, lablab and triticale, and all of them were cultivated since 1985 and sampled at a regular grid of 302 points. Data were normalized and analyzed using descriptive statistics and geostatistical tools in order to demonstrate and describe the structure of the spatial variability. All crop yields showed high variability. All of them also showed spatial dependence and were fitted to the spherical model, except for the yield of the maize in 1999 productivity which was fitted to the exponential model. The north part of the area presented repeated high values of productivity in some years. There was a positive cross correlation amongst the productivity values, especially for the maize crops.

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Sulfur speciation in a tropical soil under long-term no-till amended with lime and phosphogypsum

10.11606/d.11.2020.tde-04052020-123116 ◽

2020 ◽

Author(s):

Rodolfo Fagundes Costa

Keyword(s):

Tropical Soil ◽

No Till ◽

Sulfur Speciation

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Nitrification inhibition in tropical soil under no tillage system

Revista de Ciências Agrarias - Amazon Journal of Agricultural and Environmental Sciences ◽

10.4322/rca.2014.015 ◽

2014 ◽

Vol 57 (2) ◽

pp. 199-206

Author(s):

Edemar Moro ◽

Carlos Alexandre Costa Crusciol ◽

Adriano Stephan Nascente ◽

Heitor Cantarella

Keyword(s):

Tropical Soil ◽

Nitrification Inhibition ◽

No Tillage ◽

Tillage System

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Long-Term Effects of Three Tillage Systems on Peanut Grade, Yield, and Stem Rot Development1

Peanut Science ◽

10.3146/i0095-3679-25-2-1 ◽

1998 ◽

Vol 25 (2) ◽

pp. 59-62 ◽

Cited By ~ 22

Author(s):

W. J. Grichar

Keyword(s):

Sclerotium Rolfsii ◽

Field Studies ◽

Stem Rot ◽

Reduced Tillage ◽

No Tillage ◽

Long Term Effects ◽

Tillage Systems ◽

Tillage System ◽

Grade Yield

Abstract Field studies were conducted from 1987 to 1996 to evaluate the effects of long-term no-tillage, reduced-tillage, or full-tillage systems on peanut grade, yield, and stem rot (Sclerotium rolfsii) disease development. In 3 of 10 yr the full-tillage system outyielded the no-tillage system while the reduced tillage system resulted in yield increase over no-tillage systems in 2 yr. Reduced-tillage plots had a higher incidence of stem rot than full-or no-tillage in 4 of 10 yr. In 3 of 10 yr, peanut grade (% TSMK) was lower in no-tillage than full-tillage plots. The reduced tillage system has shown promise for use in Texas for peanut. However, no-tillage peanut systems have never produced yield and quality comparable to full-tillage systems.

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Amount of Rain Until Third Leaf Explain Differences in Irrigated Durum Wheat Yield Between a Conventional and No-Tillage System in a Long-Term Crop Rotation System in Mediterranean Environment

International Journal of Plant Production ◽

10.1007/s42106-019-00059-3 ◽

2019 ◽

Vol 13 (4) ◽

pp. 339-346

Author(s):

Paola Silva ◽

Marco Garrido ◽

Gastón Shertzer ◽

Edmundo Acevedo

Keyword(s):

Durum Wheat ◽

Crop Rotation ◽

Wheat Yield ◽

No Tillage ◽

Mediterranean Environment ◽

Rotation System ◽

Tillage System ◽

Crop Rotation System

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Accumulation of phosphorus fractions in typic Hapludalf soil after long-term application of pig slurry and deep pig litter in a no-tillage system

Nutrient Cycling in Agroecosystems ◽

10.1007/s10705-012-9511-3 ◽

2012 ◽

Vol 93 (2) ◽

pp. 215-225 ◽

Cited By ~ 42

Author(s):

Renato Guardini ◽

Jucinei José Comin ◽

Djalma Eugênio Schmitt ◽

Tales Tiecher ◽

Marcos Antônio Bender ◽

...

Keyword(s):

Phosphorus Fractions ◽

Pig Slurry ◽

No Tillage ◽

Tillage System

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PENGARUH SISTEM OLAH TANAH DAN PEMUPUKAN NITROGEN JANGKA PANJANG TERHADAP RESPIRASI TANAH DI LAHAN POLITEKNIK NEGERI LAMPUNG TAHUN TANAM KE-27

Jurnal Agrotek Tropika ◽

10.23960/jat.v8i2.3898 ◽

2020 ◽

Vol 8 (2) ◽

pp. 247

Author(s):

Erdiana Damayanti ◽

Muhajir Utomo ◽

Ainin Niswati ◽

Henrie Buchari

Keyword(s):

Soil Respiration ◽

Co2 Emissions ◽

Nitrogen Fertilizer ◽

Nitrogen Fertilization ◽

Conservation Tillage ◽

N Fertilization ◽

No Tillage ◽

Tillage Systems ◽

Tillage System

Unsustainable cultivation techniques can cause carbon loss on farm. The cultivation technique that is often used by farmers today is intensive tillage. Intensive tillage can increase CO2. Steps to reduce CO2 gas emissions, while increasing carbon stored in the soil by implementing agricultural cultivation with conservation tillage system (Olah Tanah Konservasi). The conservation tillage system is able to reduce global warming through absorption of C in the soil, and reduce CO2 emissions. In addition, fertilization can also affect CO2 emissions. CO2 emissions in the soil come from soil respiration. The purpose of this study was to determine the effect of long-term tillage systems on soil respiration, determine the effect of long-term N fertilization on soil respiration, and determine the effect of interactions between tillage systems and long-term N fertilization on soil respiration. The study was arranged in a randomized block design (RBD) consisting of two factors, namely the tillage system and nitrogen fertilization factors. The first factor is the treatment of tillage system (T) namely T0 = no tillage, and T1 = intensive tillage, while the second factor is without nitrogen fertilizer (N0) and high nitrogen fertilizer (N1). The data obtained will be tested for homogeneity by Bartlett Test and additives tested by Tukey Test. Furthermore, the data were analyzed by analysis of variance and continued with a BNJ test of 5% level. Observation of soil respiration was done 4 times, namely -1, 1, 2, 3 days after tillage. The results showed that soil respiration one day before to three days after the soil was treated in intensive tillage (OTI) was the same as the no tillage system (TOT), soil respiration -1 days after tillage to 3 days after tillage on nitrogen fertilization (100 N kg ha-1 ) given in the previous planting season the same as without fertilization (0 kg N ha-1), and there is no interaction between the tillage system and nitrogen fertilization on soil respiration.

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