Nutrientes do solo influenciados por diferentes manejos da palha após a colheita do arroz irrigado

Massoni, Paulo Fabrício Sachet; Marchesan, Enio; Grohs, Mara; Silva, Leandro Souza da; Roso, Rodrigo

doi:10.1590/s1806-66902013000200001

Cited by 4 publications

(5 citation statements)

References 10 publications

(6 reference statements)

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“…In addition, the amount of mineral N was higher for treatments with straw applied in off-season flooded rice, if compared to soil without straw (Linquist et al 2006). Massoni et al (2013) observed a rise in mineral N at the beginning of the off-season, but the amount of N at the end of 164 days was the same as at the beginning. The increased amount of surface-applied straw did not affect the rice shoot dry mass (Figure 2a).…”

Section: Cause Of Variationmentioning

confidence: 80%

Performance of flood-irrigated rice as affected by residual rice straw1

Beutler

Ferreira

Zambeli

et al. 2017

Pesqui. Agropecu. Trop.

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Rice is an economically important and widely consumed cereal that achieves high yields under flood-irrigated cultivation. However, the amount of residual straw from the previous year may influence its growth and yield. This study evaluated the performance of flood-irrigated rice as affected by residual rice straw, in a greenhouse. A completely randomized design, in a 5 x 4 x 2 factorial scheme, with four replications, was used. Treatments were obtained from a combination of five rice straw amounts (0 t ha-1, 5 t ha-1, 10 t ha-1, 20 t ha-1 and 40 t ha-1), four application times (3, 2, 1 and 0 months before sowing) and two straw application methods (on the surface and incorporated into the soil). The number of panicles and shoot dry mass do not increase when residual straw remains on the soil surface. When the straw is incorporated into the soil on the sowing day, the number of panicles and the shoot dry mass increased by 20 % and 14 %, respectively, if compared to when it was added three months before. The addition of residual rice straw on the surface or incorporated into the soil resulted in a higher yield for flood-irrigated rice grains, when compared to the absence of straw. At 40 t ha-1 of residual rice straw, added at three months before sowing, there was a higher mass yield of rice grains, if compared to the lower amounts of straw.

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Section: Cause Of Variationmentioning

confidence: 80%

Performance of flood-irrigated rice as affected by residual rice straw1

Beutler

Ferreira

Zambeli

et al. 2017

Pesqui. Agropecu. Trop.

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“…2b). Massoni et al (2013 b), evaluating nutrient cycling as a function of rice postharvest, observed that the K release process from plant tissues was extremely fast with 90% of K contained in the residues released by 41 days after harvest. Therefore, it was possible to observe a reduction in the content of this salt.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the sample collection period was less than 12 days after the knife-roller pass, a period which was not enough to release nitrogen from the plant residues. The anaerobic environment restricts the microbial population to a few species, which reduces decomposition and nitrogen release (Massoni et al 2013 b).…”

Section: Resultsmentioning

confidence: 99%

Greenhouse gas emission, water quality and straw decomposition as a function of rice postharvest field management

et al. 2020

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The objective of this paper was to evaluate the quality of water drained after the use of the knife-roller (an implement used to incorporate rice residues after harvest), the partial global warming potential (pGWP) and straw decomposition as a result of postharvest field management of irrigated rice. The experiments were conducted during the 2018 and 2019 offseason and the treatments consisted of several water drainage periods (0, 3, 6, 9 and 12 days) after a field pass with a knife-roller. In addition, a nonflooded harvest treatment without straw management was included. Analysis of drainage water three days after a pass with the kniferoller showed a reduction in total soluble solids by 94% compared to zero days. Nitrogen and soluble phosphorus were not influenced by the treatments. However, potassium levels increased as the drainage period increased, which is related to the period between harvest and drainage. As the electrical conductivity is influenced by the concentration of ions, it showed the same response curve as the potassium levels and, for pH, there were small oscillations influenced by the temperature. The total CH 4 emission and the pGWP were higher when the water depth remained for a longer period. However, the N 2 O emissions were higher in the absence of soil submersion. Water should be drained three days after a pass with the knife-roller in order to reduce potassium loss and suspended solids as well as pGWP. The use of the knife-roller accelerated the process of straw decomposition in relation to the unmanaged straw treatment.

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“…Tanaka et al (2012), Suriyagoda et al (2014), andLi et al (2014) reported increase in N, P, and K contents in soil due to recycling through stubble. On the other hand, Massoni et al (2013) found that, regardless of the postharvest management used for irrigated rice straw, there was no increase in the contents of mineral N and available P and K at the end of the off-season. In relation to soil physical properties, Gangwar et al (2006) found that rice straw incorporation decreased soil bulk density and increased water infiltration rate, and Ou et al (2016) reported increase in the proportion of macroaggregates and aggregates associated with soil organic carbon.…”

Section: Introductionmentioning

confidence: 88%

Management of rice straw in rice-soybean succession in tropical lowland

et al. 2022

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This study aimed to analyze rice straw alternative managements to maximize the rice-soybean succession yield and to quantify their impacts on soil properties. The experiment was set up in a completely randomized design with six replicates. Nine rice straw managements were evaluated: straw burning (M1), straw harvesting (M2), straw incorporation with disc harrow and two passes (M3) or three passes (M4) of leveling disc harrow, straw incorporation with kniferoller and soybean no-tillage (M5), straw incorporation with knife-roller and two passes (M6) or three passes (M7) of leveling disc harrow, straw incorporation with two passes of knife-roller and two passes (M8) or three passes (M9) of leveling disc harrow. Straw incorporation by knife-roller provided the lowest soil organic matter (SOM) contents due to slow mineralization of fresh straw incorporated shallow into the soil, although SOM increased in the surface layer related to the initial content. Rice-soybean succession yield was more affected by the physical than by the soil chemical properties. The straw incorporation with one pass of knife-roller and two passes of leveling disc harrow (M6) can replace the straw burning, without affecting the rice-soybean succession yield and soil physical quality, with a reduction in machinery operations, allowing early soil tillage.

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Nutrientes do solo influenciados por diferentes manejos da palha após a colheita do arroz irrigado

Cited by 4 publications

References 10 publications

Performance of flood-irrigated rice as affected by residual rice straw1

Performance of flood-irrigated rice as affected by residual rice straw1

Greenhouse gas emission, water quality and straw decomposition as a function of rice postharvest field management

Management of rice straw in rice-soybean succession in tropical lowland

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