The relative roles of N fixation, fertilizer, crop residues and soil in supplying N in multiple cropping systems in a humid, tropical upland cropping system

Sisworo, W.H.; Mitrosuhardjo, M.M.; Rasjid, Havid; Myers, R. J. K.

doi:10.1007/bf02444106

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…Soybean plays a relevant role in crop rotations 44 and is a major source of oil and protein worldwide. Improving BNF can be achieved by breeding and selection targeting the plant, the N-fixing bacteria, and better matching plant and bacteria 45 – 47 .…”

Section: Discussionmentioning

confidence: 99%

Interplay between nitrogen fertilizer and biological nitrogen fixation in soybean: implications on seed yield and biomass allocation

Tamagno

Sadras

Haegele³

et al. 2018

Sci Rep

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Legumes rely on soil mineral nitrogen (N) and biological N fixation (BNF). The interplay between these two sources is biologically interesting and agronomically relevant as the crop can accommodate the cost of BNF by five non-mutually exclusive mechanisms, whereby BNF: reduces shoot growth and seed yield, or maintains shoot growth and seed yield by enhanced photosynthesis, or reduced root:shoot ratio, or maintains shoot growth but reduces seed yield by reducing the fraction of shoot biomass allocated to seed (harvest index), or reducing concentration of oil and protein in seed. We explore the impact of N application on the seasonal dynamics of BNF, and its consequences for seed yield with emphasis on growth and shoot allocation mechanisms. Trials were established in 23 locations across the US Midwest under four N conditions. Fertilizer reduced the peak of BNF up to 16% in applications at the full flowering stage. Seed yield declined 13 kg ha−1 per % increase in RAUR6. Harvest index accounted for the decline in seed yield with increasing BNF. This indicates the cost of BNF was met by a relative change in dry matter allocation against the energetically rich seed, and in favor of energetically cheaper vegetative tissue.

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Section: Discussionmentioning

confidence: 99%

Interplay between nitrogen fertilizer and biological nitrogen fixation in soybean: implications on seed yield and biomass allocation

Tamagno

Sadras

Haegele³

et al. 2018

Sci Rep

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“…For every ton of shoot dry matter produced, legumes fix on average 30 to 40 kg of freely available atmospheric nitrogen (Peoples et al, 2009). This can contribute to soil fertility especially when crop residues are incorporated in the soil (Giller, 2001;Sanginga, 2003;Sisworo et al, 1990). In southern Africa, legumes enhance the following cereal yields by an average of 42 percent due to the rotational benefits (Franke et al, 2018).…”

Section: Crop Diversification With Legumes and Sweet Potatomentioning

confidence: 99%

“…Legumes such as soybean (Glycine max (L.) Merr.) can contribute to improved soil fertility through biological nitrogen fixation when crop residues are incorporated into the soil (Sanginga, 2003;Sisworo et al, 1990;Peoples et al, 2009;Giller, 2001). Incorporation of legumes into maize-based systems can help reduce biotic stresses in cereals such as Asiatic witch weed (Striga asiatica (L.) Kuntze) (Kabambe et al, 2008), improve household nutrition by adding essential amino acids to diets (Bezner Kerr et al, 2007) and provide additional cash income if markets are available (Giller et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Participatory approaches to diversification and intensification of crop production on smallholder farms in Malawi

Vugt¹

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“…Common bean Brazil (Duque et al, 1995) 18-71 3-32 16-71 Cowpea Indonesia (Sisworo et al, 1990) 25-69 9-51 12-33 Table 2. Increase in rice grain yield and estimated amounts of fixed N2 by different N2 fixing systems (Choudhury et al, 2004).…”

Section: Groundnutmentioning

confidence: 99%

Microbial intervention in agriculture: An overview

Sengupta¹,

Gunri²

2015

Afr. J. Microbiol. Res.

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With increase in population, rapid urbanization and industrialization, land area under agricultural production is decreasing day by day. In order to feed the huge population, more production is required from lesser area, which triggers continuous applications of higher doses of inorganic fertilizers in an injudicious manner posing serious harm on soil health, further rendering large fraction of land unfit for cultivation every year due to nutrient imbalance. Combustion of fossil fuels during production of inorganics, leaching, loss of excess inorganic nitrate and phosphorus from cropped lands, excessive uplifting of ground water for irrigation purpose also lead to degradation of the quality of environment and natural resources through global warming, eutrophication, heavy metal contamination in ground water, etc. Under such circumstances, some improvised technologies are to be adopted to enhance productivity in a sustainable manner. A great deal of effort focusing on the soil biological system and the agro-ecosystem as a whole is needed to enable better understanding of the complex processes and interactions governing the stability of agricultural lands. The technological advances made in recent times in exploring biodiversity have revealed that microbial diversity has immense potential that can be explored through careful selection of microbes and their successful utilization in solving major agricultural and environmental issues.

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The relative roles of N fixation, fertilizer, crop residues and soil in supplying N in multiple cropping systems in a humid, tropical upland cropping system

Cited by 7 publications

References 7 publications

Interplay between nitrogen fertilizer and biological nitrogen fixation in soybean: implications on seed yield and biomass allocation

Interplay between nitrogen fertilizer and biological nitrogen fixation in soybean: implications on seed yield and biomass allocation

Participatory approaches to diversification and intensification of crop production on smallholder farms in Malawi

Microbial intervention in agriculture: An overview

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